砷-硒交互作用对水稻吸收转运砷和硒的影响

胡莹, 黄益宗, 刘云霞. 砷-硒交互作用对水稻吸收转运砷和硒的影响[J]. 环境化学, 2013, 32(6): 952-958. doi: 10.7524/j.issn.0254-6108.2013.06.005
引用本文: 胡莹, 黄益宗, 刘云霞. 砷-硒交互作用对水稻吸收转运砷和硒的影响[J]. 环境化学, 2013, 32(6): 952-958. doi: 10.7524/j.issn.0254-6108.2013.06.005
HU Ying, HUANG Yizong, LIU Yunxia. Interactions between arsenic and selenium uptake and translocation in rice (Oryza sativa L.) seedlings[J]. Environmental Chemistry, 2013, 32(6): 952-958. doi: 10.7524/j.issn.0254-6108.2013.06.005
Citation: HU Ying, HUANG Yizong, LIU Yunxia. Interactions between arsenic and selenium uptake and translocation in rice (Oryza sativa L.) seedlings[J]. Environmental Chemistry, 2013, 32(6): 952-958. doi: 10.7524/j.issn.0254-6108.2013.06.005

砷-硒交互作用对水稻吸收转运砷和硒的影响

  • 基金项目:

    国家重金属污染治理专项"广西环江县大环江流域土壤重金属污染治理工程项目"

    国家水体污染控制与治理科技重大专项(2009ZX07212-001-05)资助.

Interactions between arsenic and selenium uptake and translocation in rice (Oryza sativa L.) seedlings

  • 摘要: 采用溶液培养法,研究了两种形态无机As与四价Se交互作用对水稻吸收转运As和Se的影响.结果表明,不同形态As与Se交互作用对水稻吸收转运As和Se影响较大,Se(Ⅳ)显著地提高水稻根系而降低水稻茎叶对As的吸收积累.与对照处理相比,在1.0 μmol·L-1 As(Ⅲ)和As(Ⅴ)处理下添加1.0 μmol·L-1 Se(Ⅳ)分别导致水稻根系As含量提高59.5%和21.3%,而水稻茎叶As浓度减少10.4%和21.9%.As(Ⅲ)或As(Ⅴ)处理显著降低水稻茎叶对Se的吸收积累,但As(Ⅴ)处理对水稻根系积累Se没有影响.在1.0 μmol·L-1 Se(Ⅳ)处理下,添加1.0 μmol·L-1 As(Ⅲ)和1.0μmol·L-1 As(Ⅴ)导致水稻茎叶Se浓度分别比对照处理降低41.9%和30.3%.Se(Ⅳ)与As(Ⅲ)或As(Ⅴ)对水稻转运As、Se的能力具有交互拮抗作用.研究结果表明,在As污染农田中,可通过施用Se肥来提高植物的Se营养,降低植物对As的吸收积累,从而降低As对人体健康的危害.
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  • 收稿日期:  2012-09-27

砷-硒交互作用对水稻吸收转运砷和硒的影响

  • 1. 中国科学院生态环境研究中心, 北京, 100085
基金项目:  国家重金属污染治理专项"广西环江县大环江流域土壤重金属污染治理工程项目" 国家水体污染控制与治理科技重大专项(2009ZX07212-001-05)资助.

摘要: 采用溶液培养法,研究了两种形态无机As与四价Se交互作用对水稻吸收转运As和Se的影响.结果表明,不同形态As与Se交互作用对水稻吸收转运As和Se影响较大,Se(Ⅳ)显著地提高水稻根系而降低水稻茎叶对As的吸收积累.与对照处理相比,在1.0 μmol·L-1 As(Ⅲ)和As(Ⅴ)处理下添加1.0 μmol·L-1 Se(Ⅳ)分别导致水稻根系As含量提高59.5%和21.3%,而水稻茎叶As浓度减少10.4%和21.9%.As(Ⅲ)或As(Ⅴ)处理显著降低水稻茎叶对Se的吸收积累,但As(Ⅴ)处理对水稻根系积累Se没有影响.在1.0 μmol·L-1 Se(Ⅳ)处理下,添加1.0 μmol·L-1 As(Ⅲ)和1.0μmol·L-1 As(Ⅴ)导致水稻茎叶Se浓度分别比对照处理降低41.9%和30.3%.Se(Ⅳ)与As(Ⅲ)或As(Ⅴ)对水稻转运As、Se的能力具有交互拮抗作用.研究结果表明,在As污染农田中,可通过施用Se肥来提高植物的Se营养,降低植物对As的吸收积累,从而降低As对人体健康的危害.

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