摘要
菌株A1 (Arthrobactersp .A1 )分离自降解含盐 (NaCl浓度为 0 .77molL- 1)苯乙酸生产污水的活性污泥。该菌株能在NaCl浓度为 0 .1molL- 1～ 2 .0molL- 1,以苯乙酸为惟一碳源的基础培养基中生长。在不同的NaCl浓度下 ,菌株A1细胞内的QAC(Quaternaryammoniumcompounds)、游离谷氨酸和K+含量与盐浓度的升高成正相关。在盐激条件下 ,菌株A1细胞内的QAC、游离谷氨酸和K+含量急剧增加 ,当外界的盐浓度突然从 0 .1molL- 1增加到 1 .0molL- 1时 ,其细胞内的QAC和游离谷氨酸含量在 40分钟内分别增加了 4.9倍和 2 .1倍。
Summary A bacterial strain A1 was isolated from activated sludge that treat with hapersaline waste water and identified as Arthrobacter sp. this strain was capable of growing on MM with the NaCl contents 0.1 mol L -1 ～2.0 mol L -1 and phenyl acetic acid as the sole source of carbon and energy. The osmoregulation mechanism of this strain was studied, it was found that the intracellular accumulation of K +; free amino acid; QAC increased with the increasing of salinity. The intracellular amino acid and QAC contents increased immediately when salt was added suddenly to culture to a final content of 1.0 mol L -1 . The contents of amino acid and QAC increased by 2.1 times and 4.9 times respectively in 40 minutes.
出处
《土壤学报》
CAS
CSCD
北大核心
2003年第2期301-305,共5页
Acta Pedologica Sinica
基金
国家高技术研究计划 863资助项目 (项目编号 :2 0 0 1 .AA2 1 41 2 1 )
江苏省环境保护厅资助项目 (苏环科项目文号 :2 0 0 0 .2 1文 )
