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his Minas Gerais accent was ridiculed when he applied for a job at Rádio Tupi
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This Haiku sign was installed Sunday at the top of Maliko Gulch heading east
A new Haiku gateway welcome and aloha sign was installed on Sunday morning along Hana Highway
Haiku resident and former Haiku Community Association President Gregg Blue offered private funding and the design
In coordination with the state Department of Transportation
HCA Treasurer Tim Wolfe and contractor Duarte Lima of Acacia Construction installed the double-sided sign at the top of Maliko Gulch heading east
The Haiku gateway sign is a way to welcome visitors and residents into the community and to share aloha as they leave
A grant information session for Maui County’s recycling grants program will be at 2 p.m
In light of increased property values driving up tax payments
the Maui County Council’s budget committee has ..
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American anthropologist has contributed to primate conservation in the Atlantic Forest and trained almost 80 Brazilian researchers
visited the forests of Caratinga in the Brazilian state of Minas Gerais for the first time
She was immediately captivated by the northern muriquis (Brachyteles hypoxanthus)
Muriqui males are the same size as the females and they are a peaceful species
in direct contrast with the displays of dominance she had witnessed years earlier among baboons in Africa
Strier has divided her time between her work as a professor at the University of Wisconsin–Madison in the US and her field research in Brazil
Perhaps because of the warm welcome she received from the primates in Brazil (humans included) or the tropical climate of the Atlantic Forest compared to the harsh winters of the northern USA
she says she feels more alive when she is in Minas Gerais
Caratinga locals have promised to throw her a party next year to celebrate her 40th year studying the endangered apes
about which little was known when she first arrived
The population has undergone a remarkable recovery
although their numbers are still below the level needed to ensure the continuity of the species
She was president of the International Primatological Society until the turn of the year
and she returned to Brazil in February to help formulate a recovery plan for the muriquis in São Francisco Xavier
a village in the municipality of São José dos Campos
She also visited the Ibitipoca Commune in Lima Duarte
to see the muriquis there for the first time in more than six months
She spoke to Pesquisa FAPESP via video call from her accommodation in Vila do Mogol
where she teaches and lives with her biochemist husband and their cat
Tell us about the meeting in São Francisco Xavier in early February
São José dos Campos city hall got in touch with me because they had information about muriquis in the surrounding forests
They had read my book Faces in the Forest and wanted my opinion
it’s the biologists who start field research projects
but in this case it was the local community that called on us to develop a primate conservation plan
I came to continue my long-term research and help my colleague Fabiano de Melo
and to continue discussing this project in São Francisco Xavier
Now in February we’re getting started again
with everyone wearing masks and keeping 2 meters apart
The first thing to do will be to better understand primate populations in the region—their size
and connections between them—as the basis for a conservation plan
The work here is an independent supplement to my long-term research
It’s one of the longest primate studies in the Americas
which has allowed me to train nearly 80 Brazilian scientists
a rural entrepreneur called Renato Machado from here in Ibitipoca contacted me and my colleagues Fabiano
who is the director of INMA [the National Institute of the Atlantic Forest]
and Leandro Jerusalinsky from the CPB [the National Center for Brazilian Primate Research and Conservation]
There was a small population here—just four males—and later there were only two
meaning they needed a lot of help to recover
I had already observed in Caratinga that it is the females that leave the group and the males that stay
only males remain and no more offspring are born
which is called Muriqui House and is managed by Fabiano and Fernanda Tabacow
we looked for females from other isolated populations—almost all of them had at least one trying to leave—and brought them to live and reproduce with the males of the group
The plan is to create two groups to facilitate genetic exchanges between the females
Another parallel project is working to restore the forests where the muriquis live
What was primate research like in the 1980s when you first started studying muriquis
for many biologists who go into anthropology
primates are good models for understanding human social behavior and evolution; since we are primates
I was looking for an animal model to study how ecological variables
could influence social behavior and group hierarchies
most of the studied primates were from Africa and Asia
Howler monkeys were the only ones from the Americas studied in the field in any depth
was narrating a film about muriquis made by Russell Mittermeier [American primatologist] for the WWF [World Wildlife Fund] and asked if I wanted to see the film before it was distributed
I discovered that almost nothing was known about the behavior of the species
