Chromium immobilization by extraradical mycelium of arbuscular mycorrhiza contributes to plant chromium tolerance

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 城市与区域生态国家重点实验室

	Chromium immobilization by extraradical mycelium of arbuscular mycorrhiza contributes to plant chromium tolerance
	Wu, Songlin; Zhang, Xin; Chen, Baodong; Wu, Zhaoxiang; Li, Tao; Hu, Yajun; Sun, Yuqing; Wang, Youshan
刊名	ENVIRONMENTAL AND EXPERIMENTAL BOTANY
	2016-02
卷号	122 页码:10-18
关键词	Arbuscular mycorrhiza Cr tolerance Phosphorus Cr immobilization SR mu-XRF
英文摘要	Arbuscular mycorrhizal (AM) fungi, as important plant mutualists, can protect host plants against environmental stresses, including heavy metal contaminations. It is generally accepted that improvement of plant P nutrition by AM symbiosis plays an important role in plant tolerance to heavy metals. In the present study, we tested if exogenous P amendment to the chromium (Cr) contaminated soil could match the positive effects of AM symbiosis on plant Cr tolerance for the highly mycorrhizal dependent plant dandelion (Taraxacum platypecidum Diels.). Experimental results showed that P addition could not enhance plant growth as well as AM symbiosis did. AM fungi could immobilize Cr in mycorrhizal roots besides enhancing plant P acquisition. Cr distribution pattern in principal roots as revealed by synchrotron radiation micro-focused X-ray fluorescence (SR mu-XRF) analysis supported the stabilization of Cr in mycorrrihzal roots. Furthermore, by using a three-compartment cultivation system, we demonstrated that extraradical mycelium (ERM) could take up and transport Cr to mycorrhizal roots, but restrained Cr translocation from roots to shoots, and thus contributed to Cr immobilization in roots and relieved Cr phytotoxicity. (C) 2015 Elsevier B.V. All rights reserved.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/35538]
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	Wu, Songlin,Zhang, Xin,Chen, Baodong,et al. Chromium immobilization by extraradical mycelium of arbuscular mycorrhiza contributes to plant chromium tolerance[J]. ENVIRONMENTAL AND EXPERIMENTAL BOTANY,2016,122:10-18.
APA	Wu, Songlin.,Zhang, Xin.,Chen, Baodong.,Wu, Zhaoxiang.,Li, Tao.,...&Wang, Youshan.(2016).Chromium immobilization by extraradical mycelium of arbuscular mycorrhiza contributes to plant chromium tolerance.ENVIRONMENTAL AND EXPERIMENTAL BOTANY,122,10-18.
MLA	Wu, Songlin,et al."Chromium immobilization by extraradical mycelium of arbuscular mycorrhiza contributes to plant chromium tolerance".ENVIRONMENTAL AND EXPERIMENTAL BOTANY 122(2016):10-18.