THE MECHANISM OF ETHYLENE REGULATION OF PHOTOPERIODIC FLOWERING IN PLANTS

乙烯调控植物光周期开花的机制

• 批准号: 7959877
• 负责人: Alison Fisher
• 金额: $ 9.52万
• 依托单位: UNIVERSITY OF VERMONT & ST AGRIC COLLEGE
• 依托单位国家: 美国
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-07-01 至 2010-06-30
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/7959877
• 关键词: Angiosperms; Attention; Computer Retrieval of Information on Scientific Projects Database; Defect; Disease; Ethylenes; Event; Flowers; Funding; Genetic; Grant; Health; Human; Institution; Japanese Population; Light; Link; Literature; Modeling; Molecular; Photoperiod; Plant Growth Regulators; Plants; Process; Production; Regulation; Relative (related person); Research; Research Personnel; Resources; Role; Seedling; Site; Source; United States National Institutes of Health; Vermont; Viola; Work; circadian pacemaker; day length; response

This subproject is one of many research subprojects utilizing the resources provided by a Center grant funded by NIH/NCRR. The subproject and investigator (PI) may have received primary funding from another NIH source, and thus could be represented in other CRISP entries. The institution listed is for the Center, which is not necessarily the institution for the investigator. Determining when to flower is one of the most important decisions a plant must make in its lifetime, and understanding the ways plants do this remains one of the most important challenges to plant biologists today. It is known that many plants flower in response to photoperiod (the relative length of day and night) and, for over eighty years, researchers have focused their attentions on elucidating the molecular events that initiate flowering in photoperiodic plants. In the literature, the role of the plant hormone ethylene in this process remains controversial. The research proposed here aims to explore the role of ethylene in the photoperiodic flowering response of the model short-day photoperiodic plant Pharbitis nil Chois cv Violet (Japanese morning glory). Objectives of this research are (1) to determine if ethylene production in P. nil is regulated by photoperiod, (2) to investigate the site of ethylene biosynthetic control in response to photoperiod, and (3) to determine if ethylene alone can induce flowering in P. nil seedlings in lieu of photoperiod. Results of this work will further our understanding of photoperiodic flowering in plants and may shed light on various human health disorders linked to defects in the circadian clock.

该子项目是利用该技术的众多研究子项目之一 资源由 NIH/NCRR 资助的中心拨款提供。子项目和 研究者 (PI) 可能已从 NIH 的另一个来源获得主要资金， 因此可以在其他 CRISP 条目中表示。列出的机构是 对于中心来说，它不一定是研究者的机构。 确定何时开花是植物一生中必须做出的最重要的决定之一，而了解植物开花的方式仍然是当今植物生物学家面临的最重要的挑战之一。众所周知，许多植物的开花响应于光周期（白天和黑夜的相对长度），八十多年来，研究人员一直将注意力集中在阐明光周期植物开花的分子事件上。在文献中，植物激素乙烯在此过程中的作用仍然存在争议。本文提出的研究旨在探讨乙烯在短日照光周期模型植物 Pharbitis nil Chois cv Violet（日本牵牛花）光周期开花响应中的作用。本研究的目的是 (1) 确定 P. nil 的乙烯产生是否受光周期调节，(2) 研究乙烯生物合成控制响应光周期的位点，以及 (3) 确定单独的乙烯是否可以诱导开花在 P. nil 幼苗中代替光周期。这项工作的结果将进一步加深我们对植物光周期开花的理解，并可能揭示与生物钟缺陷相关的各种人类健康疾病。