Influences of arsenate and/or phosphate adsorption to ferrihydrite on iron-reducing and arsenic-reducing microbial communities in paddy soil revealed by rRNA-C-13-acetate probing
文献类型：期刊论文
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| 作者 | Ding, Long-Jun ; Li, Xiao-Min; Wang, Yi-Fei; Luo, Chong-Yi; Wang, Xue-Dong; Duan, Gui-Lan; Zhu, Yong-Guan
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| 刊名 | SOIL BIOLOGY & BIOCHEMISTRY
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| 出版日期 | 2022-06 |
| 卷号 | 169期号:0页码:108679 |
| 关键词 | DISSIMILATORY ARSENATE ELECTRON SHUTTLES REDUCTION RICE GEOBACTER SEDIMENTS BACTERIA MICROORGANISMS CHRONOSEQUENCE IDENTIFICATION |
| ISSN号 | 0038-0717 |
| 英文摘要 | Iron (oxyhydr)oxides [Fe(III)] are important adsorbents of arsenate [As(V)] and phosphate in paddy soils, and microbial Fe(III) reduction is hence central to biogeochemical cycles of arsenic and phosphorus. Nevertheless, how Fe(III) reducers and As(V) reducers at the community level respond to As(V) and phosphate adsorption in paddy soils remain unclear. Here, we explored the influences of arsenate and/or phosphate adsorption to fer-rihydrite on active acetate-dependent Fe(III)-reducing and As(V)-reducing microbial communities in a paddy soil, using C-13-acetate-based rRNA-stable isotope probing (SIP). During anaerobic SIP incubations, the arsenate and/or phosphate adsorption to ferrihydrite retarded Fe(III) reduction to various extents, with arsenate alone or combined with phosphate having greater inhibitory effects than phosphate alone. 16S rRNA-based sequencing results revealed that the adsorption of arsenate alone or combined with phosphate markedly enriched several Fe (III) reducers that have also been found to enable arsenate reduction, especially Geobacter genus. This was coincided with the pronounced increment in transcript abundance of arsenate-respiring gene (arrA) induced by the presence of arsenate and further confirmed by cloning and sequencing result which indicated that Geobacter spp. harboring arrA gene were the major As(V) reducers herein. In contrast, the presence of arsenate led to a remarkable decline in other Fe(III) reducers, including Dechloromonas and Thermincola genera, which have rarely been reported to be related to arsenate transformation. Furthermore, all these identified Fe(III) reducers declined significantly by phosphate adsorption alone. Additionally, the adsorption of phosphate to ferrihydrite not only boosted the reduction of adsorbed As(V), but also enriched the respiratory As(V)-reducing microbes containing arrA gene. These findings demonstrate that the adsorption of arsenate and/or phosphate inhibits Fe(III) reduction while promotes As(V) reduction, and shifts the Fe(III)-reducing and As(V)-reducing microbial communities in paddy soils. Overall this study provides novel insights into intricate biogeochemical coupling between iron, arsenic and phosphorus in paddy soils. |
| 源URL | [https://ir.rcees.ac.cn/handle/311016/47285]  |
| 专题 | 生态环境研究中心_城市与区域生态国家重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, Zhejiang Key Lab Urban Environm Proc & Pollut Con, Ningbo Urban Environm Observat & Res Stn, 88 Zhongke Rd, Ningbo 315830, Peoples R China 2.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Urban & Reg Ecol, 18 Shuangqing Rd, Beijing 100085, Peoples R China 3.Univ Chinese Acad Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China 4.Inst Urban Environm, Chinese Acad Sci, Key Lab Urban Environm & Hlth, 1799 Jimei Rd, Xiamen 361021, Peoples R China 5.Capital Normal Univ, Coll Resource Environm & Tourism, 105 North Rd Xisanhuan, Beijing 100048, |
| 推荐引用方式 GB/T 7714 | Ding, Long-Jun,Li, Xiao-Min,Wang, Yi-Fei,et al. Influences of arsenate and/or phosphate adsorption to ferrihydrite on iron-reducing and arsenic-reducing microbial communities in paddy soil revealed by rRNA-C-13-acetate probing, Influences of arsenate and_or phosphate adsorption to ferrihydrite on iron-reducing and arsenic-reducing microbial communities in paddy soil revealed by rRNA-C-13-acetate probing.pdf[J]. SOIL BIOLOGY & BIOCHEMISTRY,2022,169(0):108679. |
| APA | Ding, Long-Jun.,Li, Xiao-Min.,Wang, Yi-Fei.,Luo, Chong-Yi.,Wang, Xue-Dong.,...&Zhu, Yong-Guan.(2022).Influences of arsenate and/or phosphate adsorption to ferrihydrite on iron-reducing and arsenic-reducing microbial communities in paddy soil revealed by rRNA-C-13-acetate probing.SOIL BIOLOGY & BIOCHEMISTRY,169(0),108679. |
| MLA | Ding, Long-Jun,et al."Influences of arsenate and/or phosphate adsorption to ferrihydrite on iron-reducing and arsenic-reducing microbial communities in paddy soil revealed by rRNA-C-13-acetate probing".SOIL BIOLOGY & BIOCHEMISTRY 169.0(2022):108679. |
入库方式： OAI收割
来源：生态环境研究中心
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