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林业科学 ›› 2023, Vol. 59 ›› Issue (2): 112-120.doi: 10.11707/j.1001-7488.LYKX20210691

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白蜡窄吉丁成虫对短时高温的生理响应

党英侨(),王小艺*,张彦龙,魏可,曹亮明   

  1. 中国林业科学研究院森林生态环境与自然保护研究所 国家林业和草原局森林保护学重点实验室 北京 100091
  • 收稿日期:2021-09-13 出版日期:2023-02-25 发布日期:2023-04-27
  • 通讯作者: 王小艺 E-mail:yqdang126@126.com
  • 基金资助:
    国家自然科学基金项目(31971666);中国林科院基本科研业务费专项(CAFYBB2017ZF002)

Physiological Responses of Agrilus planipennis Adults to Short-Time High-Temperature Conditions

Yingqiao Dang(),Xiaoyi Wang*,Yanlong Zhang,Ke Wei,Liangming Cao   

  1. Key Laboratory of Forest Protection of National Forestry and Grassland Administration Ecology and Nature Conservation Institute, Chinese Academy of Forestry Beijing 100091
  • Received:2021-09-13 Online:2023-02-25 Published:2023-04-27
  • Contact: Xiaoyi Wang E-mail:yqdang126@126.com

摘要:

目的: 从生理水平上探究白蜡窄吉丁成虫温度耐受性形成的原因,为揭示昆虫环境抗逆性形成机制提供参考。方法: 以25 ℃为对照,室内设置温度分别为30、33、37和41 ℃的高温条件,分别于4、8和12 h后收集放置于上述不同条件下的白蜡窄吉丁雌雄成虫。测定各处理样品的含水量、含脂量、糖原、葡萄糖、海藻糖和蛋白质含量的变化。结果: 随着温度升高和高温持续时间延长,白蜡窄吉丁雌雄成虫体内水分和脂类含量都大致呈下降趋势。温度越高时,雌雄虫体内糖原含量越高;而葡萄糖和海藻糖含量则先升高后降低,于33~37 ℃时达到最大值。随着雌雄虫经历高温持续时间的延长,其体内糖原、葡萄糖和海藻糖含量都大致呈增长趋势。雌雄虫体内蛋白质含量随温度升高波动性增加,而随高温持续时间延长表现出逐渐下降趋势。白蜡窄吉丁雄虫体内水分、脂类和糖原含量明显高于雌虫,而海藻糖和蛋白质含量与雌虫相比则相对较低。结论: 短时高温条件下,白蜡窄吉丁雌雄成虫体内含脂量、多种糖类和蛋白质含量均在一定程度上发生明显变化,水分和脂类含量受温度及其持续时间影响较小,糖类和蛋白质含量则受影响相对较大。糖类和蛋白质等多种抗逆物质都在白蜡窄吉丁成虫抵御高温胁迫时发挥了重要的调节作用。

关键词: 白蜡窄吉丁, 耐热性, 短时高温胁迫, 生理生化指标

Abstract:

Objective: This study aims to explore the cause of heat tolerance formation in Agrilus planipennis (emerald ash borer, EAB) adults from the physiological level, so as to provide guidance for revealing the formation mechanism of insect resistance to environmental stress. Method: EAB male and female adults were incubated in different high temperature (30, 33, 37 and 41 ℃) and 25 ℃ (served as the control) conditions for 4, 8 and 12 h, respectively, and the insects were collected to measure the water content, fat content, and glycogen, glucose, trehalose, and protein content. Result: With the increase of temperature and the extension of the duration of high temperature, the contents of water and fat in both male and female adults of EAB showed a downward trend. With temperature increasing, the glycogen content was increased, while the contents of glucose and trehalose increased first and then decreased, reaching the highest level at 33?37 ℃. The contents of glycogen, glucose and trehalose in the male and female adults all generally showed an upward trend with increasing time under high temperature. The protein content in the male and female adults increased with fluctuation with the increase of temperature, but gradually decreased with the extension of high temperature duration. The contents of water, fat and glycogen in EAB male adults were significantly higher than those in the female adults, while the contents of trehalose and protein were relatively lower than those in female adults. Conclusion: Under short-time high-temperature conditions, the fat content, and various sugars and protein contents of EAB adults have changed obviously to some extent. The water and fat contents are less affected by temperature and the treatment duration, while the sugar and protein contents are significantly influenced by temperature and the treatment duration. Many stress-resistant substances, such as sugar and protein, play an important role in regulating the resistance of EAB adults against high temperature conditions.

Key words: emerald ash borer, heat tolerance, high-temperature short-time stress, physiological and biochemical indices

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