嗜盐嗜碱杆菌属的一个新种  

NEW SPECIES OF NATRONOBACTERIUM

作　　者：田新玉[1] 徐毅[1] 刘洪灿[1] 周培瑾[1] 

机构地区：[1]中国科学院微生物研究所,北京100080

出　　处：《微生物学报》1997年第1期1-6,共6页Acta Microbiologica Sinica

基　　金：国家自然科学基金资助项目。

摘　　要：从内蒙古自治区哈马台碱湖分离到一株多形态嗜盐嗜碱菌(编号HAM—2),其生长的NaCI浓度范围为12％～30％,最适17.5％;生长的pH范围为7.8～10.4,最适pH9.0～9.5。革兰氏染色阴性。细胞为不规则杆状、椭圆形、三角形等多形态,细胞大小为1.0～2.0×2.0～5.Oμm。该菌株主要极性脂是磷脂酰甘油磷酯(PGP)和磷脂酰甘油(PG),还含有一种未知的次要磷脂成分(PL4)。DNA中G+C含量为59.5mol％。根据这些特征,菌株可归入嗜盐嗜碱杆菌属,又根据细胞形态和极性脂组份不同于该属正式承认的三个种,因此,鉴定此菌株为嗜盐嗜碱杆菌属(Natronobacterium)的—个新种,定名为内蒙古嗜盐嗜碱菌(Natronobacterium innermongoliae Sp.nov.)。An extreme haloalkalophilic bacterium HAM-2 with pleomorphic rods was isolated from Hamatai soda lake in Inner Mongolia Autonomous Region. Growth occurs in 12% -30% NaCl, no growth below 12%, optimum 17.5%. pH range for good growth 7.8 - 10.4, optimum 9.0 - 9.5. The strain HAM-2 is non-motile, Gram-negative, pleomorphic, cell of which were 1.0 - 2.0 by 2.0-5.0μm in size in liquid medium. The major polar lipids of the organisms are phosphatidylglycerol phosphate and phosphatidyglycerol and contains an unidentified phospholipid as a minor component PL4. G + C contant of DNA is 59.5mol%. Based on the characteristics, the strain HAM-2 could be included in the genus Natronobacterium, but since HAM-2 differs from reported four species of this genus in cell shape, polar lipids and biochemical features. The name Natronobacterium innemongoliae sp. nov. is proposed. The type strain is designated HAM-2.

关 键 词：嗜盐嗜碱菌 嗜盐嗜碱杆菌属 新种 

分 类 号：Q939.109[生物学—微生物学]