Competition between toxic Microcystis aeruginosa and nontoxic Microcystis wesenbergii with Anabaena PCC7120
文献类型：期刊论文
| 作者 | Li, Yinxia1,2; Li, Dunhai1 |
| 刊名 | JOURNAL OF APPLIED PHYCOLOGY
 |
| 出版日期 | 2012 |
| 卷号 | 24期号:1页码:69-78 |
| 关键词 | Allelopathic effect Anabaena Competition Cyanobacteria Microcystin-LR Microcystis |
| ISSN号 | 0921-8971 |
| 通讯作者 | Li, DH (reprint author), Chinese Acad Sci, Inst Hydrobiol, 7 S Donghu Rd, Wuhan 430072, Peoples R China |
| 中文摘要 | 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. |
| 英文摘要 | 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. |
| WOS标题词 | Science & Technology ; Life Sciences & Biomedicine |
| 类目[WOS] | Biotechnology & Applied Microbiology ; Marine & Freshwater Biology |
| 研究领域[WOS] | Biotechnology & Applied Microbiology ; Marine & Freshwater Biology |
| 关键词[WOS] | BLOOM-FORMING CYANOBACTERIA ; LINKED-IMMUNOSORBENT-ASSAY ; PLANKTOTHRIX-AGARDHII ; ALGAE ; LAKE ; PHYTOPLANKTON ; TEMPERATURE ; GROWTH ; LIGHT ; EUTROPHICATION |
| 收录类别 | SCI |
| 资助信息 | 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] |
| 语种 | 英语 |
| WOS记录号 | WOS:000299122200008 |
| 公开日期 | 2012-04-01 |
| 源URL | [http://ir.ihb.ac.cn/handle/342005/16751]  |
| 专题 | 水生生物研究所_水环境工程研究中心_期刊论文 |
| 作者单位 | 1.Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Yinxia,Li, Dunhai. 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.(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. |
入库方式： OAI收割
来源：水生生物研究所
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