【摘要】 目的探讨具有还原亚硒酸盐能力的菌株在硒的生物地球化学转化过程中的作用。方法在湖北省恩施市双河乡渔塘坝采集富硒碳质泥岩样品,通过富基、分离和纯化培养,选择具有还原亚硒酸盐能力的菌株进行细菌鉴定和转硒效率的检测。结果从富硒碳质泥岩中筛选出2株具有还原亚硒酸盐能力的优势细菌,均鉴定为棒状杆菌属,亚硒酸钠转化率分别为3.9%,96.8%。结论棒状菌属在渔塘坝环境单质硒富集和硒的生物地球化学转化过程中起着重要的作用。更多还原

【Abstract】 Objective To screen out and isolate the strains that can reduce selenite in the high-Se environment of Yutangba. Methods The strains with the ability to reduce selenite were screened out by enrichment, isolation and purification culture. The strains were identified, the efficiency of transferring Se of the strains was measured. Results Two strains with the ability to reduce selenite were screened out from the soil and were preliminarily identified as Corynebacterium spp. The efficiency of transferring Se of one strain is 96.8%. Conclusion Corynebacterium spp. play an important role in the enrichment of Se and the process of Se biogeochemistry transformation in the environment of Yutangba.更多还原