%0 Journal Article
%T INFECTION BEHAVIOR OF ENTOMOPATHOGENIC FUNGUS ASCHERSONIA ALEYRODIS ON BEMISIA TABACI<br>昆虫病原真菌粉虱座壳孢对烟粉虱侵染行为的初步研究
%A QIU Jun-Zhi
%A HUANG Zhi-Peng PAN Jie-Ru XIE Xue-Qin ZHU Yan-Ping ZHANG Shao-Sheng GUAN Xiong
%A <br>邱君志
%A 黄志鹏
%A 潘洁茹
%A 谢雪钦
%A 朱炎平
%A 张绍升
%A 关雄
%J 菌物学报
%D 2004
%I 
%X Aschersonia aleyrodis is an important insect pathogen, which can be used as biocontrol agent against worldwide sweetpotato whitefly, Bemisia tabaci. Investigation of infection characteristic of the fungus revealed that first to third instar nymphs were most susceptible and the infection rate of second instar nymphs could reach 98%. Infection rate increased with prolongation of treatment duration or increase in concentration of conidia. Infected whitefly nymphs usually died in the following stage after treatments. Scanning electron microscopy and light microscopy were employed to investigate the infection process of A. aleyrodis on the pest. The germ tube of conidia might penetrate directly into the cuticle or by means of an appressorium, with preference of intersegmental membranes as the site of infection,and mycelial production then followed. Mycelia protruded from margins of cadavers and the conidia could infect other new members if humidity was high enough.
%K Insect fungal pathogen
%K whitefly larva
%K SEM
%K infection process<br>昆虫真菌病
%K 粉虱幼虫
%K 扫描电镜
%K 侵染过程
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=90BA3D13E7F3BC869AC96FB3DA594E3FE34FBF7B8BC0E591&jid=CA9F815FCB0F62294C4266BB6F902ACB&aid=F5DAE3AC003389F7&yid=D0E58B75BFD8E51C&vid=EA389574707BDED3&iid=CA4FD0336C81A37A&sid=EDA22B444205D04A&eid=CDEBD1ACE0A4C1C1&journal_id=1672-6472&journal_name=菌物学报&referenced_num=14&reference_num=31