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独特的形态基础和平行进化历史的人格花在Penstemon

Trinity H Depatie¹, Carolyn A Wessinger¹

¹Department of Biological Sciences, University of South Carolina, 715 Sumter St. Columbia, SC 29208 USA.

bioRxiv : the preprint server for biology

|December 16, 2024

概括

封闭的人格花在Penstemon进化了多次,与龙有着不同的形态. 这种快速的进化可能源于新的突变或现有的遗传变异.

科学领域:

植物学植物学
进化生物学进化生物学
植物形态学植物形态学

背景情况:

适应性辐射驱动着各种植物系中新鲜的花特征的快速演变.
复杂的花形态,如封闭的个人花,与花颜色等特征相比,研究不足.
被遮蔽的人格花,以阻塞的花通道为特征,已经演变为多个属,但主要记录在快龙中.

研究的目的:

调查Penstemon类中的个性化花的形态基础和进化史.
描述13种Penstemon物种的花形态,并推断13种Penstemon物种的遗传学关系.
为了检查个性化花的进化历史,并测试相关血统中的内进.

主要方法:

描述了13个Penstemon物种的花形态.
对于研究的Penstemon clade,人们推断出了家族基因关系.
用于评估历史基因流动的内进化类基因组测试被使用.

主要成果:

茎人格花是由腹叶组织中的深形成的,阻塞了花管的开口,与龙形态不同.
遗传学分析表明,人格花在Penstemon.com内至少有两个独立的血统中独立进化.
虽然不完整的谱系排序和内向导致了家族基因学不一致,但最近两个人格花的谱系之间的内向是最小的.

结论:

与龙相比,Penstemon的个性化花的进化表现出一个独特的形态基础.
在快速的进化时间尺度上,人格花在Penstemon中反复演变.
这些反复发生的进化转变的遗传基础可能涉及新的突变或利用先前存在的遗传变异.

关键词:

花的形态学花的形态学不完整的血统排序不完整的血统排序内进侵权侵权是一种内进.平行进化是一个平行进化的过程.在Penstemon上使用.个性化花朵的人格化花朵人类基因组学是什么?

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