文档介绍：
Investigation of Carboxylesterase Activities of B biotype
Bemisia tabaci(Homoptera: Aleyrodidae) induced by 56
plant species#
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XU Qiyun1, CHAI Fanghua2, AN Xincheng1, HAN Shichou1**
(1. Guangdong Entomological Institute, Guangzhou 510260, China;
2. South China Botanical Garden, Chinese Academy of Science, Guangzhou 510520, China)
Abstract: B-biotype Bemisia tabaci have documented very strong ability on host utility and resulted
in quite wide host-range, which was regarded probably due to effective detoxified enzymes system
including varied enzyme type, and carboxylesterase (CarE) might be considerable among them. In this
case, the carboxylesterase activity of B-type whitefly after 48 h host transferring were tested on 56
plant species. The results indicated that OD values of CarE varied significantly, and times
difference between lowest and highest record. It was as expected that the gradient of OD value showed
gradual and smooth, and host plants showed little obvious relationship between species and enzyme
activity. However, data indicated that OD values of B-type whitefly from 56 plants closed to normal
distribution, which might imply the exist of CarE mean activity mean and still not clear about
mechanism and significance. This conclusion need more evidence to extend on other detoxified
enzymes.
Key words: B-biotype Bemisa babaci;