Characterization of the 'Oat-Like Rice' Caused by a Novel Allele OsMADS1^Olr Reveals Vital Importance of OsMADS1 in Regulating Grain Shape in Oryza sativa L.

ABSTRACT:

Background

Grain shape is a critical agronomic trait affecting grain yield and quality. Exploration and functional characterization of grain shape-related genes will facilitate rice breeding for higher quality and yield.

Results

Here, we characterized a recessive mutant named Oat-like rice for its unique grain shape which highly resembles oat grains. The Oat-like rice displayed abnormal floral organs, an open hull formed by remarkably elongated leafy lemmas and paleae, occasionally formed conjugated twin brown rice, an aberrant grain shape and a low seed setting rate. By map-based cloning, we discovered that Oat-like rice harbors a novel allele of OsMADS1 gene (OsMADS1^Olr), which has a spontaneous point mutation that causes the substitution of an amino acid that i

SUBMITTER: Li P 

PROVIDER: S-EPMC7561663 | biostudies-literature | 2020 Oct

REPOSITORIES: biostudies-literature