I needed to find out what they eat and the seasonality of their diet
and test theories developed for other primates
I went to Caratinga with Mittermeier and he introduced me to the muriquis
What was your first encounter with them like
First I smelled them—a nice cinnamon smell because they’re vegetarians
I was really curious to see how they behaved
and from the very beginning it was very clear in my mind that everything I learned could be applied to their conservation
I only stayed in Caratinga for a short time that year
but later I came back to spend 14 months collecting data for my PhD research
you had to go into town and wait in line to use the only phone in the area
The muriquis were different—they weren’t typical primates
In 1994 I published a paper called “Myth of the Typical Primate,” which offered a new perspective on primates in general
there is no size difference between the sexes
Males can’t threaten females because they aren’t bigger than them
An animal’s diet is calculated based on the proportion of each food type it eats
So if the largest proportion of their diet was leaves
I realized that leaves were important to their diet
because their entire behavior was focused on what they preferred to eat: fruits and flowers
This changed our interpretation of how diet should be used to interpret behavior
Did anything else differ to theoretical predictions
When I was 19 and doing my undergraduate degree
I spent six months in Africa participating in a study on baboons
I had an idea of what a typical primate should be like
Male baboons are twice the size of females
It is the males that migrate between groups looking for a mate to reproduce with
are monomorphic—there is no size difference between the sexes
Males cannot threaten females because they aren’t bigger
aggression between group members is very low compared to other primates
Their sexual behavior is very open: males and females mate in front of each other
or one female mates with several males in a row
she leaves—the males don’t chase after her
it’s the male leader who decides who to mate with and when
Do you know why they are so different to other primates
We have collected their feces and extracted estrogen
and other hormones to understand their reproductive biology
We determined that females have 21-day cycles and gestation lasts 7.2 months
We have also seen that females leave their birth group at the beginning of puberty
and take some time to integrate into other groups
We’ve done paternity analyses using feces and monitored changes in the population and its demography
What changes occurred in the population you followed
there were two groups of about 50 individuals
but after about 20 years we decided to study the entire population
the population grew from 50 individuals to 356
One of the changes we observed is that the animals always stick together when the group is small
but they spread out more when the size of the group increases and competition for food grows
because they can’t all fit in the same trees
As the population grew and the available forest diminished
This behavior spread within a group and between different groups—it was probably an adaptive response to the limited space
Personal archiveStrier has been watching muriquis from the trails of the Caratinga reserve for 40 yearsPersonal archive
But the years 2014 and 2015 were very dry in Brazil
There was almost an electricity crisis because the dams ran out of water
but a wave of yellow fever killed more than 30 individuals—10% of the population—in six months
The muriquis experienced mortality like never before
the population has continued to dwindle in the last five years
which is still five times what it was when I started
The population growth was a direct result of favorable demographic conditions: births every three years
the owner of the farm where the Caratinga reserve is located
banned hunting and helped preserve the forest
The forest was protected and the population was able to grow
his family created an RPPN [Private Natural Heritage Reserve] named in his honor
you published an article about the muriquis’ limit of resilience
We still don’t know what this species’ limits of resilience are
What the muriquis are demonstrating is that given a chance
they are capable of adjusting their behavior and adapting to challenging conditions
we have to pay attention to these changes and gather more information
I am monitoring how the muriquis in Caratinga adapt over time
Do you have a personal relationship with the muriquis
The muriquis from Caratinga are like people I know
although less so nowadays because the last individual of the original group died a few years ago; they can live for over 40 years
The animals were my companions for many years and I have no doubt that they recognized me
Many other researchers have visited over the last few decades
but when I go into the forest with a visitor
they try to hug me and threaten the other person
What was it like when you first went to the interior of Minas Gerais to begin your research
Later I returned with funding and a research visa during my PhD
Brazil has a system that requires foreign researchers to have a counterpart—a local collaborator
a professor from UFMG [Federal University of Minas Gerais]
He welcomed me into his laboratory and made it easy for me to get to know people in the area
the first director of the Primatology Center in Rio de Janeiro
