In Arabidopsis, AUXIN RESPONSE FACTOR 3 (ARF3) belongs to the auxin response factor (ARF) family that regulates the expression of auxin-responsive genes. ARF3 is known to function in leaf polarity specification and gynoecium patterning. In this study, we discovered a previously unknown role for ARF3 in floral meristem (FM) determinacy through the isolation and characterization of a mutant of ARF3 that enhanced the FM determinacy defects of agamous (ag)-10, a weak ag allele. Central players in FM determinacy include WUSCHEL (WUS), a gene critical for FM maintenance, and AG and APETALA2 (AP2), which regulate FM determinacy by repression and promotion of WUS expression, respectively. We showed that ARF3 confers FM determinacy through repression of WUS expression, and associates with the WUS locus in part in an AG-dependent manner. We demonstrated that ARF3 is a direct target of AP2 and partially mediates AP2's function in FM determinacy. ARF3 exhibits dynamic and complex expression patterns in floral organ primordia; altering the patterns spatially compromised FM determinacy. This study uncovered a role for ARF3 in FM determinacy and revealed relationships among genes in the genetic network governing FM determinacy.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4215321 | PMC |
| http://dx.doi.org/10.1111/tpj.12658 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Genome-Wide Identification and In Silico Expression Analysis of Gene Family in (Citrus) in Response to Abiotic Stress.
Plants (Basel)
January 2025
Department of Plant Sciences, College of Agricultural and Marine Sciences, Sultan Qaboos University, Muscat 123, Oman.
The (citrus) plant produces various phytohormones due to the significant involvement of the carotenoid cleavage oxygenase () gene family in its growth and development. genes can be divided into two main categories: (9-cis-epoxy carotenoid dioxygenase), responsible for abscisic acid (ABA) production, and (carotenoid cleavage dioxygenase), involved in pigment and strigolactone formation. To better understand the roles and positions of gene members in relation to these hormones, researchers analyzed the clementine genome.
View Article and Find Full Text PDFDressed Up to the Nines: The Interplay of Phytohormones Signaling and Redox Metabolism During Plant Response to Drought.
Plants (Basel)
January 2025
Departamento de Genética, Instituto de Biologia, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-902, Brazil.
Plants must effectively respond to various environmental stimuli to achieve optimal growth. This is especially relevant in the context of climate change, where drought emerges as a major factor globally impacting crops and limiting overall yield potential. Throughout evolution, plants have developed adaptative strategies for environmental stimuli, with plant hormones and reactive oxygen species (ROS) playing essential roles in their development.
View Article and Find Full Text PDFThe Identification of Auxin Response Factors and Expression Analyses of Different Floral Development Stages in Roses.
Genes (Basel)
January 2025
College of Horticulture, Shanxi Agricultural University, Jinzhong 030801, China.
() are important in plant growth and development, especially flower development. However, there is limited research on the comprehensive identification and characterization of genes in roses. We employed bioinformatics tools to identify the genes of roses.
View Article and Find Full Text PDFTranscriptional Analysis of Tissues in Tartary Buckwheat Seedlings Under IAA Stimulation.
Genes (Basel)
December 2024
School of Life Science and Technology, Wuhan Polytechnic University, Wuhan 430023, China.
, commonly referred to as tartary buckwheat, is a cultivated medicinal and edible crop renowned for its economic and nutritional significance. Following the publication of the buckwheat genome, research on its functional genomics across various growth environments has gradually begun. Auxin plays a crucial role in many life processes.
View Article and Find Full Text PDFHDC1 Promotes Primary Root Elongation by Regulating Auxin and K Homeostasis in Response to Low-K Stress.
Biology (Basel)
January 2025
Hunan Provincial Key Laboratory of Phytohormones and Growth Development, College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha 410128, China.
Plants frequently encounter relatively low and fluctuating potassium (K) concentrations in soil, with roots serving as primary responders to this stress. Histone modifications, such as de-/acetylation, can function as epigenetic markers of stress-inducible genes. However, the signaling network between histone modifications and low-K (LK) response pathways remains unclear.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!