Arbuscular mycorrhiza enhanced arsenic resistance of both white clover (Trifolium repens Linn.) and ryegrass (Lolium perenne L.) plants in an arsenic-contaminated soil

被引：90

作者：

Dong, Yan ^{[1
]}

Zhu, Yong-Guan ^{[1
]}

Smith, F. Andrew ^{[2
]}

Wang, Youshan ^{[3
]}

Chen, Baodong ^{[1
]}

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

来源：

ENVIRONMENTAL POLLUTION | 2008年 / 155卷 / 01期

基金：

中国国家自然科学基金;

关键词：

arbuscular mycorrhiza; arsenic; clover; ryegrass; compartmented cultivation system;

D O I：

10.1016/j.envpol.2007.10.023

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

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.

引用

页码：174 / 181

页数：8

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