PYL8 ABA receptors of Phoenix dactylifera play a crucial role in response to abiotic stress and are stabilized by ABA
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Títol
PYL8 ABA receptors of Phoenix dactylifera play a crucial role in response to abiotic stress and are stabilized by ABAAutoria
Data de publicació
2020-10-16Editor
Oxford University Press; Society for Experimental BiologyISSN
0022-0957; 1460-2431Cita bibliogràfica
Irene Garcia-Maquilon, Alberto Coego, Jorge Lozano-Juste, Maxim Messerer, Carlos de Ollas, Jose Julian, Rafael Ruiz-Partida, Gaston Pizzio, Borja Belda-Palazón, Aurelio Gomez-Cadenas, Klaus F X Mayer, Dietmar Geiger, Saleh A Alquraishi, Abdulwahed F Alrefaei, Peter Ache, Rainer Hedrich, Pedro L Rodriguez, PYL8 ABA receptors of Phoenix dactylifera play a crucial role in response to abiotic stress and are stabilized by ABA, Journal of Experimental Botany, Volume 72, Issue 2, 2 February 2021, Pages 757–774, https://doi.org/10.1093/jxb/eraa476Tipus de document
info:eu-repo/semantics/articleVersió
info:eu-repo/semantics/publishedVersionParaules clau / Matèries
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Resum
The identification of those prevalent abscisic acid (ABA) receptors and molecular mechanisms that trigger drought adaptation in crops well adapted to harsh conditions such as date palm (Phoenix dactylifera, Pd) sheds ... [+]
The identification of those prevalent abscisic acid (ABA) receptors and molecular mechanisms that trigger drought adaptation in crops well adapted to harsh conditions such as date palm (Phoenix dactylifera, Pd) sheds light on plant–environment interactions. We reveal that PdPYL8-like receptors are predominantly expressed under abiotic stress, with Pd27 being the most expressed receptor in date palm. Therefore, subfamily I PdPYL8-like receptors have been selected for ABA signaling during abiotic stress response in this crop. Biochemical characterization of PdPYL8-like and PdPYL1-like receptors revealed receptor- and ABA-dependent inhibition of PP2Cs, which triggers activation of the pRD29B-LUC reporter in response to ABA. PdPYLs efficiently abolish PP2C-mediated repression of ABA signaling, but loss of the Trp lock in the seed-specific AHG1-like phosphatase PdPP2C79 markedly impairs its inhibition by ABA receptors. Characterization of Arabidopsis transgenic plants that express PdPYLs shows enhanced ABA signaling in seed, root, and guard cells. Specifically, Pd27-overexpressing plants showed lower ABA content and were more efficient than the wild type in lowering transpiration at negative soil water potential, leading to enhanced drought tolerance. Finally, PdPYL8-like receptors accumulate after ABA treatment, which suggests that ABA-induced stabilization of these receptors operates in date palm for efficient boosting of ABA signaling in response to abiotic stress. [-]
Publicat a
Journal of Experimental Botany, Volume 72, Issue 2, 2 February 2021, Pages 757–774, https://doi.org/10.1093/jxb/eraa476Dades relacionades
eraa476_suppl_Supplementary_Figures-S1-S3_and_Table_S1Entitat finançadora
Scientist Fellowship Research Program (DSFP) of King Saud University
Drets d'accés
© The Author(s) 2020. Published by Oxford University Press on behalf of the Society for Experimental Biology. All rights reserved. For permissions, please email: journals.permissions@oup.com
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info:eu-repo/semantics/openAccess
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info:eu-repo/semantics/openAccess
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