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Qiu P, Chen Y, Li C, Huo D, Bi Y, Wang J, Li Y, Li R, Yu G. Using molecular detection for the diversity and occurrence of cyanobacteria and 2-methylisoborneol-producing cyanobacteria in an eutrophicated reservoir in northern China. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2021; 288:117772. [PMID: 34273769 DOI: 10.1016/j.envpol.2021.117772] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2021] [Revised: 07/06/2021] [Accepted: 07/08/2021] [Indexed: 06/13/2023]
Abstract
Aquatic ecosystems and drinking water supply systems worldwide are increasingly affected by taste and odor episodes. In this study, molecular approaches including next-generation sequencing (NGS) and quantitative polymerase chain reaction (qPCR) were used to study the diversity and dynamics of cyanobacteria and 2-methylisoborneol (2-MIB)-producing cyanobacteria in Yuqiao Reservoir, a eutrophicated drinking water reservoir in Tianjin city, northern China. NGS revealed that the entire cyanobacterial community consisted of 16 genera, with Planktothrix (28.8%), Pseudanabaena (18.4%), Cylindrospermosis (7.8%), and Microcystis (7.6%) being the dominant genera, while microscopic examination identified only eight cyanobacterial genera. NGS of the 2-MIB synthesis gene revealed that Pseudanabaena and Planktothricoides were the main 2-MIB producers, with Pseudanabaena being dominant. This finding demonstrated that NGS can identify 2-MIB producers quickly and accurately and it can thus play an important role in the practical monitoring of aquatic ecology. The qPCR test showed 2-MIB synthesis gene with 4.27 × 106 copies/L to 2.24 × 109copies/L occurring at the three sampling sites. The mic gene copy number increased before the 2-MIB concentration increased, indicating that forecasting role in dealing with the 2-MIB concentration by gene copy number. Predicting 2-MIB by qPCR in the field must be verified with additional studies. The combination of NGS and qPCR can be an even more comprehensive method to provide early warning information to managers of reservoirs and water utilities facing taste and odor incidents. This is the first amplicon NGS dataset based on 2-MIB gene to study the diversity and dynamics of 2-MIB-producing cyanobacteria.
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Affiliation(s)
- Pengfei Qiu
- Key Laboratory of Algal Biology, Institute of Hydrobiology, Chinese Academy of Sciences, South Donghu Road 7, Wuhan, 430072, China; University of Chinese Academy of Sciences, Beijing, 100039, China
| | - Youxin Chen
- Key Laboratory of Algal Biology, Institute of Hydrobiology, Chinese Academy of Sciences, South Donghu Road 7, Wuhan, 430072, China; University of Chinese Academy of Sciences, Beijing, 100039, China
| | - Chenjie Li
- Key Laboratory of Algal Biology, Institute of Hydrobiology, Chinese Academy of Sciences, South Donghu Road 7, Wuhan, 430072, China; University of Chinese Academy of Sciences, Beijing, 100039, China
| | - Da Huo
- Key Laboratory of Algal Biology, Institute of Hydrobiology, Chinese Academy of Sciences, South Donghu Road 7, Wuhan, 430072, China; University of Chinese Academy of Sciences, Beijing, 100039, China
| | - Yonghong Bi
- Key Laboratory of Algal Biology, Institute of Hydrobiology, Chinese Academy of Sciences, South Donghu Road 7, Wuhan, 430072, China
| | - Jianbo Wang
- Tianjin Hydraulic Research Institute, Tianjin, 300061, China
| | - Yunchuang Li
- China Construction First Group Corporation Limited, Tianjin, 300061, China
| | - Renhui Li
- Key Laboratory of Algal Biology, Institute of Hydrobiology, Chinese Academy of Sciences, South Donghu Road 7, Wuhan, 430072, China; College of Life and Environmental Sciences, Wenzhou University, Wenzhou, 325039, China
| | - Gongliang Yu
- Key Laboratory of Algal Biology, Institute of Hydrobiology, Chinese Academy of Sciences, South Donghu Road 7, Wuhan, 430072, China.
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Microbial Diversity of Temperate Pine and Native Forest Soils Profiled by 16S rRNA Gene Amplicon Sequencing. Microbiol Resour Announc 2021; 10:10/20/e00298-21. [PMID: 34016677 PMCID: PMC8188351 DOI: 10.1128/mra.00298-21] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
Most biodiversity measures indicate an ongoing deterioration due to intensifying anthropogenic pressures even though efforts are being intensified worldwide to conserve biodiversity. Knowledge of the implication of land-use change on soil bacterial communities is essential for ecosystem restoration. Most biodiversity measures indicate an ongoing deterioration due to intensifying anthropogenic pressures even though efforts are being intensified worldwide to conserve biodiversity. Knowledge of the implication of land use change on soil bacterial communities is essential for ecosystem restoration. Here, the effect of the conversion of native forests to temperate pine forests on soil bacterial diversity and community composition was investigated. The diversity and composition of the bacterial communities were affected by land use change across the sites.
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