ArticleThe Plant cell2022
AUXIN RESPONSE FACTOR7 integrates gibberellin and auxin signaling via interactions between DELLA and AUX/IAA proteins to regulate cambial activity in poplar.
Article in The Plant cell, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 57 papers.
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Who cites it
57 citing papers in PubMed, 108 citations in OpenAlex.
- Genome-Wide Characterization of the DELLA Gene Family inBiology · 2026Article
- A potential role for DELLA signaling in global treeline formation.The New phytologist · 2026Review
- Targeting LUX1 to Enhance Wood Biomass Production by Delaying Seasonal Growth Cessation in Populus Trees.Plant, cell & environment · 2026Article
- Tree Species Diversity Enhances Woody Biomass Production by Promoting Xylem Fiber Cell Number and Wall Thickness.Plant, cell & environment · 2026Article
- Towards an integrated molecular understanding of plant hormones.Journal of integrative plant biology · 2026Review
- Genetic regulation of stem elongation and thickening in ornamental plants: a review.Horticulture research · 2026Article
- ARF6 integrates auxin and gibberellin signaling to promote stone cell lignification in pear via the HB49-MYB169 module.The New phytologist · 2026Article
- Endogenous Multilayer Control of Cambial Stem Cells and Its Consequences for Wood Formation.Plants (Basel, Switzerland) · 2026Review
- ABSCISIC ACID-INSENSITIVE 5 (ABI5) Orchestrates Seasonal Growth Cessation and Wood Formation Inhibition inPlants (Basel, Switzerland) · 2026Article
- Molecular mechanisms of root expansion in medicinal plants.Frontiers in plant science · 2026Review
- Auxin-rhizomicrobiome interactions as a driver of climate-resilient root architecture: a conceptual framework for sustainable agriculture.Frontiers in plant science · 2026Review
- Coordinated Auxin-Cytokinin-Nitrogen Signaling Orchestrates Root Suckering in Populus.International journal of molecular sciences · 2025Article
- "Bud to bloom"-hormonal coordination in floral initiation.Plant biology (Stuttgart, Germany) · 2025Review
- PagMIR166c targets PagECH2 to regulate cambial differentiation into secondary xylem, cell expansion, and lignin deposition via different auxin signaling pathways in poplar stems.The New phytologist · 2025Article
- Natural variation in PtobZIP18 confers the trade-off between stem growth and drought tolerance in Populus.Plant biotechnology journal · 2025Article
- SC35-mediated bZIP49 splicing regulates K⁺ channel AKT1 for salt stress adaptation in poplar.Nature communications · 2025Article
- Article
- The developmental transcriptome dynamics of current-year shoot utilized as scion in Camellia chekiangoleosa.BMC plant biology · 2025Article
- The key metabolic pathway of roots and leaves responses in Arachis hypogaea under Al toxicity stress.BMC plant biology · 2025Article
- The auxin-PLETHORA 5 module regulates wood fibre development in Populus tomentosa.Nature plants · 2025Article
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Authors and funding
10 authors at 1 institution in 3 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Cambial development in the stems of perennial woody species is rigorously regulated by phytohormones. Auxin and gibberellin (GA) play crucial roles in stimulating cambial activity in poplar (Populus spp.). In this study, we show that the DELLA protein REPRESSOR of ga1-3 Like 1 (RGL1), AUXIN RESPONSE FACTOR 7 (ARF7), and Aux/INDOLE-3-ACETIC ACID 9 (IAA9) form a ternary complex that mediates crosstalk between the auxin and GA signaling pathways in poplar stems during cambial development. Biochemical analysis revealed that ARF7 physically interacts with RGL1 and IAA9 through distinct domains. The arf7 loss-of-function mutant showed markedly attenuated responses to auxin and GA, whereas transgenic poplar plants overexpressing ARF7 displayed strongly improved cambial activity. ARF7 directly binds to the promoter region of the cambial stem cell regulator WOX4 to modulate its expression, thus integrating auxin and GA signaling to regulate cambial activity. Furthermore, the direct activation of PIN-FORMED 1 expression by ARF7 in the RGL1-ARF7-IAA9 module increased GA-dependent cambial activity via polar auxin transport. Collectively, these findings reveal that the crosstalk between auxin and GA signaling mediated by the RGL1-ARF7-IAA9 module is crucial for the precise regulation of cambial development in poplar.
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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.