Viruses, prokaryotes and DNA in the sediments of a deep-hypersaline anoxic basin (DHAB) of the Mediterranean Sea

被引：51

作者：

Danovaro, R

Corinaldesi, C

Dell'Anno, A

Fabiano, M

Corselli, C

机构：

[1] Polytech Univ Marche, Dept Marine Sci, I-60131 Ancona, Italy

[2] Univ Genoa, Dept Studies Terr & Its Resources DIPTERIS, I-16100 Genoa, Italy

[3] Univ Milano Bicocca, Dept Marine Geol, I-20126 Milan, Italy

来源：

ENVIRONMENTAL MICROBIOLOGY | 2005年 / 7卷 / 04期

关键词：

D O I：

10.1111/j.1462-2920.2005.00727.x

中图分类号：

Q93 [微生物学];

学科分类号：

071005 ; 100705 ;

摘要：

Viral and prokaryote abundance were investigated in a deep-hypersaline anoxic basin of the Eastern Mediterranean Sea (DHAB Atalante basin at c. 3000 m depth). This system was compared with two nearby deep-sea sites characterized by oxic conditions. Viral abundance and virus to prokaryote abundance ratio in hypersaline anoxic sediments displayed values close to those reported in oxic sites. The analysis of vertical profiles of viral abundance in the Atalante basin revealed the lack of significant changes with depth in the sediment, suggesting that benthic viruses in these anoxic and hypersaline conditions are preserved or resistant to decay. The anoxic basin displayed also very high concentrations of labile organic components (proteins and lipids) and extracellular DNA. These findings suggest that the DHAB sediments represent a reservoir for long-term preservation of benthic viruses and nucleic acids.

引用

页码：586 / 592

页数：7

共 53 条

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