Academic Journal
TaUSP_6D-5 integrates light signalling and heat stress to regulate thermotolerance and developmental transitions in plants.
| Τίτλος: | TaUSP_6D-5 integrates light signalling and heat stress to regulate thermotolerance and developmental transitions in plants. |
|---|---|
| Συγγραφείς: | Singh A; Department of Plant Molecular Biology, University of Delhi South Campus, Benito Juarez Road, New Delhi 110021, India., Sharma AK; Department of Plant Molecular Biology, University of Delhi South Campus, Benito Juarez Road, New Delhi 110021, India., Khurana P; Department of Plant Molecular Biology, University of Delhi South Campus, Benito Juarez Road, New Delhi 110021, India. Electronic address: param@genomeindia.org. |
| Πηγή: | Plant science : an international journal of experimental plant biology [Plant Sci] 2026 Oct; Vol. 371, pp. 113247. Date of Electronic Publication: 2026 Jun 02. |
| Τύπος έκδοσης: | Journal Article |
| Γλώσσα: | English |
| Στοιχεία περιοδικού: | Publisher: Elsevier Ireland Country of Publication: Ireland NLM ID: 9882015 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1873-2259 (Electronic) Linking ISSN: 01689452 NLM ISO Abbreviation: Plant Sci Subsets: MEDLINE |
| Imprint Name(s): | Publication: <2010>- : Shannon, Co. Clare : Elsevier Ireland Original Publication: Shannon [Clare] : Elsevier Scientific Publishers Ireland Ltd., c1985- |
| Ιατρικοί όροι (MeSH): | Triticum*/physiology , Triticum*/genetics , Triticum*/growth & development , Triticum*/metabolism , Thermotolerance*/genetics , Thermotolerance*/physiology , Plant Proteins*/metabolism , Plant Proteins*/genetics , Plant Proteins*/physiology , Heat-Shock Proteins*/metabolism , Heat-Shock Proteins*/genetics , Heat-Shock Response* , Light Signal Transduction*, Arabidopsis/genetics ; Arabidopsis/physiology ; Arabidopsis/growth & development ; Reactive Oxygen Species/metabolism ; Endoplasmic Reticulum/metabolism ; Plants, Genetically Modified ; Gene Expression Regulation, Plant ; Light ; Signal Transduction |
| Περίληψη: | Universal Stress Proteins (USPs) constitute a conserved class of stress-responsive proteins that play important roles in helping plants adapt to adverse environmental conditions, including heat, oxidative stress, and endoplasmic reticulum (ER) stress. However, the molecular mechanisms through which USPs integrate environmental and developmental signalling pathways remain poorly understood. In this study, we characterized the wheat Universal Stress Protein TaUSP_6D-5 and identified it as a potential link between light signalling and thermotolerance. Our results demonstrated that TaUSP_6D-5 is localized to the endoplasmic reticulum and interacts with a wheat Annexin protein, suggesting a role in stress-associated cellular signalling. Overexpression of TaUSP_6D-5 in Arabidopsis thaliana enhanced thermotolerance and reduced reactive oxygen species (ROS) accumulation under heat stress conditions. Promoter analysis further revealed that TaUSP_6D-5 expression is induced independently by ER stress and far-red light treatment. Moreover, transgenic Arabidopsis plants overexpressing TaUSP_6D-5 displayed enhanced hypocotyl elongation in darkness along with altered expression of AtPIF transcripts, indicating its involvement in light-responsive developmental processes. Collectively, these findings suggest that TaUSP_6D-5 functions at the convergence of light and high-temperature signalling pathways and contributes to stress adaptation and environmental signal perception in plants. (Copyright © 2026 Elsevier B.V. All rights reserved.) |
| Competing Interests: | Declaration of Competing Interest The authors declare that they have no competing interests. |
| Contributed Indexing: | Keywords: Heat Stress; Light Signalling; Universal Stress Proteins; Wheat |
| Substance Nomenclature: | 0 (Plant Proteins) 0 (Reactive Oxygen Species) 0 (Heat-Shock Proteins) |
| Entry Date(s): | Date Created: 20260603 Date Completed: 20260808 Latest Revision: 20260808 |
| Update Code: | 20260809 |
| DOI: | 10.1016/j.plantsci.2026.113247 |
| PMID: | 42235688 |
| Βάση Δεδομένων: | MEDLINE |
| ISSN: | 1873-2259 |
|---|---|
| DOI: | 10.1016/j.plantsci.2026.113247 |