新疆地区盐湖的中度嗜盐菌的数值分类

NUMERICAL TAXONOMY OF MODERATELY HALOPHILIC BACTERIA ISOLATED FROM SALT LAKES IN XINJIANG REGION

对来自新疆地区盐湖的 2 9株中度嗜盐菌与 9株相关的参比菌株进行了数值分类。这些菌株是革兰氏阴性菌 ,能在 0～ 2 5 %NaCl中生长。结果表明 ,所有菌株在 76 %的相似性水平上分为 2个表观群。群I为新分离的菌株共 2 5株 ,群II为 9株参比菌株和 4株新分离的菌株。在 86 %的相似性水平上 ,供试菌株分为 3个亚群。亚群 1由 1 0株新分离的菌株组成 ,亚群 2由 8株新分离的菌株组成 ,亚群 3由 1株新分离的菌株和 5株参比菌株组成。大部分新分离的菌株聚在独立的亚群中 ,说明分离自新疆地区盐湖的中度嗜盐菌是区别于参比菌株的新类群。

Twenty nine moderately halophilic bacteria isolated from salt lakes in Xinjiang Region were compared with nine reference strains of relative species by performing a numerical analysis of 112 phenotypic characteristics. All the new isolates are Gram negative and can grow on the media containing 0～25% NaCl. The results showed that all tested strains were clustered into 2 phena at 76 % similarity level. Phenon I was composed by 25 new isolates strains,and phenon II included 9 reference strains and 4 new lsolated strains. Most of the new isolated strains were clusted into 3 subphena at 86 % similarity level. There were 10 new isolated strains in subphenon 1, 8 new isolated strains in subphenon 2, and 1 new isolated strain and 5 reference strains were included in subphenon 3. The results indicated that there were great differences between the new isolates and the reference strains.