Relationship between ethylene and auxin signalling in Arabidopsis root development

乙烯和生长素信号在拟南芥根发育中的关系

• 批准号: BB/E006531/1
• 负责人: Keith Lindsey
• 金额: $ 37.83万
• 依托单位: Durham University
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2006
• 资助国家: 英国
• 起止时间: 2006 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=BB%2FE006531%2F1
• 关键词: Relationship; between; ethylene; auxin; signalling

The growth and development of plants is controlled by a combination of genetic programming and environmental influence. For example, the patterning of floral organs is altered very little by the environment, and can be considered to be strongly dependent on genetic factors; but other aspects of plant development, such as the timing of flowering or the growth or leaves or roots, is much more dependent on prevailing conditions of temperature, water and nutrient availability, and so on. The effects of environment on gene expression and developmental changes are coordinated by plant hormones. One such hormone, the gas ethylene, influences many developmental processes, including root growth and development. The aim of this grant is to understand better how it interacts with another key hormone, auxin, to control gene expression and cellular organization in the root. We have already found that one particular mutant of the plant Arabidopsis, the polaris mutant, is unable to regulate correctly its ethylene responses, resulting in a shortened root system typical of plants that have been over-exposed to ethylene. At the same time, this ethylene problem affects the transport and accumulation of auxin in the root, previously found to be important in regulating root development. We hope to understand better the link between ethylene, auxin and root growth, by studying different ethylene mutants for altered auxin transport and accumulation, cellular organization and root growth.

植物的生长和发育是由遗传规划和环境影响共同控制的。例如，花器官的模式几乎不受环境的影响，可以认为是强烈依赖于遗传因素;但是植物发育的其他方面，例如开花或生长或叶子或根的时间，更多地取决于温度，水和养分可用性的主要条件，环境对基因表达和发育变化的影响是通过植物激素来协调的。其中一种激素，气体乙烯，影响许多发育过程，包括根的生长和发育。这项资助的目的是更好地了解它如何与另一种关键激素生长素相互作用，以控制根中的基因表达和细胞组织。我们已经发现，植物拟南芥的一种特定突变体，北极星突变体，不能正确调节其乙烯反应，导致过度暴露于乙烯的植物典型的根系缩短。与此同时，乙烯问题影响了生长素在根中的运输和积累，以前发现生长素在调节根发育方面很重要。我们希望通过研究不同的乙烯突变体，改变生长素的运输和积累，细胞组织和根生长，更好地了解乙烯，生长素和根生长之间的联系。

项目成果

Seed Genomics

种子基因组学

• DOI: 10.1002/9781118525524.ch2
• 发表时间: 2013
• 作者: Fonseka D

Handbook of Biologically Active Peptides

生物活性肽手册

• DOI: 10.1016/b978-012369442-3/50008-8
• 发表时间: 2006
• 作者: LINDSEY K