LG5, a Novel Allele of EUI1, Regulates Grain Size and Flag Leaf Angle in Rice.

ABSTRACT: Grain size and flag leaf angle are two important traits that determining grain yield in rice. However, the mechanisms regulating these two traits remain largely unknown. In this study, a rice long grain 5 (lg5) mutant with a large flag leaf angle was identified, and map-based cloning revealed that a single base substitution followed by a 2 bp insertion in the LOC_Os05g40384 gene resulted in larger grains, a larger flag leaf angle, and higher plant height than the wild type. Sequence analysis revealed that lg5 is a novel allele of elongated uppermost internode-1 (EUI1), which encodes a cytochrome P450 protein. Functional complementation and overexpression tests showed that LG5 can rescue the bigger grain size and larger flag leaf angle in the

SUBMITTER: Li Z 

PROVIDER: S-EPMC9921835 | biostudies-literature | 2023 Feb

REPOSITORIES: biostudies-literature