被子植物自相容性的分子和进化机制。

Q3 Medicine 遗传 Pub Date : 2024-01-20 DOI:10.16288/j.yczz.23-300
Hong Zhao, Yong-Biao Xue
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引用次数: 0

摘要

作为一种种内杂交机制,雌雄同体植物广泛采用的自交不亲和(SI)通常由多态性多等位基因 S 基因座控制。通常,已发现的 SI 有六种分子类型,其中Ⅰ型由雌蕊 S S-RNase 和花粉 S SLF 控制,常见于车前草科、茄科、蔷薇科和芸香科;Ⅱ型由十字花科中的 SRK 和 SCR 控制;Ⅲ型由罂粟科中的 PrsS 和 PrpS 控制;Ⅳ型由 CYP-GCR 控制、其中 I 型为非自我识别系统,II 型、III 型和 VI 型为自我识别系统。此外,近年来在其起源和进化机制方面也取得了显著进展。其中,Ⅰ型 SI 单一起源于裸子植物最近的共同祖先,Ⅱ-Ⅴ型在其丧失后动态演化,而Ⅵ型 SI 只存在于单子叶植物 Poaceae 中,可能在古老的Ⅰ型丧失后重新获得。在此,我们主要综述了被子植物SI系统的分子和进化机制,从而为其理论研究和育种应用提供有益的参考。
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Molecular and evolutionary mechanisms of self-incompatibility in angiosperms.

As an intraspecific outcrossing mechanism, self-incompatibility (SI) widely adopted by hermaphroditic plants is usually controlled by a polymorphic multi-allelic S locus. Typically, six molecular types of SI have been found, including type-I controlled by the pistil S S-RNase and pollen S SLFs commonly spread in Plantaginaceae, Solanaceae, Rosaceae and Rutaceae, type-II by SRK and SCR in Brassicaceae, type-III by PrsS and PrpS in Papaveraceae, type-IV by CYP-GLO2-KFB-CCM-PUM in Primulaceae, type-V by TsSPH1-TsYUC6-TsBAHD in Turneraceae and type-VI by HPS10-S and DUF247I-S in Poaceae, with type-I characterized as a non-self recognition system but types-II, -III and -VI self ones. Furthermore, remarkable progresses have been made in their origin and evolutionary mechanisms recently. Among them, type-I SI possessed a single origin in the most recent common ancestor of eudicots and types II-V dynamically evolved following its losses, while type-VI SI exclusively existed in monocot Poaceae may be regained after the loss of the ancient type-I. Here, we mainly review the molecular and evolutionary mechanisms of angiosperm SI systems, thus providing a helpful reference for their theoretical research and breeding application.

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来源期刊
遗传
遗传 Medicine-Medicine (all)
CiteScore
2.50
自引率
0.00%
发文量
6699
期刊介绍: Hereditas is a national academic journal sponsored by the Institute of Genetics and Developmental Biology of the Chinese Academy of Sciences and the Chinese Society of Genetics and published by Science Press. It is a Chinese core journal and a Chinese high-quality scientific journal. The journal mainly publishes innovative research papers in the fields of genetics, genomics, cell biology, developmental biology, biological evolution, genetic engineering and biotechnology; new technologies and new methods; monographs and reviews on hot issues in the discipline; academic debates and discussions; experience in genetics teaching; introductions to famous geneticists at home and abroad; genetic counseling; information on academic conferences at home and abroad, etc. Main columns: review, frontier focus, research report, technology and method, resources and platform, experimental operation guide, genetic resources, genetics teaching, scientific news, etc.
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