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Brief Communications
Nature 436, 1101-1102 (25 August 2005) | doi:10.1038/4361101a; Published online 24 August 2005
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Virology: Independent virus development outside a host
Monika Häring1,2, Gisle Vestergaard3, Reinhard Rachel2, Lanming Chen3, Roger A. Garrett3 & David Prangishvili1,2
Abstract
Growing two long filamentous tails may help an archaeal virus to survive in a hostile environment.
Abstract
Viruses are thought to be functionally inactive once they are outside and independent of their host cell1. Here we describe an exceptional property of a newly discovered virus that infects a hyperthermophilic archaeon growing in acidic hot springs: the lemon-shaped viral particle develops a very long tail at each of its pointed ends after being released from its host cell. The process occurs only at the temperature of the host's habitat (75–90 °C) and it does not require the presence of the host cell, an exogenous energy source or any cofactors. This host-independent morphological development may be a strategy for viral survival in an environment that is unusually harsh and has limited host availability.
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