The role of the R2R3-MYB gene family in stomatal signalling

R2R3-MYB 基因家族在气孔信号传导中的作用

• 批准号: BB/D010020/1
• 负责人: Alistair Hetherington
• 金额: $ 26.27万
• 依托单位: University of Bristol
• 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%2FD010020%2F1
• 关键词: role; R2R3; MYB; gene; family

Stomata are pores found in the surface of leaves. By controlling the aperture of the stomatal pore, plants are able to optimise the uptake of carbon dioxide for photosynthesis and the loss of water by the plant. The stomatal pore is bounded by two cells called guard cells. When these swell the pore gapes open and carbon dioxide uptake and water loss takes place. Alternatively, when the cells shrink the uptake and loss of gas is prevented. Controlling the exchange of gasses between the plant and the atmosphere is very important to the plant because it allows the plant to conserve water in times of drought and also to maximise carbon dioxide uptake to support growth and development. Stomata integrate signals from the environment (light intensity, atmospheric carbon dioxide, humidity and plant hormones) to set the optimum stomatal aperture to suit the prevailing environmental conditions. Recently we have discovered a new protein that helps to control stomatal movement. This protein is called a transcription factor and it belongs to a large family of related transcription factors called MYBs. The objective of this application is to determine which of the other MYB family members are also involved in the control os stomatal aperture. These proteins are interesting as they help to control stomatal aperture so understanding how they work might help us to breed crops better equipped to tolerate global warming and environmental stresses such as drought.

气孔是叶子表面的气孔。通过控制气孔的孔径，植物能够优化植物光合作用二氧化碳的吸收和水分的流失。气孔由两个称为保卫细胞的细胞界定。当它们膨胀时，毛孔张开，二氧化碳吸收和水分流失。或者，当细胞收缩时，气体的吸收和损失就会被阻止。控制植物和大气之间的气体交换对植物来说非常重要，因为它可以让植物在干旱时保存水分，并最大限度地吸收二氧化碳以支持生长和发育。气孔整合来自环境的信号（光强度、大气二氧化碳、湿度和植物激素），以设置最佳气孔孔径以适应当前的环境条件。最近我们发现了一种有助于控制气孔运动的新蛋白质。这种蛋白质称为转录因子，属于相关转录因子大家族（MYB）。本申请的目的是确定哪些其他 MYB 家族成员也参与控制口气孔孔径。这些蛋白质很有趣，因为它们有助于控制气孔孔径，因此了解它们的工作原理可能有助于我们培育出更好的作物来耐受全球变暖和干旱等环境压力。

项目成果

Biological approaches to global environment change mitigation and remediation.

全球环境变化减缓和修复的生物方法。

• DOI: 10.1016/j.cub.2009.06.012
• 发表时间: 2009
• 期刊: CB
• 作者: Woodward FI

The Stomatal Response to Reduced Relative Humidity Requires Guard Cell-Autonomous ABA Synthesis

• DOI: 10.1016/j.cub.2012.11.022
• 发表时间: 2013-01-07
• 期刊: CURRENT BIOLOGY
• 影响因子: 9.2
• 作者: Bauer, Hubert;Ache, Peter;Hedrich, Rainer
• 通讯作者: Hedrich, Rainer