The OsEIL1-OsERF115-target gene regulatory module controls grain size and weight in rice.

ABSTRACT: Grain size is one of the essential determinants of rice yield. Our previous studies revealed that ethylene plays an important role in grain-size control; however, the precise mechanism remains to be determined. Here, we report that the ethylene response factor OsERF115 functions as a key downstream regulator for ethylene-mediated grain development. OsERF115 encodes an AP2/ERF-type transcriptional factor that is specifically expressed in young spikelets and developing caryopses. Overexpression of OsERF115 significantly increases grain length, width, thickness and weight by promoting longitudinal elongation and transverse division of spikelet hull cells, as well as enhancing grain-filling activity, whereas its knockout mutations lead to the opposite effects, suggesting that OsERF115 positive

SUBMITTER: Liu C 

PROVIDER: S-EPMC9342608 | biostudies-literature | 2022 Aug

REPOSITORIES: biostudies-literature