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Variation of Microcystis and microcystins coupling nitrogen and phosphorus nutrients in Lake Erhai, a drinking-water source in Southwest Plateau, China
Yu, Gongliang1,2; Jiang, Yongguang1,3; Song, Gaofei1,3; Tan, Wenhua1; Zhu, Mengling1; Li, Renhui1
2014-08-01
Source PublicationENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
ISSN0944-1344
Volume21Issue:16Pages:9887-9898
AbstractLake Erhai is the second largest lake of Southwest China and an important drinking water source. The lake is currently defined as the preliminary stage of eutrophic states, but facing a serious threat with transfer into intensive eutrophication. The present study examined the dynamics of Microcystis blooms and toxic Microcystis in Lake Erhai during 2010, based on quantitative real-time PCR method using 16S rRNA gene specific for Microcystis and microcystin systhesis gene (mcy), and chemical analysis on microcystin (MC) concentrations. Total Microcystis cell abundance at 16 sampling sites were shown as an average of 1.7 x 10(7) cells l(-1) (1.3 x 10(2)-3.8 x 10(9) cells l(-1)). Microcystin LR (MC-LR) and microcystin RR (MC-RR) were the main variants. The strong southwesterly winds, anticlockwise circular flows and geographical characteristics of lake and phytoplankton community succession impacted the distribution patterns of Chl a and MC in the lake. The concentration of Chl a and MC and abundances of total Microsytis and MC-producing Microsystis (MCM) were shown to be positively correlated with pH, DO and TP, negatively correlated with SD, NO3-N, TN/Chl a and TN/TP, and not correlated with NH4-N, TN, dissolved total nitrogen (DTN) and water temperatures. When TN/TP decrease, Microcystis tended to dominate and MC concentrations tended to increase, suggesting that the "TN/TP rule" can be partially applied to explain the correlation between the cyanobacterial blooms and nutrients N and P only within a certain nutrient level. It is speculated that N and P nutrients and the associated genes (e.g., mcy) may jointly drive MC concentration and toxigenicity of Microcystis in Lake Erhai.
SubtypeArticle
KeywordMicrocystin Microcystis Environmental Factor Nitrogen Phosphorus Mcy Gene Lake Erhai
DOI10.1007/s11356-014-2937-1
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
Indexed BySCI
Language英语
WOS Research AreaEnvironmental Sciences & Ecology
WOS SubjectEnvironmental Sciences
WOS IDWOS:000340613200043
WOS KeywordREAL-TIME PCR ; CYANOBACTERIUM MICROCYSTIS ; ENVIRONMENTAL-FACTORS ; FRESH-WATER ; AERUGINOSA ; PHYTOPLANKTON ; DYNAMICS ; COMMUNITY ; BLOOM ; POPULATION
Citation statistics
Cited Times:34[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ihb.ac.cn/handle/342005/20403
Collection藻类生物学及应用研究中心_期刊论文
Affiliation1.Chinese Acad Sci, Inst Hydrobiol, Key Lab Algal Biol, Wuhan 430072, Peoples R China
2.Univ Tsukuba, Grad Sch Life & Environm Sci, Tsukuba, Ibaraki, Japan
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Yu, Gongliang,Jiang, Yongguang,Song, Gaofei,et al. Variation of Microcystis and microcystins coupling nitrogen and phosphorus nutrients in Lake Erhai, a drinking-water source in Southwest Plateau, China[J]. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,2014,21(16):9887-9898.
APA Yu, Gongliang,Jiang, Yongguang,Song, Gaofei,Tan, Wenhua,Zhu, Mengling,&Li, Renhui.(2014).Variation of Microcystis and microcystins coupling nitrogen and phosphorus nutrients in Lake Erhai, a drinking-water source in Southwest Plateau, China.ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,21(16),9887-9898.
MLA Yu, Gongliang,et al."Variation of Microcystis and microcystins coupling nitrogen and phosphorus nutrients in Lake Erhai, a drinking-water source in Southwest Plateau, China".ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH 21.16(2014):9887-9898.
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