Arsenic Uptake by Rice Is Influenced by Microbe-Mediated Arsenic Redox Changes in the Rhizosphere
文献类型：期刊论文
| 作者 | Jia, Yan1,2; Huang, Hai1; Chen, Zheng1; Zhu, Yong-Guan1,3 |
| 刊名 | ENVIRONMENTAL SCIENCE & TECHNOLOGY
 |
| 出版日期 | 2014-01-21 |
| 卷号 | 48期号:2页码:1001-1007 |
| ISSN号 | 0013-936X |
| 关键词 | oryza-sativa l. iron plaque dissimilatory arsenate oxidase genes phylogenetic analysis west-bengal paddy soil reduction speciation accumulation |
| 其他题名 | Environ. Sci. Technol. |
| 中文摘要 | Arsenic (As) uptake by rice is largely determined by As speciation, which is strongly influenced by microbial activities. However, little is known about interactions between root and rhizosphere microbes, particularly on arsenic oxidation and reduction. In this study, two rice cultivars with different radial oxygen loss (ROL) ability were used to investigate the impact of microbially mediated As redox changes in the rhizosphere on As uptake. Results showed that the cultivar with higher ROL (Yangdao) had lower. As uptake than that with lower ROL (Nongken). The enhancement of the rhizospheric effect on the abundance of the arsenite (As(III)) oxidase gene (aroA-like) was greater than on the arsenate (As(V)) reductase gene (arsC), and As(V) respiratory reductase gene (arrA), resulting in As oxidation and sequestration in the rhizosphere,. particularly for cultivar Yangdao. The community of As(III)-oxidizing bacteria in the rhizosphere was dominated by alpha-Proteobacteria and beta-Proteobacteria and was influenced by rhizospheric effects, rice straw application, growth stage, and cultivar. Application of rice straw into the soil increased As release and accumulation into rice plants. These results highlighted that uptake of As by. rice is influenced by microbial processes, especially As oxidation in the rhizosphere, and these processes are influenced by root ROL and organic matter application. |
| 英文摘要 | Arsenic (As) uptake by rice is largely determined by As speciation, which is strongly influenced by microbial activities. However, little is known about interactions between root and rhizosphere microbes, particularly on arsenic oxidation and reduction. In this study, two rice cultivars with different radial oxygen loss (ROL) ability were used to investigate the impact of microbially mediated As redox changes in the rhizosphere on As uptake. Results showed that the cultivar with higher ROL (Yangdao) had lower. As uptake than that with lower ROL (Nongken). The enhancement of the rhizospheric effect on the abundance of the arsenite (As(III)) oxidase gene (aroA-like) was greater than on the arsenate (As(V)) reductase gene (arsC), and As(V) respiratory reductase gene (arrA), resulting in As oxidation and sequestration in the rhizosphere,. particularly for cultivar Yangdao. The community of As(III)-oxidizing bacteria in the rhizosphere was dominated by alpha-Proteobacteria and beta-Proteobacteria and was influenced by rhizospheric effects, rice straw application, growth stage, and cultivar. Application of rice straw into the soil increased As release and accumulation into rice plants. These results highlighted that uptake of As by. rice is influenced by microbial processes, especially As oxidation in the rhizosphere, and these processes are influenced by root ROL and organic matter application. |
| WOS标题词 | Science & Technology ; Technology ; Life Sciences & Biomedicine |
| 类目[WOS] | Engineering, Environmental ; Environmental Sciences |
| 研究领域[WOS] | Engineering ; Environmental Sciences & Ecology |
| 关键词[WOS] | ORYZA-SATIVA L. ; IRON PLAQUE ; DISSIMILATORY ARSENATE ; OXIDASE GENES ; PHYLOGENETIC ANALYSIS ; WEST-BENGAL ; PADDY SOIL ; REDUCTION ; SPECIATION ; ACCUMULATION |
| 收录类别 | SCI |
| 原文出处 | |
| 语种 | 英语 |
| WOS记录号 | WOS:000330205000022 |
| 公开日期 | 2014-05-06 |
| 版本 | 出版稿 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/8030]  |
| 专题 | 过程工程研究所_研究所（批量导入） |
| 作者单位 | 1.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Urban & Reg Ecol, Beijing 100085, Peoples R China 2.Chinese Acad Sci, Inst Proc Engn, Beijing 100190, Peoples R China 3.Chinese Acad Sci, Inst Urban Environm, Key Lab Urban Environm & Hlth, Xiamen 361021, Peoples R China |
| 推荐引用方式 GB/T 7714 | Jia, Yan,Huang, Hai,Chen, Zheng,et al. Arsenic Uptake by Rice Is Influenced by Microbe-Mediated Arsenic Redox Changes in the Rhizosphere[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY,2014,48(2):1001-1007. |
| APA | Jia, Yan,Huang, Hai,Chen, Zheng,&Zhu, Yong-Guan.(2014).Arsenic Uptake by Rice Is Influenced by Microbe-Mediated Arsenic Redox Changes in the Rhizosphere.ENVIRONMENTAL SCIENCE & TECHNOLOGY,48(2),1001-1007. |
| MLA | Jia, Yan,et al."Arsenic Uptake by Rice Is Influenced by Microbe-Mediated Arsenic Redox Changes in the Rhizosphere".ENVIRONMENTAL SCIENCE & TECHNOLOGY 48.2(2014):1001-1007. |
入库方式： OAI收割
来源：过程工程研究所
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