Comparative genomic analysis reveals the environmental impacts on two Arcticibacter strains including sixteen Sphingobacteriaceae species

Scientific Reports
Liang ShenFei Liu

Abstract

How the genomic diversity of species is driven by geographical isolation and environmental factors are not well understood for cold environments. Here, the environmental stress responses of two phylogenetically close Arcticibacter strains, A. eurypsychrophilus MJ9-5 and A. svalbardensis MN12-7, isolated from a Tibetan Plateau glacier and Svalbard soil, were analyzed. The comparative genomic analysis was performed with sixteen other related Sphingobacteriaceae species. Analyses of the relationships between growth temperature and genome composition, cold and heat shock genes showed that genomic adaption characteristics were more obvious when the strains were grouped by their upper limit in growth temperature, rather than by their minimal or optimal growth temperatures for Sphingobacteriaceae species. The very divergent genetic distance of genome fractions assigned to the functions of 'secondary metabolism', 'dormancy and sporulation' and 'metabolism of aromatic compounds' indicated the heterogeneous evolution of genes under different environmental pressures of the Sphingobacteriaceae species. The greatest differences between strains MJ9-5 and MN12-7 occurred in the genes devoted to the CRISPRs, osmotic adaption and metabolism of ...Continue Reading

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Citations

Sep 14, 2019·Microbiology Resource Announcements·Lakshmi ChandrasekaranStephan C Schuster
Oct 5, 2019·Microbiology Resource Announcements·Elaine L OliveiraStephan C Schuster
Oct 6, 2020·Frontiers in Microbiology·Kurt M YakimovichLynne M Quarmby
Aug 17, 2019·Microbiology Resource Announcements·Rikky W PurbojatiStephan C Schuster

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Datasets Mentioned

BETA
MDFN00000000

Methods Mentioned

BETA
transmission electron microscopy

Software Mentioned

BLAST
MEGA
finder
matrix
ClustalW
PERL
aminoacidUsage
RNAmmer
SOAPdenovo
CodonAaUsage

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