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泛基因组学将Boll Weevil分歧与古代中美洲棉花种植联系起来

Zachary P Cohen¹, Lindsey C Perkin¹, Tyler J Raszick²

¹USDA, Agricultural Research Service, Southern Plains Agricultural Research Center, Insect Control and Cotton Disease Research Unit, College Station, Texas, USA.

Molecular ecology resources

|January 22, 2025

概括

基因组分析揭示了破坏性虫 (Anthonomus grandis grandis) 和无害的 thurberia 虫 (Anthonomus grandis thurberiae) 之间的遗传分歧,与古代棉花种植相吻合.

科学领域:

基因组学就是基因组学.
进化生物学进化生物学
昆虫学昆虫学是一门学科.

背景情况:

虫 (Anthonomus grandis grandis) 是种植棉花 (Gossypium hirsutum) 的主要害虫,而虫 (Anthonomus grandis thurberiae) 是一种在野生棉花 (Gossypium thurberi) 上发现的非害虫亚种.
以前的研究表明,地理隔离是它们独特进化路径的主要驱动因素.

研究的目的:

为了研究波尔虫和图尔贝里亚虫亚种之间的分歧的遗传驱动因素.
重建进化历史,并确定与各自宿主相关的遗传适应.

主要方法:

使用比较基因组学,种群遗传学和泛基因组分析来识别遗传多态.
分析大小多态,包括结构变异,用于推断人口史.
在亚种中识别诊断位点和基因进行选择.

主要成果:

确定了39,310个诊断位点,区分了亚种.
人口重建表明,在现在之前的3320-16,300年之间发生了分裂,这与早期的棉花种植相吻合.
多态性丰富于与繁殖,调节和新陈代谢相关的基因,表明适应宿主植物.

结论:

一系列因素,包括遗传漂移和与宿主植物关联相关的选择,可能导致了分歧.
泛基因组学和比较框架对于重建人口结构和发现遗传新奇性是有效的.
这些发现强调了基因组方法在理解害虫演变和适应方面的有用性.

关键词:

波尔虫 (英语:Boll weevil) 是一种小虫子.棉花棉花是一种棉花.宿主植物的宿主植物是什么泛基因组学是一门学科.结构上的差异.图尔贝利亚虫 (Thurberia weevil) 是一种小虫子.

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