摘要
Abstract
Photorespiration,a tightly correlated process with photosynthesis,is initiated by the oxygenation of ribulose-1 ,5-bisphosphate (RuBP),a process catalyzed by RuBP carboxylase/oxygenase.In this reaction,2-phosphoglycolate,a compound toxic to photosynthesis is produced and recycled back to phosphoglycerate (3-PGA),a Calvin cycle intermediate.Because of production of CO2 and NH3 ,and the considerable loss of ener-gy,this cycle is considered a wasteful process.However,under high light intensities,photorespiration could also alleviate photo-inhibition and photo-oxydation by adj ustment of electron flow and consumption of excess energy.The gene cloning of this process could facilitate studies on physiological functions and increase crop yields by modifying key genes.In this article,the process,physiological functions,gene cloning and regulation of this pathway are summarized.关键词
光呼吸途径/生理功能/基因克隆Key words
the process of photorespiration/physiological function/gene cloning分类
农业科技
