Volume 12 - 2025 | doi: 10.3389/fvets.2025.1541019
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The recurring epizootics of highly pathogenic avian influenza (HPAI) in France have been associated with changes in the epidemiological landscape
such as higher frequency of detections in wild birds and introductions into backyard farms
This highlights the need for a deeper understanding of the factors that drive the spread of HPAI
we examined various farm and environmental variables around the 2022-2023 outbreak sites in France to unravel potential common traits among detected outbreaks
including different species and production types
the farm characteristics and variables related with their direct environment within a 2km radius were collected
accounting for qualitative and quantitative variable
clusters were identified using k-medoid partitioning algorithm
A random forest analysis was further used to hierarchize the relative role of each variable in the clustering process
to assess the importance of the farm structural and environmental conditions on the outbreak occurrence.To disentangle the impact of environmental factors from intrinsic herd characteristics
using the whole dataset including the farm characteristics and environmental variables (first scenario); second
accounting exclusively for the environmental variables (second scenario)
farm variables such as farm type were crucial in the clustering process
overpassing most of the environmental factors
although the distance from "particular risk zones" and the coastline were also important
the clusters obtained with the second scenario that counts only for the environmental variables
Received: 06 Dec 2024; Accepted: 30 Apr 2025
Copyright: © 2025 BEN SALEM, Andraud, Bougeard, Allain, Salines, Thomas, Schmitz, Saint-Cyr, Fiore, Le Bouquin and Scoizec. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY)
distribution or reproduction in other forums is permitted
provided the original author(s) or licensor are credited and that the original publication in this journal is cited
in accordance with accepted academic practice
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Agence Nationale de Sécurité Sanitaire de l’Alimentation
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Trees and other vegetation grow on the site of a former soap factory in northwestern France
While the greenery suggests all is well in the Ploufragan commune near the Brittany coast
the truth is that a plant for making cleaning products has left a mess
The surrounding soil is saturated with toxic hydrocarbons – byproducts of the soap production
Tackling such environmental damage is a priority for Dr Thomas Reichenauer under a research project that has received EU funding to investigate how microbes can be used to break down contaminants in soil and groundwater.The problem is pressing because poisonous substances in the soil can seep into plants
senior scientist at the Austrian Institute of Technology in Vienna
it will take decades – or hundreds of years – until nature breaks them down completely,’ he said
The EU has an estimated 2.8 million contaminated sites ranging from old industrial zones to landfills
Clean-up efforts vary across Member States
with Germany and the Netherlands leading the way
The groundwater dimension is all the more acute because of worsening climate change
which threatens to cause increasingly severe droughts
So even as groundwater becomes a more precious resource
less may be available to drink if it contains industrial pollutants
Reichenauer coordinates a project called MIBIREM that has received EU funding to speed up the process of decontaminating soil and groundwater by learning more about their microbiome – the collection of microorganisms in a particular environment
The researchers are trying to figure out how microbes interact to break down three particular contaminants: cyanides
hexachlorocyclohexane and petroleum hydrocarbons
While cyanides and hexachlorocyclohexane are less prevalent
they’re toxic enough to warrant developing technology for breaking them down
The initiative began in October 2022 and runs until end-March 2027
The process by which microbes can be stimulated to ramp up their consumption of contaminants is called bioremediation
who originally trained as a geneticist and plant physiologist
‘Bioremediation is eco-friendly as we don’t have to introduce any toxic or dangerous chemicals,’ he said
There are other ways of removing pollutants from soil
Plants have been studied as a potential method for removing heavy metals
But few commercial ventures exist because the removal process – another form of bioremediation – is slow
offers only a partial solution because it typically removes toxic substances by adding fewer from the outset
MIBIREM will focus entirely on using microbes because they have the potential to be the fastest and most eco-friendly option
The project ultimately wants to come up with bioremediation tools for different industrial spots across Europe
researchers hope to identify particularly useful microbes and store them for later use
MIBIREM is focused on developing technologies that can be used on-site
sparing itself the hassle of excavating soil and transporting it
Because the project targets mainly industrial spots
treating soil in the original place is sometimes the only option
In the case of the factory site in Ploufragan
where soap was produced for almost half a century until the mid-1990s
this would mean being able to treat the area without digging up the vegetation that has grown there since the buildings were demolished in 2017
‘If you can show that it works in the fields
then there is a good chance that it can be commercially applied later on,’ said Reichenauer
The global market for microbial bioremediation was valued at around €42 million in 2021
It’s projected to grow to about €85 million by the end of the decade
Reichenauer sought to soothe any concerns that people might have about altering the microbiome of soil to remove contaminants
saying such changes are neither negative nor positive and occur in line with environmental influences regardless of any human intervention
MIBIREM could help the EU meet targets set under a mission called “A Soil Deal for Europe”
which seeks a transition towards healthy soils by 2030
The use of microbes for bioremediation has also been the focus of an EU-funded project called GREENER
which is due to finish this August after four and a half years
soil from a former machinery park was excavated and treated on-site
where microbes were used to remove hydrocarbons
microbes enabled the removal of heavy metals from the groundwater without extracting it
‘We are working with clients that have a contamination problem and assisting companies that are performing remediation of the site,’ said Rocío Barros
‘Better understanding the microbiome in the soil will be very important for improving technologies that address soil pollution.’
