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Zepernick BN, McKay RML, Martin RM, Bullerjahn GS, Paerl HW, Wilhelm SW. A tale of two blooms: do ecological paradigms for algal bloom success and succession require revisiting? JOURNAL OF GREAT LAKES RESEARCH 2024; 50:102336. [PMID: 39050868 PMCID: PMC11268832 DOI: 10.1016/j.jglr.2024.102336] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 07/27/2024]
Abstract
Lake Erie algal bloom discussions have historically focused on cyanobacteria, with foundational "blooms like it hot" and "high nutrient" paradigms considered as primary drivers behind cyanobacterial bloom success. Yet, recent surveys have rediscovered winter-spring diatom blooms, introducing another key player in the Lake Erie eutrophication and algal bloom story which has been historically overlooked. These blooms (summer vs. winter) have been treated as solitary events separated by spatial and temporal gradients. However, new evidence suggests they may not be so isolated, linked in a manner that manifests as an algal bloom cycle. Equally notable are the emerging reports of cyanobacterial blooms in cold and/or oligotrophic freshwaters, which have been interpreted by some as shifts in classical bloom paradigms. These emerging bloom reports have led many to ask "what is a bloom?". Furthermore, questioning classic paradigms has caused others to wonder if we are overlooking additional factors which constrain bloom success. In light of emerging data and ideas, we revisited foundational concepts within the context of Lake Erie algal blooms and derived five key take-aways: 1) Additional bloom-formers (diatoms) need to be included in Lake Erie algal discussions, 2) The term "bloom" must be reinforced with a clear definition and quantitative metrics for each event, 3) Algal blooms should not be studied solitarily, 4) Shifts in physiochemical conditions serve as an alternative interpretation to potential shifts in ecological paradigms, 5) Additional factors which constrain bloom success and succession (i.e., pH and light) require consideration.
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Affiliation(s)
| | - R. Michael L. McKay
- Great Lakes Institute for Environmental Research, University of Windsor, Windsor, Ontario, Canada
| | - Robbie M. Martin
- Department of Microbiology, The University of Tennessee, Knoxville, TN, USA
| | - George S. Bullerjahn
- Great Lakes Center for Fresh Waters and Human Health, Bowling Green State University, Bowling Green, OH, USA
| | - Hans W. Paerl
- Institute of Marine Sciences, University of North Carolina at Chapel Hill, Morehead City, NC, USA
| | - Steven W. Wilhelm
- Department of Microbiology, The University of Tennessee, Knoxville, TN, USA
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Liu Q, Zhang H, Chang F, Qiu J, Duan L, Hu G, Zhang Y, Zhang X, Xu L. The effect of graphene photocatalysis on microbial communities in Lake Xingyun, southwestern China. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:48851-48868. [PMID: 35211854 DOI: 10.1007/s11356-021-18183-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2021] [Accepted: 12/14/2021] [Indexed: 06/14/2023]
Abstract
Graphene photocatalysis is a new method for harmful algae and water pollution control. However, microbial communities undergoing graphene photocatalysis treatment in freshwater lakes have been poorly studied. Here, using 16S rRNA and 18S rRNA gene high-throughput sequencing, the responses of microbial communities to graphene photocatalysis were analyzed in the eutrophic lake, Lake Xinyun, southwestern China. For microeukaryotes, we found that Arthropoda was dominant in summer, while its abundant level declined in spring under natural conditions. The evident reduction of Arthropods was observed after graphene photocatalysis treatment in summer and then reached a relatively stable level. For bacteria, Cyanobacteria decreased in summer due to the graphene photocatalysis-mediated inactivation. However, Cyanobacteria was higher in the treated group in spring with a genera group-shift. Functional analysis revealed that microeukaryotes showed higher potential for fatty acid oxidation and TCA cycle in the treated group in summer, but they were more abundant in control in spring. Pathways of starch and sucrose metabolism and galactose metabolism were more abundant in control in summer, while they were enriched in the treated group in spring for bacteria. This study offers insights into the effects of graphene photocatalysis on microbial communities and their functional potential in eutrophic lake.
