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同步的苗代辐射和 pantropical Xylopia (Annonaceae) 的地理依赖多样化

Francis J Nge¹, David M Johnson², Nancy A Murray²

¹National Herbarium of New South Wales, Botanic Gardens of Sydney, Locked Bag 6002, Mount Annan, NSW 2567, Australia; DIADE, Univ Montpellier, CIRAD, IRD, Montpellier 34090, France.

Molecular phylogenetics and evolution

|November 1, 2025

概括

热带西罗皮亚 (Annonaceae) 在米奥森时期经历了全球同步辐射,由海平面和温度变化等各种区域因素驱动. 息地转型影响了多样化速度,超的土壤促进了更高的速度.

科学领域:

进化生物学是进化的生物学.
人类遗传学是一个学科.
热带生态热带生态

背景情况:

热带雨林表现出复杂的多样性.
泛热带Xylopia属 (Annonaceae) 是研究热带雨林多样化的模型.

研究的目的:

为了调查Xylopia跨时间,区域和息地多样化的进化驱动因素.
了解环境和地理因素在塑造雨林谱系中的作用.

主要方法:

通过使用混合捕获数据,为88%的Xylopia物种生成了时间校准的基因组.
采用多元化分析 (BAMM,ClaDS,CoMET,RPANDA,GeoHiSSE) 来评估费率异质性和环境/地理影响.

主要成果:

在西洛皮亚发现了显著的多元化速率异质性,与全球同步的米奥生辐射.
在非洲,中美洲和马达加斯加观察到更高的多样化;在澳大利亚/新几内亚较低.
确定了海平面变化作为亚洲,澳大利亚,太平洋和新热带地区的关键驱动因素;非洲的温度.
过渡到超的息地增加了多样化率,而低湿的过渡减少了它们.

结论:

克西洛皮亚的多样化显示了同步的区域辐射,但不同的环境驱动因素.
马达加斯加的岩层辐射约7亿年前,与印度季风降雨有关.
雨林的多样化是复杂的,受到类特异性和区域特异性的环境因素的影响.

关键词:

这种植物是Annonaceae.这就是BAMM.多样化的多样化.这是一个GeoHiSSE.拉邦达 (Rwanda) 是一个国家.辐射辐射辐射辐射热带雨林的雨林是什么意思超级奇幻的超级奇幻克西洛皮亚 (Xylopia) 是一种表现.

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