Entomologia Sinica (2001) 8, 49-54

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Xi-Wu Gao, Xu-Guo Zhou and Bing-Zong Zheng (2001)
A comparison of sensitivity to inhibitor among acetylcholinesterase (AChE) molecular forms of resistant and susceptible strains in Helicoverpa armigera
Entomologia Sinica 8 (1), 49-54
Abstract: The sensitivity of 2.8s and 8.7s acetylcholinesterase (AChE) to eserine sulfate is significantly lower in resistant (R) strain than in susceptible (S) strain in five AChE forms isolated by sucrose gradient centrifugation from cotton bollworm, Helicoverpa armigera. There are 186 and 85 times of difference in heads of adults and 1010 and 105 times of difference in heads of larvae based on a comparison of I50 values for 2.8s and 8.7s forms respectively. The sensitivity of 5.3s form of AChE to eserine sulfate shows 123 times of difference between R and S strains in larvae, however no difference in adults. The above results indicate that insensitive 2.8s, 8.7s and 5.3s forms of AChE may play an important role in the resistance of cotton boll-worm to organophosphate and carbamate insecticides.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website
Database assignments for author(s): Xi-Wu Gao, Xu-Guo Zhou

Research topic(s) for pests/diseases/weeds:
pesticide resistance of pest
molecular biology - genes


Pest and/or beneficial records:

Beneficial Pest/Disease/Weed Crop/Product Country Quarant.


Helicoverpa armigera