Search for Ancestral Features in Genomes of Rhizobium leguminosarum bv. viciae Strains Isolated from the Relict Legume Vavilovia formosa

is a relict leguminous plant growing in hard-to-reach habitats in the rocky highlands of the Caucasus and Middle East, and it is considered as the putative closest living relative of the last common ancestor (LCA) of the Fabeae tribe. Symbionts of belonging to bv. compose a discrete group that diffe...

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Bibliographic Details
Published in:Genes 2019-12, Vol.10 (12), p.990
Main Authors: Chirak, Elizaveta R, Kimeklis, Anastasiia K, Karasev, Evgenii S, Kopat, Vladimir V, Safronova, Vera I, Belimov, Andrey A, Aksenova, Tatiana S, Kabilov, Marsel R, Provorov, Nikolay A, Andronov, Evgeny E
Format: Article
Language:English
Subjects:
Bacteria
Bacterial Proteins - genetics
Chromosomes
DNA, Bacterial - genetics
Evolution
Evolution, Molecular
Fabaceae - microbiology
Fabeae
Genes
Genes, Bacterial
Genomes
Genomics
Legumes
Macroevolution
Maximum likelihood method
Operons
Photosynthesis
Plasmids
Rhizobium leguminosarum
Rhizobium leguminosarum - genetics
Rhizobium leguminosarum - isolation & purification
Species Specificity
Symbionts
Symbiosis - genetics
Vavilovia formosa
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Summary:is a relict leguminous plant growing in hard-to-reach habitats in the rocky highlands of the Caucasus and Middle East, and it is considered as the putative closest living relative of the last common ancestor (LCA) of the Fabeae tribe. Symbionts of belonging to bv. compose a discrete group that differs from the other strains, especially in the nucleotide sequences of the symbiotically specialised ( ) genes. Comparison of the genomes of strains with the reference group composed of bv. strains isolated from and demonstrated that the vavilovia strains have a set of genomic features, probably indicating the important stages of microevolution of the symbiotic system. Specifically, symbionts of (considered as an ancestral group) demonstrated a scattered arrangement of genes (>90 kb cluster on p ), with the location of T gene outside of the other operons, the presence of X and W, and the absence of chromosomal NOPQ copies. In contrast, the reference (derived) group harboured genes as a compact cluster (
ISSN:2073-4425
2073-4425
DOI:10.3390/genes10120990