He and others who pioneered the conservation of the Atlantic Forest made me feel so welcome and helped me a lot
I met Sergio Lucena at the research base in Caratinga
I was studying the muriquis for my PhD and he was doing a master’s on howler monkeys
but he later moved to the US and worked at Conservation International
He’s now at the GEF [Global Environment Facility]
we included Fabiano de Melo as a second collaborator to help with the workload
Carla de Borba Possamai and Fernanda Tabacow
who started as fellows on the project in 2001 and 2005
This system gave me the opportunity to collaborate with primatology and environmental conservation experts in Brazil and I felt part of a larger group from the very beginning
It was a long-term project—I secured the funding
but I couldn’t have done anything without my Brazilian colleagues
A long-term study lets you see which behaviors are more rigid and which are more flexible
23-year-old woman who came from another country to live alone in the forest for 14 months
Many residents came to the research base just to see me; one woman wanted to touch my hair
even though there’s nothing special about it
Feliciano came by every day to check on me
We want to get local people and schools from the regions where we work more involved
to maintain communication networks between children and get people interested in preserving and monitoring the areas where primates live
We recently carried out a citizen science project with Marcello Nery
president of MIB [Muriqui Biodiversity Institute
a nongovernmental organization based in Caratinga]
to learn more about primates in the reserve
We made a calendar with photos of the four monkey species that live in the region and asked residents to write down if they saw or heard any of them
We then discovered that we didn’t even need to make monthly visits to collect the data
because people could tell us what they saw via WhatsApp
Does the unified theory of behavioral ecology mean we can study insects and primates in the same way
you can’t study different animals in the same way
A good study needs to use a methodology designed for the specific species
The principles have a certain continuity because they come from kin selection
At least among social species such as primates and ants
there is much greater variation in behavior than expected
But it is not possible to compare concepts of individuality between primates
or other species that do not live as long as primates
but primates have more opportunities to learn and respond to novelty
related to their lifelong histories and cognitive abilities
that make them as interesting as other long-living animals
This is one of the major contributions of our research on the behavior of muriquis
we are able to see which behavioral aspects are more rigid and which are more flexible
This helps a lot when planning population management
Along with the greater understanding of behavioral flexibility that we have gained over the years has come the recognition that in most cases
we are studying animals that are not in their original environments—their habitats have been altered
When I told my colleagues in the US that I was going to study muriquis in Caratinga
You’re going to study animals somewhere that has been very disturbed
to the point that it’s now just a fragment
How are you going to understand their evolutionary behavior?” The northern muriquis came from the old Atlantic Forest in the south of Bahia
which is now highly fragmented and deforested
This means they now live closer to farms and cities
as do the southern muriquis [Brachyteles arachnoides]
and are thus at greater risk of being killed by humans
But this problem is faced by primates all over the world
We have to be careful with our observations because we don’t know exactly what the original conditions were like
admitting that we don’t know what to expect
Now—and this is since quite recently—we can say with certainty that the northern muriqui and the southern muriqui are different species
Genetic analyses show differences between the two species
and they may have emerged some 2 million years apart
It’s similar to the genetic difference between the chimpanzee and the bonobo in Africa
Personal archiveWith Feliciano Abdala in Caratinga
Do you have students permanently studying muriquis
I have received funding from the National Science Foundation
the University of Wisconsin–Madison itself
the CNPq [Brazilian National Council for Scientific and Technological Development] and CAPES [Brazilian Federal Agency for Support and Evaluation of Graduate Education] not only to bring over students from the US
but also to train and qualify Brazilian students
based on the fact that the muriquis represent a part of Brazil’s heritage
Many biologists here wanted to study them but weren’t able to do so due to a lack of funding or training
Every year two to four students join my study to collect data for their master’s degrees and later carry out their own scientific research to support conservation
Contributing in this way gives me immense satisfaction
The muriquis have helped train and educate the next generation of scientists
Those who started with me on fellowships are now doing their own studies in other places
such as the Caparaó National Park [on the border between the states of Espírito Santo and Minas Gerais]
Did your work at the International Primatology Society contribute to your research in Brazil
My term was supposed to end in August 2020
our conference [at which the president of the society is changed] was postponed
