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Communication Dans Un Congrès Année : 2018

Interactions of plant-beneficial rhizosphere bacteria according to cereal genotype

Résumé

Roots of wheat and other cereals interact with a huge range of soil microorganisms, which colonize the rhizosphere and/or root tissues. This root-associated microbial community (sometimes termed the root microbiome) is important to consider because it includes both deleterious and symbiotic microorganisms. Therefore, it has a significant impact on plant growth, health and tolerance to stress. In this context, understanding root microbiome assembly and dynamics is of fundamental interest and could help design microbiome-based strategies for crop management. To address this issue, the significance of cereal genotype for root-microbiome interactions was studied. A relationship was found when comparing rhizobacterial communities with the phylogenetic distance between the corresponding plant genotypes, but this relationship held true only for a fraction of the community. It prompted us to assess how plant hosts selected for specific bacteria with plant-beneficial potential. This type of screening showed that the ability to interact with plant-beneficial bacteria had been largely counter-selected in modern wheat cultivars, yet it had been retained in some of them. The implications for plant-microbe interactions and breeding will be discussed.
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Dates et versions

hal-02338153 , version 1 (29-10-2019)

Identifiants

  • HAL Id : hal-02338153 , version 1
  • PRODINRA : 484793

Citer

Yvan Moenne-Loccoz, Jordan Valente, Marie-Lara Bouffaud, Brigitte Gouesnard, Jacques Le Gouis, et al.. Interactions of plant-beneficial rhizosphere bacteria according to cereal genotype. Eucarpia Cereal Section - Breeding cereals for sustainable agriculture, Mar 2018, Clermont-Ferrand, France. ⟨hal-02338153⟩
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