Effects of arsenate on the growth and microcystin production of Microcystis aeruginosa isolated from Taiwan as influenced by extracellular phosphate
文献类型：期刊论文
| 作者 | Gong, Yan1,2; Chou, Hong-Nong4; Tu, Chi-dao5; Liu, Xi1,3; Liu, Jiantong1; Song, Lirong1 |
| 刊名 | JOURNAL OF APPLIED PHYCOLOGY
 |
| 出版日期 | 2009-04-01 |
| 卷号 | 21期号:2页码:225-231 |
| 关键词 | Arsenate Phosphate Cyanobacterium Microcystis aeruginosa Microcystins |
| ISSN号 | 0921-8971 |
| 通讯作者 | Liu, JT, Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China |
| 中文摘要 | Arsenic pollution and eutrophication are both prominent issues in the aquaculture ponds of Taiwan. It is important to study the effects of arsenic on algal growth and toxin production in order to assess the ecological risk of arsenic pollution, or at least to understand naturally occurring ponds. The sensitivity of algae to arsenate has often been linked to the structural similarities between arsenate and phosphate. Thus, in this study we examined the effects of arsenate (10(-8) to 10(-4) M) on Microcystis aeruginosa TY-1 isolated from Taiwan, under two phosphate regimes. The present study showed that M. aeruginosa TY-1 was arsenate tolerant up to 10(-4) M, and that this tolerance was not affected by extracellular phosphate. However, it seems that extracellular phosphate contributed to microcystin production and leakage by M. aeruginosa in response to arsenate. Under normal phosphate conditions, total toxin yields after arsenate treatment followed a typical inverted U-shape hormesis, with a peak value of 2.25 +/- 0.06 mg L-1 in the presence of 10(-7) M arsenate, whereas 10(-8) to 10(-6) M arsenate increased leakage of similar to 75% microcystin. Under phosphate starvation, total toxin yields were not affected by arsenate, while 10(-6) and 10(-5) M arsenate stimulated microcystin leakage. It is suggested that arsenate may play a role in the process of microcystin biosynthesis and excretion. Given the arsenic concentrations in aquaculture ponds in Taiwan, arsenate favors survival of toxic M. aeruginosa in such ponds, and arsenate-stimulated microcystin production and leakage may have an impact on the food chain. |
| 英文摘要 | Arsenic pollution and eutrophication are both prominent issues in the aquaculture ponds of Taiwan. It is important to study the effects of arsenic on algal growth and toxin production in order to assess the ecological risk of arsenic pollution, or at least to understand naturally occurring ponds. The sensitivity of algae to arsenate has often been linked to the structural similarities between arsenate and phosphate. Thus, in this study we examined the effects of arsenate (10(-8) to 10(-4) M) on Microcystis aeruginosa TY-1 isolated from Taiwan, under two phosphate regimes. The present study showed that M. aeruginosa TY-1 was arsenate tolerant up to 10(-4) M, and that this tolerance was not affected by extracellular phosphate. However, it seems that extracellular phosphate contributed to microcystin production and leakage by M. aeruginosa in response to arsenate. Under normal phosphate conditions, total toxin yields after arsenate treatment followed a typical inverted U-shape hormesis, with a peak value of 2.25 +/- 0.06 mg L(-1) in the presence of 10(-7) M arsenate, whereas 10(-8) to 10(-6) M arsenate increased leakage of similar to 75% microcystin. Under phosphate starvation, total toxin yields were not affected by arsenate, while 10(-6) and 10(-5) M arsenate stimulated microcystin leakage. It is suggested that arsenate may play a role in the process of microcystin biosynthesis and excretion. Given the arsenic concentrations in aquaculture ponds in Taiwan, arsenate favors survival of toxic M. aeruginosa in such ponds, and arsenate-stimulated microcystin production and leakage may have an impact on the food chain. |
| WOS标题词 | Science & Technology ; Life Sciences & Biomedicine |
| 学科主题 | Biotechnology & Applied Microbiology; Marine & Freshwater Biology |
| 类目[WOS] | Biotechnology & Applied Microbiology ; Marine & Freshwater Biology |
| 研究领域[WOS] | Biotechnology & Applied Microbiology ; Marine & Freshwater Biology |
| 关键词[WOS] | CYANOBACTERIAL TOXINS ; PUBLIC-HEALTH ; CHLORELLA SP ; TOXICITY ; ACCUMULATION ; TOLERANCE ; NITROGEN ; PHYTOPLANKTON ; COMMUNITIES ; INHIBITION |
| 收录类别 | SCI |
| 资助信息 | State Key Basic Research and Development Plan [2002CB412304] |
| 语种 | 英语 |
| WOS记录号 | WOS:000264483600008 |
| 公开日期 | 2010-10-13 |
| 源URL | [http://ir.ihb.ac.cn/handle/152342/7804]  |
| 专题 | 水生生物研究所_中科院水生所知识产出（2009年前）_期刊论文 |
| 作者单位 | 1.Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China 2.Hubei Acad Agr Sci, Agr Testing & Informat Ctr, Wuhan 430064, Peoples R China 3.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China 4.Natl Taiwan Univ, Inst Fisheries Sci, Taipei 10617, Taiwan 5.Natl Cent Univ, Dept Chem, Tao Yuan 32001, Taiwan |
| 推荐引用方式 GB/T 7714 | Gong, Yan,Chou, Hong-Nong,Tu, Chi-dao,et al. Effects of arsenate on the growth and microcystin production of Microcystis aeruginosa isolated from Taiwan as influenced by extracellular phosphate[J]. JOURNAL OF APPLIED PHYCOLOGY,2009,21(2):225-231. |
| APA | Gong, Yan,Chou, Hong-Nong,Tu, Chi-dao,Liu, Xi,Liu, Jiantong,&Song, Lirong.(2009).Effects of arsenate on the growth and microcystin production of Microcystis aeruginosa isolated from Taiwan as influenced by extracellular phosphate.JOURNAL OF APPLIED PHYCOLOGY,21(2),225-231. |
| MLA | Gong, Yan,et al."Effects of arsenate on the growth and microcystin production of Microcystis aeruginosa isolated from Taiwan as influenced by extracellular phosphate".JOURNAL OF APPLIED PHYCOLOGY 21.2(2009):225-231. |
入库方式： OAI收割
来源：水生生物研究所
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