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Affiliation(s)
- Qi Liu
- Institute for Ecological Research and Pollution Control of Plateau Lakes, School of Ecology and Environmental Science, Yunnan University, Kunming, 650504, China
| | - Hucai Zhang
- Institute for Ecological Research and Pollution Control of Plateau Lakes, School of Ecology and Environmental Science, Yunnan University, Kunming, 650504, China.
| | - Fengqin Chang
- Institute for Ecological Research and Pollution Control of Plateau Lakes, School of Ecology and Environmental Science, Yunnan University, Kunming, 650504, China.
| | - Jian Qiu
- Jiangsu Shuangliang Graphene Photocatalytic Technology Co., Ltd., Jiangyin, 214444, China
| | - Lizeng Duan
- Institute for Ecological Research and Pollution Control of Plateau Lakes, School of Ecology and Environmental Science, Yunnan University, Kunming, 650504, China
| | - Guangzhi Hu
- Institute for Ecological Research and Pollution Control of Plateau Lakes, School of Ecology and Environmental Science, Yunnan University, Kunming, 650504, China
| | - Yun Zhang
- Institute for Ecological Research and Pollution Control of Plateau Lakes, School of Ecology and Environmental Science, Yunnan University, Kunming, 650504, China
| | - Xiaonan Zhang
- Institute for Ecological Research and Pollution Control of Plateau Lakes, School of Ecology and Environmental Science, Yunnan University, Kunming, 650504, China
| | - Liang Xu
- Jiangsu Shuangliang Graphene Photocatalytic Technology Co., Ltd., Jiangyin, 214444, China
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Zhang J, Nawaz MZ, Zhu D, Yan W, Alghamdi HA, Lu Z. Diversity, seasonal succession and host specificity of bacteria associated with cyanobacterial aggregates in a freshwater lake. ENVIRONMENTAL TECHNOLOGY & INNOVATION 2021; 24:101988. [DOI: 10.1016/j.eti.2021.101988] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/23/2024]
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Huo D, Gan N, Geng R, Cao Q, Song L, Yu G, Li R. Cyanobacterial blooms in China: diversity, distribution, and cyanotoxins. HARMFUL ALGAE 2021; 109:102106. [PMID: 34815019 DOI: 10.1016/j.hal.2021.102106] [Citation(s) in RCA: 62] [Impact Index Per Article: 20.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2021] [Revised: 09/14/2021] [Accepted: 09/14/2021] [Indexed: 06/13/2023]
Abstract
Cyanobacterial blooms, which refer to the massive growth of harmful cyanobacteria, have altered the global freshwater ecosystems during the past decades. China has the largest population in the world, and it is suffering from the harmful effect of water eutrophication and cyanobacterial blooms along with rapid development of the economy and society. Research on cyanobacterial blooms and cyanotoxins in China have been overwhelmingly enhanced and emphasized during the past decades. In the present review, the research on cyanobacterial blooms in China is generally introduced, including the history of cyanobacterial bloom studies, the diversity of the bloom-forming cyanobacteria species (BFCS), and cyanotoxin studies in China. Most studies have focused on Microcystis, its blooms, and microcystins. Newly emerging blooms with the dominance of non-Microcystis BFCS have been gradually expanding to wide regions in China. Understanding the basic features of these non-Microcystis BFCS and their blooms, including their diversity, occurrence, physio-ecology, and harmful metabolites, will provide direction on future studies of cyanobacterial blooms in China.
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Affiliation(s)
- Da Huo
- Key Laboratory of Algal Biology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, PR China
| | - Nanqin Gan
- Key Laboratory of Algal Biology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, PR China
| | - Ruozhen Geng
- Key Laboratory of Algal Biology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, PR China; University of Chinese Academy of Sciences, Beijing 400049, PR China
| | - Qi Cao
- Tianjin Key Laboratory of Aqua-Ecology and Aquaculture, College of Fisheries, Tianjin Agricultural University, Tianjin 300384, PR China
| | - Lirong Song
- Key Laboratory of Algal Biology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, PR China
| | - Gongliang Yu
- Key Laboratory of Algal Biology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, PR China
| | - Renhui Li
- College of Life and Environmental Sciences, Wenzhou University, Wenzhou 325000, PR China.
