新疆达坂城盐湖中度嗜盐微生物的筛选分离与其抑菌性、生长特性初步研究

极端微生物作为非常宝贵的微生物资源,具有广阔的研究和应用前景。为获得中度嗜盐微生物,采用渗透压选择性培养基,从采自新疆达坂城盐湖及附近的20份水土样本中获得6株中度嗜盐菌,其中包括2株细菌、1株放线菌和3株霉菌。其中两株嗜盐菌对包括大肠杆菌在内的三种指示菌有不同程度的抑制作用。对有抑菌能力的两株中度嗜盐微生物进行生长特性的初步研究,发现其最适生长盐度为10%(以NaCl计),当盐度超过15%时则不生长;在pH6~9,温度25~37℃条件下均长势良好。

The extreme microorganism,as a precious microbial resource,can be used in many aspects.6 strains were isolated from 20 water and soil samples taken from Dabancheng Saline Lake using the high salty medium to acquisition the moderately halophilic bacteria,including 2 bacteria,1 actinomyces and 3 fungus.Among which,2 strains showed different activity of anti-microorganism on three selective indicator microorganism including E.coli.The research of growth characteristics showed that the optimal concentration of salt was 10%,and the moderately halophile microorganisms could not survive when the concentration of salt surpassed 15%.These two strains grew well when the pH value range from 6 to 9,and the temperature range from 25 to 37.