Boosting C4 photosynthesis to climate proof crop yields

促进 C4 光合作用以适应气候变化的作物产量

• 批准号: DP230100175
• 负责人: Dr Robert Sharwood
• 金额: $ 33.99万
• 依托单位: Western Sydney University
• 依托单位国家: 澳大利亚
• 项目类别: Discovery Projects
• 财政年份: 2023
• 资助国家: 澳大利亚
• 起止时间: 2023-01-01 至 2025-12-31
• 项目状态: 未结题
• 来源: https://dataportal.arc.gov.au/RGS/Web/Grants/DP230100175
• 关键词: Boosting; C4; photosynthesis; climate; proof

Building next generation C4 crops, such as maize, sugarcane and sorghum, to cope with drought and heat stress is requisite to ensure the supply of food and fodder. Here we will increase the content and / or catalytic efficiency of the primary carboxylase of C4 photosynthesis (PEPC) that supplies CO2 to the carbon concentrating mechanism and ensures high photosynthetic rates. We will develop new SynBio tools to create and test novel PEPC isoforms with desirable properties. Ultimately, the project aims to identify isoforms that improve plant fitness under stress conditions. Optimising PEPC activity will provide next generation solutions to improve water balance and carbon assimilation to keep C4 crops productive under future climates.

培育下一代C4作物，如玉米、甘蔗和高粱，以科普干旱和高温胁迫，是确保粮食和饲料供应的必要条件。在这里，我们将增加C4光合作用的初级羧化酶（PEPC）的含量和/或催化效率，该初级羧化酶为碳浓缩机制提供CO2并确保高光合速率。我们将开发新的SynBio工具，以创建和测试具有理想特性的新型PEPC异构体。最终，该项目旨在确定在胁迫条件下提高植物适应性的同种型。优化PEPC活动将提供下一代解决方案，以改善水平衡和碳同化，以保持C4作物在未来气候下的生产力。