Vesicle-like virion of Haloarcula hispanica pleomorphic virus 3 preserves high infectivity in saturated salt

Forskningsoutput: TidskriftsbidragArtikelVetenskapligPeer review


Hypersaline environments that are subject to salinity changes are particularly rich in viruses. Here we report a newly isolated archaeal halovirus, Haloarcula hispanica pleomorphic virus 3 (HHPV3). Its reproduction significantly retards host growth and decreases cell viability without causing lysis. HHPV3 particles require a minimum of 3 M NaCI for stability and maintain high infectivity even in saturated salt. Notably, virions are irreversibly inactivated at similar to 1.5 M NaCl in neutral pH, but tolerate this salinity at alkaline pH. The HHPV3 virion is a pleomorphic membrane vesicle containing two major protein species and lipids acquired nonselectively from the host membrane. The circular double-stranded DNA genome contains a conserved gene block characteristic of pleolipoviruses. We propose that HHPV3 is a member of the Betapleolipovirus genus (family Pleolipoviridae). Our findings add insights into the diversity observed among the pleolipoviruses found in hypersaline environments
Sidor (från-till)40-51
Antal sidor12
StatusPublicerad - 2016
MoE-publikationstypA1 Tidskriftsartikel-refererad


  • 1183 Växtbiologi, mikrobiologi, virologi

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