Understanding the biological functions of the karrikin-responsive signaling system of plants in growth, development and responses to the environment

了解植物 karrikin 响应信号系统在生长、发育和对环境的响应中的生物学功能

• 批准号: DP140104567
• 负责人: Prof Steven Smith
• 金额: $ 27.61万
• 依托单位: University of Tasmania
• 依托单位国家: 澳大利亚
• 项目类别: Discovery Projects
• 财政年份: 2014
• 资助国家: 澳大利亚
• 起止时间: 2014-01-01 至 2018-12-31
• 项目状态: 已结题
• 来源: https://dataportal.arc.gov.au/RGS/Web/Grants/DP140104567
• 关键词: Understanding; biological; functions; karrikin; responsive

A new signalling system in plants, related to that of strigolactone hormones but evolutionarily more ancient and functionally distinct, has been discovered. It is defined by the Karrkin-Insensitive-2 (KAI2) protein discovered by its ability to confer responsiveness to karrikins from bushfires. The KAI2 system influences seed germination, and development of seedlings, leaves and potentially roots. This project will use KAI2 mutants and transgenic plants to define the biological functions of KAI2 signalling, and its interactions with other signalling systems. New genes central to KAI2 signalling and responses will be identified for functional analysis. The research will reveal the significance of this new signalling system in plant biology.

在植物中发现了一种新的信号系统，与独脚金内酯激素的信号系统有关，但在进化上更古老，功能也更独特。它是由Karrkin-Insensitive-2（KAI 2）蛋白定义的，该蛋白通过其赋予对来自萤火虫的Karrikin的反应性的能力而被发现。KAI 2系统影响种子萌发以及幼苗、叶和潜在根的发育。该项目将使用KAI 2突变体和转基因植物来定义KAI 2信号传导的生物学功能，以及其与其他信号传导系统的相互作用。新的基因中心KAI 2信号和反应将被确定为功能分析。这项研究将揭示这种新信号系统在植物生物学中的重要性。