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Revealing Cryptic Changes of Cyanobacterial Community Structure in Two Eutrophic Lakes Using eDNA Sequencing.
Int J Environ Res Public Health. 2020 09 01; 17(17)IJ

Abstract

Harmful cyanobacterial blooms pose a risk to human health worldwide. To enhance understanding on the bloom-forming mechanism, the spatiotemporal changes in cyanobacterial diversity and composition in two eutrophic lakes (Erhai Lake and Lushui Reservoir) of China were investigated from 2010 to 2011 by high-throughput sequencing of environmental DNA. For each sample, 118 to 260 cpcBA-IGS operational taxonomic units (OTUs) were obtained. Fifty-two abundant OTUs were identified, which made up 95.2% of the total sequences and were clustered into nine cyanobacterial groups. Although the cyanobacterial communities of both lakes were mainly dominated by Microcystis, Erhai Lake had a higher cyanobacterial diversity. The abundance of mixed Nostocales species was lower than that of Microcystis, whereas Phormidium and Synechococcus were opportunistically dominant. The correlation between the occurrence frequency and relative abundance of OTUs was poorly fitted by the Sloan neutral model. Deterministic processes such as phosphorus availability were shown to have significant effects on the cyanobacterial community structure in Erhai Lake. In summary, the Microcystis-dominated cyanobacterial community was mainly affected by the deterministic process. Opportunistically dominant species have the potential to replace Microcystis and form blooms in eutrophic lakes, indicating the necessity to monitor these species for drinking water safety.

Authors+Show Affiliations

Department of Biological Sciences and Technology, School of Environmental Studies, China University of Geosciences, Wuhan 430074, China.Aquatic Ecohealth Group, Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China.Key Laboratory of Algal Biology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China.Key Laboratory of Algal Biology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China.Key Laboratory of Algal Biology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China.

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

32882819

Citation

Jiang, Yongguang, et al. "Revealing Cryptic Changes of Cyanobacterial Community Structure in Two Eutrophic Lakes Using eDNA Sequencing." International Journal of Environmental Research and Public Health, vol. 17, no. 17, 2020.
Jiang Y, Xiao P, Yu G, et al. Revealing Cryptic Changes of Cyanobacterial Community Structure in Two Eutrophic Lakes Using eDNA Sequencing. Int J Environ Res Public Health. 2020;17(17).
Jiang, Y., Xiao, P., Yu, G., Song, G., & Li, R. (2020). Revealing Cryptic Changes of Cyanobacterial Community Structure in Two Eutrophic Lakes Using eDNA Sequencing. International Journal of Environmental Research and Public Health, 17(17). https://doi.org/10.3390/ijerph17176356
Jiang Y, et al. Revealing Cryptic Changes of Cyanobacterial Community Structure in Two Eutrophic Lakes Using eDNA Sequencing. Int J Environ Res Public Health. 2020 09 1;17(17) PubMed PMID: 32882819.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Revealing Cryptic Changes of Cyanobacterial Community Structure in Two Eutrophic Lakes Using eDNA Sequencing. AU - Jiang,Yongguang, AU - Xiao,Peng, AU - Yu,Gongliang, AU - Song,Gaofei, AU - Li,Renhui, Y1 - 2020/09/01/ PY - 2020/06/19/received PY - 2020/08/12/revised PY - 2020/08/28/accepted PY - 2020/9/5/entrez PY - 2020/9/5/pubmed PY - 2020/11/18/medline KW - Microcystis KW - cyanobacterial community KW - diversity KW - eDNA KW - eutrophication JF - International journal of environmental research and public health JO - Int J Environ Res Public Health VL - 17 IS - 17 N2 - Harmful cyanobacterial blooms pose a risk to human health worldwide. To enhance understanding on the bloom-forming mechanism, the spatiotemporal changes in cyanobacterial diversity and composition in two eutrophic lakes (Erhai Lake and Lushui Reservoir) of China were investigated from 2010 to 2011 by high-throughput sequencing of environmental DNA. For each sample, 118 to 260 cpcBA-IGS operational taxonomic units (OTUs) were obtained. Fifty-two abundant OTUs were identified, which made up 95.2% of the total sequences and were clustered into nine cyanobacterial groups. Although the cyanobacterial communities of both lakes were mainly dominated by Microcystis, Erhai Lake had a higher cyanobacterial diversity. The abundance of mixed Nostocales species was lower than that of Microcystis, whereas Phormidium and Synechococcus were opportunistically dominant. The correlation between the occurrence frequency and relative abundance of OTUs was poorly fitted by the Sloan neutral model. Deterministic processes such as phosphorus availability were shown to have significant effects on the cyanobacterial community structure in Erhai Lake. In summary, the Microcystis-dominated cyanobacterial community was mainly affected by the deterministic process. Opportunistically dominant species have the potential to replace Microcystis and form blooms in eutrophic lakes, indicating the necessity to monitor these species for drinking water safety. SN - 1660-4601 UR - https://www.unboundmedicine.com/medline/citation/32882819/Revealing_Cryptic_Changes_of_Cyanobacterial_Community_Structure_in_Two_Eutrophic_Lakes_Using_eDNA_Sequencing_ L2 - https://www.mdpi.com/resolver?pii=ijerph17176356 DB - PRIME DP - Unbound Medicine ER -