Alternative Oxidase to Optimise Plant Growth and Stress Tolerance

优化植物生长和抗逆性的替代氧化酶

• 批准号: DP200102452
• 负责人: Prof James Whelan
• 金额: $ 30.54万
• 依托单位: La Trobe University
• 依托单位国家: 澳大利亚
• 项目类别: Discovery Projects
• 财政年份: 2020
• 资助国家: 澳大利亚
• 起止时间: 2020-01-01 至 2022-12-31
• 项目状态: 已结题
• 来源: https://dataportal.arc.gov.au/RGS/Web/Grants/DP200102452
• 关键词: Alternative; Oxidase; Optimise; Plant; Growth

Biomass accumulation in plants is the balance of CO2 fixed into carbohydrates through photosynthesis and carbohydrate burned (respired), ~ 50% of fixed CO2, to fuel growth. Plants possess energy conserving and non-conserving respiratory pathways. The alternative energy non-conserving pathway appears wasteful but is necessary for plant tolerance to adverse growth conditions. Our research has achieved modification of the alternative respiratory pathway that positively impacts plant growth. We will dissect the mechanism(s) of how the alternative respiratory pathway stimulates growth, from a molecular level to whole plant physiology, answering a long-standing question of the role of the alternative respiratory pathway in plant cell biology.

植物中的生物量积累是通过光合作用固定为碳水化合物的CO2和燃烧（呼吸）碳水化合物的平衡，约50%的固定CO2用于燃料生长。植物具有能量守恒和非守恒呼吸途径。替代的能量不节约途径似乎是浪费的，但对于植物耐受不利的生长条件是必要的。我们的研究已经实现了对替代呼吸途径的修改，这对植物生长产生了积极影响。我们将剖析替代呼吸途径如何刺激生长的机制，从分子水平到整个植物生理学，回答替代呼吸途径在植物细胞生物学中的作用的长期问题。