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FEMS Microbiol Ecol ; 100(5)2024 Apr 10.
Artigo em Inglês | MEDLINE | ID: mdl-38587812

RESUMO

Lentil is one of the most important legumes cultivated in various provinces of Iran. However, there is limited information about the symbiotic rhizobia of lentils in this country. In this study, molecular identification of lentil-nodulating rhizobia was performed based on 16S-23S rRNA intergenic spacer (IGS) and recA, atpD, glnII, and nodC gene sequencing. Using PCR-RFLP analysis of 16S-23S rRNA IGS, a total of 116 rhizobia isolates were classified into 20 groups, leaving seven strains unclustered. Phylogenetic analysis of representative isolates revealed that the rhizobia strains belonged to Rhizobium leguminosarum and Rhizobium laguerreae, and the distribution of the species is partially related to geographical location. Rhizobium leguminosarum was the dominant species in North Khorasan and Zanjan, while R. laguerreae prevailed in Ardabil and East Azerbaijan. The distribution of the species was also influenced by agroecological climates; R. leguminosarum thrived in cold semiarid climates, whereas R. laguerreae adapted to humid continental climates. Both species exhibited equal dominance in the Mediterranean climate, characterized by warm, dry summers and mild, wet winters, in Lorestan and Kohgiluyeh-Boyer Ahmad provinces.


Assuntos
DNA Bacteriano , Lens (Planta) , Filogenia , Rhizobium , Lens (Planta)/microbiologia , Irã (Geográfico) , Rhizobium/genética , Rhizobium/classificação , Rhizobium/isolamento & purificação , DNA Bacteriano/genética , RNA Ribossômico 16S/genética , Clima , DNA Espaçador Ribossômico/genética , Polimorfismo de Fragmento de Restrição , Análise de Sequência de DNA , RNA Ribossômico 23S/genética , Rhizobium leguminosarum/genética , Rhizobium leguminosarum/classificação , Rhizobium leguminosarum/isolamento & purificação , Simbiose , Proteínas de Bactérias/genética , Reação em Cadeia da Polimerase
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