侵入和家长冲突的形状反复发生的后囊性隔离事件
Megan E Frayer1, Hagar K Soliman1,2, Pia F Schwarz1
1Department of Ecology & Evolutionary Biology, Yale University, New Haven, CT, 06511.
bioRxiv : the preprint server for biology
|October 3, 2025
概括
父母冲突导致Mimulus guttatus复合体中的快速杂交种子不可行. 地理模式,而不仅仅是物种关系,揭示了这种受内入侵影响的繁殖隔离.
科学领域:
- 进化生物学 进化生物学
- 遗传学 是一个遗传学.
背景情况:
- 异位后的生殖隔离往往迅速发展,与中立分歧理论相反.
- 基因内冲突,特别是父母对资源分配的冲突,是内在生殖障碍的关键驱动因素.
- 杂交种子无活性是血管苗中常见的,快速演变的障碍物,但冲突和内进的相互作用仍然不清楚.
研究的目的:
- 为了调查父母冲突和内侵在杂交种子不可行性中的作用,在Mimulus guttatus物种复合体内.
- 为了确定地理模式或家族遗传关系是否能更好地解释生殖隔离.
- 探讨内入侵是如何导致分娩隔离的.
主要方法:
- 在Mimulus guttatus物种群中进行了广泛的,范围广泛的交叉调查.
- 分析了跨越地理和遗传学距离的杂交种子不可行性的模式.
- 检查了潜在的共同不兼容性内进的证据.
主要成果:
- 杂交种子不可行性模式与地理位置有很强的相关性,而不是类遗传学.
- 生殖隔离超越了物种界限,影响了地理上接近但在遗传学上遥远的物种.
- 证据支持家长冲突是驱动因素,内进是共享不兼容性的机制.
结论:
- 父母冲突和内侵相互作用,在Mimulus guttatus复合体中迅速形成生殖隔离.
- 地理上的近距离和内进化创造了不相容的复杂景观,推动了快速物种化.
- 这项研究强调了非中性进化过程在生殖障碍的形成.
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