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title Water stress and recovery in the performance of two Eucalyptus globulus clones: physiological and biochemical profiles
authors Correia, B.; Pinto-Marijuan, M.; Neves, L.; Brossa, R.; Dias, M.C.; Costa, A.; Castro, B.B.; Araujo, C.; Santos, C.; Chaves, M.M.; Pinto, G.
author full name Correia, Barbara; Pinto-Marijuan, Marta; Neves, Lucinda; Brossa, Ricard; Dias, Maria Celeste; Costa, Armando; Castro, Bruno B.; Araujo, Clara; Santos, Conceicao; Chaves, Maria Manuela; Pinto, Gloria
title Water stress and recovery in the performance of two Eucalyptus globulus clones: physiological and biochemical profiles
nationality internacional
source Physiologia Plantarum
language English
document type Article
keywords plus DROUGHT STRESS; PHOTOSYNTHETIC PERFORMANCE; PLANT-RESPONSES; WHOLE-PLANT; GROWTH; POPULATIONS; DEFICIT; ACID; DISCRIMINATION; MICROTHECA
abstract Eucalyptus plantations are among the most productive forest stands in Portugal and Spain, being mostly used for pulp production and, more recently, as an energy crop. However, the region's Mediterranean climate, with characteristic severe summer drought, negatively affects eucalypt growth and increases mortality. Although the physiological response to water shortage is well characterized for this species, evidence about the plants' recovery ability remains scarce. In order to assess the physiological and biochemical response of Eucalyptus globulus during the recovery phase, two genotypes (AL-18 and AL-10) were submitted to a 3-week water stress period at two different intensities (18 and 25% of field capacity), followed by 1 week of rewatering. Recovery was assessed 1 day and 1 week after rehydration. Drought reduced height, biomass, water potential, NPQ and gas exchange in both genotypes. Contrarily, the levels of pigments, chlorophyll fluorescence parameters (F-v/F-m and phi(PSII)), MDA and ABA increased. During recovery, the physiological and biochemical profile of stressed plants showed a similar trend: they experienced reversion of altered traits (MDA, ABA, E, g(s), pigments), while other parameters did not recover (phi(PSII), NPQ). Furthermore, an overcompensation of CO2 assimilation was achieved 1 week after rehydration, which was accompanied by greater growth and re-establishment of oxidative balance. Both genotypes were tolerant to the tested conditions, although clonal differences were found. AL-10 was more productive and showed a more rapid and dynamic response to rehydration (namely in carotenoid content, phi(PSII) and NPQ) compared to clone AL-18.
author address [Correia, Barbara; Dias, Maria Celeste; Costa, Armando; Castro, Bruno B.; Santos, Conceicao; Pinto, Gloria] Univ Aveiro, Dept Biol, P-3810193 Aveiro, Portugal; [Correia, Barbara; Dias, Maria Celeste; Costa, Armando; Castro, Bruno B.; Santos, Conceicao; Pinto, Gloria] Univ Aveiro, CESAM Ctr Environm & Marine Studies, P-3810193 Aveiro, Portugal; [Pinto-Marijuan, Marta; Chaves, Maria Manuela] Inst Tecnol Quim & Biol, Mol Ecophysiol Lab, P-2780901 Oeiras, Portugal; [Pinto-Marijuan, Marta; Brossa, Ricard] Univ Barcelona, Fac Biol, Dept Biol Vegetal, E-08028 Barcelona, Spain; [Neves, Lucinda] Inst Expt & Technol Biol IBET, P-2781901 Oeiras, Portugal; [Neves, Lucinda; Araujo, Clara] Quinta Furadouro, Altri Florestal SA, P-2510582 Olho Marinho, Portugal
reprint address Pinto, G (reprint author), Univ Aveiro, Dept Biol, P-3810193 Aveiro, Portugal.
e-mail address gpinto@ua.pt
funding agency and grant number EDER through COMPETE (Programa Operacional Fatores de Competitividade); FCT project [PTDC/AGR-CFL/112996/2009]; program Ciencia (FCT, Portugal); Human Potential Operational Programme (National Strategic Reference Framework); FCT [SFRH/BD/86448/2012, SFRH/BPD/41700/2007]; Generalitat de Catalunya [BP-A 00261]; program 'Sistema de Incentivos a Investigacao e Desenvolvimento Tecnologico - I&DT Empresas', an incentive measure from COMPETE [2010/12690]; European Regional Development Fund; European Social Fund (EU)
funding text This work was supported by FEDER through COMPETE (Programa Operacional Fatores de Competitividade) and by the FCT project PTDC/AGR-CFL/112996/2009. G Pinto and Bruno B Castro are hired under the program Ciencia 2008 (FCT, Portugal), co-funded by the Human Potential Operational Programme (National Strategic Reference Framework 2007-2013) and European Social Fund (EU). FCT supported the fellowships of B.C. (SFRH/BD/86448/2012) and M.C.D. (SFRH/BPD/41700/2007) and Generalitat de Catalunya supported the fellowship of M.P.-M. (BP-A 00261). The work developed by Altri Florestal was supported by program 'Sistema de Incentivos a Investigacao e Desenvolvimento Tecnologico - I&DT Empresas', an incentive measure from COMPETE (project reference n. 2010/12690), financed by national funds and European Regional Development Fund.
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publisher WILEY-BLACKWELL
publisher city HOBOKEN
publisher address 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
issn 0031-9317
isbn 1399-3054
iso source abbreviation PHYSIOL PLANTARUM
publication date Physiol. Plant.
year published 2014
volume 150
issue 4
beginning page 580
ending page 592
digital object identifier (doi) 10.1111/ppl.12110
web of science category 13
subject category Plant Sciences
document delivery number Plant Sciences
unique article identifier AC5IE
link http://dx.doi.org/10.1111/ppl.12110