I presided over the International Primatology Society for longer than any previous president: five-and-a-half years
was president of SLAPRIM (the Latin American Society of Primatology)
We worked closely and had a good relationship because we’ve known each other for a long time
Brazilian primatologists therefore naturally had a lot of opportunities at the international society
because they felt comfortable getting in touch with me
one of the society’s vice presidents and its general secretary are Brazilian
I was able to help by giving a bigger platform to people who were already very active in the field
giving them recognition and promoting their work
I have no doubt that one of them will be president in the next few years
Brazilians are renowned in international primatology
In 2020 you received an important award in Atlantic Forest conservation: the Muriqui Prize
so I can’t say I should have won it sooner
It made me feel like my Brazilian colleagues are still taking care of me
which is a result of the long-term partnerships I have forged with my Brazilian colleagues
Have you ever felt like going back to Africa
where you had your first primatology experience
The only time I went back to Africa was a trip to Kenya a few years ago to speak at a conference
I told the audience I had been there as a student when I was 19 and never thought I would return
as president of the International Primatology Society
I applied for funding to study primates in Asia
and I was offered a 14-month scholarship with free language lessons included
but I chose to return to Brazil and continue studying muriquis instead
I was “married” to the muriquis and never thought about leaving
but there I teach and have day-to-day responsibilities at the university
Maybe part of the reason I feel more alive here is because right now it’s summer here
while it’s zero degrees in my home city
© Revista Pesquisa FAPESP - All rights reserved
Metrics details
Chromobacterium violaceum is a free-living bacillus with several genes that enables it survival under different harsh environments such as oxidative and temperature stresses
Here we performed a label-free quantitative proteomic study to unravel the molecular mechanisms that enable C
total proteins extracted from control and C
violaceum cultures exposed during two hours with 8 mM hydrogen peroxide were analyzed using GeLC-MS proteomics
Analysis revealed that under the stress condition
the bacterium expressed proteins that protected it from the damage caused by reactive oxygen condition and decreasing the abundance of proteins responsible for bacterial growth and catabolism
GeLC-MS proteomics analysis provided an overview of the metabolic pathways involved in the response of C
violaceum to oxidative stress ultimately aggregating knowledge of the response of this organism to environmental stress
This study identified approximately 1500 proteins
generating the largest proteomic coverage of C
We also detected proteins with unknown function that we hypothesize to be part of new mechanisms related to oxidative stress defense
we identified the mechanism of clustered regularly interspaced short palindromic repeats (CRISPR)
which has not yet been reported for this organism
previous proteomic profilings disclosed at most
violaceum in response to an environmental stress
These investigations detected changes in the expression pattern of several genes such as sigma factors and MerR family which are involved in general stress response
They also found that exposure to hydrogen peroxide induces the gene expression and mechanisms associated with oxidative stress
thioredoxin reductase and peroxidase as well as mechanisms of iron and manganese homeostasis and SOS response
The present study investigates changes in the proteome profile under oxidative stress induced by a high dose of hydrogen peroxide; we believe these changes reflect the mechanisms used by this bacterium to cope with the oxidative stress
our results provided experimental evidence on hypothetical proteins and thus shortlisting the approximately 40% of the ORFs annotated as hypothetical proteins
we used an LTQ-Orbitrap Velos to obtain a substantial comprehensive proteomic profile of an organism that is protecting itself against ROS
Given the nature of the experiment at hand
these proteins are highly likely to be related to oxidative stress defense
violaceum starts to recover from the oxidative stress exposure
Each point of the curve represents the mean from three biological replicates
***p < 0.001 (T-test for comparisons between negative control on its respective time)
Each column represents the mean value ± SD of 3 separate experiments
(column 1: control group; column 2: bacteria cultured with 8 mM of H2O2)
(A) Exclusively identified proteins from oxidative stress condition
(B) Proteins identified exclusively in control condition
35 ORFs remained as proteins with unknown function: 19 for oxidative stress and 16 under control conditions
This shows that new mechanisms related to resistance and/or detoxification processes may be present in C
Genome analysis indicates that some of these ORFs (CV_4246
CV_0053 and CV_3599) display operon organization
the elevated baseline production of catalase in this bacterium may provide greater resistance to hydrogen peroxide and activation becomes insignificant under stress
These proteins may play a role in the protection and refolding of proteins oxidized by hydrogen peroxide
