Molecular mechanisms and genetic regulation of self-incompatibility in flowering plants: implications for crop improvement and evolutionary biology.

IF 3.9 2区 生物学 Q2 BIOCHEMISTRY & MOLECULAR BIOLOGY
Latif Ahmad Peer, Bilal Ahmad Mir
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引用次数: 0

Abstract

Self-incompatibility is a fundamental biological mechanism in flowering plants that prevents self-fertilization, thereby promoting outcrossing and enhancing genetic diversity. This complex system has independently evolved across multiple angiosperm lineages and is crucial in maintaining plant reproductive success. Recent research has expanded our understanding of self-incompatibility's molecular basis and uncovered key genes and signaling pathways involved in self-incompatibility responses, such as S-RNase in Solanaceae and PrsS-PrpS in Papaveraceae, as well as the SRK-SCR interaction in Brassicaceae. However, despite significant advances, many aspects of self-incompatibility, such as the interplay between gene duplications, polyploidization, and the evolution of novel self-incompatibility mechanisms, remain underexplored. This review integrates findings from various plant families, including Solanaceae, Rosaceae, Papaveraceae, and Brassicaceae, and discusses the evolutionary dynamics of self-incompatibility systems, highlighting the role of gene duplication, recombination, and translocation events in shaping self-incompatibility diversity. Special emphasis is placed on understanding how modern molecular techniques, such as CRISPR/Cas9 and marker-assisted selection, can be employed to transition self-incompatibility to self-compatibility in economically significant crops. Additionally, the role of epigenetic changes and modifier genes in mediating transitions from self-incompatibility to self-compatibility is addressed, offering insights into how these mechanisms can be leveraged for crop breeding and hybrid seed production. Future research should focus on elucidating the molecular mechanisms underlying self-incompatibility responses, exploring the potential of targeted gene editing to overcome reproductive barriers, and understanding the evolutionary resilience of self-incompatibility systems to environmental changes.

开花植物自交不亲和的分子机制和遗传调控:对作物改良和进化生物学的启示。
自交不亲和是开花植物阻止自交受精从而促进异交和增强遗传多样性的基本生物学机制。这个复杂的系统在多个被子植物谱系中独立进化,对维持植物繁殖的成功至关重要。近年来的研究扩大了我们对自交不亲和性分子基础的认识,揭示了自交不亲和性反应的关键基因和信号通路,如茄科的S-RNase和木瓜科的PrsS-PrpS,以及芸苔科的SRK-SCR相互作用。然而,尽管取得了重大进展,但自交不亲和性的许多方面,如基因复制、多倍体化和新型自交不亲和性机制的进化之间的相互作用,仍未得到充分探索。本文综述了来自茄科、蔷薇科、罂粟科和芸苔科等不同植物科的研究成果,讨论了自交不亲和系统的进化动力学,强调了基因复制、重组和易位事件在形成自交不亲和多样性中的作用。特别强调的是如何理解现代分子技术,如CRISPR/Cas9和标记辅助选择,可以用来将经济上重要的作物的自不亲和性转变为自亲和性。此外,表观遗传变化和修饰基因在介导从自交不亲和向自交不亲和转变中的作用也得到了解决,为如何利用这些机制进行作物育种和杂交种子生产提供了见解。未来的研究应侧重于阐明自不相容反应的分子机制,探索靶向基因编辑克服生殖障碍的潜力,以及了解自不相容系统对环境变化的进化恢复力。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Plant Molecular Biology
Plant Molecular Biology 生物-生化与分子生物学
自引率
2.00%
发文量
95
审稿时长
1.4 months
期刊介绍: Plant Molecular Biology is an international journal dedicated to rapid publication of original research articles in all areas of plant biology.The Editorial Board welcomes full-length manuscripts that address important biological problems of broad interest, including research in comparative genomics, functional genomics, proteomics, bioinformatics, computational biology, biochemical and regulatory networks, and biotechnology. Because space in the journal is limited, however, preference is given to publication of results that provide significant new insights into biological problems and that advance the understanding of structure, function, mechanisms, or regulation. Authors must ensure that results are of high quality and that manuscripts are written for a broad plant science audience.
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