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BIOGER (Biology, Agricultural Risk Management)

UMR (Joint Research Unit) AgroParisTech, Inra

General scientific orientation

The BIOGER joint research unit, the French reference center for research into fungal diseases of field crops (wheat, rapeseed) and grapevine, develops pluridisciplinary genomics, molecular biology and biochemistry, cell biology, genetics, population genetics, evolution, epidemiology, modeling, phenotyping, diagnosis and taxonomy) and multiscale (from gene to landscape) approaches. Our study models are the pathogenic agents responsible for fungal diseases of major economic importance : wheat rusts (Puccinia striiformis and Puccinia triticina), blackleg in rapeseed (Leptosphaeria maculans), septoria leaf blotch in wheat (Zymoseptoria tritici), and gray mold (Botrytis cinereal, on grapevine and many other cultivated and wild plants). The work of the BIOGER unit and our collaborators has led to these fungal species being raised to the level of models for certain of their genomic, biological, ecological or adaptive traits.

The work of the unit is organized around three major transverse research axes :
♦ Understanding the mechanism of biotic interactions within the ecosystem of an attacked plant ;
♦ Identifying the causes and consequences of adaptation, at different scales ;
♦ Developing, evaluating and transferring sustainable strategies for the management of fungal diseases (with this research axis building on data from the other two research axes).

The joint research unit generates both fundamental and operational knowledge, enabling us to respond to the demands of society and of the various agricultural sectors concerning the effective and sustainable management of fungal diseases of field crops.

Fields of research

The unit consists of six teams :
Epidemiology team (airborne diseases of wheat)
♦ Characterization of the development of plant diseases and of the factors influencing their dynamics
♦ Design and evaluation of effective and sustainable modes of management for resistant varieties
♦ Studies of induction of the pathogen biological cycle and the importance of components of this cycle for epidemics
♦ Identification of the genetic basis of pathogenic potential and characterization of its variability at the population scale

Antifungal agents, mode of action and resistance team (Amar)
♦ Studies of the adaptation of plant-pathogenic fungi to antifungal agents
♦ Evaluation of the impact of modeling-based strategies for combating the evolution of resistance

Effectors of pathogenesis in Leptosphaeria maculans team (EPLM)
♦ Understanding the mechanisms involved in the adaptation of Leptosphaeria maculans to rapeseed, through an integrated approach (gene to field)
♦ Characterization of the molecular determinants of the rapeseed/fungus interaction
♦ Proposal of effective and sustainable strategies based on biological, population-based and genetic knowledge of the pathogenic agent

Secondary metabolism and necrotrophy in Botrytis cinerea team (MSN-Bot)
♦ Understanding the role of secondary metabolites in the necrotrophic development of fungi
♦ Identifying secondary metabolites involved in the infectious process
♦ Determining their mode of action and characterizing the regulation of their biosynthesis

Evolution and genomics of plant/pathogen interactions team (Égip)
♦ Understanding the mechanisms at work in interactions between fungi and their host plants
♦ Understanding the adaptation of the pathogen to its host plant and environment

Molecular analysis of the pathogenic potential of Colletotrichum team (AMPC)
♦ Studies of the molecular basis of the pathogenicity of Colletotrichum, a pathogen of brassicas
♦ Understanding the role of particular fungal structures involved in plant penetration (apressoria) during the early stages of infection

For more information
Publications
Check out the open access publications of BIOGER on HAL-AgroParisTech :
https://bit.ly/2FeWr3N
and
https://bit.ly/2UKDRa5

Contact details
direction.bioger chez inra.fr
www6.versailles-grignon.inra.fr/bioger
+ 33 (0)1 30 81 54 37

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