The genomes of three Bradyrhizobium sp. isolated from root nodules of Lupinus albescens grown in extremely poor soils display important genes for resistance to environmental stress

Genetics and Molecular Biology
Camille E GranadaLuciane Maria Pereira Passaglia

Abstract

Lupinus albescens is a resistant cover plant that establishes symbiotic relationships with bacteria belonging to the Bradyrhizobium genus. This symbiosis helps the development of these plants in adverse environmental conditions, such as the ones found in arenized areas of Southern Brazil. This work studied three Bradyrhizobium sp. (AS23, NAS80 and NAS96) isolated from L. albescens plants that grow in extremely poor soils (arenized areas and adjacent grasslands). The genomes of these three strains were sequenced in the Ion Torrent platform using the IonXpress library preparation kit, and presented a total number of bases of 1,230,460,823 for AS23, 1,320,104,022 for NAS80, and 1,236,105,093 for NAS96. The genome comparison with closest strains Bradyrhizobium japonicum USDA6 and Bradyrhizobium diazoefficiens USDA110 showed important variable regions (with less than 80% of similarity). Genes encoding for factors for resistance/tolerance to heavy metal, flagellar motility, response to osmotic and oxidative stresses, heat shock proteins (present only in the three sequenced genomes) could be responsible for the ability of these microorganisms to survive in inhospitable environments. Knowledge about these genomes will provide a foundat...Continue Reading

References

Dec 12, 2003·Systematic and Applied Microbiology·Adriana Jarabo-LorenzoMilagros León-Barrios
Feb 12, 2008·BMC Genomics·Ramy K AzizOlga Zagnitko
Feb 21, 2013·Bioinformatics·Alexey GurevichGlenn Tesler
Dec 3, 2013·Nucleic Acids Research·Ross OverbeekRick Stevens

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Datasets Mentioned

BETA
PRJNA289134
PRJNA289210

Methods Mentioned

BETA
environmental stresses

Software Mentioned

QUAST
MIRA
IonXpress
RAST

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