Fine Mapping of a Novel defective glume 1 (dg1) Mutant, Which Affects Vegetative and Spikelet Development in Rice.

ABSTRACT: In cereal crops, vegetative and spikelet development play important roles in grain yield and quality, but the genetic mechanisms that control vegetative and spikelet development remain poorly understood in rice. Here, we identified a new rice mutant, defective glume 1 (dg1) mutant from cultivar Zhonghua11 after ethyl methanesulfonate treatment. The dg1 mutant displayed the dwarfism with small, rolled leaves, which resulted from smaller cells and more bulliform cells. The dg1 mutant also had an enlarged leaf angle and defects in brassinosteroid signaling. In the dg1 mutant, both the rudimentary glume and sterile lemma (glumes) were transformed into lemma-like organ and acquired the lemma identity. Additionally, the dg1 mutant produced slender grains

SUBMITTER: Yu H 

PROVIDER: S-EPMC5382164 | biostudies-literature | 2017

REPOSITORIES: biostudies-literature