Molecular approaches to germination and desiccation tolerance

发芽和耐干燥性的分子方法

• 批准号: 2210-2007
• 负责人: Bewley, Derek
• 金额: $ 5.83万
• 依托单位: University of Guelph
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2007
• 资助国家: 加拿大
• 起止时间: 2007-01-01 至 2008-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=361521
• 关键词: Molecular; approaches; germination; desiccation; tolerance

Breaking of seed dormancy, leading to germination, is under the control of plant hormones.  These cause changes in the expression of key genes, but first the hormone has to be recognized as a signal to induce these events. Elucidating the signal transduction pathway is key to our understanding of how hormones work, and for their useful application to improve agronomc traits.  Our research concentrates a pivotal protein component of this pathway, to determine how it functions, and how its action is controlled within the seed to promote germination.All agricultural plants are affected adversely by lack of water.  We have identified a horticultural plant whose roots can withstand desiccation.  Related to this tolerance is the appearance in the roots of a small protein, in abundant quantities.  We are studying this protein, and its synthesis, with the intent of introducing it into intolerant temperate crop plants, in the expectation that it will increase their ability to withstand drought.

打破种子休眠并导致发芽是在植物激素的控制下的。  这些会导致关键基因表达的变化，但首先必须将激素识别为诱导这些事件的信号。阐明信号转导途径是我们了解激素如何发挥作用及其在改善农艺性状方面的有用应用的关键。  我们的研究集中于该途径的关键蛋白质成分，以确定其如何发挥作用，以及如何在种子内控制其作用以促进发芽。所有农业植物都会因缺水而受到不利影响。  我们已经发现了一种根部能够承受干燥的园艺植物。  与这种耐受性相关的是根部中出现的大量小蛋白质。  我们正在研究这种蛋白质及其合成，目的是将其引入不耐受的温带作物中，期望它将提高它们抵御干旱的能力。