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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
2005
Source PublicationPLANT AND SOIL
Volume275Issue:2015-01-02Pages:349-359
AbstractPhytostabilization 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.
Department土壤环境科学实验室
KeywordArbuscular Mycorrhiza Glomus Intraradices Medicago Truncatula Phytoremediation Uranium (u)
DOI10.1007/s11104-005-2888-x
WOS Research AreaAgriculture ; Plant Sciences
WOS IDWOS:000233381600031
Citation statistics
Cited Times:21[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.rcees.ac.cn/handle/311016/23340
Collection土壤环境科学实验室
Recommended Citation
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.
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