生物转化
无氧运动
生物降解
微囊藻毒素
降级(电信)
环境化学
化学
富营养化
微囊藻毒素
微生物种群生物学
富集培养
微生物
细菌
生物
生物化学
蓝藻
有机化学
生理学
酶
营养物
电信
遗传学
计算机科学
作者
Fanping Zhu,Zhenlian Han,Jian-Lu Duan,Xiaoshuang Shi,Tingting Wang,Guo‐Ping Sheng,Shuguang Wang,Xian-Zheng Yuan
标识
DOI:10.1016/j.envpol.2019.02.013
摘要
Microcystin (MC) elimination is a global challenge that is necessary for the health of humans and ecosystems. Biodegradation of MC, one of the most environmental-friendly methods, had previously been focused on the aerobic condition. In this study, two enrichment cultures from Taihu sediments possessed high capacity for MC-leucine arginine (MC-LR) anaerobic biodegradation. Meanwhile, it was firstly found that MC-LR underwent similar degradation process under anaerobic conditions to that in aerobic condition. Furthermore, a novel degradation pathway, hydrolyzing of Ala-Mdha to form a new linear MC-LR intermediate, was proposed under anaerobic conditions. Combining MC-LR degradation with microbial community analysis, this study deduced that Candidatus Cloacamonas acidaminovorans str. Evry may play an important role in the degradation of MC-LR. These findings suggest an additional pathway involved in the environmental cycle of MC-LR, which implies that the biotransformation of MC-LR might play an important role in eliminating MC-LR in eutrophic lake sediments under anaerobic conditions.
科研通智能强力驱动
Strongly Powered by AbleSci AI