深海细菌及其适压机制

The Deep-sea Bacteria and Their Pressure Adaptation Mechanisms

深海是以高压为主要特征的极端环境。在深海中适压生活的细菌在分类上多属于蛋白细菌(Pro-teobacteria)类群的γ分支。深海细菌对高压的适应可表现为嗜压或耐压,其适压的机制包括细胞膜脂成分中不饱和脂肪酸的增加,此外,细菌细胞的呼吸链系统也与耐压有关。

The deep-sea is an extreme environment with high pressure. The bacterial isolates from the deep-sea, usually belonged to the Proteobacteria γ-subgroup, are piezophilic or piezotolerant. The mechanism of piezophily at least includs the grovnh of unsaturated fatty acids in membrane,besides,is related to the respiratory chain.