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Updated: Jul 15, 2025

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在Nasonia vitripennis中对光诱导基因的转录组分析:对循环光引入路径的可能影响

Yifan Wang¹, Leo W Beukeboom¹, Bregje Wertheim¹

¹Groningen Institute for Evolutionary Life Sciences, University of Groningen, 9712 CP Groningen, The Netherlands.

|September 28, 2023

概括

这项研究揭示了在黄蜂中为昼夜光携带的CRYPTOCHROME1独立途径. 基于素的光接收和神经传递会重置昆虫的昼夜时钟,从而提供了对膜的光感应的见解.

科学领域:

时间生物学时间生物学
昆虫生理学昆虫生理学
分子生物学分子生物学

背景情况:

循环节流动使内部生物节奏与环境的光暗周期同步,这对资源利用至关重要.
在昆虫中,对日间活动的光感应涉及素和CRYPTOCHROME1 (CRY1),但缺乏光敏感CRY1的物种的机制是未知的.

研究的目的:

为了研究*Nasonia vitripennis*中昼夜光携带的遗传调节,这种物种可能缺乏对光敏感的CRY1.1.
为了阐明一个独立于CRYPTOCHROME1的光传导级联以重置昼夜时钟.

主要方法:

用RNA测序来分析主观夜间光脉冲后,在*Nasonia vitripennis*头部中,光诱导的基因表达变化.
同表达,功能注释和转录因子结合动机分析被用来确定参与光响应的分子途径.

主要成果:

最大基因诱导 (1432个基因) 发生在光刺激后2小时,包括素基因 * opblue * 和核心时钟基因 * cry2 * 和 * npas2 *.
途径分析表明,光激活了谷氨基基和GABA活性神经递质,涉及CREB和AP-1转录因子.
观察到*cry2*和*npas2*的基因诱导,这表明它们在光重置途径中的作用.

结论:

在 *Nasonia vitripennis* 中,循环光学携带可能利用与哺乳动物相似的途径,涉及素光感应和神经传递.
建议采用膜的昼夜光调整模型,强调基于素的光接收,谷氨酸性神经传递和*cry2*和*npas2*的诱导.

关键词:

在RNAseqqq中使用.生物钟是我们的生物钟.光敏度对于光的敏感度一个光感受器.转导途径的转导路径

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