DetailsPosted 09-Feb-26
Location Durham, North Carolina
Type Full Time
Area of Focus Biochemistry
Gene Regulation
Signals and Responses
Salary Details
Postdoctoral scholar salary will follow Duke University guidelines.
Required Education
Doctorate
Green Revolution DELLA Proteins - Functional Analysis and Regulatory Mechanisms
Apostdoctoral research position is available immediately to join an interdisciplinary project focused on gibberellin GA signaling and transcriptional regulation in plants. We seek a highly motivated researcher with a strong background in protein chemistry, molecular genetics, genomics, and/or plant development.
GA perception by its nuclear receptor GIBBERELLIN INSENSITIVE DWARF1 GID1 triggers polyubiquitination and proteasomal degradation of the master growth regulators DELLA proteins via the SCFSLY1GID2 E3 ubiquitin ligase complex. DELLA genes are known as Green Revolution" genes as dominant mutations confer semi-dwarfism and significantly increased crop yields through reduced GA responsiveness.
DELLA proteins function as central signaling hubs interacting with diverse transcription factors TFs to integrate hormonal and developmental signals. Recent studies show that DELLAs associate with both activated and repressed promoters and that TF-DELLA-histone H2A complexes at target chromatin are essential for their regulatory activity. However, how DELLAs achieve interaction specificity and act as transcriptional coactivators or corepressors at distinct genes remains unclear.
This project uses structural biochemical and genomics approaches to address these questions and uncover fundamental mechanisms of plant growth regulation.
Related recent publications:
• Huang X, Tian H, Park J, Oh DH, Hu J, Zentella R, Qiao H, Dassanayake M, Sun TP. 2023. The master growth regulator DELLA binding to histone H2A is essential for DELLA-mediated global transcription regulation. Nat Plants 9, 1291-305. • Huang X, Zentella R, Park J, Reser L, Bai DL, Ross MM, Shabanowitz J, Hunt DF, Sun TP. 2024. Phosphorylation activates master growth regulator DELLA by promoting histone H2A binding at chromatin in Arabidopsis. Nat Commun 15, 7694. • Dahal P, Wang Y, Hu J, Park J, Forker K, Zhang ZL, Sharma K, Borgnia MJ, Sun TP, Zhou P. 2025. Structural insights into proteolysis-dependent and -independent suppression of the master regulator DELLA by the gibberellin receptor. Proc Natl Acad Sci USA 122 e2511012. • Shani E, Hedden P, Sun TP. 2024. Highlights in gibberellin research A tale of the dwarf and the slender. Plant Physiol 195, 111-34. • Alabadi D, Sun TP. 2025. Green Revolution DELLA proteins Functional analysis and regulatory mechanisms. Annu Rev Plant Biol 76, 373-400.
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Application Instructions
Please send by email with "Postdoc application" in the subject line a cover letter containing your research summary and career goals, curriculum vitae, and names, email addresses, and phone numbers of three references to Tai-ping Sun at tpsduke.edu.
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Job Match
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Connections working at Professor Tai-ping Sun Department of Biology Duke University: https://careers.awra.org/jobs/22034772/postdoctoral-scholar-position-in-plant-hormone-signaling
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