Novel putative rhizobial species with different symbiovars nodulate Lotus creticus and their differential preference to distinctive soil properties.

Autor:	Rejili M; Research Laboratory Biodiversity & Valorization of Arid Areas Bioressources (BVBAA) - Faculty of Sciences of Gabes, Erriadh-Zrig, 6072-Tunisia., BenAbderrahim MA; Laboratoire d'Aridocultures et des Cultures Oasiennes, Institut des Régions Arides, 6051 Gabès, Tunisia., Mars M; Research Laboratory Biodiversity & Valorization of Arid Areas Bioressources (BVBAA) - Faculty of Sciences of Gabes, Erriadh-Zrig, 6072-Tunisia., Sherrier JD; Department of Crop & Soil Sciences, University of Georgia, 3111 Miller Plant Sci, 120 Carlton St., Athens, GA 30602, USA.
Jazyk:	angličtina
Zdroj:	FEMS microbiology letters [FEMS Microbiol Lett] 2020 Jun 01; Vol. 367 (11).
DOI:	10.1093/femsle/fnaa084
Abstrakt:	Phylogenetically diverse rhizobial strains endemic to Tunisia were isolated from symbiotic nodules of Lotus creticus, growing in different arid extremophile geographical regions of Tunisia, and speciated using multiloci-phylogenetic analysis as Neorhizobium huautlense (LCK33, LCK35, LCO42 and LCO49), Ensifer numidicus (LCD22, LCD25, LCK22 and LCK25), Ensifer meliloti (LCK8, LCK9 and LCK12) and Mesorhizobium camelthorni (LCD11, LCD13, LCD31 and LCD33). In addition, phylogenetic analyses revealed eight additional strains with previously undescribed chromosomal lineages within the genera Ensifer (LCF5, LCF6 and LCF8),Rhizobium (LCF11, LCF12 and LCF14) and Mesorhizobium (LCF16 and LCF19). Analysis using the nodC gene identified five symbiovar groups, four of which were already known. The remaining group composed of two strains (LCD11 and LCD33) represented a new symbiovar of Mesorhizobium camelthorni, which we propose designating as sv. hedysari. Interestingly, we report that soil properties drive and structure the symbiosis of L. creticus and its rhizobia. (© FEMS 2020.)
Databáze:	MEDLINE
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