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Jiang Y, Xiao P, Yu G, Song G, Li R. Revealing Cryptic Changes of Cyanobacterial Community Structure in Two Eutrophic Lakes Using eDNA Sequencing. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2020; 17:ijerph17176356. [PMID: 32882819 PMCID: PMC7504412 DOI: 10.3390/ijerph17176356] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/19/2020] [Revised: 08/12/2020] [Accepted: 08/28/2020] [Indexed: 11/16/2022]
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.
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Affiliation(s)
- Yongguang Jiang
- Department of Biological Sciences and Technology, School of Environmental Studies, China University of Geosciences, Wuhan 430074, China;
| | - Peng Xiao
- Aquatic Ecohealth Group, Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China
- Correspondence:
| | - Gongliang Yu
- Key Laboratory of Algal Biology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China; (G.Y.); (G.S.); (R.L.)
| | - Gaofei Song
- Key Laboratory of Algal Biology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China; (G.Y.); (G.S.); (R.L.)
| | - Renhui Li
- Key Laboratory of Algal Biology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China; (G.Y.); (G.S.); (R.L.)
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Wan L, Chen X, Deng Q, Yang L, Li X, Zhang J, Song C, Zhou Y, Cao X. Phosphorus strategy in bloom-forming cyanobacteria (Dolichospermum and Microcystis) and its role in their succession. HARMFUL ALGAE 2019; 84:46-55. [PMID: 31128812 DOI: 10.1016/j.hal.2019.02.007] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2018] [Revised: 02/18/2019] [Accepted: 02/22/2019] [Indexed: 06/09/2023]
Abstract
Dolichospermum (formerly Anabaena) and Microcystis cause harmful cyanobacterial blooms in freshwater ecosystems worldwide. Input reduction of both nitrogen (N) and phosphorus (P) are commonly recognized as basic ways of controlling blooms, but little is known about the roles of nutrients and their using strategy among cyanobacteria in triggering the succession of diazotrophic to non-diazotrophic cyanobacteria. In this study, we investigated in situ responses of cyanobactria to ambient P status during the transition from Dolichospermum flos-aquae to Microcystis spp. in Lake Taihu and Lake Chaohu. While dominant in phytoplankton community, D. flos-aquae experienced P deficiency as evidenced by qualitative detection of extracellular phosphatase via enzyme labeled fluorescence (ELF). The percentage of ELF-labelled D. flos-aquae cells was 33% when it dominated the phytoplankton community, and was 78% when it co-dominated with Microcystis spp., indicating an increase in P deficiency. Meanwhile, no ELF-labelled Microcystis cells were observed while polyphosphate body (PPB) were present, suggesting that Microcystis spp. were not P deficient. Additionally, the percentages of Microcystis cells containing PPB showed an inverted "U-shaped" relationship with concentrations on soluble reactive phosphorus (SRP). To validate the field observation, a laboratory study of the monocultures of the dominant cyanobacteria was conducted. Extracellular alkaline phosphatase activity (APA) and PPB accumulation were regulated by P availability in monocultures of D. flos-aquae. Interestingly, no cell bound extracellular phosphatase was found on Microcystis aeruginasa even in the culture without P supply. Consistently, the expressions of phosphatase encoding gene phoX showed no differences among the treatments. The way in which PPB accumulation occurred in Microcystis spp. in response to P availability in the cultures was similar to that observed in the field, demonstrating a strategy of energy conservation over P accumulation. The competitive advantage of Microcystis spp. was displayed at low P concentrations: where it could rapidly uptake and store inorganic P, which also increased the P deficiency of the coexisting phytoplankton species. Responses of P-transport gene pstS confirmed this hypothesis. The physiological and molecular mechanisms mentioned above enable Microcystis to survive and proliferate in environment with low available P supply more efficiently. In conclusion, different cyanobacterial species have distinct ways of responding to P availability, suggesting that the control of cyanobacterial blooms by targeted nutrient reduction is largely dependent upon the dominant species. P reduction is more effective in controlling diazotrophic cyanobacteria than non-diazotrophic cyanobacteria.
