摘要
中科6号(2％氨基寡糖素)处理黄瓜植株叶片,5 d后接种白粉菌Sphaerotheca fuliginea(Schlecht.)Poll.,可诱导黄瓜Cucumis sativus产生对白粉病的抗病性,寄主细胞对病原菌的侵入产生了防卫反应结构和物质以及过敏性坏死反应。表现为寄主细胞壁加厚,染色加深,寄主细胞壁下产生多层次结构的乳突,在寄主细胞壁与质膜之间有黑色物质沉积;吸器外质膜皱褶,染色加深,吸器外基质中出现染色加深的颗粒状电子沉积物;寄主细胞质紊乱,细胞器解体,整个寄主细胞解体、坏死。
Five days after being treated with amino oligosaccharin, the cucumber leaves were inoculated with cucumber powdery mildew, Sphaerotheca fuliginea (Schlecht. ) Poll. , to induce the cucumber resistance to powdery mildew. The host cells produced defense structures and material related to infection and hypersensitive response. The host cell wall was thickened and deeply stained, several layers of papilla structure produced under the cell wall, dark material deposited between the cell wall and plasmalemma; extrahaustorial plasmalemma deeply stained and extrahaustorial matrix appositions deposited with large amount of electron-dense material; cytoplasm disordered, host organelles disintegrated and finally the whole host cell disintegrated and necrotized.
出处
《植物病理学报》
CAS
CSCD
北大核心
2004年第6期525-530,共6页
Acta Phytopathologica Sinica
基金
国家高技术研究发展计划项目(2001AA625010)
中科院知识创新工程重要方向项目(KSCX2-SW-301-03)
关键词
黄瓜
白粉病菌
寡聚糖
诱导抗病性
超微结构
cucumber
Sphaerotheca fuliginea
oligosaccharide
induced resistance
ultrastructure
