DEGENERATED LEMMA (DEL) regulates lemma development and affects rice grain yield.

ABSTRACT: In grass, the lemma is a unique floral organ structure that directly determines grain size and yield. Despite a great deal of research on grain enlargement caused by changes in glume cells, the importance of normal development of the glume for normal grain development has been poorly studied. In this study, we investigated a rice spikelet mutant, degenerated lemma (del), which developed florets with a slightly degenerated or rod-like lemma. More importantly, del also showed a significant reduction in grain length and width, seed setting rate, and 1000-grain weight, which led to a reduction in yield. The results indicate that the mutation of the DEL gene further affects rice grain yield. Map-based cloning shows a single-nucleotide substitution from T to A within

SUBMITTER: Jing Y 

PROVIDER: S-EPMC10073388 | biostudies-literature | 2023 Mar

REPOSITORIES: biostudies-literature