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| 白僵菌感染桑天牛幼虫致病过程的显微观察 | |
| 引用本文： | 王晓红,黄大庄,杨忠岐,李会平,郑建伟.白僵菌感染桑天牛幼虫致病过程的显微观察[J].蚕业科学,2009,35(2). |
| 作者姓名： | 王晓红 黄大庄 杨忠岐 李会平 郑建伟 |
| 作者单位： | 1. 河北农业大学,河北保定,071000;中国林业科学研究院森林生态环境与保护研究所,北京,100091 2. 河北农业大学,河北保定,071000 3. 中国林业科学研究院森林生态环境与保护研究所,北京,100091 |
| 摘 要： | 为了探讨白僵菌(Beauveria bassian)与寄主桑天牛(Apriona germari)间的相互作用方式及关系,采用扫描电镜观察了白僵菌分生孢子在桑天牛幼虫体表的侵染及穿透过程。结果表明,白僵菌分生孢子接种后8 h就可以附着于桑天牛幼虫体壁,12 h时可见孢子萌发产生芽管和附着胞,16 h即可穿透幼虫体壁;桑天牛幼虫体壁不同结构区影响白僵菌分生孢子萌发速度、附着胞形成以及芽管长度,与幼虫体壁的其它结构区相比,在幼虫体表节间膜处的白僵菌分生孢子萌发早,生长更快,并且孢子不会从幼虫体表的气孔侵入;已死亡虫体的表皮、气门均发生畸变。 |
| 关 键 词： | 白僵菌 桑天牛幼虫 侵染过程 扫描电镜 |
Microscopic Observations of Infection Process of Beauveria bassian on the Cuticle of Apriona germari Larvae |
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| WANG Xiao-Hong,HUANG Da-Zhuang,YANG Zhong-Qi,LI Hui-Ping,ZHENG Jian-Wei.Microscopic Observations of Infection Process of Beauveria bassian on the Cuticle of Apriona germari Larvae[J].Acta Sericologica Sinica,2009,35(2). | |
| Authors: | WANG Xiao-Hong HUANG Da-Zhuang YANG Zhong-Qi LI Hui-Ping ZHENG Jian-Wei |
| Institution: | WANG Xiao-Hong1,2 HUANG Da-Zhuang1 YANG Zhong-Qi2LI Hui-Ping1 ZHENG Jian-Wei 1 (1Hebei Agricultural University,Baoding Hebei 071000,China,2Research Institute of Forest Ecology,Environment , Protection,Chinese Academy of Forestry,Beijing 100091,China) |
| Abstract: | The infection and penetration process of Apriona germari by entomopathogenic fungi Beauveria bassian was studied using scanning electron microscopy.It was found that conidia of Beauveria.bassian attached to the cuticle of Apriona germari larvae after 8 h,and the germ tube and appressoria were formed after 12 h,penetrated through the cuticle after 16 h.Surface topography of the host had influence on infection speed,appressoria production and the length of germ tube.Apriona germari conidia on segmacoria germi... |
| Keywords: | Beauveria bassian Apriona germari larvae Infection process Scanning electron microscopy |
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