Arbuscular mycorrhiza enhanced arsenic resistance of both white clover (Trifolium repens Linn.) and ryegrass (Lolium perenne L.) plants in an arsenic-contaminated soil
文献类型： 外文期刊
作者： Dong, Yan 1 ; Zhu, Yong-Guan 1 ; Smith, F. Andrew 2 ; Wang, Youshan 3 ; Chen, Baodong 1 ;
作者机构： 1.Chinese Acad Sci, Ecoenvironm Sci Res Ctr, Dept Soil Environm Sci, Beijing 100085, Peoples R China
2.Univ Adelaide, Sch Earth & Environm Sci, Adelaide, SA 5005, Australia
3.Beijing Acad Agr & Forestry, Inst Plant Nutr & Resources, Beijing 100089, Peoples R China
关键词： arbuscular mycorrhiza; arsenic; clover; ryegrass; compartmented cultivation system
期刊名称：ENVIRONMENTAL POLLUTION （ 影响因子：8.071； 五年影响因子：8.35 ）
ISSN： 0269-7491
年卷期： 2008 年 155 卷 1 期
页码：
收录情况： SCI
摘要： In a compartmented cultivation system. white clover (Trifolium repens Linn.) and ryegrass (Lolium perenne L.). with their roots freely intermingled, or separated by 37 mu m nylon mesh or plastic board. were grown together in an arsenic (As) contaminated soil. The influence of AM inoculation on plant growth, As uptake, phosphorus (P) nutrition, and plant competitions were investigated. Results showed that both plant species highly depended on mycorrhizas for surviving the As contamination. Mycorrhizal inoculation Substantially improved plant P nutrition, and in contrast markedly decreased root to shoot As translocation and shoot As concentrations. It also showed that mycorrhizas affected the competition between the two co-existing plant species, preferentially benefiting the clover plants in term of nutrient acquisition and biomass production. Based on the present study, the role of AM fungi in plant adaptation to As contamination. and their potential use for ecological restoration of As contaminated soils are discussed. (C) 2007 Elsevier Ltd. All rights reserved.
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