The impact of modifying photosystem antenna size on canopy photosynthetic efficiency-Development of a new canopy photosynthesis model scaling from metabolism to canopy level processes.

ABSTRACT: Canopy photosynthesis (A_c ) describes photosynthesis of an entire crop field and the daily and seasonal integrals of A_c positively correlate with daily and seasonal biomass production. Much effort in crop breeding has focused on improving canopy architecture and hence light distribution inside the canopy. Here, we develop a new integrated canopy photosynthesis model including canopy architecture, a ray tracing algorithm, and C₃ photosynthetic metabolism to explore the option of manipulating leaf chlorophyll concentration ([Chl]) for greater A_c and nitrogen use efficiency (NUE). Model simulation results show that (a) efficiency of photosystem II increased when [Chl] was decreased by decreasing antenna size and (b) the light received by leaves at t

SUBMITTER: Song Q 

PROVIDER: S-EPMC5724688 | biostudies-literature | 2017 Dec

REPOSITORIES: biostudies-literature