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.

Danovaro, R., Corinaldesi, C., Dell'Anno, A., Fabiano, M., Corselli, C. (2005). Viruses, prokaryotes and DNA in the sediments of a deep-hypersaline anoxic basin (DHAB) of the Mediterranean Sea. ENVIRONMENTAL MICROBIOLOGY, 7(4), 586-592 [10.1111/j.1462-2920.2005.00727.x].

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

CORSELLI, CESARE
2005

Abstract

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.
Articolo in rivista - Articolo scientifico
Marine-Sediments; Organic-Matter; Bacterial Production; Estuarine Sediment; Aquatic Sediments; Chesapeake Bay; Cariaco Basin; Abundance; Coastal; Particles
English
2005
7
4
586
592
none
Danovaro, R., Corinaldesi, C., Dell'Anno, A., Fabiano, M., Corselli, C. (2005). Viruses, prokaryotes and DNA in the sediments of a deep-hypersaline anoxic basin (DHAB) of the Mediterranean Sea. ENVIRONMENTAL MICROBIOLOGY, 7(4), 586-592 [10.1111/j.1462-2920.2005.00727.x].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/3788
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