A Molecular and Genetic Analysis of Apical Dominance

顶端优势的分子和遗传学分析

• 批准号: 9119117
• 负责人: Carolyn Napoli
• 金额: $ 20万
• 依托单位: University of California-Davis
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1992
• 资助国家: 美国
• 起止时间: 1992-04-01 至 1994-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9119117&HistoricalAwards=false
• 关键词: Molecular; Genetic; Analysis; Apical; Dominance

Growth and development in plants is a complex process wherein environmental and physical factors interact substantially with the genotype to determine the actual form of a plant in a particular environment. Apical dominance (correlative inhibition and control of lateral branching) is a hormonally regulated process whereby a growing shoot apical meristem controls the development and growth of axillary buds, and thus has a major impact on the shape a plant attains. The research proposed herein utilizes modern genetic methods to identify, characterize and clone genes which are responsible for the phenotypic expression of decreased apical dominance (increased branching) in Petunia hybrida. A study of the genes which control apical dominance will provide insight into the mechanisms underlying correlative inhibition. The knowledge provided by this research will further the understanding of the molecular and physiological processes controlled by these genes. In the long term the intent is to use this knowledge and genetic materials to investigate the biochemistry and physiology of correlative inhibition.

植物的生长和发育是一个复杂的过程 环境和物理因素相互作用， 基因型，以确定在特定的植物的实际形式 环境 顶端优势（相关抑制和控制 是一个受植物生长调节的过程， 生长的茎尖分生组织控制着茎的发育和生长 腋芽的生长，因此对植物的形状有重大影响 达到。本文提出的研究利用现代遗传学 鉴定、表征和克隆基因的方法， 负责减少顶端的表型表达 在矮牵牛中的优势（增加分枝）。 的研究 控制顶端优势的基因将提供对 相关抑制的潜在机制。 知识 这项研究提供的信息将进一步了解 由这些基因控制的分子和生理过程。 从长远来看，目的是利用这些知识和遗传 研究生物化学和生理学的材料 相关抑制