Improving rice eating and cooking quality by enhancing endogenous expression of a nitrogen-dependent floral regulator.

ABSTRACT: Improving rice eating and cooking quality (ECQ) is one of the primary tasks in rice production to meet the rising demands of consumers. However, improving grain ECQ without compromising yield faces a great challenge under varied nitrogen (N) supplies. Here, we report the approach to upgrade rice ECQ by native promoter-controlled high expression of a key N-dependent floral and circadian clock regulator Nhd1. The amplification of endogenous Nhd1 abundance alters rice heading date but does not affect the entire length of growth duration, N use efficiency and grain yield under both low and sufficient N conditions. Enhanced expression of Nhd1 reduces amylose content, pasting temperature and protein content while increasing gel consistence in grains. Metabolome and transcriptome analyses reveale

SUBMITTER: Zhang Y 

PROVIDER: S-EPMC10651157 | biostudies-literature | 2023 Dec

REPOSITORIES: biostudies-literature