| 根系分泌物对砷酸还原菌TS28活性及土壤中酶活性的影响 |
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| 引用本文： | 郭平,徐富凯,刘亦博,李美璇,封保根,陈薇薇. 根系分泌物对砷酸还原菌TS28活性及土壤中酶活性的影响[J]. 吉林大学学报(理学版), 2021, 59(1): 183-189. DOI: 10.13413/j.cnki.jdxblxb.2020166 |
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| 作者姓名： | 郭平 徐富凯 刘亦博 李美璇 封保根 陈薇薇 |
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| 作者单位： | 1. 吉林大学 新能源与环境学院， 地下水资源与环境教育部重点实验室， 长春 130012；2. 吉林省水资源与水环境重点实验室， 长春 130021；3. 中国长江三峡集团有限公司 流域枢纽运行管理中心， 湖北 宜昌 443000) |
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| 摘 要： | 以砷酸还原菌(Stenotrophomonas sp.TS28)以及油菜、小麦和小白菜的根系分泌物为实验对象,研究根系分泌物对砷(As)污染土壤中砷酸还原菌TS28存活、As还原能力的影响以及土壤中酶活性的变化规律.结果表明:土壤中的As(V)抑制了TS28的活性,添加根系分泌物刺激了TS28的活性,增加了TS28的存...
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| 关 键 词： | 根系分泌物 土壤 砷酸还原菌 存活 还原 酶活性 |
| 收稿时间： | 2020-06-10 |
Effects of Root Exudates on Activities of Arsenic-Reducing Bacteria TS28 and Enzyme Activities in Soil #br# |
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| GUO Ping,XU Fukai,LIU Yibo,LI Meixuan,FENG Baogen,CHEN Weiwei. Effects of Root Exudates on Activities of Arsenic-Reducing Bacteria TS28 and Enzyme Activities in Soil #br#[J]. Journal of Jilin University: Sci Ed, 2021, 59(1): 183-189. DOI: 10.13413/j.cnki.jdxblxb.2020166 |
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| Authors: | GUO Ping XU Fukai LIU Yibo LI Meixuan FENG Baogen CHEN Weiwei |
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| Affiliation: | 1. Key Laboratory of Groundwater Resources and Environment of the Ministry of Education, College of New Energy and Environment, Jilin University, Changchun 130012, China; 2. Jilin Provincial Key Laboratory of Water Resources and Environment, Jilin University, Changchun 130021, China; 3. River Basin Hub Administration, China Three Gorges Corporation, Yichang 443000, Hubei Province, China)
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| Abstract: | Arsenic-reducing bacteria (Stenotrophomonas sp.TS28) and root exudates of rape, wheat and pakchoi were used as experimental objects to study the effects of root exudates on the survival and arsenic reduction ability of arsenic-reducing bacteria TS28 and soil enzyme activities in arsenic contaminated soil. The results show that As(Ⅴ) in soil inhibits the survival of TS28, the addition of root exudates stimulates the survival of TS28, and increases the survival number and time of TS28. Root exudates can affect the reduction ability of TS28, which is related to its source. The root exudates of wheat have the best effect on improving the arsenic reduction ability of TS28, and the reduction amount of As(Ⅴ) is increased by 45.86% within 10 d. TS28 decreases the activities of sucrase and dehydrogenase in arsenic contaminated soil, the addition of root exudates increases the activities of urease, acid phosphatase, sucrase and dehydrogenase, among which rape root exudates have the best effect. |
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| Keywords: | root exudate soil arsenic-reducing bacteria survival reduction enzyme activity |
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