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Affiliation(s)
- Lingling Wan
- Key Laboratory of Algal Biology, State key laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, PR China; University of Chinese Academy of Sciences, Beijing, 100039, PR China
| | - Xiaoyan Chen
- Key Laboratory of Algal Biology, State key laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, PR China; University of Chinese Academy of Sciences, Beijing, 100039, PR China
| | - Qinghui Deng
- Key Laboratory of Algal Biology, State key laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, PR China; University of Chinese Academy of Sciences, Beijing, 100039, PR China
| | - Liu Yang
- Key Laboratory of Algal Biology, State key laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, PR China; University of Chinese Academy of Sciences, Beijing, 100039, PR China
| | - Xiaowen Li
- Key Laboratory of Algal Biology, State key laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, PR China; University of Chinese Academy of Sciences, Beijing, 100039, PR China
| | - Junyi Zhang
- Wuxi Environmental Monitoring Centre, Wuxi, 214121, PR China
| | - Chunlei Song
- Key Laboratory of Algal Biology, State key laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, PR China
| | - Yiyong Zhou
- Key Laboratory of Algal Biology, State key laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, PR China
| | - Xiuyun Cao
- Key Laboratory of Algal Biology, State key laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, PR China.
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Li D, Wu N, Tang S, Su G, Li X, Zhang Y, Wang G, Zhang J, Liu H, Hecker M, Giesy JP, Yu H. Factors associated with blooms of cyanobacteria in a large shallow lake, China. ENVIRONMENTAL SCIENCES EUROPE 2018; 30:27. [PMID: 30148024 PMCID: PMC6096964 DOI: 10.1186/s12302-018-0152-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2018] [Accepted: 06/11/2018] [Indexed: 05/25/2023]
Abstract
BACKGROUND Eutrophication of freshwater systems can result in blooms of phytoplankton, in many cases cyanobacteria. This can lead to shifts in structure and functions of phytoplankton communities adversely affecting the quality of drinking water sources, which in turn impairs public health. Relationships between structures of phytoplankton communities and concentrations of the toxicant, microcystin-leucine-arginine (MC-LR), have not been well examined in large shallow lakes. The present study investigated phytoplankton communities at seven locations from January to December of 2015 in Tai Lake, and relationships between structures and diversities of phytoplankton communities and water quality parameters, including concentrations of MC-LR and metals, were analyzed. RESULTS A total of 124 taxa of phytoplankton were observed, and the predominant taxa were Microcystis sp. and Dolichospermum flos-aquae of Cyanophyta and Planctonema sp. of Chlorophyta. The greatest diversities of phytoplankton communities, as indicated by species richness, Simpson, Shannon-Wiener, the Berger and Parker, and the Pielou evenness indices, were observed in spring. Furthermore, productivity of phytoplankton was significantly and negatively correlated with diversities. These results demonstrated that Simpson, Shannon-Wiener, the Berger and Parker, and the Pielou evenness indices of phytoplankton communities were significantly related to trophic status and overall primary productivity in Tai Lake. In addition, temperature of surface water, pH, permanganate index, biochemical oxygen demand, total phosphorus, arsenic, total nitrogen/total phosphorous ratio, and MC-LR were the main factors associated with structures of phytoplankton communities in Tai Lake. CONCLUSION The present study provided helpful information on phytoplankton community structure and diversity in Tai Lake from January to December of 2015. Our findings demonstrated that Simpson, Shannon-Wiener, the Berger and Parker, and the Pielou evenness indices could be used to assess and monitor for status and trends in water quality of Tai Lake. In addition, MC-LR was one of the main factors associated with structures of phytoplankton communities in Tai Lake. The findings may help to address important ecological questions about the impact of a changing environment on biodiversity of lake ecosystems and the control of algae bloom. Further studies are needed to explore the relationship between MC-LR and phytoplankton communities in the laboratory.
