Effects of Arsenate on Microcystin Content and Leakage of Microcystis Strain PCC7806 Under Various Phosphate Regimes
文献类型：期刊论文
| 作者 | Gong, Yan1,2; Song, Lirong1; Wu, Xingqiang1,2; Xiao, Bangding1; Fang, Tao1; Liu, Jiantong1 |
| 刊名 | ENVIRONMENTAL TOXICOLOGY
 |
| 出版日期 | 2009-02-01 |
| 卷号 | 24期号:1页码:87-94 |
| 关键词 | arsenate phosphate Microcystis microcystins cyanobacterium |
| ISSN号 | 1520-4081 |
| 通讯作者 | Liu, JT, Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China |
| 中文摘要 | Both arsenic pollution and eutrophication are prominent environmental issues when considering the problem of global water pollution. It is important to reveal the effects of arsenic species on cyanobacterial growth and toxin yields to assess ecological risk of arsenic pollution or at least understand naturally occurring blooms. The sensitivity of cyanobacteria to arsenate has often been linked to the structural similarities of arsenate and phosphate. Thus, we approached the effect of arsenate with concentrations from 10(-8) to 10(-4) M on Microcystis strain PCC7806 under various phosphate regimes. The present study showed that Microcystis strain PCC7806 was arsenate tolerant up to 10(-4) M. And such tolerance was without reference to both content of intra- and extra-cellular phosphate. It seems that arsenate involved the regulation of microcystin synthesis and cellular polyphosphate contributed to microcystin production of Microcystis responding to arsenate, since there was a positive linear correlation of the cellular microcystin quota with the exposure concentration of arsenate when the cells were not preconditioned to phosphate starvation. It is presumed that arsenate could help to actively export microcystins from living Microcystis cells when preconditioned to phosphate starvation and incubated with the medium containing 1 mu M phosphate. This study firstly provided evidence that microcystin content and/or release of Microcystis might be impacted by arsenate if it exists in harmful algal blooms. (C) 2008 Wiley Periodicals, Inc. Environ Toxicol 24:97 94, 2009. |
| 英文摘要 | Both arsenic pollution and eutrophication are prominent environmental issues when considering the problem of global water pollution. It is important to reveal the effects of arsenic species on cyanobacterial growth and toxin yields to assess ecological risk of arsenic pollution or at least understand naturally occurring blooms. The sensitivity of cyanobacteria to arsenate has often been linked to the structural similarities of arsenate and phosphate. Thus, we approached the effect of arsenate with concentrations from 10(-8) to 10(-4) M on Microcystis strain PCC7806 under various phosphate regimes. The present study showed that Microcystis strain PCC7806 was arsenate tolerant up to 10(-4) M. And such tolerance was without reference to both content of intra- and extra-cellular phosphate. It seems that arsenate involved the regulation of microcystin synthesis and cellular polyphosphate contributed to microcystin production of Microcystis responding to arsenate, since there was a positive linear correlation of the cellular microcystin quota with the exposure concentration of arsenate when the cells were not preconditioned to phosphate starvation. It is presumed that arsenate could help to actively export microcystins from living Microcystis cells when preconditioned to phosphate starvation and incubated with the medium containing 1 mu M phosphate. This study firstly provided evidence that microcystin content and/or release of Microcystis might be impacted by arsenate if it exists in harmful algal blooms. (C) 2008 Wiley Periodicals, Inc. Environ Toxicol 24:97 94, 2009. |
| WOS标题词 | Science & Technology ; Life Sciences & Biomedicine ; Physical Sciences |
| 学科主题 | Environmental Sciences; Toxicology; Water Resources |
| 类目[WOS] | Environmental Sciences ; Toxicology ; Water Resources |
| 研究领域[WOS] | Environmental Sciences & Ecology ; Toxicology ; Water Resources |
| 关键词[WOS] | BLUE-GREEN-ALGA ; CYANOBACTERIAL TOXINS ; AERUGINOSA PCC-7806 ; TOLERANCE ; NITROGEN ; GROWTH ; PHYTOPLANKTON ; ACCUMULATION ; COMMUNITIES ; METABOLISM |
| 收录类别 | SCI |
| 资助信息 | State Key Basic Research and Development Plan (973 Plan) [2002CB412300] |
| 语种 | 英语 |
| WOS记录号 | WOS:000263533000011 |
| 公开日期 | 2010-10-13 |
| 源URL | [http://ir.ihb.ac.cn/handle/152342/7864]  |
| 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.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China |
| 推荐引用方式 GB/T 7714 | Gong, Yan,Song, Lirong,Wu, Xingqiang,et al. Effects of Arsenate on Microcystin Content and Leakage of Microcystis Strain PCC7806 Under Various Phosphate Regimes[J]. ENVIRONMENTAL TOXICOLOGY,2009,24(1):87-94. |
| APA | Gong, Yan,Song, Lirong,Wu, Xingqiang,Xiao, Bangding,Fang, Tao,&Liu, Jiantong.(2009).Effects of Arsenate on Microcystin Content and Leakage of Microcystis Strain PCC7806 Under Various Phosphate Regimes.ENVIRONMENTAL TOXICOLOGY,24(1),87-94. |
| MLA | Gong, Yan,et al."Effects of Arsenate on Microcystin Content and Leakage of Microcystis Strain PCC7806 Under Various Phosphate Regimes".ENVIRONMENTAL TOXICOLOGY 24.1(2009):87-94. |
入库方式： OAI收割
来源：水生生物研究所
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