2023年5月31日 星期三
链格孢菌毒素对紫茎泽兰的致病机理
The pathogenic mechanism of toxin of Alternaria alternata ( Fr. ) Keissler to Eupatorium adenophorum Spreng.
2001年 第10卷 第3期 页码[47-50]    下载全文[0.7MB]  
摘要

以叶圆片法分析链格孢菌Alternaria alternata ( Fr.) Keissler毒素对紫茎泽兰( Eupatorium adenophorum Spreng.)
叶组织细胞膜透性过氧化物酶( POD) 抗坏血酸过氧化物酶( APX) 和过氧化氢酶( CAT ) 活性以及丙二醛(MDA)

量的影响
, 结果表明, 链格孢菌毒素使紫茎泽兰叶组织细胞膜透性上升, Na +K +渗漏量增加, 膜脂过氧化加强,
MDA
含量上升;链格孢菌毒素处理的紫茎泽兰叶片中 PODAPX CAT 的活性均较对照降低

 

Abstract

Effects of toxin in Alternaria alternata ( Fr.) Keissler on cell membrane permeability, MDA content
and activities of POD, APX and CAT enzymes of
Eupatorium adenophorum Spreng .were conducted by the method of excised leaf test .The results showed that toxin increased permeability of cell membrance, leakage of K+ and Na +, over-oxidation of cell membrane and content of MDA in E .adenophorum leaf tissue, but activities of POD, APX and CAT in treated leaves were lower than those in control leaves .

 

关键词链格孢菌; 毒素; 紫茎泽兰; 致病机理
Key wordsAlternaria alternata ( Fr. ) Keissler; toxin; Eupatorium adenophorum Spreng.; mechanism of pathogenicity
作者万佐玺, 朱晶晶, 强 胜
所在单位南京农业大学杂草研究室, 江苏 南京 210095
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基金项目高等学校博士点专项科研基金( 960205) ; 农业部九五高技术及基础研究项目(02-03-031) 资助