Activation of the expression of these genes under such stress restores the phenotype to the organism
conferring a characteristic that allows it to migrate in the environment in adverse conditions
The above studies indicate that the action of this operon favors adherence to the host
greater expression under oxidative stress indicates that
these proteins may also play a role in stress response
The presence of these proteins indicates the need for greater energy demand to resist damage caused by oxidative stress
oxidative stress likely models ribosomal structure
not only through interaction with other proteins
but also by expressing genes that improve the efficiency of translation under oxidative stress
The schematic depicts the CRISPR/CAS locus of C
Two CRISPR loci flank the six Cas genes (blue bars)
The enlarged diagram shows the clamp formed in repetitive regions containing 28 nucleotides (brown bars) separated by a spacer sequence (green lozenge)
Increased expression of five dehydrogenases shows that C
violaceum requires an increased energy demand in the intracellular environment to combat stress caused by hydrogen peroxide
The detected dehydrogenases produce intermediate in the glycolytic pathway and the citric acid cycle and also produces NADH+ that will feed the oxidative phosphorylation increasing the production of ATP
the most representative proteome of this bacterium
comprising a coverage of more than 30% of predicted ORFs
This proteome representation contributes to a better understanding of general environmental stress acclimation and may be used in further proteome studies for comparison purpose
of many hypothetical ORFs that may have their role investigated in further analysis
The bacterial strain used in this study was Chromobacterium violaceum ATCC 12472
It was inoculated into Petri dishes with LB (Lysogeny-Broth) agar and incubated at 28 °C for 24 h
Individual colonies were aerobically pre-inoculated into 50 mL Falcon tubes containing 5 mL aliquots of liquid LB and submitted to agitation at 200 rpm and 28 °C for 16 hours
Pre-inoculated samples were transferred to 250 mL Erlenmeyer flasks in a fresh medium at a ratio of 10:1 (final volume of 50 mL culture)
Bacteria were cultivated under the same conditions until reaching the exponential growth phase in an optical density (OD) at 600 nm of 0.4 – 0.5
Control samples remained under growth conditions and for treatment these were added to the 8 mM H2O2 cultures
Bacteria were cultivated and treated in three independent experiments
In order to determine the effect of hydrogen peroxide on the growth rate of C
bacteria were cultivated in liquid LB with or without 8 mM of hydrogen peroxide
Growth was monitored by measuring the OD600 of cultures at 15
Growth curve by CFU (colony-forming unity) count was performed
Treatment and growth conditions were as described above
with plating dilutions varying from 10−5 to 10−7
100 μL of each sample was plated and the bacteria grew for 24 h prior colony counting using Scan 1200 from Intersicence
data was normalized to number of colonies in 10−6 dilution
Three biological replicates and two technical replicates were used
Catalase activity levels were determined with commercial Catalase Assay Kits (Catalogue no
USA) according to the manufacturer’s instructions
This assay is based on the reaction of catalase with methanol in the presence of hydrogen peroxide
The formaldehyde produced is measured upon its reaction with Purpald chromogen which specifically forms a bicyclic compound that changes to colorless to purple color upon oxidation
Catalase activity was measured using total proteins extract as described above and was calculated in nmol.min/μg of protein
the concentration of total protein extract was used
The experiment was performed in three biological replicates
A total of 20 μg of protein was submitted to SDS-PAGE 12% in a Mini-Protean electrophoresis module (Bio-Rad)
Precision Plus Proteins WesternC Standard (Bio-Rad) was used as marker
The gel was further stained with Coomassie Colloidal G-250 (Sigma-Aldrich)
the gel was washed 3 × 30 minutes with 100 μL of 50% acetonitrile (ACN) solution and 10 mM of NH4HCO3
pH 8.0 and then dehydrated with 100 μL of ACN for 10 min
Disulfide bridges were reduced using 100 μL of 10 mM dithiothreitol (DTT) in 100 mM NH4HCO3 for 30 min at room temperature followed by dehydration for 10 min with 100 μL of 100% acetonitrile and alkylation with 50 μL of idoacetamide (IAM) 55 mM/10 mM NH4HCO3 for 30 min in the dark
The gel was dehydrated under the same conditions and dried with Concentrator Plus (Eppendorf)
15 μL of 13 ng μL−1 trypsin solution (Trypsin Promega Sequencing Grade Modified) in 10% NH4HCO3 100 mM and 10% acetonitrile was added to the dried gels in an ice bath for 30 minutes and then incubated at 37 °C for 16 hours
Tryptic peptides were extracted from the gel by adding 30 μL of extraction solution (95% ACN and 5% formic acid at 0.1%) and placed in a shaker under low agitation for 15 minutes at room temperature
the entire solution was removed and transferred to new tubes and dried with Concentrator Plus (Eppendorf)
Prior to being placed in the mass spectrometer
the samples were reconstituted in 10 μL of 0.1% formic acid and sonicated for 10 min
We used a reversed phase EASY-nano LC system (Proxeon
Denmark) coupled to an LTQ-Orbitrap Velos mass spectrometer (Thermo Fisher Scientific
Each hydrolysate was loaded in two replicates (technical replicates) into an 18 cm fused-silica emitter
