Vacuolar compartments preserved among loosely packed amyloplasts account for heat-induced rice chalky formation under low nitrogen conditions.

ABSTRACT:

Main conclusion

The regulation of vacuolar compartmentation and protein synthesis during the early ripening stage might be responsible for rice appearance at high temperature. High temperature at the early ripening stage disrupts protein synthesis to arrest starch and storage protein accumulation in the rice endosperms, leading to the occurrence of chalky kernels (CK), such as white-back kernels (WBK) and basal-white kernels (BWK). In contrast, adequate nitrogen (N) application might sustain protein synthesis and reduce chalky kernels. These processes might be associated with the regulation of vacuolar compartmentation and protein synthesis during heat adaptation, yet the exact cellular dynamics behind the reduction of endosperm air space when applying N have not been examined in t

SUBMITTER: Hatakeyama Y 

PROVIDER: S-EPMC12350539 | biostudies-literature | 2025 Aug

REPOSITORIES: biostudies-literature