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Affiliation(s)
- Di Li
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, Jiangsu 210046 China
- Jiangsu Environmental Monitoring Center, Nanjing, Jiangsu 210036 China
| | - Naicheng Wu
- Department of Hydrology and Water Resources Management, Kiel University, Kiel, 24118 Germany
| | - Song Tang
- National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing, 100021 China
| | - Guanyong Su
- Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing, 210094 China
| | - Xuwen Li
- Jiangsu Environmental Monitoring Center, Nanjing, Jiangsu 210036 China
| | - Yong Zhang
- Jiangsu Environmental Monitoring Center, Nanjing, Jiangsu 210036 China
| | - Guoxiang Wang
- School of the Environment, Nanjing Normal University, Nanjing, Jiangsu 210023 China
| | - Junyi Zhang
- Wuxi Environmental Monitoring Center, Wuxi, Jiangsu 214000 China
| | - Hongling Liu
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, Jiangsu 210046 China
| | - Markus Hecker
- Toxicology Centre, University of Saskatchewan, Saskatoon, SK S7N 5B3 Canada
- School of Environment and Sustainability, University of Saskatchewan, Saskatoon, SK S7N 5C3 Canada
| | - John P. Giesy
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, Jiangsu 210046 China
- Department of Veterinary Biomedical Sciences and Toxicology Centre, University of Saskatchewan, Saskatoon, SK S7N5B3 Canada
- Department of Zoology and Center for Integrative Toxicology, Michigan State University, East Lansing, MI 48824 USA
- School of Biological Sciences, University of Hong Kong, Hong Kong, SAR China
| | - Hongxia Yu
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, Jiangsu 210046 China
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Kim JH, Wang P, Park BS, Kim JH, Patidar SK, Han MS. Revealing the distinct habitat ranges and hybrid zone of genetic sub-populations within Pseudo-nitzschia pungens (Bacillariophyceae) in the West Pacific area. HARMFUL ALGAE 2018; 73:72-83. [PMID: 29602508 DOI: 10.1016/j.hal.2018.01.007] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2017] [Revised: 12/27/2017] [Accepted: 01/20/2018] [Indexed: 06/08/2023]
Abstract
Genetic sub-populations (clades) of cosmopolitan marine diatom Pseudo-nitzschia pungens might have distinct habitats, and their hybrid zone is suspected in higher latitude area of the West Pacific area, however, it is still unrevealed because of technical difficulties and lack of evidences in natural environments. The aim of this study is to investigate the habitat characteristics of each clade of P. pungens on geographical distribution with the habitat temperature ranges of each clade and to reveal their hybrid zone in the West Pacific area. We employed the 137 number of nucleotide sequences of P. pungens and its sampling data (spatial and temporal scale) originated from the West Pacific area, and used field application of qPCR assay for intra-specific level of P. pungens. Only two genotypes, clade I and III, were identified in the West Pacific area. Clade I was distributed from 39 to 32.3°N, and clade III were from 1.4 to 34.4°N. The estimated habitat temperature for the clade I and clade III ranges were 8.1-26.9 °C and 24.2-31.2 °C, respectively. The latitudinal distributions and temperature ranges of each clade were significantly different. The qPCR assay employed, and results suggested that the hybrid zone for clade I and III has been observed in the southern Korean coasts, and clade III might be introduced from the Southern Pacific area. The cell abundances of clade III were strongly related with the higher seawater temperature and warm current force. This study has defined distinct habitat characteristics of genetically different sub-populations of P. pungens, and revealed its hybrid zone in natural environment for the first time. We also provided strong evidences about dispersion of the population of clade III to higher latitude in the West Pacific area.
