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Sulfur oxidation genes in diverse deep-sea viruses
Anantharaman, K.; Duhaime, M.B.; Breier, J.A.; Wendt, K.A.; Toner, B.M.; Dick, G.J. (2014). Sulfur oxidation genes in diverse deep-sea viruses. Science (Wash.) 344(6185): 757-760. hdl.handle.net/10.1126/science.1252229
In: Science (Washington). American Association for the Advancement of Science: New York, N.Y. ISSN 0036-8075, more
Peer reviewed article  

Available in Authors 

Keyword
    Marine

Authors  Top 
  • Anantharaman, K.
  • Duhaime, M.B.
  • Breier, J.A.
  • Wendt, K.A.
  • Toner, B.M.
  • Dick, G.J.

Abstract
    Viruses are the most abundant biological entities in the oceans and a pervasive cause of mortality of microorganisms that drive biogeochemical cycles. Although the ecological and evolutionary effects of viruses on marine phototrophs are well recognized, little is known about their impact on ubiquitous marine lithotrophs. Here, we report 18 genome sequences of double-stranded DNA viruses that putatively infect widespread sulfur-oxidizing bacteria. Fifteen of these viral genomes contain auxiliary metabolic genes for the a and ? subunits of reverse dissimilatory sulfite reductase (rdsr). This enzyme oxidizes elemental sulfur, which is abundant in the hydrothermal plumes studied here. Our findings implicate viruses as a key agent in the sulfur cycle and as a reservoir of genetic diversity for bacterial enzymes that underpin chemosynthesis in the deep oceans.

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