【摘要】 对从新疆、青海采集的盐碱土样中分离获得的 2 9株嗜碱放线菌 (alkaliphilicactino mycetes)及 1株模式菌株Nocardiopsisprasina的pH实验 ,不同碱性物质KOH、K2 CO3、NaOH、Na2 CO3对生长的影响 ,及对NaCl、KCl耐受性进行了研究。结果发现 ,少数嗜碱放线菌对Na+ 有一定的依赖性 ,对K+ 碱性物质敏感 ;一些嗜碱放线菌对CO32 敏感 ,NaCl、KCl对一些嗜碱放线菌的生长有抑制作用 ;4种碱性物质对Nocardiopsis菌株生长无影响 ,且它们可耐受高浓度NaCl、KCl。因此提出高碱性环境中是否存在K+ 、CO32 专一性依赖的嗜碱放线菌的推测。更多还原

【Abstract】 pH, affects of different alkaline materials KOH, K 2CO 3, NaOH, Na 2CO 3 on the growth, and NaCl, KCl tolerance of 29 isolates from the saline and alkaline soils in Xinjiang and Qinghai Provinces of China and 1 type strain were studied. Results showed that only a few alkaliphilic actinomycetes were Na +-obligately dependent, and K +-sensitive. Some alkaliphilic actinomycetes were CO 3 2- -sensitive, and NaCl, KCl could inhibit their growth. 4 kinds of alkaline materials had no affect on growth of alkaliphilic Nocardiopsis, and these strains showed high tolerance to NaCl, KCl. So it was presumed that only K + and CO 3 2- obligately dependent alkaliphilic Actinomycetes maybe exist in alkaline environments.更多还原