Chinese Bulletin of Botany >

2026 , Vol. 61 >Issue 3: 369 - 385

DOI: https://doi.org/10.11983/CBB25169

The Regulatory Network and Mechanism of Plant Floral Organ Development Mediated by Auxin Response Factors

  • Xinyu Liu 1 ,
  • Silan Dai , 1, *
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  • 1 Beijing Laboratory of Urban and Rural Ecological Environment, Beijing Key Laboratory of Ornamental Plants Germplasm Innovation & Molecular Breeding, National Engineering Research Center for Floriculture, College of Landscape Architecture , BeijingForestry University, Beijing 100083, China

Received date: 2025-09-24

  Accepted date: 2026-01-09

  Online published: 2026-01-15

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Abstract

Auxin response factors (ARFs), as core transcription factors in auxin signal transduction, are deeply involved in the entire process of auxin-regulated plant floral organ development. This review summarizes the key roles of ARFs in regulating floral organ differentiation (such as floral primordium initiation and meristem maintenance) and morphogenesis (development of sepals, petals, stamens, carpels, and regulation of organ boundaries) by responding to auxin signals. It also elaborates on the coordinated regulatory mechanism between ARFs and MADS-box genes in the ABCDE model, and reveals the molecular basis of the network formed through post-transcriptional regulation by miRNAs and interactions with hormone signals such as cytokinins, which together maintain the homeostasis of floral development. This provides a theoretical basis for analyzing the molecular mechanism of plant floral development and offers a theoretical foundation for molecular breeding of flowers.

Key words： auxin response factors; auxin signaling; floral organ development; regulatory network

Cite this article

Xinyu Liu , Silan Dai . The Regulatory Network and Mechanism of Plant Floral Organ Development Mediated by Auxin Response Factors[J]. Chinese Bulletin of Botany, 2026 , 61(3) : 369 -385 . DOI: 10.11983/CBB25169

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