GREENER went beyond MIBIREM in one respect: trying to create energy during the bioremediation process
By coupling energy generation with soil and wastewater cleaning
GREENER sought to help diversify the EU’s power sources while removing pollutants from the environment
The energy component involves the use of microbial fuel cells
As microbes break down organic molecules like hydrocarbons
chemical energy is converted into usable electrical energy
Results on this front have been less than promising when it comes to ramping up such activity
sustainability and toxicology research group at the University of Burgos in Spain
‘Not all of the microbial fuel cells have reached a good enough performance for scaling up,’ she said
This aspect of the project highlights the risks involved in research and development and
the importance of funding sources including the EU
Some of the microbial fuel cells being used to treat water have shown potential
‘The use of the fuel cells with wetlands has been very good,’ said Barros
Hoping that microbial fuel cells can be further advanced, she is now developing a film that could be added to them to improve electricity generation under a new EU-funded project – BIOSYSMO – that is a successor of sorts to GREENER and that runs for four years through August 2026.
(This article was updated on 21 July 2023 to add a reference in the final paragraph to a new EU research project in the field)
Research in this article was funded by the EU
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EU Mission: A Soil Deal for Europe“A Soil Deal for Europe” seeks to reduce pollution in the ground and protect the numerous species that live in it
an estimated 60-70% of EU soils are unhealthy
The Mission reflects soil’s role as a foundation for food production
will spearhead the Mission’s aim to transition to healthier soils by 2030
Read more about the EU’s Soil Mission here.
Contact Horizon
so that percentage could soon be much less
Researchers at the Lawrence Berkeley National Laboratory at the University of California Berkeley
They have created a plastic with chemical bonds that make it much easier to recycle, according to a study published Monday in Nature Chemistry
(MORE: New York City to Require Buildings to Cut Greenhouse Gas Emissions in First of Its Kind Law)
When plastic is recycled, additives used to make it stronger or flame retardant or a specific color are hard to separate, Science magazine reports
That recycling also is "costly, energy-demanding and usually produces poor-quality materials," according to an editorial accompanying the new study
Recycled plastic doesn't perform as well as new raw material
The Berkeley Lab plastic's chemical bonds allow it to be separated from additives and other unwanted materials using a strong acid
Then pristine plastic can be recovered using a simple procedure
and it can be used to create a material nearly identical to the original
(MORE: Microplastics Found High in the Pristine Pyrenees Mountains in France)
The work of the researchers "takes us considerably closer to the synthesis of plastics that have minimal environmental impact," the Nature Chemistry editorial said
"The development of robust materials that combine excellent chemical and heat resistance with outstanding recycling capabilities could greatly assist the transition from the current linear model of plastics production and consumption — in which limited resources are used to make products that have a finite lifetime and are then disposed of — to a sustainable
circular economy that minimizes waste and maximizes resource use," it said
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They have created a plastic with chemical bonds that make it much easier to recycle, according to a study published Monday in Nature Chemistry
(MORE: New York City to Require Buildings to Cut Greenhouse Gas Emissions in First of Its Kind Law)
When plastic is recycled, additives used to make it stronger or flame retardant or a specific color are hard to separate, Science magazine reports
That recycling also is \\\"costly, energy-demanding and usually produces poor-quality materials,\\\" according to an editorial accompanying the new study
Recycled plastic doesn't perform as well as new raw material
The Berkeley Lab plastic's chemical bonds allow it to be separated from additives and other unwanted materials using a strong acid
(MORE: Microplastics Found High in the Pristine Pyrenees Mountains in France)
The work of the researchers \\\"takes us considerably closer to the synthesis of plastics that have minimal environmental impact,\\\" the Nature Chemistry editorial said
\\\"The development of robust materials that combine excellent chemical and heat resistance with outstanding recycling capabilities could greatly assist the transition from the current linear model of plastics production and consumption — in which limited resources are used to make products that have a finite lifetime and are then disposed of — to a sustainable
circular economy that minimizes waste and maximizes resource use,\\\" it said
Translated from Metabiot : l'Intelligence Artificielle pour une meilleure alimentation
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by opening a new Research & Development centre in Ploufragan
The new Genomics Laboratory is a central hub for global molecular DNA work for all Hendrix Genetics divisions
and is already producing new innovations in breeding
Blood and tissue samples are taken from the poultry, pig and aquaculture divisions
Samples are then transported to the Genomics Laboratory
where DNA is extracted and stored in a BioBank
geneticists of Hendrix Genetics use these to develop breeding programs for the divisions or directly into customer breeding programs
Director of the Hendrix Genetics Research & Technology Centre
is satisfied both about the initial results and the huge potential of the laboratory: “this is a valuable asset to the breeding programs of Hendrix Genetics and is truly one of a kind in this industry
it is widening the opportunity for future developments in all our divisions
we are already thoroughly excited to see what we have brought and what we can continue to bring to the market