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

几个世纪以来，世界各地的人们已经利用了这一知识，即修剪嫩芽的生长尖端会使下面茎上的芽长出树枝。种植业、园艺业和林业的产量取决于树梢结构。自20世纪30年代发现生长素以来，人们一直认为茎的分枝是由植物激素调节的。然而，在本项目中，我们提出了一种新的理论，即茎尖对糖的需求在根尖优势中占主导地位；强化蔗糖是一种可移动的糖，对芽的初始生长是必要和充分的。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茎结构。

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.