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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
environmental science
Genetic diversity of Mimosa pudica rhizobial symbionts in soils of French Guiana: Investigating the origin and diversity of Burkholderia phymatum and other beta-rhizobia
FEMS Microbiology Ecology, Volume 79, No. 2, Year 2012
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Description
The genetic diversity of 221 Mimosa pudica bacterial symbionts trapped from eight soils from diverse environments in French Guiana was assessed by 16S rRNA PCR-RFLP, REP-PCR fingerprints, as well as by phylogenies of their 16S rRNA and recA housekeeping genes, and by their nifH, nodA and nodC symbiotic genes. Interestingly, we found a large diversity of beta-rhizobia, with Burkholderia phymatum and Burkholderia tuberum being the most frequent and diverse symbiotic species. Other species were also found, such as Burkholderia mimosarum, an unnamed Burkholderia species and, for the first time in South America, Cupriavidus taiwanensis. The sampling site had a strong influence on the diversity of the symbionts sampled, and the specific distributions of symbiotic populations between the soils were related to soil composition in some cases. Some alpha-rhizobial strains taxonomically close to Rhizobium endophyticum were also trapped in one soil, and these carried two copies of the nodA gene, a feature not previously reported. Phylogenies of nodA, nodC and nifH genes showed a monophyly of symbiotic genes for beta-rhizobia isolated from Mimosa spp., indicative of a long history of interaction between beta-rhizobia and Mimosa species. Based on their symbiotic gene phylogenies and legume hosts, B. tuberum was shown to contain two large biovars: one specific to the mimosoid genus Mimosa and one to South African papilionoid legumes. © 2011 Federation of European Microbiological Societies. Published by Blackwell Publishing Ltd.
Authors & Co-Authors
Mishra, Ravi P.N.
France, Montpellier
Laboratoire Des Symbioses Tropicales et Méditerranéennes
Italy, Siena
Novartis Vaccines and Diagnostic S.r.l.
Tisseyre, Pierre
France, Montpellier
Laboratoire Des Symbioses Tropicales et Méditerranéennes
Melkonian, Rémy
France, Montpellier
Laboratoire Des Symbioses Tropicales et Méditerranéennes
Chaintreuil, Clémence
France, Montpellier
Laboratoire Des Symbioses Tropicales et Méditerranéennes
Miché, Lucie
France, Montpellier
Laboratoire Des Symbioses Tropicales et Méditerranéennes
Klonowska, Agnieszka
France, Montpellier
Laboratoire Des Symbioses Tropicales et Méditerranéennes
Gonzalez, Sophie
French Guiana, Cayenne
Ird
Béna, Gilles
Morocco, Rabat
Mohammed V University in Rabat
Laguerre, Gisèle
France, Montpellier
Laboratoire Des Symbioses Tropicales et Méditerranéennes
Moulin, Lionel
France, Montpellier
Laboratoire Des Symbioses Tropicales et Méditerranéennes
Statistics
Citations: 102
Authors: 10
Affiliations: 4
Identifiers
Doi:
10.1111/j.1574-6941.2011.01235.x
ISSN:
01686496
e-ISSN:
15746941
Research Areas
Genetics And Genomics