Gamete interaction: is it species-specific?
Gamete interaction: is it species-specific?
复制标题
配子相互作用：是否具有物种特异性？
DOI：
10.1002/mrd.20542
复制
发表时间：
2006
影响因子：
2.5
通讯作者：
Miller,DavidJ
中科院分区：
文献类型：
--
作者：
Vieira,Ana;Miller,DavidJ
生殖隔离对于维持物种分离至关重要，可以通过多种机制来实现。此外，配子相互作用障碍的发展可能会推动物种形成。这种种间配子相互作用的障碍可以是合子前的或合子后的。考虑到动物物种的巨大多样性，很容易认为受精早期步骤的调控对于维持物种同一性至关重要。文献中经常提到的一种合子前机制是配子相互作用仅限于同一物种的配子。但是所有动物的配子都以物种特异性的方式相互作用吗？配子相互作用是完全物种特异性的还是可能只是物种限制的？在已描述物种限制的物种中，种间障碍是受精过程中的一个主要步骤，还是部分限制步骤的组合，共同导致种间受精受阻？自由产卵生物和体内受精生物之间避免种间杂交的机制是否不同？这篇综述将解决这些问题，重点关注合子前障碍，并将描述可能解释物种有限配子识别和受精的分子生物学知识。摩尔。重现。开发。 73: 1422–1429, 2006。© 2006 Wiley-Liss, Inc.
Reproductive isolation is pivotal to maintain species separation and it can be achieved through a plethora of mechanisms. In addition, the development of barriers to gamete interaction may drive speciation. Such barriers to interspecific gamete interaction can be prezygotic or postzygotic. Considering the great diversity in animal species, it is easy to assume that regulation of the early steps of fertilization is critical to maintain species identity. One prezygotic mechanism that is often mentioned in the literature is that gamete interaction is limited to gametes of the same species. But do gametes of all animals interact in a species‐specific way? Are gamete interactions completely species‐specific or perhaps just species‐restricted? In species in which species‐restrictions have been described, is the interspecies barrier at one major step in the fertilization process or is it a combination of partially restricted steps that together lead to a block in interspecific fertilization? Are the mechanisms used to avoid interspecific crosses different between free‐spawning organisms and those with internal fertilization? This review will address these questions, focusing on prezygotic barriers, and will describe what is known about the molecular biology that may account for species‐limited gamete recognition and fertilization. Mol. Reprod. Dev. 73: 1422–1429, 2006. © 2006 Wiley‐Liss, Inc.