packed in-house with ReproSil-Pur C18-AQ reversed phase 3 μm resin (Dr
Peptides were eluted using a gradient from 100% phase A (5% acetonitrile +0.1% formic acid) to 50% phase B (80% acetonitrile +0.1% formic acid) in 70 minutes; 50% to 60% phase B in 20 minutes; 60% phase B to 100% in 15 minutes and 100% phase B in a further 15 minutes at a flow rate of 200 nL/min
Ion mass spectra were obtained in positive mode by automated MS scanning and tandem MS/MS
Each MS scan collected in the Orbitrap at m/z 300–2000 and resolution of 60,000
was followed by MS/MS of the ten most intense ions in the LTQ
Fragmentation in the LTQ was performed by collision-induced dissociation (CID) with a dynamic exclusion of 60 seconds and normalized collision energy of 35
TFold uses a variable fold-change cutoff that takes into account a theoretical FDR estimator that maximizes the number of identifications
Only proteins present in at least two biological replicates were considered for this analysis
violaceum were previously inoculated and the treatment in the presence and absence of 8 mM H2O2 was made during two hours as mentioned above
total RNA was extracted using RNAspin Mini Isolation Kit
according to manufacture’s instructions (GE
The synthesis of cDNA was further made using the up-mentioned RNA
High capacity cDNA reverse transcriptase kit was used according to manufacturer’s instructions (Applied Biosystems
Statistical analysis was performed according to the t-test
Results were considered significant for p < 0.05
GeLC-MS-based proteomics of Chromobacterium violaceum: comparison of proteome changes elicited by hydrogen peroxide
Chromobacterium violaceum: a review of pharmacological and industiral perspectives
Cyanide Formation By Chromobacterium Violaceum
Metal solubilization from metal-containing solid materials by cyanogenic Chromobacterium violaceum
Chitinolytic Activity in Chromobacterium violaceum: Substrate Analysis and Regulation by Quorum Sensing
Isolation and identification of poly (3-hydroxyvalerate)-degrading strains of Pseudomonas lemoignei
Identification of Chromobacterium violaceum genes with potential biotechnological application in environmental detoxification
Cellulose Biosynthesis by the Beta-Proteobacterium
Chromobacterium violaceum and its important metabolites–review
The Complete Genome Sequence of Chromobacterium violaceum Reveals Remarkable and Exploitable Bacterial Adaptability
Tolerance to stress and environmental adaptability of Chromobacterium violaceum
Proteomics Analysis of the Effects of Cyanate on Chromobacterium violaceum Metabolism
Proteomic Response to Arsenic Stress in Chromobacterium violaceum
Electrophoresis and spectrometric analyses of adaptation-related proteins in thermally stressed Chromobacterium violaceum
The influence of iron on the proteomic profile of Chromobacterium violaceum
Management of oxidative stress in Bacillus
Iron homeostasis and management of oxidative stress response in bacteria
Peroxide stress elicits adaptive changes in bacterial metal ion homeostasis
Adaptive response to oxidative stress: Bacteria
Primary and secondary oxidative stress in Bacillus
Proteomics of the oxidative stress response induced by hydrogen peroxide and paraquat reveals a novel AhpC-like protein in Pseudomonas aeruginosa
Mass spectrometry-based quantitative proteomic analysis of Salmonella enterica serovar Enteritidis protein expression upon exposure to hydrogen peroxide
Transcriptional analysis of Mycobacterium fortuitum cultures upon hydrogen peroxide treatment using the novel standard rrnA-P1
Comparative global transcription analysis of sodium hypochlorite
peracetic acid and hydrogen peroxide on Pseudomonas aeruginosa
The transcriptome response of Neisseria gonorrhoeae to hydrogen peroxide reveals genes with previously uncharacterized roles in oxidative damage protection
Transcriptome analysis of the response of Pseudomonas aeruginosa to hydrogen peroxide
Transcriptome and proteome analysis of Bacillus subtilis gene expression in response to superoxide and peroxide stress
Hydrogen peroxide-induced oxidative stress responses in Desulfovibrio vulgaris Hildenborough
Burkholderia pseudomallei Rpos regulates OxyR and the katG-dpsA operon under conditions of oxidative stress
Analyzing marginal cases in differential shotgun proteomics
Defining the transcriptome and proteome in three functionally different human cell lines
Global quantification of mammalian gene expression control
A soluble 3D LC/MS/MS proteome of the filamentous cyanobacterium Nostoc punctiforme
Systematic and integrative analysis of large gene lists using DAVID bioinformatics resources
Two-dimensional proteome reference map of Rhizobium tropici PRF 81 reveals several symbiotic determinants and strong resemblance with agrobacteria
Proteomic analysis reveals a virtually complete set of proteins for translation and energy generation in elementary bodies of the amoeba symbiont Protochlamydia amoebophila
Re-annotation and re-analysis of the Campylobacter jejuni NCTC11168 genome sequence
Oxidative stress: Molecular perception and transduction of signals triggering antioxidant gene defenses
Cellular defenses against superoxide and hydrogen peroxide
Oxidative stress triggers thiol oxidation in the glyceraldehyde-3- phosphate dehydrogenase of Staphylococcus aureus
Superoxide dismutase and oxygen toxicity defenses in the genus Neisseria
The Many Faces of Gluthathione in Bacteria
