Transcriptional responses of Candidatus Accumulibacter clades to environmental dynamics in enhanced biological phosphorus removal

被引：13
作者：
Fan, Zhiwei [1 ]
Zeng, Wei [1 ]
Wang, Baogui [1 ]
Guo, Yu [1 ]
Meng, Qingan [1 ]
Peng, Yongzhen [1 ]
机构：
[1] Beijing Univ Technol, Dept Environm Engn, Natl Engn Lab Adv Municipal Wastewater Treatment, Beijing 100124, Peoples R China
来源：
BIORESOURCE TECHNOLOGY | 2020年 / 306卷
关键词：
Transcriptional response; Environmental dynamics; Transcriptional activity; Candidatus Accumulibacter clades; Enhanced biological phosphorus removal; POLYPHOSPHATE-ACCUMULATING ORGANISMS; ADVANCED NUTRIENT REMOVAL; ACTIVATED-SLUDGE; WASTE-WATER; COMMUNITY STRUCTURES; PHOSPHATE REMOVAL; DENITRIFICATION; WASTEWATERS; BACTERIA; NITRITE;
D O I：
10.1016/j.biortech.2020.123108
中图分类号：
S2 [农业工程];
学科分类号：
0828 ;
摘要：
The dynamic response mechanism of Candidatus Accumulibacter clades to environmental factors in enhanced biological phosphorus removal (EBPR) was unclear. This study investigated the relationship between the transcriptional responses of Candidatus Accumulibacter clades and environmental dynamics. Results suggested that Candidatus Accumulibacter clade IIA only responded in initial 20 and 30 min of P-release and P-uptake stage, respectively, and was also the first clade to stop responding among the six Candidatus Accumulibacter clades. Clade IIC and IID responded at rising stage of P-release and P-uptake rate. Clade IA and IIB responded at decreasing stage of P-release and P-uptake rate. The transcriptional response duration of clade IIF was the longest, which constantly responded throughout anaerobic, anoxic and oxic phase. The transcriptional responses of Candidatus Accumulibacter clades to environmental dynamics revealed the microorganisms actually working in P-release and P-uptake, and gave a new insight into the transcriptional responses related to the EBPR performance.
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页数：8
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