The Role of Sugar Demand in Apical Dominance: Branching in a New Direction

糖需求在顶端优势中的作用：向新方向分支

• 批准号: DP150102086
• 负责人: Prof Christine Beveridge
• 金额: $ 25.94万
• 依托单位: The University of Queensland
• 依托单位国家: 澳大利亚
• 项目类别: Discovery Projects
• 财政年份: 2015
• 资助国家: 澳大利亚
• 起止时间: 2015-01-01 至 2017-12-31
• 项目状态: 已结题
• 来源: https://dataportal.arc.gov.au/RGS/Web/Grants/DP150102086
• 关键词: Role; Sugar; Demand; Apical; Dominance

For centuries, people around the world have made use of the knowledge that pruning the growing tips of shoots causes buds on the stem below to grow out into branches. Yields in crop, horticulture and forestry industries depend on shoot architecture. Since the discovery of auxin in the 1930s, shoot branching has been thought to be regulated by plant hormones. However, in this project we propose a new theory whereby shoot tip demand for sugar is predominant in apical dominance; enhanced sucrose, a mobile sugar, is necessary and sufficient for the initial growth of buds. This project aims to expand this theory, revealing underlying components involved in sucrose action and describe how the network of sugar demand and hormones acts to control shoot architecture.

几个世纪以来，世界各地的人们都利用了这样的知识：修剪嫩枝的生长顶端会使下面茎上的芽长出树枝。作物、园艺和林业的产量取决于枝条结构。自从20世纪30年代生长素被发现以来，人们一直认为枝条分枝是由植物激素调节的。然而，在这个项目中，我们提出了一个新的理论，即茎尖对糖的需求是占主导地位的顶端优势，增强蔗糖，一个移动的糖，是必要的和足够的芽的初始生长。该项目旨在扩展这一理论，揭示参与蔗糖作用的潜在成分，并描述糖需求和激素网络如何控制芽结构。