硒元素对平菇菌丝体GSH-Px、SOD及MDA的影响

Influence of selenium on activity of GSH- Px, SOD and MDA in mycelium of Pleurotus ostreatus

于培养基中加入一定量的亚硒酸钠溶液 ,分别测定了 2个品种平菇菌丝体内GSH Px、SOD活性及MDA含量。结果表明 :3 0、60mg/L组菌丝体内GSH Px、SOD活性极显著升高 (P <0 .0 1 )而MDA含量明显降低 (P <0 .0 5 ) ,随着硒水平的升高 ,GSH Px、SOD活性呈下降趋势而MDA含量则显著升高 (P <0 .0 5 )。因此 ,在培养富硒平菇菌丝体时应适当考虑培养基的硒浓度。

Activity of GSH-Px,SOD and content of MDA was examined in the mycelium of two varieties of Pleurotus ostreatus after adding selenium. The results showed that the activity of GSH-Px and SOD obviously increased(P<0.01)and the content of MDA reduced(P<0.05)in two group of 30 mg/L,60 mg/L of selenium. The activity of GSH-Px and SOD submited the tendency of drop and the content of MDA obviously increased(P<0.05)with the promoting of selenium. The consistence of selenium should be considered in bringing up the mycelium of Pleurotus ostreatus in selenium enrichment.