2024年5月27日 星期一
VA菌根降低植物对重金属镉的吸收
Vesicular-arbuscular mycorrhizae decrease cadmium uptake by plant
1993年 第2卷 第3期 页码[58-60]    下载全文[0.4MB]  
Abstract

In a pot experiment, vesicular-arbuscular mycorrhizal fungi (VAMF) ( Glomus mosseae) along with various amounts of phosphorus and lime were introduced to an infertile acidic red earth (Typic hapludalf) previously amended with 8mg Cd/kg soil. Dry matter of maize shoot after 60 days growth was collected and Cd as well as P content were determined. Its was found that inoculation of VAMF significantly increased root infection and the highest infection occurred with lower P, lime treatment suggesting VAMF infection was influenced by high P and acidic reaction of the soil. .Shoot Cd content indicated that the highest VAMF infection significantly decreased Ca accumulation in plant shoot. However, Cd accumulation in shoot was relatively unaffected by VAMF in other lower infection treatments. It is suggested from the results that heavy mycorrhizal infection may contribute to restricting Cd uptake by host plants.

关键词VA菌根; ; 植物吸收;
Key wordsvesicular-arbuscular mycorrhizae, cadmium, plant uptake
作者熊礼明
所在单位中国科学院 南京土壤研究所 , 南 京 210008
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