The AP2/ERF transcription factor PtoERF15 confers drought tolerance via JA-mediated signaling in Populus

The AP2/ERF transcription factor PtoERF15 confers drought tolerance via JA-mediated signaling in Populus

© 2023 The Authors. New Phytologist © 2023 New Phytologist Foundation.

Bibliographische Detailangaben
Veröffentlicht in:The New phytologist. - 1979. - 240(2023), 5 vom: 10. Dez., Seite 1848-1867
1. Verfasser: Kong, Lingfei (VerfasserIn)
Weitere Verfasser: Song, Qin, Wei, Hongbin, Wang, Yanhong, Lin, Minghui, Sun, Kuan, Zhang, Yuqian, Yang, Jiarui, Li, Chaofeng, Luo, Keming
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2023
Zugriff auf das übergeordnete Werk:The New phytologist
Schlagworte:Journal Article Populus PtoERF15 drought jasmonic acid vessel Plant Proteins Water 059QF0KO0R
Beschreibung
Zusammenfassung:© 2023 The Authors. New Phytologist © 2023 New Phytologist Foundation.
Drought stress is one of the major limiting factors for the growth and development of perennial trees. Xylem vessels act as the center of water conduction in woody species, but the underlying mechanism of its development and morphogenesis under water-deficient conditions remains elucidation. Here, we identified and characterized an osmotic stress-induced ETHYLENE RESPONSE FACTOR 15 (PtoERF15) and its target, PtoMYC2b, which was involved in mediating vessel size, density, and cell wall thickness in response to drought in Populus tomentosa. PtoERF15 is preferentially expressed in differentiating xylem of poplar stems. Overexpression of PtoERF15 contributed to stem water potential maintaining, thus promoting drought tolerance. RNA-Seq and biochemical analysis further revealed that PtoERF15 directly regulated PtoMYC2b, encoding a switch of JA signaling pathway. Additionally, our findings verify that three sets of homologous genes from NAC (NAM, ATAF1/2, and CUC2) gene family: PtoSND1-A1/A2, PtoVND7-1/7-2, and PtoNAC118/120, as the targets of PtoMYC2b, are involved in the regulation of vessel morphology in poplar. Collectively, our study provides molecular evidence for the involvement of the PtoERF15-PtoMYC2b transcription cascade in maintaining stem water potential through the regulation of xylem vessel development, ultimately improving drought tolerance in poplar
Beschreibung:Date Completed 03.11.2023
Date Revised 03.11.2023
published: Print-Electronic
Citation Status MEDLINE
ISSN:1469-8137
DOI:10.1111/nph.19251