cadmium-induced stress impacting physiological indicators of Pleurisies ostreatus by resistant microbes applied to acid rain

The effects of metal-resistant microbes on P.ostreatus were studied under the complex toxic effect of cadmium and simulated acid rain(pH 4.5)in pot experiment by the measurement of cadmium accumulation,dry weights and lipid peroxidation(MDA).CG3 and FQ2showed strong ability of siderophore production(3.53 ± 0.07 mg/mL)and IAA capacity(34.75 ± 1.32 mg/mL)respectively.The cadmium accumulation in mushroom was positively increased by both of bacteria and acid rain.The content of cadmium with bacteria CG3-treated is higher than bacteria FQ2 under acid rain,while it is opposite under non-acid rain.Microbes increased the growth of mushroom(12.5%~41.1%).Acid rain increased mushroom biomass in the soil contaminated by Cd 1.5mg/kg.MDA increased with the increasing of cadmium in soil.Whether in the environment of acid rain or non-acid rain,MDA of bacteria CG3-treated is less than bacteria FQ2-treated.