烟草抗赤星病诱导的生理生化学及组织病理学研究  

Physiologic biochemical and histopathological study on inducting resistance to brown spot in tobacco

作　　者：杨献营[1] 

机构地区：[1]山东省烟草公司

出　　处：《中国烟草》1996年第1期1-5,共5页China Tobacco

摘　　要：研究结果表明，诱导处理后的叶片组织可溶性还原糖浓度下降，挑战接种后迅速上升；酚类物质的含量随抗性诱导效果的加强而增加；可溶性蛋白质除诱导后第３天增加外，其余时间均下降，同时组织内全氮增加。经电镜扫描及超薄切片观察发现，诱导处理后叶片表面孢子萌发能力降低，气孔中有电子致密物质渗出；在孢子侵入位点，细胞壁变厚，细胞质浓缩，细胞内细胞器基本没有变化。诱导处理可引起组织及细胞学变化。Results indicated that the concentration of soluble reducing sugar in leaf tissue decreased after inducing treatments but increased rapidly after challenging inoculation. The content of phenols increased with the enhancement of the resistanceinducing effect. Soluble proteins decreased most of the time after inducing. but increased on the third day,and total nitrogen of the tissue increased. Through electron microscope scanning and observing superthin slices,the germinating ability of spores on the leaf surface was found decreased following the inducing treatments. and leakage of electron-compact substances was detectable in the stomas. Cell walls thickened and cytoplasm was concentrated around, sporeinvaded spots. However, the organella had no evident variation. The inducing treatments can lead to histological and cytological vicissitudes.

关 键 词：赤星病 诱导抗性 生理 生化 组织病理 烟草 

分 类 号：S435.72[农业科学—农业昆虫与害虫防治]