%0 Journal Article
%9 ACL : Articles dans des revues avec comité de lecture répertoriées par l'AERES
%A Boivin, Stéphane
%A Lepetit, M.
%T Partner preference in the legume-rhizobia symbiosis and impact on legume inoculation strategies
%D 2020
%L PAR00022136
%G ENG
%J Advances in Botanical Research : Regulation of Nitrogen-Fixing Symbioses in Legumes
%@ 0065-2296
%K leguminosarum biovar viciae ; competitive nodulation blocking ; pisum-sativum l. ; n-2 fixation ; medicago-truncatula ; nodule formation ; trifolitoxin production ; feedback mechanism ; nitrogen addition ; secretion systems
%M ISI:000608999000012
%P 323-348
%R 10.1016/bs.abr.2019.09.016
%U https://www.documentation.ird.fr/hor/PAR00022136
%> https://www.documentation.ird.fr/intranet/publi/depot/2021-04-01/010080276.pdf
%V 94
%W Horizon (IRD)
%X Legumes interact with diverse soil bacteria of the genus Rhizobium to form dinitrogen (N-2)-fixing symbiotic root nodules. This symbiotic interaction occurs under plant nitrogen (N)-deficit and only between compatible partners. When young nodules are formed, bacteroids begin to fix atmospheric N-2 and provide ammonium to the plant which in return provides phytosynthates to the bacteria. Ability and Competitiveness to Form root Nodules (AFN and CFN) within natural populations have a strong impact on early partner choice. In soil, there are frequently multiple compatible partners and legume roots are often colonized by multiple rhizobia displaying different Symbiotic N-2 Fixation (SNF) efficiencies. In mature nodules, Post-Infection Partner Preference (PIPP) shape partner choice by favoring effective symbiotic N-2 fixing structures to the expense of inefficient ones. Little is known about mechanisms involved in legume-rhizobium partner choices despite the relevance of this trait to design new strategies to improve inoculation of legume crops.
%$ 084 ; 076