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Title of Journal: Arch Microbiol

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Abbravation: Archives of Microbiology

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Springer-Verlag

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DOI

10.1007/s11947-012-0895-5

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1432-072X

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The analysis of core and symbiotic genes of rhizob

Authors: Estela R ÁlvarezMartínez Ángel Valverde Martha Helena RamírezBahena Paula GarcíaFraile Carmen Tejedor Pedro F Mateos Nery Santillana Doris Zúñiga Alvaro Peix Encarna Velázquez
Publish Date: 2009/07/15
Volume: 191, Issue: 8, Pages: 659-668
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Abstract

In this work we analysed the core and symbiotic genes of rhizobial strains isolated from Vicia sativa in three soils from the Northwest of Spain and compared them with other Vicia endosymbionts isolated in other geographical locations The analysis of rrs recA and atpD genes and 16S–23S rRNA intergenic spacer showed that the Spanish strains nodulating V sativa are phylogenetically close to those isolated from V sativa and V faba in different European American and Asian countries forming a group related to Rhizobium leguminosarum The analysis of the nodC gene of strains nodulating V sativa and V faba in different continents showed they belong to a phylogenetically compact group indicating that these legumes are restrictive hosts The results of the nodC gene analysis allow the delineation of the biovar viciae showing a common phylogenetic origin of V sativa and V faba endosymbionts in several continents Since these two legume species are indigenous from Europe our results suggest a world distribution of strains from R leguminosarum together with the V sativa and V faba seeds and a close coevolution among chromosome symbiotic genes and legume host in this Rhizobium–Vicia symbiosis


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