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随着采样增加的基因组数据探索,为蝶和蝶 (Lepidoptera) 的更高层次关系提供了新的见解
Qi Chen1, Min Deng2, Xuan Dai3
1Yuelushan Laboratory, College of Plant Protection, Hunan Provincial Key Laboratory for Biology and Control of Plant Diseases and Insect Pests, Hunan Agricultural University, Changsha 410128, Hunan, China; Tropical Biodiversity and Bioresource Utilization Laboratory, College of Science, Qiongtai Normal University, Haikou 571127, Hainan, China.
Molecular phylogenetics and evolution
|May 25, 2024
概括
精确的蝶和 (Lepidoptera) 进化树取决于强大的分类型采样. 这项研究揭示了新的关系,但强调了需要更多种类来解决Ditrysia内的快速辐射.
科学领域:
- 进化生物学 进化生物学
- 人类遗传学 是一个学科.
- 昆虫系统学 昆虫系统学
背景情况:
- 蝶 (蝶和蝶) 在生态上至关重要,但它们的更高层次的基因关系仍未得到解决.
- 现有的基因组学研究在分类型采样方面存在局限性,这阻碍了对类的进化有全面的理解.
研究的目的:
- 通过增加分类样本采集和利用大型氨基酸数据集,构建一个强大的Lepidoptera遗传学框架.
- 调查分类型采样和基因数量对基因谱树准确性和稳健性的影响.
- 为了确定系统错误的来源,如长枝吸引力,在类飞的基因组重建.
主要方法:
- 使用最大概率 (ML) 和贝叶斯推理 (BI) 方法进行族群基因组重建.
- 分析来自37个超级家族的263种类型的大型氨基酸数据集 (69,680至400,330个站点).
- 评估分类型采样效应和测试基于ML的模型以测试拓 robustness.
主要成果:
- 税种采样是准确的类类植物遗传学估计的关键因素.
- 长枝吸引力 (LBA) 被确定为一个重要的偏差来源,导致迪特里西亚群体的不稳定位置.
- 揭示了具有强烈支持的新遗传关系,包括Papilionoidea姐妹的Gelechioidea和Immoidea姐妹的Galacticoidea.
结论:
- 增加的分类型采样显著提高了类类植物遗传树的强度.
- 需要进一步增加分类型采样,以解决物种丰富的迪特里西亚和阿波迪特里西亚中尚未解决的关系.
- 这项研究为未来的类类植物遗传学研究提供了重要的见解,强调了全面的分类样本采集的重要性.
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