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Affiliation(s)
- Jin Ho Kim
- Department of Life Science, College of Natural Sciences, Hanyang University, Seoul, South Korea; Research Institute for Natural Sciences, Hanyang University, Seoul, South Korea
| | - Pengbin Wang
- Department of Life Science, College of Natural Sciences, Hanyang University, Seoul, South Korea
| | - Bum Soo Park
- Department of Life Science, College of Natural Sciences, Hanyang University, Seoul, South Korea
| | - Joo-Hwan Kim
- Department of Life Science, College of Natural Sciences, Hanyang University, Seoul, South Korea
| | - Shailesh Kumar Patidar
- Department of Life Science, College of Natural Sciences, Hanyang University, Seoul, South Korea
| | - Myung-Soo Han
- Department of Life Science, College of Natural Sciences, Hanyang University, Seoul, South Korea; Research Institute for Natural Sciences, Hanyang University, Seoul, South Korea.
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Liu Y, Xu Y, Wang Z, Xiao P, Yu G, Wang G, Li R. Dominance and succession of Microcystis genotypes and morphotypes in Lake Taihu, a large and shallow freshwater lake in China. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2016; 219:399-408. [PMID: 27209340 DOI: 10.1016/j.envpol.2016.05.021] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2016] [Revised: 05/10/2016] [Accepted: 05/10/2016] [Indexed: 06/05/2023]
Abstract
Lake Taihu, which is the third largest freshwater lake in China, has experienced extensive cyanobacterial (Microcystis spp.) blooms over the past two decades. However, the distribution, dynamics and succession of the blooms have not been fully studied. To better understand the basic characteristics of Microcystis blooms in Lake Taihu, samples were collected from December 2008 to December 2009. The distribution and dynamics of different Microcystis morphotypes were characterized. Microcystis genotypes were analyzed also by sequencing the clone library of the internal transcribed spacer of the rRNA operon (ITS). The abundance of total Microcystis and the proportion of microcystin-producing subpopulation were estimated by using a quantitative PCR assay. Marked succession in both morphotypes and genotypes of the Microcystis population occurred during the course of the Microcystis bloom. The 2337 ITS sequences were obtained and were revealed to contain 618 Microcystis genotypes, which was the highest Microcystis genetic diversity reported in Lake Taihu. The T1 genotype, which was characterized by strains of Microcystis flos-aquae, was the most dominant genotype during winter and spring around the entire lake and likely acted as the main inoculum for forming blooms the following year. Water temperature periodically affected the succession of both Microcystis genotypes and morphotypes, whereas the micro-environment influenced the spatial distribution of Microcystis genotypes and morphotypes. High ratios of mcyD containing Microcystis subpopulations were detected during the onset and later bloom phases. A redundancy analysis (RDA) indicated that the water temperature and PO4-P were the major factors controlling both the total Microcystis abundance and the proportion of microcystin-producing Microcystis in hyper-eutrophic waters.
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Affiliation(s)
- Yang Liu
- College of Life Science, Henan Normal University, Xinxiang, Henan, 453007, China
| | - Yao Xu
- Institute of Hydrobiology, The Chinese Academy of Sciences, Wuhan, 430072, China
| | - Zhongjie Wang
- Institute of Hydrobiology, The Chinese Academy of Sciences, Wuhan, 430072, China
| | - Peng Xiao
- Institute of Hydrobiology, The Chinese Academy of Sciences, Wuhan, 430072, China
| | - Gongliang Yu
- Institute of Hydrobiology, The Chinese Academy of Sciences, Wuhan, 430072, China
| | - Guoxiang Wang
- Department of Environmental Science and Engineering, College of Geography Science, Nanjing Normal University, Nanjing, 210046, China
| | - Renhui Li
- Institute of Hydrobiology, The Chinese Academy of Sciences, Wuhan, 430072, China.
