Chen Chen, E Zhiguo, Lin Hong-Xuan
Jiangsu Key Laboratory of Crop Genetics and Physiology, Co-Innovation Center for Modern Production Technology of Grain Crops, Key Laboratory of Plant Functional Genomics of the Ministry of Education, Yangzhou University Yangzhou, China.
China National Rice Research Institute Hangzhou, China.
Front Plant Sci. 2016 Aug 11;7:1208. doi: 10.3389/fpls.2016.01208. eCollection 2016.
Postzygotic reproductive isolation (RI) plays an important role in speciation. According to the stage at which it functions and the symptoms it displays, postzygotic RI can be called hybrid inviability, hybrid weakness or necrosis, hybrid sterility, or hybrid breakdown. In this review, we summarized new findings about hybrid incompatibilities in plants, most of which are from studies on Arabidopsis and rice. Recent progress suggests that hybrid incompatibility is a by-product of co-evolution either with "parasitic" selfish elements in the genome or with invasive microbes in the natural environment. We discuss the environmental influences on the expression of hybrid incompatibility and the possible effects of environment-dependent hybrid incompatibility on sympatric speciation. We also discuss the role of domestication on the evolution of hybrid incompatibilities.
合子后生殖隔离在物种形成中起着重要作用。根据其发挥作用的阶段和表现出的症状，合子后生殖隔离可被称为杂种 inviability、杂种衰弱或坏死、杂种不育或杂种衰败。在本综述中，我们总结了关于植物杂种不亲和性的新发现，其中大部分来自对拟南芥和水稻的研究。最近的进展表明，杂种不亲和性是与基因组中“寄生”自私元件或自然环境中入侵微生物共同进化的副产物。我们讨论了环境对杂种不亲和性表达的影响以及环境依赖性杂种不亲和性对同域物种形成的可能影响。我们还讨论了驯化在杂种不亲和性进化中的作用。
