Arbuscular mycorrhizal fungi alleviate arsenic toxicity to Medicago sativa by influencing arsenic speciation and partitioning
文献类型：期刊论文
| 作者 | Chen, Baodong ; Li, Jinglong; Sun, Yuqing; Jiang, Xuelian; Zhang, Xin
|
| 刊名 | ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
 |
| 出版日期 | 2018-08-15 |
| 卷号 | 157页码:235-243 |
| 关键词 | Arbuscular mycorrhiza Medicago sativa P acquisition As speciation As partitioning Gene expression |
| ISSN号 | 0147-6513 |
| 文献子类 | Article |
| 英文摘要 | In a pot experiment, Medicago saliva inoculated with/without arbuscular mycorrhizal (AM) fungus Rhizophagus irregularis were grown in four levels (0, 10, 25, and 75 mg/kg) of arsenic (As)-polluted soil to investigate the influences of AM symbiosis on plant As tolerance. The results showed that mycorrhizal inoculation significantly increased plant biomass, while As addition decreased mycorrhizal colonization and hyphal length density. Mycorrhizal inoculation dramatically improved plant phosphorus (P) nutrition, restricted As uptake and retained more As in roots by upregulating the expression of the AM-induced P transporter gene MsPT4 and the metallothionein gene MsMT2. High soil As content downregulated MsPT4 expression. Dimethylarsenic acid (DMA) was detected only in the shoots of mycorrhizal plants, indicating that AM fungi likely play an essential role in As detoxification by biological methylation. The present investigation allowed deeper insights into the As detoxification mechanisms of AM associations and demonstrated the important role of AM fungi in plant resistance under As-contaminated conditions. |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/40464]  |
| 专题 | 生态环境研究中心_城市与区域生态国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Chen, Baodong,Li, Jinglong,Sun, Yuqing,et al. Arbuscular mycorrhizal fungi alleviate arsenic toxicity to Medicago sativa by influencing arsenic speciation and partitioning[J]. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY,2018,157:235-243. |
| APA | Chen, Baodong,Li, Jinglong,Sun, Yuqing,Jiang, Xuelian,&Zhang, Xin.(2018).Arbuscular mycorrhizal fungi alleviate arsenic toxicity to Medicago sativa by influencing arsenic speciation and partitioning.ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY,157,235-243. |
| MLA | Chen, Baodong,et al."Arbuscular mycorrhizal fungi alleviate arsenic toxicity to Medicago sativa by influencing arsenic speciation and partitioning".ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 157(2018):235-243. |
入库方式： OAI收割
来源：生态环境研究中心
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