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首页> 外文期刊>Acta Horticulturae >Regulation of seed germination and stand establishment - importance of repression of developmental programs.
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Regulation of seed germination and stand establishment - importance of repression of developmental programs.

机译：种子萌发和林分建立的规定-压制发展计划的重要性。

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In this review, the importance of the repression of developmental programmes is discussed by examining recent findings from seed biology research. Emergence of the embryo from seed is repressed by surrounding tissues such as the endosperm and testa. This provides the precise control of seed germination in Solanaceae and other species. Repression at the molecular level is also important for seed germination and seedling establishment. Post-transcriptional and -translational regulations play important roles in the repression of developmental programmes at certain stages. The degradation of repressor proteins by the ubiquitin-26S proteasome pathway is a central mechanism of gibberellic acid signal transduction in seed dormancy and germination. Abscisic acid signalling, which is essential for seed development and seedling responses to the environment, is also mediated by protein degradation. MicroRNAs are involved in the repression of transcription factors at the mRNA level during seed germination and seedling growth. Detailed molecular mechanisms involved in the repression of developmental programmes in seeds and seedlings are discussed.
机译：在这篇综述中，通过检查种子生物学研究的最新发现，讨论了抑制发育程序的重要性。种子的胚芽被周围的组织（如胚乳和睾丸）抑制。这提供了茄科和其他物种种子发芽的精确控制。在分子水平上的抑制对于种子发芽和幼苗建立也很重要。转录后和翻译后的法规在某些阶段对发展计划的抑制中起着重要作用。泛素-26S蛋白酶体途径对阻遏蛋白的降解是赤霉素信号转导种子休眠和萌发的主要机制。脱落酸信号对于种子发育和幼苗对环境的反应至关重要，也通过蛋白质降解来介导。在种子发芽和幼苗生长过程中，MicroRNA在mRNA水平上参与转录因子的抑制。讨论了抑制种子和幼苗发育程序的详细分子机制。

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