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热带雨林的前米奥森的进化动态来自棕树家族的日期已定的基因组

Gang Yao¹, Bine Xue², Wei Wang³

¹College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou, 510642, China.

The New phytologist

|August 2, 2025

概括

棕树家族的多样化反映了热带雨林的进化历史. 气温上升刺激了棕树的生长,而冷却时期和奥利古纪后的冷却导致了灭绝率的增加,塑造了TRF的多样性.

科学领域:

古植物学是古植物学.
进化生物学进化生物学
气候科学气候科学

背景情况:

热带雨林 (TRF) 是地球上生物多样性最丰富的陆地生物群.
TRFs的进化历史及其与全球气候变化的关系仍然不清楚.
棕树家族 (Arecaceae) 是TRF的关键组成部分,为其进化提供了洞察力.

研究的目的:

为了重建棕树家族 (Arecaceae) 的进化动态.
研究棕树多样化与从白纪中期到奥利古纪末期的全球气候波动之间的关系.
了解气候变化对TRF物种多样性积累的影响.

主要方法:

用下一代和桑格测序数据的组合进行了家族遗传分析.
用12个化石记录进行了分类学校准.
推断时间进化动态和多样化速度的推断.

主要成果:

在白纪中期,Arecaceae大约在1.083亿年前 (Ma) 开始多样化.
棕树的多样化率在全球变暖期间增加,在冷却时期 (白纪中期到奥利古纪末期) 降低.
棕树的灭绝率显示,自奥利古纪 (Oligocene) 以来持续增加,这是全球温度较低的时期.

结论:

棕树的进化动态与全球气候变化密切相关.
由于气候变化,TRF中的物种周转很可能发生在不同的地质时代.
该研究提供了一个模型,以了解TRF的进化历史,以应对气候波动.

关键词:

在阿雷卡家族 (Arecaceae) 中生物多样性生物多样性气候变化气候变化多样化的多样化多样化的多样化人类基因组学是什么?热带热带雨林热带雨林

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