ArticlePlant physiology2021
A network of stress-related genes regulates hypocotyl elongation downstream of selective auxin perception.
Article in Plant physiology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
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8 citing papers in PubMed, 15 citations in OpenAlex.
- Network stress: a wiring diagram of whole stress genes.Horticulture research · 2026Article
- Genetic Variability of Gene Expression in Tomato Fruits Ripened on and off the Vine: Cis-Regulatory Elements Associated with Differential Transcription Patterns in the Most Discrepant Variety.Plants (Basel, Switzerland) · 2025Article
- RACK1A positively regulates opening of the apical hook inProceedings of the National Academy of Sciences of the United States of America · 2025Article
- Expression analyses of sweet cherry AUX/IAAs and involvements of PavAUX/IAA9/11 in regulating fruitlet abscission.Plant cell reports · 2025Article
- PlZAT10 binds to the ABA catabolism gene PlCYP707A2 promoter to mediate seed dormancy release in Paeonia lactiflora.Plant cell reports · 2024Article
- Plant cuticles repress organ initiation and development during skotomorphogenesis in Arabidopsis.Plant communications · 2024Article
- SnRK2.10 kinase differentially modulates expression of hub WRKY transcription factors genes under salinity and oxidative stress inFrontiers in plant science · 2023Article
- HISTONE DEACETYLASE 9 transduces heat signal in plant cells.Proceedings of the National Academy of Sciences of the United States of America · 2022Article
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Authors and funding
9 authors at 3 institutions in 3 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The plant hormone auxin, a master coordinator of development, regulates hypocotyl elongation during seedling growth. We previously identified the synthetic molecule RubNeddin 1 (RN1), which induces degradation of the AUXIN/INDOLE-3-ACETIC ACID (AUX/IAA) transcriptional repressors INDOLE-3-ACETIC ACID-INDUCIBLE3 (IAA3) and IAA7 in planta and strongly promotes hypocotyl elongation. In the present study, we show that despite the structural similarity of RN1 to the synthetic auxin 2,4-dichlorophenoxyacetic-acid (2,4-D), direct treatments with these compounds in Arabidopsis (Arabidopsis thaliana) result in distinct effects, possibly due to enhanced uptake of RN1 and low-level, chronic release of 2,4-D from RN1 in planta. We confirm RN1-induced hypocotyl elongation occurs via specific TRANSPORT INHIBITOR RESISTANT1 (TIR1)/AUXIN SIGNALING F-BOX (AFB) receptor-mediated auxin signaling involving TIR1, AFB2, and AFB5. Using a transcriptome profiling strategy and candidate gene approach, we identify the genes ZINC FINGER OF ARABIDOPSIS THALIANA10 (ZAT10), ARABIDOPSIS TOXICOS EN LEVADURA31 (ATL31), and WRKY DNA-BINDING PROTEIN33 (WRKY33) as being rapidly upregulated by RN1, despite being downregulated by 2,4-D treatment. RN1-induced expression of these genes also occurs via TIR1/AFB-mediated auxin signaling. Our results suggest both hypocotyl elongation and transcription of these genes are induced by RN1 via the promoted degradation of the AUX/IAA transcriptional repressor IAA7. Moreover, these three genes, which are known to be stress-related, act in an inter-dependent transcriptional regulatory network controlling hypocotyl elongation. Together, our results suggest ZAT10, ATL31, and WRKY33 take part in a common gene network regulating hypocotyl elongation in Arabidopsis downstream of a selective auxin perception module likely involving TIR1, AFB2, and AFB5 and inducing the degradation of IAA7.
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