ArticleJournal of bacteriology2007
Horizontal gene transfer and homologous recombination drive the evolution of the nitrogen-fixing symbionts of Medicago species.
Article in Journal of bacteriology, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 27 papers.
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Who cites it
27 citing papers in PubMed, 83 citations in OpenAlex.
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- Electrophoretic profiles of lipopolysaccharides from Rhizobium strains nodulating Pisum sativum do not reflect phylogenetic relationships between these strains.Archives of microbiology · 2017Article
- No evidence for adaptation to local rhizobial mutualists in the legumeEcology and evolution · 2017Article
- Biogeography of a Novel Ensifer meliloti Clade Associated with the Australian Legume Trigonella suavissima.Applied and environmental microbiology · 2017Article
- High-quality draft genome sequence ofStandards in genomic sciences · 2017Article
- Phylogenetic Diversity of Ammopiptanthus Rhizobia and Distribution of Rhizobia Associated with Ammopiptanthus mongolicus in Diverse Regions of Northwest China.Microbial ecology · 2016Article
- Microcystin-tolerant Rhizobium protects plants and improves nitrogen assimilation in Vicia faba irrigated with microcystin-containing waters.Environmental science and pollution research international · 2016Article
- Decoupled genomic elements and the evolution of partner quality in nitrogen-fixing rhizobia.Ecology and evolution · 2016Article
- Genomic characterization of Sinorhizobium meliloti AK21, a wild isolate from the Aral Sea Region.SpringerPlus · 2015Article
- Phylogeny of Symbiotic Genes and the Symbiotic Properties of Rhizobia Specific to Astragalus glycyphyllos L.PloS one · 2015Article
- Article
- Large-scale intersubspecific recombination in the plant-pathogenic bacterium Xylella fastidiosa is associated with the host shift to mulberry.Applied and environmental microbiology · 2014Article
- Replicon-dependent differentiation of symbiosis-related genes in Sinorhizobium strains nodulating Glycine max.Applied and environmental microbiology · 2014Article
- Nodule carbohydrate catabolism is enhanced in the Medicago truncatula A17-Sinorhizobium medicae WSM419 symbiosis.Frontiers in microbiology · 2014Article
- Population genomics of the facultatively mutualistic bacteria Sinorhizobium meliloti and S. medicae.PLoS genetics · 2012Article
- The nodulation of alfalfa by the acid-tolerant Rhizobium sp. strain LPU83 does not require sulfated forms of lipochitooligosaccharide nodulation signals.Journal of bacteriology · 2011Article
- Genetic and metabolic divergence within a Rhizobium leguminosarum bv. trifolii population recovered from clover nodules.Applied and environmental microbiology · 2010Article
Corrections and comments
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Authors and funding
5 authors at 3 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Using nitrogen-fixing Sinorhizobium species that interact with Medicago plants as a model system, we aimed at clarifying how sex has shaped the diversity of bacteria associated with the genus Medicago on the interspecific and intraspecific scales. To gain insights into the diversification of these symbionts, we inferred a topology that includes the different specificity groups which interact with Medicago species, based on sequences of the nodulation gene cluster. Furthermore, 126 bacterial isolates were obtained from two soil samples, using Medicago truncatula and Medicago laciniata as host plants, to study the differentiation between populations of Sinorhizobium medicae, Sinorhizobium meliloti bv. meliloti, and S. meliloti bv. medicaginis. The former two can be associated with M. truncatula (among other species of Medicago), whereas the last organism is the specific symbiont of M. laciniata. These bacteria were characterized using a multilocus sequence analysis of four loci, located on the chromosome and on the two megaplasmids of S. meliloti. The phylogenetic results reveal that several interspecific horizontal gene transfers occurred during the diversification of Medicago symbionts. Within S. meliloti, the analyses show that nod genes specific to different host plants have spread to different genetic backgrounds through homologous recombination, preventing further divergence of the different ecotypes. Thus, specialization to different host plant species does not prevent the occurrence of gene flow among host-specific biovars of S. meliloti, whereas reproductive isolation between S. meliloti bv. meliloti and S. medicae is maintained even though these bacteria can cooccur in sympatry on the same individual host plants.
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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.