Identification of proteins related to the stress response in Enterococcus faecalis V583 caused by bovine bile
Oxidative stress in bacteria and protein damage by reactive oxygen species
Oxidative stress response in the opportunistic oral pathogen Fusobacterium nucleatum
Proteomic analysis of antioxidant strategies of Staphylococcus aureus: diverse responses to different oxidants
Specialization of an Exonuclease III family enzyme in the repair of 3′ DNA lesions during base excision repair in the human pathogen Neisseria meningitidis
Post-translational modifications of desulfovibrio vulgaris hildenborough sulfate reduction pathway proteins
Conjugative DNA transfer induces the bacterial SOS response and promotes antibiotic resistance development through integron activation
The DNA-binding activity of the Neisseria gonorrhoeae LexA orthologue NG1427 is modulated by oxidation
The peroxide stress response of Bacillus licheniformis
Control of bacterial virulence by AraC-like regulators that respond to chemical signals
Novel bacterial MerR-like regulators: Their role in the response to carbonyl and nitrosative stress
Prokaryotic transcription regulators: More than just the helix-turn-helix motif
Beyond gene expression: The impact of protein post-translational modifications in bacteria
Transcriptome and physiological responses to hydrogen peroxide of the facultatively phototrophic bacterium Rhodobacter sphaeroides
That Controls Twitching Motility and Virulence in Xylella fastidiosa
Functional selection of a type IV pili-binding peptide that specifically inhibits Salmonella Typhi adhesion to/invasion of human monocytic cells
Ribosome binding proteins YhbH and YfiA have opposite functions during 100S formation in the stationary phase of Escherichia coli
Bacteriophages and insertion sequences of Chromobacterium violaceum ATCC 12472
Hydrogen peroxide-mediated induction of the Shiga toxin-converting lambdoid prophage ST2–8624 in Escherichia coli O157:H7
Influence of the Escherichia coli oxyR gene function on λ prophage maintenance
Intravenous immunoglobulin prevents murine antibody-mediated acute lung injury at the level of neutrophil reactive oxygen species (ROS) production
CRISPR-Cas Systems in Bacteria and Archaea: Versatile Small RNAs for Adaptive Defense and Regulation
Csy4 is responsible for CRISPR RNA processing in Pectobacterium atrosepticum
Sequence- and structure-specific RNA processing by a CRISPR endonuclease
Creation of a thermostable NADP+-dependent D-amino acid dehydrogenase from Ureibacillus thermosphaericus strain A1 meso-diaminopimelate dehydrogenase by site-directed mutagenesis
A rapid and sensitive method for the quantitation of microgram quantities of protein utilizing the principle of protein-dye binding
In-gel digestion for mass spectrometric characterization of proteins and proteomes
ProLuCID: An improved SEQUEST-like algorithm with enhanced sensitivity and specificity
Search engine processor: Filtering and organizing peptide spectrum matches
Proteomic parsimony through bipartite graph analysis improves accuracy and transparency
Improving the TFold test for differential shotgun proteomics
PatternLab: From mass spectra to label-free differential shotgun proteomics
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The authors are also grateful to Jana Dara Freires de Queiroz for performing the experiments of catalase activity levels
Laboratório de Biologia Molecular e Genômica
Universidade Federal do Rio Grande do Norte
Ciência e Tecnologia do Rio Grande do Norte (IFRN)
Universidade Federal do Vale do São Francisco
Laboratório de Proteômica e Engenharia de Proteínas
acquisition of data and analysis and interpretation of data and drafted the manuscript
participated in the design of the study and analysis and interpretation of data
carried out the proteomics studies and writing of the manuscript
contributed to the study conception and design
writing of the manuscript and overall supervision
revising it critically for important intellectual content
All authors read and approved the final manuscript
The authors declare no competing financial interests
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Audio recordings are used to profile ecosystems and identify changes caused by humans
Linilson Padovese / USP Graphic representation of underwater sounds recorded at Laje de Santos State Park with a hydrophone built at USPLinilson Padovese / USP
Marina Duarte / Puc-Minas Equipment records ambient sounds in an area of the Cerrado in Minas GeraisMarina Duarte / Puc-Minas
Diogo Sergio / Wikimedia Commons An area of Caatinga in Rio Grande do NorteDiogo Sergio / Wikimedia Commons
She installed microphones both inside a well-preserved section of forest and along its edge, 500 meters from the Brucutu mine, one of the largest iron ore extraction sites in the world. From October 2012 to August 2013, the sounds were recorded for seven-day stretches, with an interval of two months. Explosions, sirens, machine noises, and especially the traffic of heavy trucks, which can number 700 per day at certain times of the year, affected most of the study area.
The effects were most intense at the edge of the forest, 25 meters from the road the ore was transported on. There, the complexity of sounds was significantly lower than in the section’s interior, indicative of less species diversity. The sonic richness on the edge of the forest near the mine was also lower than in another much less noisy border area, near a dirt road used by cars.
