一个超共生系统的共系:内共生细菌 (Gammaproteobacteria),虫 (Insecta:Phthiraptera) 和鸟类 (Passeriformes)
Alexandra A Grossi1, Chunpo Tian2, Mengjiao Ren3
1Guangdong Key Laboratory of Animal Conservation and Resource Utilization, Guangdong Public Library of Wild Animal Conservation and Utilization, Institute of Zoology, Guangdong Academy of Sciences, 105 Xingang West Road, Haizhu District, Guangzhou 510260, Guangdong Province, China.
Molecular phylogenetics and evolution
|November 1, 2023
概括
虫的进化历史,它们的细菌内共生体和鸟类宿主是交织在一起的. 虽然子和细菌显示出相关的进化,但鸟宿主和子的基因呈现出混合的共基因信号.
科学领域:
- * 生态学 * 生态学
- * 进化生物学 进化生物学
- * 微生物学 微生物学
背景情况:
- * 虫 (Phthiraptera) 是鸟类的永久性外寄生虫.
- *这些子含有内共生细菌,主要是Sodalis结盟的细菌.
- *宿主及其共生体之间的共同进化动态为宿主-寄生虫和宿主-共生体关系提供了洞察力.
研究的目的:
- * 调查虫 (吉马拉塞拉属),它们的Sodalis结盟的内共生细菌,以及它们的鸟类宿主之间的共生关系.
- * 确定这三个群体的进化历史是否一致.
- * 评估宿主交换事件对细菌共生体类型的影响.
主要方法:
- *从中国南部收集虫 (Guimaraesiella) 和它们的鸟类宿主.
- * 对,内共生细菌和宿主鸟类的分子遗传学分析.
- *使用基于事件的 (简) 和基于距离的 (帕拉菲特) 方法进行基分析.
主要成果:
- *对对进行的比较表明,子及其内共生体的进化历史并不独立.
- *同样,鸟类及其内共生体的进化历史显示出显著的一致性.
- * 虫和鸟类之间的共生遗传分析产生了不同的结果:ParaFit表明了依赖的历史,而Jane则表明除了偶然之外没有显著的一致性.
结论:
- * 虫和它们的细菌内共生体的进化轨迹有着显著的联系.
- * 鸟类宿主和内生生体的基因也在很大程度上是一致的,这表明共同物种化.
- * 细菌共生生物的基因表现出强大的宿主切换事件,表明稳定的内生生物的协会.
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