CsIREH1 phosphorylation regulates DELLA protein affecting plant height in cucumber (Cucumis sativus)

CsIREH1 phosphorylation regulates DELLA protein affecting plant height in cucumber (Cucumis sativus)

© 2024 The Author(s). New Phytologist © 2024 New Phytologist Foundation.

Bibliographische Detailangaben
Veröffentlicht in:The New phytologist. - 1979. - 245(2025), 4 vom: 02. Feb., Seite 1528-1546
1. Verfasser: Zhao, Hongjiao (VerfasserIn)
Weitere Verfasser: Sun, Piaoyun, Tong, Can, Li, Xiangbao, Yang, Tongwen, Jiang, Yanxin, Zhao, Bosi, Dong, Junyang, Jiang, Biao, Shen, Junjun, Li, Zheng
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2025
Zugriff auf das übergeordnete Werk:The New phytologist
Schlagworte:Journal Article AGC protein kinase CsIREH1 DELLA protein cucumber plant height Plant Proteins Gibberellins
Beschreibung
Zusammenfassung:© 2024 The Author(s). New Phytologist © 2024 New Phytologist Foundation.
Plant height is a critical agronomic trait that affects crop yield, plant architecture, and environmental adaptability. Gibberellins (GAs) regulate plant height, with DELLA proteins acting as key repressors in the GA signaling pathway by inhibiting GA-induced growth. While DELLA phosphorylation is essential for regulating plant height, the precise mechanisms underlying this process remain incompletely understood. In this study, we identified a cucumber mutant with delayed growth, which exhibited reduced sensitivity to GA treatment. Through bulked segregant analysis (BSA-seq) combined with molecular marker linkage analysis, we successfully identified and cloned the gene responsible for the dwarf phenotype, CsIREH1 (INCOMPLETE ROOT HAIR ELONGATION 1), which encodes an AGC protein kinase. Further research revealed that CsIREH1 interacts with and phosphorylates DELLA proteins, specifically targeting CsGAIP and CsGAI2. We propose that IREH1-dependent phosphorylation of DELLA proteins prevents their excessive accumulation, thereby maintaining normal plant growth. Therefore, investigating the role of IREH1-mediated DELLA phosphorylation provides valuable insights and theoretical foundations for understanding how plants regulate growth mechanisms
Beschreibung:Date Completed 27.04.2025
Date Revised 27.04.2025
published: Print-Electronic
Citation Status MEDLINE
ISSN:1469-8137
DOI:10.1111/nph.20309