文献类型：期刊文献

英文题名：Dominant genera of cyanobacteria in Lake Taihu and their relationships with environmental factors

作者：Feng, Lijun[1];Liu, Shiyou[1];Wu, Wenxian[1];Ma, Jiawen[1];Li, Pei[1];Xu, Hailing[1];Li, Na[1];Feng, Yaoyu[1]

机构：[1]E China Univ Sci & Technol, Sch Resource & Environm Engn, Shanghai 200237, Peoples R China

年份：2016

卷号：54

期号：7

起止页码：468

外文期刊名：JOURNAL OF MICROBIOLOGY

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000378974100002)】；

基金：This work was supported by the Water Special Project (2014ZX07104006) and Fundamental Research Funds for the Central Universities, China.

语种：英文

外文关键词：cyanobacterial bloom; Lake Taihu; cyanobacterial community structure; Microcystis; Synechococcus

摘要：Cyanobacterial blooms in freshwaters have become one of the most widespread of environmental problems and threaten water resources worldwide. Previous studies on cyanobacteria in Lake Taihu often collected samples from one site (like Meiliang Bay or Zhushan Bay) and focused on the variation in patterns or abundance of Microcystis during the blooming season. However, the distribution of cyanobacteria in Lake Taihu shows differing pattern in various seasons. In this study, water samples were collected monthly for one year at five sites in Lake Taihu with different trophic status and a physicochemical analysis and denaturing gradient gel electrophoresis (DGGE) were conducted. DGGE fingerprint analysis showed that Microcystis (7/35 bands) and Synechococcus (12/35 bands) were the two most dominant genera present during the study period at all five sites. Cyanobium (3/35 bands) was the third most common genus which has seldom been previously reported in Lake Taihu. Redundancy analysis (RDA) indicated that the cyanobacterial community structure was significantly correlated with NO3--N, CODMn, and NH4+-N in the winter and spring, whereas it was correlated with water temperature in the summer and autumn. Limiting the nutrient input (especially of N and C loading) in Lake Taihu would be a key factor in controlling the growth of different genera of cyanobacteria.