Viruses, prokaryotes and DNA in the sediments of a deep-hypersaline anoxic basin (DHAB) of the Mediterranean Sea
Viruses, prokaryotes and DNA in the sediments of a deep-hypersaline anoxic basin (DHAB) of the Mediterranean Sea
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DOI：
10.1111/j.1462-2920.2005.00727.x
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发表时间：
2005-04-01
影响因子：
5.1
通讯作者：
Corselli, C
中科院分区：
文献类型：
--
作者：
Danovaro, R;Corinaldesi, C;Corselli, C
在东地中海的一个深高盐缺氧盆地(DHAB Atalante盆地，水深约3000米)，对病毒和原核生物的丰度进行了调查。该系统与附近两个以含氧条件为特征的深海地点进行了比较。在高盐度缺氧沉积物中的病毒丰度和病毒与原核生物丰度比显示出接近于在氧化地点报告的数值。对阿塔兰特盆地病毒丰度垂直剖面的分析表明，随着沉积物深度的增加，病毒丰度没有显著变化，这表明在这些缺氧和高盐度条件下的海底病毒是保存下来的或耐腐烂的。缺氧池还显示出非常高浓度的不稳定有机成分(蛋白质和脂类)和胞外DNA。这些发现表明，DHAB沉积物是长期保存底栖病毒和核酸的储存库。
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.