ArticleApplied and environmental microbiology2009
Genetic diversity and host range of rhizobia nodulating Lotus tenuis in typical soils of the Salado River Basin (Argentina).
Article in Applied and environmental microbiology, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.
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13 citing papers in PubMed, 84 citations in OpenAlex.
- Comparative genomic and transcriptomic analyses provide new insight into symbiotic host specificity.iScience · 2024Article
- New Insights into the Taxonomy of Bacteria in the Genomic Era and a Case Study with Rhizobia.International journal of microbiology · 2022Review
- Diversity, Phylogeny and Plant Growth Promotion Traits of Nodule Associated Bacteria Isolated fromMicroorganisms · 2020Article
- Whole-Genome Sequencing ofFrontiers in microbiology · 2020Article
- Selection of Competitive and Efficient Rhizobia Strains for White Clover.Frontiers in microbiology · 2019Article
- Horizontal Transfer of Symbiosis Genes within and Between Rhizobial Genera: Occurrence and Importance.Genes · 2018Review
- Article
- The Rhizobia-Frontiers in microbiology · 2018Review
- Specificity in Legume-Rhizobia Symbioses.International journal of molecular sciences · 2017Review
- Whole-genome sequencing of Mesorhizobium huakuii 7653R provides molecular insights into host specificity and symbiosis island dynamics.BMC genomics · 2014Article
- Genotypic characterization of phage-typed indigenous soybean bradyrhizobia and their host range symbiotic effectiveness.Microbial ecology · 2012Article
- Characterization of strains unlike Mesorhizobium loti that nodulate lotus spp. in saline soils of Granada, Spain.Applied and environmental microbiology · 2010Article
- Associations among rhizobial chromosomal background, nod genes, and host plants based on the analysis of symbiosis of indigenous rhizobia and wild legumes native to Xinjiang.Microbial ecology · 2010Article
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Authors and funding
5 authors at 3 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
A total of 103 root nodule isolates were used to estimate the diversity of bacteria nodulating Lotus tenuis in typical soils of the Salado River Basin. A high level of genetic diversity was revealed by repetitive extragenic palindromic PCR, and 77 isolates with unique genomic fingerprints were further differentiated into two clusters, clusters A and B, after 16S rRNA restriction fragment length polymorphism analysis. Cluster A strains appeared to be related to the genus Mesorhizobium, whereas cluster B was related to the genus Rhizobium. 16S rRNA sequence and phylogenetic analysis further supported the distribution of most of the symbiotic isolates in either Rhizobium or Mesorhizobium: the only exception was isolate BA135, whose 16S rRNA gene was closely related to the 16S rRNA gene of the genus Aminobacter. Most Mesorhizobium-like isolates were closely related to Mesorhizobium amorphae, Mesorhizobium mediterraneum, Mesorhizobium tianshanense, or the broad-host-range strain NZP2037, but surprisingly few isolates grouped with Mesorhizobium loti type strain NZP2213. Rhizobium-like strains were related to Rhizobium gallicum, Rhizobium etli, or Rhizobium tropici, for which Phaseolus vulgaris is a common host. However, no nodC or nifH genes could be amplified from the L. tenuis isolates, suggesting that they have rather divergent symbiosis genes. In contrast, nodC genes from the Mesorhizobium and Aminobacter strains were closely related to nodC genes from narrow-host-range M. loti strains. Likewise, nifH gene sequences were very highly conserved among the Argentinian isolates and reference Lotus rhizobia. The high levels of conservation of the nodC and nifH genes suggest that there was a common origin of the symbiosis genes in narrow-host-range Lotus symbionts, supporting the hypothesis that both intrageneric horizontal gene transfer and intergeneric horizontal gene transfer are important mechanisms for the spread of symbiotic capacity in the Salado River Basin.
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