High-yielding rice Takanari has superior photosynthetic response to a commercial rice Koshihikari under fluctuating light.

ABSTRACT: Leaves within crop canopies experience variable light over the course of a day, which greatly affects photosynthesis and crop productivity. Little is known about the mechanisms of the photosynthetic response to fluctuating light and their genetic control. Here, we examined gas exchange, metabolite levels, and chlorophyll fluorescence during the photosynthetic induction response in an Oryza sativa indica cultivar with high yield (Takanari) and a japonica cultivar with lower yield (Koshihikari). Takanari had a faster induction response to sudden increases in light intensity than Koshihikari, as demonstrated by faster increases in net CO2 assimilation rate, stomatal conductance, and electron transport rate. In a simulated light regime that mimicked a typical summer day, the faster induction r

SUBMITTER: Adachi S 

PROVIDER: S-EPMC6793460 | biostudies-literature | 2019 Oct

REPOSITORIES: biostudies-literature