JOURNAL ARTICLE

Ubiquitination of the PpMADS2 transcription factor controls linalool production during UV-B irradiation in detached peach fruit.

  • Published In: Plant Physiology, 2025, v. 198, n. 1. P. 1 1 of 3

  • Database: Academic Search Ultimate 2 of 3

  • Authored By: Wei, Chunyan; Yang, Huizhen; Ye, Bingbing; Wei, Wei; Shan, Wei; Chen, Jianye; Chen, Kunsong; Li, Xian; Deng, Zhiping; Zhang, Bo 3 of 3

Abstract

This article investigates how ultraviolet-B (UV-B) irradiation affects the biosynthesis of the flavor-related monoterpene linalool in detached peach (Prunus persica L. Batsch) fruit. The study identifies PpMADS2, a MADS-box transcription factor, as a positive regulator of linalool synthesis through direct activation of terpene synthase 1 (PpTPS1). UV-B exposure reduces PpMADS2 protein levels via ubiquitination and subsequent 26S proteasome-mediated degradation, a process largely dependent on the E3 ubiquitin ligase PpCOP1, which interacts physically with PpMADS2. Multiomics analyses reveal that the PpCOP1–PpMADS2–PpTPS1 module governs linalool production under UV-B, linking light signaling pathways to fruit flavor quality regulation.

Additional Information

  • Source:Plant Physiology. 2025/05, Vol. 198, Issue 1, p1
  • Document Type:Article
  • Subject Area:Nutrition and Dietetics
  • Publication Date:2025
  • ISSN:0032-0889
  • DOI:10.1093/plphys/kiaf159
  • Accession Number:187169472
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