Insights into the history of the legume-betaproteobacterial symbiosis
- 1 January 2010
- journal article
- Published by Wiley in Molecular Ecology
- Vol. 19 (1), 28-30
- https://doi.org/10.1111/j.1365-294x.2009.04459.x
Abstract
The interaction between legumes and rhizobia has been well studied in the context of a mutualistic, nitrogen-fixing symbiosis. The fitness of legumes, including important agricultural crops, is enhanced by the plants' ability to develop symbiotic associations with certain soil bacteria that fix atmospheric nitrogen into a utilizable form, namely, ammonia, via a chemical reaction that only bacteria and archaea can perform. Of the bacteria, members of the alpha subclass of the protebacteria are the best-known nitrogen-fixing symbionts of legumes. Recently, members of the beta subclass of the proteobacteria that induce nitrogen-fixing nodules on legume roots in a species-specific manner have been identified. In this issue, Bontemps et al. reveal that not only are these newly identified rhizobia novel in shifting the paradigm of our understanding of legume symbiosis, but also, based on symbiotic gene phylogenies, have a history that is both ancient and stable. Expanding our understanding of novel plant growth promoting rhizobia will be a valuable resource for incorporating alternative strategies of nitrogen fixation for enhancing plant growth.Keywords
This publication has 7 references indexed in Scilit:
- Burkholderiaspecies are ancient symbionts of legumesMolecular Ecology, 2009
- Multichromosomal Genome Structure and Confirmation of Diazotrophy in Novel Plant-Associated Burkholderia SpeciesApplied and Environmental Microbiology, 2008
- Proof that Burkholderia Strains Form Effective Symbioses with Legumes: a Study of Novel Mimosa -Nodulating Strains from South AmericaApplied and Environmental Microbiology, 2005
- Legume Symbiotic Nitrogen Fixation byβ-Proteobacteria Is Widespread inNatureJournal of Bacteriology, 2003
- Changing concepts in the systematics of bacterial nitrogen-fixing legume symbiontsThe Journal of General and Applied Microbiology, 2003
- Nodulation of legumes by members of the β-subclass of ProteobacteriaNature, 2001
- Burkholderia , a Genus Rich in Plant-Associated Nitrogen Fixers with Wide Environmental and Geographic DistributionApplied and Environmental Microbiology, 2001