An auxin response factor regulates tiller angle and shoot gravitropism by directly activating related gene expression in rice.

ABSTRACT:

Introduction

The angle of tillers is crucial for shaping plant architecture, which in turn affects grain yield of rice. The formation of tiller angle is associated with the asymmetrical distribution and polar transport of auxin. However, the roles of auxin signaling in regulating the development of tiller angle in rice remain unclear.

Objective

In this study, we discovered that Oryza sativa Auxin Response Factor 5 (OsARF5) acts as a key regulator of tiller angle development in rice.

Methods

The bta3-1 mutant was obtained through using chemical mutagenesis. The BTA3 gene was isolated by using a map-based positional cloning method. The differentially expressed genes were identified and examined through quantitative RT-PCR and high-throughput mRNA sequencing. The protein

SUBMITTER: Hu Y 

PROVIDER: S-EPMC12684959 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature