Tools for quantifying carbon assimilation and understanding plant adaptation to environmental stress and climate change

量化碳同化和了解植物对环境压力和气候变化的适应的工具

• 批准号: RTI-2021-00677
• 负责人: Constabel, CPeter
• 金额: $ 3.94万
• 依托单位: University of Victoria
• 依托单位国家: 加拿大
• 项目类别: Research Tools and Instruments
• 财政年份: 2020
• 资助国家: 加拿大
• 起止时间: 2020-01-01 至 2021-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=717999
• 关键词: Tools; quantifying; carbon; assimilation; understanding

Climate change will impact forests dramatically and will lead to more stressful conditions for trees and other species. Thus it is imperative that we understand the responses and adaptations of forest trees, in order to adapt our strategies for tree breeding and forest management. A central tool in plant stress physiology is the measurement of carbon assimilation and water loss during photosynthesis, as photosynthetic performance provides a direct measure of plant adaptation. We are therefore requesting funding for purchase of a gas exchange analyzer (photosynthesis system) for studies of the impact of both abiotic and biotic stresses on forest trees and shrubs. This instrument measures CO2 uptake and water loss, with the ability to control the light, temperature and humidity in a chamber. The instrument is portable and suitable for high-throughput phenotyping in both greenhouse and field settings, and is compatible with both broad leaved and conifer species. The requested gas exchange analyzer will be used for research supported by UVic's Centre for Forest Biology and collaborating laboratories with diverse projects that aim to understand the mechanism of stress resistance or which investigate genetic variation in these traits in economically important species. It will also be used to investigate the physiological response of arctic shrubs to dramatic climate warming. The instrument will be used to study cold and drought tolerance, resistance to pathogens and insect herbivores, the interaction of soil moisture and temperature stress, and the importance of phytochemicals and tannins for oxidative stress tolerance. The gas exchange analyser will be managed by the Centre for Forest Biology's technical staff, who will also oversee training and ensure proper maintenance of the instrument.

气候变化将对森林产生巨大影响，并将给树木和其他物种带来更大的压力。因此，我们必须了解森林树木的反应和适应，以便调整我们的树木育种和森林管理策略。植物胁迫生理学的一个核心工具是测量光合作用过程中的碳同化和水分损失，因为光合作用性能提供了植物适应的直接测量。因此，我们请求资助购买气体交换分析仪（光合作用系统），用于研究非生物和生物胁迫对森林树木和灌木的影响。该仪器测量二氧化碳吸收和水分流失，并能控制室内的光线、温度和湿度。该仪器是便携式的，适合在温室和田间环境中进行高通量表型分析，并且与阔叶和针叶树物种兼容。所要求的气体交换分析仪将用于由维多利亚大学森林生物学中心支持的研究，以及与各种项目合作的实验室，旨在了解抗逆性的机制，或研究经济上重要物种的这些性状的遗传变异。它还将用于研究北极灌木对急剧气候变暖的生理反应。该仪器将用于研究耐寒性和抗旱性、对病原菌和食草昆虫的抗性、土壤水分和温度胁迫的相互作用以及植物化学物质和单宁对抗氧化胁迫的重要性。气体交换分析仪将由森林生物学中心的技术人员管理，他们还将监督培训并确保仪器的适当维护。