Eliziane Garcia De Oliveira A graphical representation of bird
and rain sounds recorded at different timesEliziane Garcia De Oliveira
Insect sounds Vocalizations and other sounds made by the animals were more frequent during the day than at night in the forest nearest the mining area
while the opposite was true for the more distant area
The frequency range in which insects produced their sounds also differed between the first and second locations
Most likely as an adaptation to the noisy environment
they chirped in a narrower frequency range (lower or shriller than the machine noise) at the forest’s edge near the Brucutu mine
while insects in the deeper forest area employed a wider sonic range
the researchers report in an article published in 2015 in the journal Biological Conservation
such as the toco toucan (Ramphastos toco) and the plumbeous pigeon (Patagioenas plumbea)
were only heard in deep forest areas far from the mine
Sousa-Lima and his team at the UFRN Bioacoustics Laboratory are working on creating sound profiles of other ecosystems
biologist Eliziane Garcia de Oliveira made recordings during both the dry and rainy seasons in an area of the Caatinga (semiarid scrublands)
She is investigating the impact of wind power generators on this soundscape and
before finding out if anything will change
needed to know the natural behavior of the ecosystem
bleached vegetation is silent for most of the year
as well as tweets and warbles of one or another bird
and the Caatinga is transformed: the stridulation of insects intensifies
other birds begin to sing and the chatter of toads
“The sonic environment becomes complex,” Oliveira summarizes
biologist Luane Ferreira compared six acoustic indices with the aural identifications resulting from manually counted sound logs
from three areas of Cerrado in Serra da Canastra National Park in Minas Gerais State
Graphic representations of the soundscape indices and the logs are then correlated to the recordings
published in 2018 in the Journal of Eco-acoustics
none of the indices fully captured the species diversity of this tropical environment
Music and environment The origin of this new area of ecology
formalized in a series of articles presented in 2011 in a special issue of the journal Landscape Ecology
in particular the work of American musician Bernie Krause
Krause began his career in the 1960s as a studio guitarist and worked with rock bands such as The Doors and The Rolling Stones
which introduced synthesizers in pop music and film
His career began to change in 1968 when he and Beaver were hired by a record label to make a series of unusual albums
would be the first to include long stretches of nature sounds
Krause has accumulated about 5,000 hours of recordings
including works such as The Great Animal Orchestra Symphony
Symphony for Orchestra and Wild Soundscapes
written by British composer Richard Blackford in collaboration with Krause
and humpback whales mix with those of violins
and other orchestral instruments in the work
In a commentary published in July 2018 in the journal Biotropica
a group of biologists and ecologists from the United States
and Brazil reaffirmed the need to increase the acoustic monitoring of tropical ecosystems
The text proposes creating a global repository of the recordings
“Soundscape recordings provide a permanent record of a particular location at a given time and contain a wealth of invaluable and irreplaceable data,” the group stated
Recorders have become cheaper and data storage systems have improved
a failure to collect sonic data on tropical ecosystems could present a serious problem for future generations who could benefit from ecology research
Brazilian footballer Vinicius Tobias has discovered that he is not the biological father of the child he believed to be his
had even gotten a tattoo in honour of the unborn child before receiving the devastating news
The revelation came after his ex-girlfriend
which confirmed that Tobias was not the biological father of the baby girl
Lima shared the news on her Instagram stories
Vinicius and I haven’t been together for a while
and it turns out Maitê is not Vinicius’ daughter,” Lima explained in a now-deleted post
the child’s real father is speculated to be Vinicius Duarte
an açaí delivery man with whom Lima had an affair during her on-and-off relationship with Tobias
Reports indicate that both Vinicius and Lima had a rocky relationship marked by infidelity on both sides
Sources close to the couple revealed that Lima’s involvement with Duarte occurred during one of her breakups with the footballer
though the specifics of his actions remain unclear
The betrayal has been especially hard on Tobias
who had already tattooed Maitê’s name
Lima urged the public to stop attacking Tobias
clarifying that he had respected her request not to attend the delivery or post anything about the child until the DNA test results were confirmed
“We’ve talked things through and settled everything amicably
and we both hope to move on peacefully,” Lima stated
who was on loan at Real Madrid from Shakhtar Donetsk until the summer of 2024
He spent two seasons with Madrid’s B team
since the first team’s non-EU player slots were filled
Tobias earned medals for Madrid’s Champions League and Supercopa de España triumphs during the 2023/24 season
Tobias is taking time to process the personal setback while continuing his professional journey in Ukrainian football
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