数字农科院2.0

Temporal allocation of metabolic tolerance in the body of beet armyworm in response to three gossypol-cotton cultivars

文献类型： 外文期刊

作者： Wu Gang;Guo JianYing;Wan FangHao;Wu Gang;Harris, Marvin K.

作者机构：

关键词： Spodoptera exigua;gossypol;free fatty acid;detoxification enzyme;acetylcholinesterase;total superoxide dismutase

期刊名称： SCIENCE IN CHINA SERIES C-LIFE SCIENCES

ISSN： 1006-9305

年卷期： 2009 年 52 卷 12 期

页码：

收录情况： SCI

摘要： The nutrient composition and enzyme activities in larvae of the beet armyworm, Spodoptera exigua (Hubner), fed on high, medium or low gossypol cotton cultivars were examined at different time intervals. Significantly lower free fatty acid was observed in larvae fed for 6 h on high gossypol 'M9101' compared to larvae fed on the low (ZMS13) and intermediate (HZ401) gossypol cultivars. Significantly higher trypsin activity was observed in larvae fed on high gossypol 'M9101' for 24 h compared to those fed for 1, 4 and 6 h. Significantly higher catalase and total superoxide dismutase enzyme activities were observed in larvae of S. exigua fed on high gossypol 'M9101' compared with low gossypol cultivars 'ZMS13' and 'HZ401' for 1, 4, 6 and 24 h. However, significantly lower carboxylesterase and acetylcholinesterase enzyme activities were found in larvae fed on high gossypol 'M9101' compared with the other cultivars for 1, 4, 6 and 24 h. The interaction between cotton variety and beet armyworm infestation time significantly affected the carboxylesterase enzyme activity in S. exigua. The characterization of the effects of plant allelochemicals on herbivorous larvae is important for aiding understanding of plant-insect interaction as well as in devising solutions to pest problems by breeding plant resistance, identifying metabolic targets for insecticide development, etc.

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