Antarctic archaea-virus interactions: metaproteome-led analysis of invasion, evasion and adaptation.

ABSTRACT: Despite knowledge that viruses are abundant in natural ecosystems, there is limited understanding of which viruses infect which hosts, and how both hosts and viruses respond to those interactions-interactions that ultimately shape community structure and dynamics. In Deep Lake, Antarctica, intergenera gene exchange occurs rampantly within the low complexity, haloarchaea-dominated community, strongly balanced by distinctions in niche adaptation which maintain sympatric speciation. By performing metaproteomics for the first time on haloarchaea, genomic variation of S-layer, archaella and other cell surface proteins was linked to mechanisms of infection evasion. CRISPR defense systems were found to be active, with haloarchaea responding to at least eight distinct types of viruses, including t

SUBMITTER: Tschitschko B 

PROVIDER: S-EPMC4542027 | biostudies-literature | 2015 Sep

REPOSITORIES: biostudies-literature