浙江农业学报

• 作物科学 • 上一篇    下一篇

寡糖对小麦脱落酸合成的影响

  

  1. 1 辽宁工业大学 化学与环境工程学院,辽宁 锦州 121001;2 辽宁工业大学 理学院,辽宁 锦州 121001;3 辽宁工业大学 材料科学与工程学院,辽宁 锦州 121001
  • 出版日期:2015-01-25 发布日期:2015-01-17

Effects of oligosaccharides on abscisic acid synthesis in wheat

  1. 1 School of Chemical & Environment Engineering, Liaoning University of Technology, Jinzhou 121001, China; 2 School of Science, Liaoning University of Technology, Jinzhou 121001, China; 3 School of Materials Science and Engineering, Liaoning University of Technology, Jinzhou 121001, China
  • Online:2015-01-25 Published:2015-01-17

摘要: 脱落酸(abscisic acid, ABA)是一种植物激素,可作为信号分子参与调控植物的生理活动。来自海洋的褐藻胶寡糖 (alginate oligosaccharides,AOS)可刺激小麦叶片中内源性ABA积累。本研究通过对相关基因转录情况的研究发现,褐藻胶寡糖能上调小麦中ABA合成基因TaNCED,TaAOX和TaBG的转录。使用脱落酸从头合成抑制剂氟啶酮(fluridone)后,外源施加褐藻胶寡糖不能诱导小麦中内源ABA产生。说明褐藻胶寡糖诱导内源性ABA的产生可能是通过ABA合成信号通路实现的

关键词: 褐藻胶寡糖, ABA合成, TaNCED基因, TaAOX基因, TaBG基因

Abstract: Abscisic acid (ABA), a kind of phytohormone in plants, is involved in the regulation of many physiological properties as a signal molecule. Alginate oligosaccharides (AOS) prepared from degradation of alginate could regulate ABA synthesis, and stimulate endogenous ABA accumulation in wheat. In the present study, it was shown that AOS induced ABA synthesis mainly through up-regulating expression of ABA biosynthesis-related genes, i.e. TaNCED, TaAOX and TaBG. After fluridone treatment, no ABA accumulation was induced by AOS anymore. The results suggested that AOS induced endogenous ABA production may be achieved by ABA synthesis of signaling pathways.

Key words: alginate oligosaccharides, ABA synthesis, TaNCED, TaAOX, TaBG