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Competition between toxic Microcystis aeruginosa and nontoxic Microcystis wesenbergii with Anabaena PCC7120
Li, Yinxia1,2; Li, Dunhai1; Li, DH (reprint author), Chinese Acad Sci, Inst Hydrobiol, 7 S Donghu Rd, Wuhan 430072, Peoples R China
2012
Source PublicationJOURNAL OF APPLIED PHYCOLOGY
ISSN0921-8971
Volume24Issue:1Pages:69-78
AbstractTo elucidate the changes in the proportions of microcystin (MC)-producing Microcystis, non-MC-producing Microcystis and Anabaena strains during cyanobacteria blooms, we compared their fitness under different initial biomass ratios. Culture experiments were carried out with three cyanobacterial strains: single-celled toxic Microcystis aeruginosa PCC7806 (Ma7806), single-celled nontoxic Microcystis wesenbergii FACHB-929 (Mw929) and filamentous Anabaena PCC7120 (An7120). Growth curves expressed as biovolume, Ma7806 microcystin-LR (MC-LR) content (detected with HPLC and ELISA), and the culture medium dissolved total nitrogen and dissolved total phosphorous (DTP) were measured to monitor nutrient uptake. Results suggest that the dominant strain in competition experiments between Ma7806 and An7120 was mainly controlled by the initial biomass ratio of the two strains, but there was also evidence for allelopathic interactions, where MC-LR produced by Ma7806 played an important role in the competition process. However, Mw929 was always less competitive when co-cultured with An7120 regardless of initial biomass ratio. Culture medium DTP showed significant differences between competition experiments in all sets, suggesting that Mw929 could be more suited to low phosphorus environments than Ma7806 and An7120. Overall, the competitive ability of Ma7806 was stronger than Mw929 when co-cultured with An7120 in the case of excess nutrients and the results could well unravel the seasonal succession process of cyanobacteria blooms.; To elucidate the changes in the proportions of microcystin (MC)-producing Microcystis, non-MC-producing Microcystis and Anabaena strains during cyanobacteria blooms, we compared their fitness under different initial biomass ratios. Culture experiments were carried out with three cyanobacterial strains: single-celled toxic Microcystis aeruginosa PCC7806 (Ma7806), single-celled nontoxic Microcystis wesenbergii FACHB-929 (Mw929) and filamentous Anabaena PCC7120 (An7120). Growth curves expressed as biovolume, Ma7806 microcystin-LR (MC-LR) content (detected with HPLC and ELISA), and the culture medium dissolved total nitrogen and dissolved total phosphorous (DTP) were measured to monitor nutrient uptake. Results suggest that the dominant strain in competition experiments between Ma7806 and An7120 was mainly controlled by the initial biomass ratio of the two strains, but there was also evidence for allelopathic interactions, where MC-LR produced by Ma7806 played an important role in the competition process. However, Mw929 was always less competitive when co-cultured with An7120 regardless of initial biomass ratio. Culture medium DTP showed significant differences between competition experiments in all sets, suggesting that Mw929 could be more suited to low phosphorus environments than Ma7806 and An7120. Overall, the competitive ability of Ma7806 was stronger than Mw929 when co-cultured with An7120 in the case of excess nutrients and the results could well unravel the seasonal succession process of cyanobacteria blooms.
SubtypeArticle
KeywordAllelopathic Effect Anabaena Competition Cyanobacteria Microcystin-lr Microcystis
Department[Li, Yinxia; Li, Dunhai] Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China; [Li, Yinxia] Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China
DOI10.1007/s10811-010-9648-x
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
Funding OrganizationNational Natural Science Foundation of China[40971249]; National Basic Research and Development Plan[2008CB418002]; National Programs of Water Body Pollution Control and Remediation[2008ZX07103-004-01, 2009ZX07104-005-3] ; National Natural Science Foundation of China[40971249]; National Basic Research and Development Plan[2008CB418002]; National Programs of Water Body Pollution Control and Remediation[2008ZX07103-004-01, 2009ZX07104-005-3] ; National Natural Science Foundation of China[40971249]; National Basic Research and Development Plan[2008CB418002]; National Programs of Water Body Pollution Control and Remediation[2008ZX07103-004-01, 2009ZX07104-005-3] ; National Natural Science Foundation of China[40971249]; National Basic Research and Development Plan[2008CB418002]; National Programs of Water Body Pollution Control and Remediation[2008ZX07103-004-01, 2009ZX07104-005-3]
Indexed BySCI
Language英语
WOS Research AreaBiotechnology & Applied Microbiology ; Marine & Freshwater Biology
WOS SubjectBiotechnology & Applied Microbiology ; Marine & Freshwater Biology
WOS IDWOS:000299122200008
WOS KeywordBLOOM-FORMING CYANOBACTERIA ; LINKED-IMMUNOSORBENT-ASSAY ; PLANKTOTHRIX-AGARDHII ; ALGAE ; LAKE ; PHYTOPLANKTON ; TEMPERATURE ; GROWTH ; LIGHT ; EUTROPHICATION
Funding OrganizationNational Natural Science Foundation of China[40971249]; National Basic Research and Development Plan[2008CB418002]; National Programs of Water Body Pollution Control and Remediation[2008ZX07103-004-01, 2009ZX07104-005-3] ; National Natural Science Foundation of China[40971249]; National Basic Research and Development Plan[2008CB418002]; National Programs of Water Body Pollution Control and Remediation[2008ZX07103-004-01, 2009ZX07104-005-3] ; National Natural Science Foundation of China[40971249]; National Basic Research and Development Plan[2008CB418002]; National Programs of Water Body Pollution Control and Remediation[2008ZX07103-004-01, 2009ZX07104-005-3] ; National Natural Science Foundation of China[40971249]; National Basic Research and Development Plan[2008CB418002]; National Programs of Water Body Pollution Control and Remediation[2008ZX07103-004-01, 2009ZX07104-005-3]
Citation statistics
Cited Times:32[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ihb.ac.cn/handle/342005/16751
Collection水环境工程研究中心_期刊论文
Corresponding AuthorLi, DH (reprint author), Chinese Acad Sci, Inst Hydrobiol, 7 S Donghu Rd, Wuhan 430072, Peoples R China
Affiliation1.Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Li, Yinxia,Li, Dunhai,Li, DH . Competition between toxic Microcystis aeruginosa and nontoxic Microcystis wesenbergii with Anabaena PCC7120[J]. JOURNAL OF APPLIED PHYCOLOGY,2012,24(1):69-78.
APA Li, Yinxia,Li, Dunhai,&Li, DH .(2012).Competition between toxic Microcystis aeruginosa and nontoxic Microcystis wesenbergii with Anabaena PCC7120.JOURNAL OF APPLIED PHYCOLOGY,24(1),69-78.
MLA Li, Yinxia,et al."Competition between toxic Microcystis aeruginosa and nontoxic Microcystis wesenbergii with Anabaena PCC7120".JOURNAL OF APPLIED PHYCOLOGY 24.1(2012):69-78.
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