HT-TOXIN PRODUCED BY EXSEROHILUM TURCICUM AND SUPEROXIDATION OF MEMBRANE LIPID IN CORN CELL
- VernacularTitle:玉米大斑病菌HT-毒素与玉米细胞的膜脂过氧化研究
- Author:
Jingao DONG
;
Jianmin HAN
;
Lihui ZHANG
;
- Publication Type:Journal Article
- Keywords:
Exserohilum turcicum,HT\|toxin,Superoxidation of membrane lipid,MDA,SOD,POD
- From:
Microbiology
1992;0(05):-
- CountryChina
- Language:Chinese
-
Abstract:
Superoxidation of membrane lipid in corn leaf cells has been studied by researching the relationship between membrane permeability,the content of MDA,and the activity of POD and SOD under HT\|toxin stress.The experimental results showed that the content of MDA ascended,the POD activity was stimulated and SOD activity was inhibited in compatible combination,but POD activity was inhibited in incompatible combination.HT\|toxin strongly destroyed the permeability of cell membrane of corn,and there were positive correlation between toxin effect and toxin concentration and time exposure to toxin.It was conclusion that there may be toxin\|binding site in both resistant and susceptible cell membrane,and the difference in sensitivity of resistant and susceptible cells to toxin may result from their active oxygen metabolism.
