NDLI: Symbiotic and Genetic Diversity of Rhizobium galegae Isolates Collected from the Galega orientalis Gene Center in the Caucasus

Content Provider	PubMed Central
Author	Andronov, E. E. Terefework, Z. Roumiantseva, M. L. Dzyubenko, N. I. Onichtchouk, O. P. Kurchak, O. N. Dresler-nurmi, A. Young, J. P. W. Simarov, B. V. Lindström, K.
Copyright Year	2003
Abstract	This paper explores the relationship between the genetic diversity of rhizobia and the morphological diversity of their plant hosts. Rhizobium galegae strains were isolated from nodules of wild Galega orientalis and Galega officinalis in the Caucasus, the center of origin for G. orientalis. All 101 isolates were characterized by genomic amplified fragment length polymorphism fingerprinting and by PCR-restriction fragment length polymorphism (RFLP) of the rRNA intergenic spacer and of five parts of the symbiotic region adjacent to nod box sequences. By all criteria, the R. galegae bv. officinalis and R. galegae bv. orientalis strains form distinct clusters. The nod box regions are highly conserved among strains belonging to each of the two biovars but differ structurally to various degrees between the biovars. The findings suggest varying evolutionary pressures in different parts of the symbiotic genome of closely related R. galegae biovars. Sixteen R. galegae bv. orientalis strains harbored copies of the same insertion sequence element; all were isolated from a particular site and belonged to a limited range of chromosomal genotypes. In all analyses, the Caucasian R. galegae bv. orientalis strains were more diverse than R. galegae bv. officinalis strains, in accordance with the gene center theory.
Related Links	http://dx.doi.org/10.1128/AEM.69.2.1067-1074.2003
Starting Page	1067
File Format	PDF
ISSN	10985336
e-ISSN	10985336
Journal	Applied and Environmental Microbiology
Issue Number	2
Volume Number	69
Language	English
Publisher	American Society for Microbiology
Publisher Date	2003-02-01
Access Restriction	Open
Rights Holder	American Society for Microbiology
Subject Keyword	Research in Higher Education
Content Type	Text
Resource Type	Article
Subject	Ecology Food Science Applied Microbiology and Biotechnology Biotechnology

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Data from: Galega orientalis is more diverse than Galega officinalis in Caucasus – whole-genome AFLP analysis and phylogenetics of symbiosis-related genes (Dataset)

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Symbiotic and Genetic Diversity of Rhizobium galegae Isolates Collected from the Galega orientalis Gene Center in the Caucasus

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