The molybdenum cofactor biosynthesis gene, <i>OsCNX1</i>, is essential for seedling development and seed germination in rice.

ABSTRACT: Pre-harvest sprouting (PHS) frequently occurs in rice due to the long spells of rainy weather, and causes severe yield loss and grain quality decrease. Here, we identified one PHS-related gene OsCNX1 cloned from rice PHS mutant, which encoded a molybdenum cofactor (MoCo) biosynthesis enzyme. Genetic complementation indicated OsCNX1 could rescue the PHS and seedling lethal phenotype of the mutant. Expression pattern showed that OsCNX1 was expressed in rice tissue including seedling shoot, culm, blade, and sheath of flag leaf, young panicle, and the seeds at different development stages. Overexpression of OsCNX1 significantly decreased the plant height, and the seed germination of the dormant seeds harvested from fresh panicles, comparing to the wild type (WT). In

SUBMITTER: Lu X 

PROVIDER: S-EPMC10616024 | biostudies-literature | 2023 Nov

REPOSITORIES: biostudies-literature