《生命科学》 2018, 30(10): 1044-1050
摘 要：摘 要：当前作物的冠层光合效率仅仅是理论冠层光能利用效率的30% 甚至更低，提高冠层光能利用效率是未来高光效改良的关键。由于冠层内部光环境和叶片生理状态的巨大差异，三维冠层光合模型是解析控制冠层光合效率的关键因子的重要理论手段。通过光合系统生物学手段，目前一系列提高光线、CO2 供给及改良光合器官效率的手段已经得以明确。在不同作物中，确立改良冠层光合效率的有效途径、建立实现高光效的有效分子模块及其组合方式、建立分子改造的分子工具包及设计工具是当前冠层光合效率研究的核心内容。
Abstract: Abstract: The canopy light use efficiency (Φcan) is less than 30% of the maximal theoretical efficiency in most of the current crops， and improving canopy photosynthetic efficiency is crucial to gain increased crop light use efficiency for greater yields. Due to the high levels of the heterogeneities in both the canopy light microclimate and also the leaf photosynthetic physiological properties at different layers of a canopy， three dimensional canopy
photosynthesis model is a major tool used to analyze limiting factors controlling Φcan. Through photosynthesis systems biology research， a number of options which can enhance the ability of delivering more CO2 and light to photosynthetic apparatus and increase the capacity of the photosynthetic apparatus have been identified. The urgent research tasks needed now to improve Φcan in different crops include testing the effectiveness of different options to improve Φcan， identify molecular modules and their optimal combinations to improve Φcan， and finally to establish a set of molecular tools to facilitate design and engineering Φcan.