接种丛枝菌根（AM）真菌对植物DBP污染的影响

在温室进行盆栽试验，以DBP(邻苯二甲酸二丁酯)为研究对象，以豇豆(Pigna sinensis)为宿主植物，分别接种AM真菌Acaulospora lavis(光壁无梗球囊霉)和Glomus caledonium(苏格兰球囊霉)，观察接种AM真菌对植物DBP污染变化的影响．结果表明，接种AM真菌明显控制了植物对DBP的吸收，降低了植物体内DBP的浓度．在低浓度DBP(4mg.kg^-1)土壤处理时，接种Acaulospora lavis和Glomus caledo-nium分别使植物体内DBP浓度比不接种(CK)最大下降32．7％和21．7％；高浓度DBP(100mg.kg^-1)土壤处理时，分别比CK最大下降30．5％和30．0％．接种AM真菌还抑制了DBP由植物根系向地上部的迁移，对减轻植物遭受DBP污染起了一定的作用．

Effect of inoculation with AM fungi on DBP-pollution of plant

In greenhouse, taking DBP as the object and taking Pigna sinensis inoculated respectively with AM fungi Aculospora lavis and Glomus caledonium as the host plants, a pot experiment was carried out to study the effect of inoculated AM fungi on the dynamics of plant DBP-pollution. The experiment lasted 60d. The results indicated that inoculation with AM fungi could restrain plant from absorbing DBP. Although AM fungi were affected by DBP, they played important roles in decreasing the DBP uptake by plant and the translocation of DBP from roots to aboveground part of plant. After inoculation with AM fungi, the final concentrations of DBP in plants inoculated respectively with Aculospora lavis and Glomus caledonium were decreased, to significant level (P < 0.01) with maximum decrease ratios reaching up to 32.7% and 21.7%, respectively when soil-applied DBP concentration was 4 mg.kg-1, and to significant level (P < 0.05) with maximum decrease ratios reaching up to 30.5% and 30.0%, respectively when soil-applied DBP concentration was 100 mg.kg-1. The translocation of DBP from roots to aboveground part of plant was also inhibited by inoculated AM fungi. Therefore, AM was helpful to decrease plant DBP-pollution.