CO_2气调胁迫对药材甲能源物质的影响  

The effect of CO_2-enriched atmosphere exposure on the energy sources in drugstore beetle Stegobium paniceum

作　　者：曹宇[1,2] 杨文佳[1] 孟永禄[1] 熊正利 冉光梅 李灿[1] 

机构地区：[1]贵阳学院生物与环境工程学院,有害生物控制与资源利用贵州省普通高校特色重点实验室,贵阳550005 [2]贵州大学昆虫研究所,贵州山地农业病虫害重点实验室,贵阳550025

出　　处：《植物保护学报》2016年第3期405-411,共7页Journal of Plant Protection

基　　金：国家自然科学基金(31460476);国家级大学生创新创业训练计划项目(201510976005);贵州省科技厅重点项目(黔科合JZ字[2014]2002号)

摘　　要：为明确CO_2气调胁迫对药材甲能源物质的影响,采用不同CO_2浓度(10%、30%、50%、70%和90%)对其分别胁迫2、4、6、8 h后,测定其体内多糖、可溶性蛋白质及脂肪等能源物质的含量,并计算其利用率,探讨药材甲对气调胁迫的生理生化响应。结果表明,相较于对照,随胁迫时间的延长及CO_2浓度的升高,药材甲能源物质的含量均逐渐减少,利用率则逐渐增加。10%CO_2浓度胁迫2 h下,单头药材甲多糖、蛋白质及脂肪的含量均最高,分别为13.94、162.87和35.14μg;其利用率最低,分别为4.85%、2.04%和11.02%。90%CO_2浓度胁迫8 h下,其含量最低,分别为11.02、145.69和19.08μg;利用率最高,分别为24.80%、12.37%和51.68%。不同处理下,药材甲对3种能源物质的利用率均差异显著,为脂肪>多糖>可溶性蛋白质。表明CO_2浓度和胁迫时间是导致药材甲能源物质消耗的重要因素,而其对不同能源物质不同的利用率,则可能与昆虫抗气性的形成密切相关。In order to clarify the effect of CO_2-enriched atmosphere exposure on the consumption of energy sources in drugstore beetle Stegobium paniceum,the content of polysaccharides,soluble protein and lipid in S. paniceum were determined,after they were exposed to different CO_2-enriched atmospheres（ 10%,30%,50%,70% and 90%） for 2,4,6,and 8 h. Their utilization rates were also calculated to explore the response of insects to CO_2 exposure from physiological and biochemical levels. The results showed that the contents of polysaccharides,soluble protein and lipid decreased,but their utilization rates increased,with increasing CO_2 concentration under the same exposure time or with the extension of exposure time under the same CO_2 concentration,compared to the controls. The highest content and lowest utilization rate of energy source were in the treatment of 2 h exposure under 10% CO_2,and the content of polysaccharides,soluble protein and lipid were 13. 94,162. 87 and 35. 14 μg / insect,with their utilization rates of 4. 85%,2. 04% and 11. 02%,respectively; the lowest content and highest utilization rate of energy source were in the treatment of 8 h exposure under 90% CO_2,with the contentsof 11. 02, 145. 69, 19. 08 μg / insect and utilization rates of 24. 80%, 12. 37% and 51. 68%,respectively. In addition,there was significant difference in the utilization rates of the three kinds of energy sources,and the order was lipid polysaccharides soluble protein under all the CO_2 exposure treatments. Therefore,the CO_2 concentration and exposure time were important factors causing energy sources consumption of S. paniceum,and the significantly different utilization rates of different energy sources in insects under different CO_2 exposure treatments probably had some associations with their resistance development to CO_2.

关 键 词：药材甲 气调 能源物质 多糖 可溶性蛋白质 脂肪 

分 类 号：S379.5[农业科学—农产品加工]