Host-specific competitiveness to form nodules in Rhizobium leguminosarum symbiovar viciae

Bibliographische Detailangaben
Veröffentlicht in:	The New phytologist. - 1979. - 226(2020), 2 vom: 01. Apr., Seite 555-568
1. Verfasser:	Boivin, Stéphane (VerfasserIn)
Weitere Verfasser:	Ait Lahmidi, Nassima, Sherlock, David, Bonhomme, Maxime, Dijon, Doriane, Heulin-Gotty, Karine, Le-Queré, Antoine, Pervent, Marjorie, Tauzin, Marc, Carlsson, Georg, Jensen, Erik, Journet, Etienne-Pascal, Lopez-Bellido, Raphael, Seidenglanz, Marek, Marinkovic, Jelena, Colella, Stefano, Brunel, Brigitte, Young, Peter, Lepetit, Marc
Format:	Online-Aufsatz
Sprache:	English
Veröffentlicht:	2020
Zugriff auf das übergeordnete Werk:	The New phytologist
Schlagworte:	Journal Article Research Support, Non-U.S. Gov't Pisum sativum Vicia faba Rhizobium leguminosarum symbiovar viciae competitiveness genospecies nod genes nodules symbiosis

Beschreibung
Zusammenfassung:	© 2019 The Authors. New Phytologist © 2019 New Phytologist Trust. Fabeae legumes such as pea and faba bean form symbiotic nodules with a large diversity of soil Rhizobium leguminosarum symbiovar viciae (Rlv) bacteria. However, bacteria competitive to form root nodules (CFN) are generally not the most efficient to fix dinitrogen, resulting in a decrease in legume crop yields. Here, we investigate differential selection by host plants on the diversity of Rlv. A large collection of Rlv was collected by nodule trapping with pea and faba bean from soils at five European sites. Representative genomes were sequenced. In parallel, diversity and abundance of Rlv were estimated directly in these soils using metabarcoding. The CFN of isolates was measured with both legume hosts. Pea/faba bean CFN were associated to Rlv genomic regions. Variations of bacterial pea and/or faba bean CFN explained the differential abundance of Rlv genotypes in pea and faba bean nodules. No evidence was found for genetic association between CFN and variations in the core genome, but variations in specific regions of the nod locus, as well as in other plasmid loci, were associated with differences in CFN. These findings shed light on the genetic control of CFN in Rlv and emphasise the importance of host plants in controlling Rhizobium diversity
Beschreibung:	Date Completed 14.05.2021 Date Revised 14.05.2021 published: Print-Electronic Citation Status MEDLINE
ISSN:	1469-8137
DOI:	10.1111/nph.16392