Identification and characterization of the phosphatidic acid binding A. thaliana phosphoprotein PLDrp1 which is regulated by PLDα1 in a stress dependent manner
Identifiers
Permanent link (URI): http://hdl.handle.net/10017/60016DOI: 10.1111/tpj.13651
ISSN: 0960-7412
Date
2017-07-29Affiliation
Universidad de Alcalá. Departamento de Ciencias de la Vida. Unidad Docente de Fisiología VegetalBibliographic citation
Plant Journal, 2017, v. 92, n. , p. 272-290
Keywords
Arabidopsis thaliana
At5g39570
Dehydration stress
Phosphatidic acid-binding
Phospholipase Da1
Phosphoprotein
Description / Notes
17 p.
Document type
info:eu-repo/semantics/article
Version
info:eu-repo/semantics/acceptedVersion
Rights
© 2017 The Authors
Access rights
info:eu-repo/semantics/openAccess
Abstract
Phospholipase D (PLD) and its cleavage product phosphatidic acid (PA) are crucial in plant stress-signalling. Although some targets of PLD and PA have been identified, the signalling pathway is still enigmatic. This study demonstrates that the phosphoprotein At5g39570, now called PLD-regulated protein1 (PLDrp1), from Arabidopsis thaliana is directly regulated by PLDa1. The protein PLDrp1 can be divided into two regions with distinct properties. The conserved N-terminal region specifically binds PA, while the repeat-rich C-terminal domain suggests interactions with RNAs. The expression of PLDrp1 depends on PLDa1 and the plant water status. Water stress triggers a plda1-like phenotype in PLDrp1 mutants and induces the expression of PLDrp1 in plda1 mutants. The regulation of PLDrp1 by PLDa1 and environmental stressors contributes to the understanding of the complex PLD regulatory network and presents a new member of the PA-signalling chain in plants.
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identification_ufer_TPJ_2017.pdf | 2.010Mb |
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