分析豆虫中翅膀基因网络组件的重复和可能的子功能化
Omid Saleh Ziabari1,2, Kevin D Deem1, Qingyi Zhong1
1Department of Biology, University of Rochester, Rochester, NY, 14627.
bioRxiv : the preprint server for biology
|July 14, 2025
概括
翼基因调节网络 (wGRN) 中的基因重复和亚功能化可能解释了 pea aphids 翅膀二态的进化. 这项研究研究了在有翅膀和无翅膀的形态中wGRN基因表达和重复.
科学领域:
- 进化发育生物学 进化发育生物学
- 遗传学 遗传学 是一个
- 分子生物学分子生物学
背景情况:
- 了解进化新性的遗传基础,例如特征的获得和丧失,是进化发育生物学的一个关键目标.
- 基因调节网络 (GRNs) 协调发育,并且经常与新表型的演化有关.
- 翅膀基因调节网络 (wGRN) 在 * Drosophila melanogaster * 中得到了充分研究,为研究发育进化提供了一个模型.
研究的目的:
- 为了研究wGRN在豆,Acyrthosiphon pisum*翅膀二重形态的进化中的作用.
- 测试假设,通过表达变化或基因重复接着亚功能化,对wGRN组件的修改是翅膀二态化的基础.
主要方法:
- 在豆虫基因组中的wGRN基因的注释.
- 评估wGRN基因表达在不同雌性体内和形态 (有翅膀/没有翅膀,男性/无性雌性) 的评估.
- 在wGRN中识别和分析基因复制事件.
主要成果:
- 在32个评估的wGRN基因中,只有2个表现出形态偏差表达.
- 三个翅膀基因 (*apterous*, *warts*, *decapentaplegic*) 经历了重复,并列基因表现出不同的表达模式 (性别,形态或特定阶段).
- 特定的复制品 (*wts2*, *dpp3*) 显示出可能与无翼男性发育相关的表达模式.
结论:
- 基因重复和随后的子功能化是推动豆虫翅膀二形态演化的潜在机制,允许通过绕过类限制来适应.
- 这些发现有助于了解发育基因网络如何演变以产生新型表型.
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