Phylogenetic analysis of symbiotic genes of nodule bacteria in plants of the genus Lathyrus (L.) (Fabaceae)

• Published in: Molecular genetics, microbiology and virology Vol. 26; no. 4; pp. 154 - 158
• Main Authors: Baymiev, An. Kh, Ivanova, E. S., Ptitsyn, K. G., Chubukova, O. V., Baymiev, Al. Kh
• Format: Journal Article
• Language: English
• Published: Heidelberg Allerton Press, Inc 01-12-2011
• Subjects: Agrobacterium; Biomedical and Life Sciences; Experimental Works; Fabaceae; Horizontal transfer; Lathyrus; Life Sciences; Microbiology; Molecular Medicine; NifH gene; Nodules; Phyllobacterium; Phylogeny; Pyruvic acid; Rhizobium leguminosarum; Rhizobium tropici; rRNA 16S; cross-inoculation groups; symbiotic genes; horizontal gene transfer; nodule bacteria
• ISSN: 0891-4168; 1934-841X
• DOI: 10.3103/S0891416811040021

We performed a comparative analysis of the symbiotic genes
nifH, nifD
, and
nodA
of microsymbionts of wild plants of the
Lathyrus
L. (Fabaceae) genus. According to 16S rRNA gene sequences, the microsymbionts belonged to
Rhizobium leguminosarum
bv.
viceae, Rhizobium tropici, Agrobacterium
sp., and
Phyllobacterium
sp. It was shown that all the studied genes from the analyzed strains were highly homologous to the similar genes of
R. leguminosarum
bv.
viceae
. We propose that these symbiotic genes were transferred into
R. tropici, Agrobacterium
sp., and
Phyllobacterium
sp. via horizontal transfer of genes from
R. leguminosarum
bv.
viceae
strains, which resulted in the appearance of recombinant strains able to form symbiotic relationships with plants of the
Lathyrus
L. genus. Such relationships previously seemed unlikely for these plants.