0000000000541146
AUTHOR
Zhu Liya
Different Medicago truncatula genotypes, expressing different phenotypes, modulate microbial functional genes in the rhizosphere
Plants host in their rhizosphere a remarkable diversity of microorganisms that in return promote plant growth and health. Thus, the plant microbiota emerges as a novel component that expand the capacity of plants to adapt to the environment, and thus pave the way for future breeding approaches.It is widely known that different plant species harbor different microbiota, but very few studies showed an impact of the plant genotypes on the microbiota. These contrasting results may depend on the choice of the tested genotypes.We formulate the hypothesis that only those plant genotypes showing high genetic diversity and expressing different phenotypes harbor different rhizosphere microbiota and a…
Functional Core microbiota: identification and involvement in plant nutrition
Plants host in their rhizosphere a remarkable diversity of microorganisms that in return can promote plant growth and health. The microbiota that is systematically associated with a given plant genotype is called the core microbiota. However, the core microbiota has been mostly defined on taxonomic basis, whilst the microbiota recruited by the plant in different environments seems to share greater functional similarity and the concept of core functional microbiota has been proposed accordingly. The purpose of the PhD thesis is to give evidence of the existence of a core functional microbiota. The PhD thesis aims to: (i) assess the impact of different plant genotypes on the rhizosphere funct…
Variable and core functional microbiota associated with seven Medicago truncatula genotypes
The rhizosphere microbiota emerges as a novel component that expands plant adaptation to its environment, and thus paves the way for future breeding approaches. Knowledge regarding the "functional core microbiota", which refers to the microbial taxa bearing essential functions for holobiont fitness, is required to move forward in this area. The aim of the present study was to compare the functional microbiota recruited by different plant genotypes in order to identify itscore and variable components. Seven genotypes of Medicago truncatula (DZA315-16, DZA315-26, DZA045-6, F83005-5, SA028064, Jemalong A17 and J6), representatives of a core collection of 184 genotypes, were studied. Functional…