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title Hormonal dynamics during recovery from drought in two Eucalyptus globulus genotypes: From root to leaf
authors Correia, B; Pinto-Marijuan, M; Castro, BB; Brossa, R; Lopez-Carbonell, M; Pinto, G
author full name Correia, Barbara; Pinto-Marijuan, Marta; Castro, Bruno B.; Brossa, Ricard; Lopez-Carbonell, Marta; Pinto, Gloria
title Hormonal dynamics during recovery from drought in two Eucalyptus globulus genotypes: From root to leaf
nationality internacional
language English
document type Article
author keywords ABA; ABA-GE; JA; PCA; Rehydration; Water stress
abstract Drought is a limiting environmental stress that represents a growing constraint to the forestry sector. Eucalyptus globulus is a widely planted coppice species, which capacity to cope with water deficit has already been described. However, the capacity of this species to recover is still poorly understood. In this study, we aimed to investigate the changes in abscisic acid (ABA), ABA-glucose ester (ABA-GE) and jasmonic acid (JA) content in leaves, xylem sap and roots of two genotypes (AL-10 and AL-18) during rewatering (2 h, 4 h, 24 h, and 168 h), after a drought stress period (0 h). We wished to clarify the role of these hormones in the recovery from drought and to determine whether these hormonal relations were related to specific genotype metabolisms. Our results showed that drought caused an increased in ABA and ABA-GE levels in all analysed plant parts, while JA content decreased in leaves, increased in xylem sap and did not change in roots. Some of these responses were genotype specific. During rewatering, ABA and ABA-GE content decreased in both genotypes and all plant parts, but at different time scales, and JA levels did not greatly change. Again, the genotypes responded differently. Altogether, our results characterised the response pattern of clone AL-10 as more responsive and defended that leaf should be used in preliminary screening methods of stress tolerance. The hormonal dynamics were related to the previously documented responses of these genotypes and sustain further physiological and molecular studies of water stress in this and other tree species. (C) 2014 Elsevier Masson SAS. All rights reserved.
author address [Correia, Barbara; Castro, Bruno B.; Pinto, Gloria] Univ Aveiro, Dept Biol, P-3810193 Aveiro, Portugal; [Correia, Barbara; Castro, Bruno B.; Pinto, Gloria] Univ Aveiro, CESAM, Ctr Environm & Marine Studies, P-3810193 Aveiro, Portugal; [Pinto-Marijuan, Marta] Inst Tecnol Quim & Biol, Mol Ecophysiol Lab, P-2780901 Oeiras, Portugal; [Pinto-Marijuan, Marta; Brossa, Ricard; Lopez-Carbonell, Marta] Univ Barcelona, Fac Biol, Dept Biol Vegetal, E-08028 Barcelona, Spain
reprint address Pinto, G (reprint author), Univ Aveiro, Dept Biol, Campus Univ Santiago, P-3810193 Aveiro, Portugal.
e-mail address gpinto@ua.pt
funding agency and grant number European Funds through COMPETE; National Funds through the Portuguese Science Foundation (FCT) [PEst-C/MAR/LA0017/2013, PTDC/AGR-CFL/112996/2009]; Human Potential Operational Programme (National Strategic Reference Framework); European Social Fund (EU); FCT [SFRH/BD/86448/2012]; Generalitat de Catalunya [BP - A00261]; program
funding text This work was supported by European Funds through COMPETE and by National Funds through the Portuguese Science Foundation (FCT) within projects PEst-C/MAR/LA0017/2013 and PTDC/AGR-CFL/112996/2009. G. Pinto and B. B. Castro are hired under the programme Ciencia 2008 (FCT, Portugal), co-funded by the Human Potential Operational Programme (National Strategic Reference Framework 2007-2013) and European Social Fund (EU). The fellowships of B. Correia (SFRH/BD/86448/2012) and M. Pinto-Marijuan (BP - A00261) were supported by FCT and Generalitat de Catalunya, respectively. The work was developed in collaboration with Altri Florestal SA that was supported by the program
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cited reference count 46
publisher city PARIS
publisher address 23 RUE LINOIS, 75724 PARIS, FRANCE
issn 0981-9428
29-character source abbreviation PLANT PHYSIOL BIOCH
iso source abbreviation Plant Physiol. Biochem.
publication date SEP
year published 2014
volume 82
beginning page 151
ending page 160
digital object identifier (doi) 10.1016/j.plaphy.2014.05.016
page count 10
web of science category Plant Sciences
subject category Plant Sciences
document delivery number AN6IS
unique article identifier WOS:000340698800018
link http://dx.doi.org/10.1016/j.plaphy.2014.05.016