高分辨率的核系学揭示了强烈的遗传学保守主义以及Solanum L中的水果颜色和尺寸的相关进化
João Vitor S Messeder1,2, Tomás A Carlo1,2, Guojin Zhang1
1Department of Biology, Huck Institutes of the Life Sciences, The Pennsylvania State University, University Park, PA, 16802, USA.
The New phytologist
|May 27, 2024
概括
索兰果的水果进化在颜色和尺寸上表现为保守,绿色,中等果是祖先的形式. 遗传学约束可能会限制动物对肉类水果多样化的影响.
科学领域:
- 进化生物学 进化生物学
- 植物科学 植物科学
- 人类遗传学 是一个学科.
背景情况:
- 植物和动物之间的互惠驱动了血管精子辐射.
- 肉质水果的进化是很难理解的,因为遗传学上的不确定性,特别是在不同的属像Solanum.
- 索兰木表现出显著的有肉的水果多样性,但缺乏解决的家族遗传关系.
研究的目的:
- 为了重建Solanum属的族系.
- 为了研究Solanum中的水果颜色和大小演变的节奏和模式.
- 了解植物遗传约束在肉质水果特征多样化中的作用.
主要方法:
- 使用1786个核基因进行了家族遗传学分析.
- 包括122个新生成的转录组和基因组.
- 分析水果颜色和尺寸的演变,检查特征保守主义和相关性.
主要成果:
- 索拉努姆的骨干分类学被解决了,其类型得到了高度支持.
- 索拉努姆的起源可以追溯到53.1亿年前,主要的克拉德分离在35-27亿年前.
- 水果颜色和大小的进化表明了保守主义,中等大小的绿色果作为祖先状态. 果实的大小和颜色是相关的,淡色的果实更大.
结论:
- 在Solanum水果特征中强烈的家族遗传保守主义可能会限制frugivores对肉类水果进化的影响.
- 遗传学约束在肉质水果的功能特征的多样化中起着至关重要的作用.
- 了解Solanum的进化历史,可以让我们深入了解血管精子多样化的更广泛模式.
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