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南冲绳海槽深海沉积物中度嗜盐菌系统进化及多样性分析
Physiochemical and phylogenetic analysis of moderately halophilic bacteria halomonadaceae in deep-sea sediments of the Southern Okinawa Trough
【摘要】 从南冲绳海槽MD05-2907站位的深海沉积物中分离到40株属于盐单胞菌科(Halomonadaceae)的中度嗜盐菌。耐盐度实验表明有12株最适生长盐度为30,19株为60,9株为100,多数菌在盐度高于150时生长速度迅速下降。有8株菌能产至少一种胞外蛋白酶。
【Abstract】 Forty strains of moderately halophilic Halomonadaceae bacteria were isolated from deep-sea sediments of the Southern Okinawa Trough station MD05-2907.An experiment of salt tolerance showed that 12 isolates grew optimally at salinity 30,19 isolates at 60,and 9 isolates at 100.Growth rates of most isolates declined rapidly when the salinity was over 150.Extracellular hydrolytic enzyme screening showed that 8 isolates of Halomonadaceae were able to produce proteases.
【关键词】 南冲绳海槽;
中度嗜盐菌;
盐单胞菌科(Halomonadaceae);
胞外蛋白酶;
【Key words】 Southern Okinawa Trough; moderately halophilic bacteria; halomonadaceae; extracellular protease;
【Key words】 Southern Okinawa Trough; moderately halophilic bacteria; halomonadaceae; extracellular protease;
【基金】 中国科学院知识创新重要方向项目(KZCX2-YW-211-03,KZCX3-SW-233);国家自然科学基金资助项目(40476058,40576069);中国大洋协会国际海底区域研究开发“十一五”项目(受理号:020和126)
- 【文献出处】 海洋科学 ,Marine Sciences , 编辑部邮箱 ,2009年05期
- 【分类号】Q936
- 【被引频次】6
- 【下载频次】219