时钟基因调节Bactrocera dorsalis中的性费洛蒙生产和雄性交配能力
Xinlian Li1, Long Ye1, Yanling Jiang1
1Department of Entomology, College of Plant Protection, South China Agricultural University, Guangzhou, China.
Insect science
|January 17, 2025
概括
果的交配节奏是由时钟基因控制的. 破坏加密染色体1 (cry1) 和永恒 (tim) 基因会减少性费洛蒙的产生,并损害雄性交配能力.
科学领域:
- 昆虫学 昆虫学是一门学科.
- 时间生物学 时间生物学
- 遗传学 遗传学 是一个
背景情况:
- 许多动物在生理和行为活动中表现出日常节奏.
- 昆虫的交配往往表现出由内部生物钟调节的日常节奏,但遗传机制尚不清楚.
- 果Bactrocera dorsalis表现出每天的交配节奏,这取决于男性直肠性爱激素.
研究的目的:
- 为了调查时钟基因是否调节每日交配节奏和Bactrocera dorsalis.的性激素生产.
- 探索对昆虫繁殖行为的昼夜控制的遗传基础.
主要方法:
- 转录组测序以分析基因表达模式.
- 编辑CRISPR/Cas9基因以淘汰特定的时钟基因 (cry1和tim).
- 定量PCR用于确定不同组织中的基因表达水平.
主要成果:
- 在B. dorsalis雄性中,性费洛蒙的产生是节奏性的,在晚上达到峰值.
- 敲除cry1和tim基因显著降低了性费洛蒙的产生和雄性交配能力.
- cry1表达在头部最高,而tim在头部和直肠都表达很高.
- cry1 (头部) 和tim (头部和直肠) 的节奏表达与性费洛蒙节奏相关.
结论:
- 时钟基因,特别是cry1和tim,在调节每日交配节奏和Bactrocera dorsalis的性激素产生方面发挥着至关重要的作用.
- cry1可能参与中央昼夜控制,而Tim的直肠表情表明外围振荡器.
- 确定了潜在果控制战略的关键遗传标.
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