High Temperature-Induced Expression of Rice α-Amylases in Developing Endosperm Produces Chalky Grains.

ABSTRACT: Global warming impairs grain filling in rice and reduces starch accumulation in the endosperm, leading to chalky-appearing grains, which damages their market value. We found previously that high temperature-induced expression of starch-lytic α-amylases during ripening is crucial for grain chalkiness. Because the rice genome carries at least eight functional α-amylase genes, identification of the α-amylase(s) that contribute most strongly to the production of chalky grains could accelerate efficient breeding. To identify α-amylase genes responsible for the production of chalky grains, we characterized the histological expression pattern of eight α-amylase genes and the influences of their overexpression on grain appearance and carbohydrate components through a series of experiments with tra

SUBMITTER: Nakata M 

PROVIDER: S-EPMC5723670 | biostudies-literature | 2017

REPOSITORIES: biostudies-literature