Reproductive Isolation Among Three Nocturnal Moth-Pollinated Sympatric Habenaria Species (Orchidaceae).
Reproductive Isolation Among Three Nocturnal Moth-Pollinated Sympatric Habenaria Species (Orchidaceae).
复制标题
三种夜间飞蛾 - 授粉同胞Habenaria物种（Orchidaceae）的生殖隔离。
DOI：
10.3389/fpls.2022.908852
复制
发表时间：
2022
影响因子：
5.6
通讯作者：
Ren, Zong-Xin
中科院分区：
文献类型：
--
作者：
Zhang, Hai-Ping;Tao, Zhi-Bin;Trunschke, Judith;Shrestha, Mani;Scaccabarozzi, Daniela;Wang, Hong;Ren, Zong-Xin
比较和量化授粉前和授粉后对种间杂交的多重障碍对于了解促进生殖隔离的因素很重要。最近在许多开花植物中研究了这种隔离因子，这些植物寻求不同授粉前和授粉后障碍的一般作用和相对强度。在这项研究中，我们量化了六个隔离因素(生态地理隔离、物候隔离、传粉者隔离、授粉-雌蕊相互作用、果实生产和种子发育)，这些因素可能在三个共域哈贝纳种群(H.limprichtii、H.davidii和H.delavayi)的不同发育阶段起到生殖障碍的作用。这三个物种在地理上重叠，但占据不同的微生境，土壤水分含量不同。它们通过传粉者的相互作用(传粉者的偏好)和机械的(授粉附着点)相互作用而被隔离，但不同物种对的隔离程度不同。利姆普里希提和达维迪的种间杂交坐果率高，胚胎发育表明授粉后障碍较弱，而德拉瓦伊和其他两个物种的双向杂交不能结果。我们的结果表明，传粉者是维持这三个共域哈贝纳属物种之间边界的最重要的隔离屏障，包括行为学和机械机制。我们的研究还强调了授粉前和授粉后障碍的组合对兰科物种共存的重要性。
Comparison and quantification of multiple pre- and post-pollination barriers to interspecific hybridization are important to understand the factors promoting reproductive isolation. Such isolating factors have been studied recently in many flowering plant species which seek after the general roles and relative strengths of different pre- and post-pollination barriers. In this study, we quantified six isolating factors (ecogeographic isolation, phenological isolation, pollinator isolation, pollinia-pistil interactions, fruit production, and seed development) that could possibly be acting as reproductive barriers at different stages among three sympatric Habenaria species (H. limprichtii, H. davidii, and H. delavayi). These three species overlap geographically but occupy different microhabitats varying in soil water content. They were isolated through pollinator interactions both ethologically (pollinator preference) and mechanically (pollinia attachment site), but to a variable degree for different species pairs. Interspecific crosses between H. limprichtii and H. davidii result in high fruit set, and embryo development suggested weak post-pollination barriers, whereas bidirectional crosses of H. delavayi with either of the other two species fail to produce fruits. Our results revealed that pollinators were the most important isolating barrier including both ethological and mechanical mechanisms, to maintain the boundaries among these three sympatric Habenaria species. Our study also highlights the importance of a combination of pre-and post-pollination barriers for species co-existence in Orchidaceae.
登录
查看更多内容
DOI：
10.1098/rsbl.2004.0166
发表时间：
2004-08-07
影响因子：
4.7
作者：
Cozzolino, S;D'Emerico, S;Widmer, A
通讯作者：
Widmer, A
影响因子：
3.3
作者：
Dell'Olivo, Alexandre;Hoballah, Maria Elena;Kuhlemeier, Cris
通讯作者：
Kuhlemeier, Cris
DOI：
10.1098/rspb.2005.3069
发表时间：
2005-06-22
影响因子：
4.7
作者：
Cozzolino, S;Schiestl, FP;Widmer, A
通讯作者：
Widmer, A
影响因子：
3.9
作者：
Fachardo, A. L. S.;Sigrist, M. R.
通讯作者：
Sigrist, M. R.
影响因子：
1.7
作者：
Gegear, RJ;Thomson, JD
通讯作者：
Thomson, JD