Transcriptional corepressor OsTPR1 regulates tillering and lateral root development in rice.

ABSTRACT: TOPLESS (TPL) and TOPLESS-Related (TPR) corepressors are key regulatory proteins that interact with a variety of transcription factors to form specific complexes, thereby modulating a wide range of signaling pathways and metabolic processes. This study explored the function of the rice TPR gene OsTPR1. Transgenic rice lines overexpressing OsTPR1 (OsTPR1-Ox) exhibited reduced lateral root density, whereas OsTPR1 RNA interference lines (OsTPR1-Ri) showed increased lateral root density. To gain further insight, these transgenic lines were crossed with the DR5::GUS auxin reporter line. In 7-day-old seedlings, lateral root formation occurred in the differentiation zone of seminal roots, with GUS staining prominently localized in the lateral root primordia of the DR5::GUS/OsTPR1-Ri line. Similar

SUBMITTER: Hou YH 

PROVIDER: S-EPMC12280221 | biostudies-literature | 2025 Jul

REPOSITORIES: biostudies-literature