Photoperiodic flowering regulators are required for nitrogen-dependent flowering delay in rice under long-day condition.

ABSTRACT: Plants recognize environmental information as external signals, which they use to coordinate developmental processes for their survival and reproduction. In the agricultural production of rice, the primary staple crop worldwide, soil nitrogen (N) is an important environmental factor. Heading date, a key trait for rice quality and yield, is modulated by N fertilisation; however, the molecular mechanisms underlying N-dependent flowering regulation remain unclear. Here, we conduct a genome-wide association study using differences in heading dates of Japanese rice cultivars grown under different N conditions. We identify Hd6, which is known to be involved in photoperiodic flowering regulation, as a key signalling component in the phenotypic variation observed under various N conditions. Furthe

SUBMITTER: Yoshida H 

PROVIDER: S-EPMC12534406 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature