Effects of the mycorrhizal fungus Glomus intraradices on uranium uptake and accumulation by Medicago truncatula L. from uranium-contaminated soil

doi:10.1007/s11104-005-2888-x

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 土壤环境科学实验室

	Effects of the mycorrhizal fungus Glomus intraradices on uranium uptake and accumulation by Medicago truncatula L. from uranium-contaminated soil
	Chen, BD; Jakobsen, I; Roos, P; Zhu, YG
刊名	PLANT AND SOIL
	2005
卷号	275 期号:2015-01-02 页码:349-359
关键词	Arbuscular Mycorrhiza Glomus Intraradices Medicago Truncatula Phytoremediation Uranium (u)
DOI	10.1007/s11104-005-2888-x
英文摘要	Phytostabilization strategies may be suitable to reduce the dispersion of uranium (U) and the overall environmental risks of U-contaminated soils. The role of Glomus intraradices, an arbuscular mycorrhizal (AM) fungus, in such phytostabilization of U was investigated with a compartmented plant cultivation system facilitating the specific measurement of U uptake by roots, AM roots and extraradical hyphae of AM fungi and the measurement of U partitioning between root and shoot. A soil-filled plastic pot constituted the main root compartment (C-A) which contained a plastic vial filled with U-contaminated soil amended with 0, 50 or 200 mg KH2PO4-P kg(-1) soil (C-B). The vial was sealed by coarse or fine nylon mesh, permitting the penetration of both roots and hyphae or of just hyphae. Medicago truncatula plants grown in C-A were inoculated with G. intraradices or remained uninoculated. Dry weight of shoots and roots in C-A was significantly increased by G. intraradices, but was unaffected by mesh size or by P application in C-B. The P amendments decreased root colonization in C-B, and increased P content and dry weight of those roots. Glomus intraradices increased root U concentration and content in C-A, but decreased shoot U concentrations. Root U concentrations and contents were significantly higher when only hyphae could access U inside C-B than when roots could also directly access this U pool. The proportion of plant U content partitioned to shoots was decreased by root exclusion from C-B and by mycorrhizas (M) in the order: no M, roots in C-B > no M, no roots in C-B > M, roots in C-B > M, no roots in C-B. Such mycorrhiza-induced retention of U in plant roots may contribute to the phytostabilization of U contaminated environments.
学科主题	Agriculture ; Plant Sciences
WOS研究方向	Agriculture ; Plant Sciences
WOS记录号	WOS:000233381600031
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/23340]
专题	生态环境研究中心_土壤环境科学实验室
推荐引用方式 GB/T 7714	Chen, BD,Jakobsen, I,Roos, P,et al. Effects of the mycorrhizal fungus Glomus intraradices on uranium uptake and accumulation by Medicago truncatula L. from uranium-contaminated soil[J]. PLANT AND SOIL,2005,275(2015-01-02):349-359.
APA	Chen, BD,Jakobsen, I,Roos, P,&Zhu, YG.(2005).Effects of the mycorrhizal fungus Glomus intraradices on uranium uptake and accumulation by Medicago truncatula L. from uranium-contaminated soil.PLANT AND SOIL,275(2015-01-02),349-359.
MLA	Chen, BD,et al."Effects of the mycorrhizal fungus Glomus intraradices on uranium uptake and accumulation by Medicago truncatula L. from uranium-contaminated soil".PLANT AND SOIL 275.2015-01-02(2005):349-359.