Biological Resource Center
The specifics of biodiversity issues in agriculture are directly linked to all genetic resources, whether microbial, plant or animal. They require the recognition of these multiple components, their functionality and their interactions to ensure their conservation and enhancement. Managing these biological resources is to preserve them ex- and in-situ, but also to inventory, characterize and evaluate them as well as to regenerate and disseminate them with their related knowledge.
These are the reasons why an innovative Biological Resource Center (BRC) including different types of plant and microbial resources was created at Dijon (France) to study agro-ecosystems. This BRC aims at promoting technical aspects to preserve the diversity of organisms, to improve identification and characterization tools, to organize databases to merge taxonomic and ecological traits of organisms and to rise up the Quality Standard to provide biological resources on request following exchange of an MTA form.
The components are:
- Weeds : They are extraordinarily diverse. For research purposes (life history traits, herbicide resistance research, seed identification), the collection includes c.a. 430 weed species (1100 seed samples mostly isolated from France) and seed specimens from c.a. 780 species to serve as references for species identification purposes. Additional seed collections include c.a. 1000 accessions from noxious weeds (containing herbicide-resistant plants).
- Legumes : The INRA-Dijon Grain Legumes Collection harbors 3 main legume species: pea, faba bean, and lupin spp. counting more than 1000 accessions per species including landraces, mutants and wild forms. These resources are the subject of genetic and phenotypic characterization permitting the definition of core collections and the development of association genetics strategies.
- Arbuscular mycorrhizal (AM) fungi : The International Bank for the Glomeromycota (IBG) is a structure for preserving AM fungal biodiversity and registering well-defined isolates in an internationally-accredited database. The IBG in Dijon: 1) maintains a core germplasm reservoir of fungal diversity (45 accessions/250 cultures) on host plants, 2) supplies certified reference cultures to researchers, 3) develops molecular probes, 4) preserves commercial fungal lines for industrials, 5) provides technical training for users.
- Microorganisms : The MIAE (Microorganisms of Interest for Agriculture and Environment) structure is holding over 10000 soil-borne microbial strains belonging to 48 genera of fungi and oomycetes and 13 genera of bacteria. These microorganisms have been isolated during 30 years of scientific investigations related to soil functioning. Fungal and bacterial identification is based on chemotaxonomic and/or metabolic properties and on the use of appropriate molecular tools. The creation of a unique and common collection aiming at guaranteeing the preservation of these microbial resources and all the related data required a specific approach based on High Quality Standard.
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