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Li X, Dreher TW, Li R. An overview of diversity, occurrence, genetics and toxin production of bloom-forming Dolichospermum (Anabaena) species. HARMFUL ALGAE 2016; 54:54-68. [PMID: 28073482 DOI: 10.1016/j.hal.2015.10.015] [Citation(s) in RCA: 87] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/19/2015] [Revised: 10/19/2015] [Accepted: 10/24/2015] [Indexed: 05/12/2023]
Abstract
The new genus name Dolichospermum, for most of the planktonic former members of the genus Anabaena, is one of the most ubiquitous bloom-forming cyanobacterial genera. Its dominance and persistence have increased in recent years, due to eutrophication from anthropogenic activities and global climate change. Blooms of Dolichospermum species, with their production of secondary metabolites that commonly include toxins, present a worldwide threat to environmental and public health. In this review, recent advances of the genus Dolichospermum are summarized, including taxonomy, genetics, bloom occurrence, and production of toxin and taste-and-odor compounds. The recent and continuing acquisition of genome sequences is ushering in new methods for monitoring and understanding the factors regulating bloom dynamics.
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Affiliation(s)
- Xiaochuang Li
- Key Laboratory of Algal Biology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, PR China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Theo W Dreher
- Department of Microbiology, Oregon State University, Corvallis, OR, USA; Center for Genome Research and Biocomputing, Oregon State University, Corvallis, OR, USA
| | - Renhui Li
- Key Laboratory of Algal Biology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, PR China.
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Zhang JY, Guan R, Zhang HJ, Li H, Xiao P, Yu GL, Du L, Cao DM, Zhu BC, Li RH, Lu ZH. Complete genome sequence and genomic characterization of Microcystis panniformis FACHB 1757 by third-generation sequencing. Stand Genomic Sci 2016; 11:11. [PMID: 26823957 PMCID: PMC4730716 DOI: 10.1186/s40793-016-0130-5] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2015] [Accepted: 01/05/2016] [Indexed: 11/10/2022] Open
Abstract
The cyanobacterial genus Microcystis is well known as the main group that forms harmful blooms in water. A strain of Microcystis, M. panniformis FACHB1757, was isolated from Meiliang Bay of Lake Taihu in August 2011. The whole genome was sequenced using PacBio RS II sequencer with 48-fold coverage. The complete genome sequence with no gaps contained a 5,686,839 bp chromosome and a 38,683 bp plasmid, which coded for 6,519 and 49 proteins, respectively. Comparison with strains of M. aeruginosa and some other water bloom-forming cyanobacterial species revealed large-scale structure rearrangement and length variation at the genome level along with 36 genomic islands annotated genome-wide, which demonstrates high plasticity of the M. panniformis FACHB1757 genome and reveals that Microcystis has a flexible genome evolution.
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Affiliation(s)
- Jun-Yi Zhang
- State Key Laboratory of Bioelectronics, School of Biological Sciences and Medical Engineering, Southeast University, Nanjing, 210096 China.,Wuxi Environmental Monitoring Center, Wuxi, 214121 China
| | - Rui Guan
- State Key Laboratory of Bioelectronics, School of Biological Sciences and Medical Engineering, Southeast University, Nanjing, 210096 China
| | - Hu-Jun Zhang
- Wuxi Environmental Monitoring Center, Wuxi, 214121 China
| | - Hua Li
- Institute of Hydrobiology, The Chinese Academy of Sciences, Wuhan, Hubei 430072 China
| | - Peng Xiao
- Shenzhen Key Laboratory for Marine Bio-resource and Eco-environment, College of Life Sciences, Shenzhen University, Shenzhen, 518060 China
| | - Gong-Liang Yu
- Institute of Hydrobiology, The Chinese Academy of Sciences, Wuhan, Hubei 430072 China
| | - Lei Du
- Nextomics Biosciences Co., Ltd., Wuhan, Hubei 430072 China
| | - De-Min Cao
- Nextomics Biosciences Co., Ltd., Wuhan, Hubei 430072 China
| | - Bing-Chuan Zhu
- Wuxi Environmental Monitoring Center, Wuxi, 214121 China
| | - Ren-Hui Li
- Institute of Hydrobiology, The Chinese Academy of Sciences, Wuhan, Hubei 430072 China
| | - Zu-Hong Lu
- State Key Laboratory of Bioelectronics, School of Biological Sciences and Medical Engineering, Southeast University, Nanjing, 210096 China.,Department of Biomedical Engineering, College of Engineering, Peking University, Beijing, 100871 China
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