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title Physiological response to drought in seedlings of Pistacia lentiscus (mastic tree)
authors Vasques, AR; Pinto, G; Dias, MC; Correia, CM; Moutinho-Pereira, JM; Vallejo, VR; Santos, C; Keizer, JJ
author full name Vasques, A. R.; Pinto, G.; Dias, M. C.; Correia, C. M.; Moutinho-Pereira, J. M.; Vallejo, V. R.; Santos, C.; Keizer, J. J.
title Physiological response to drought in seedlings of Pistacia lentiscus (mastic tree)
nationality internacional
source NEW FORESTS
language English
document type Article
author keywords Osmotic stress; Polyethylene glycol; Ecological restoration; Resilience
keywords plus LEAF GAS-EXCHANGE; MEDITERRANEAN BASIN; SHRUB; STRATEGIES; PLANTS; ANACARDIACEAE; ESTABLISHMENT; FLUORESCENCE; GERMINATION; CULTIVARS
abstract Drought is often an important constraint on plant regeneration in the Mediterranean. Pistacia lentiscus is of particular interest in restoration actions in fire-prone areas. This study addressed the current knowledge gap on the physiological response of this species to drought during its initial development. We hypothesized that the seedlings would have a high resistance to drought. In addition, we expected that seedlings from two sources with contrasting climate conditions would perform distinctly under drought. Seeds were collected from two populations in north and south Portugal. Seedlings were subjected to a progressively lower osmotic potential during 25 days, through increasing PEG concentration in the hydroponic solution. The physiological response of the seedlings was assessed by measuring gas exchange and chlorophyll fluorescence after 15 and 25 days of drought exposure, when the osmotic potential was -2.47 and -5.17 MPa, respectively. Shoot growth, net CO2 assimilation rate, stomatal conductance and transpiration were significantly reduced under drought conditions, whilst intrinsic water-use efficiency (IWUE) remained unaffected. This response partially agreed with the known strategy of P. lentiscus to cope with drought, typically maintaining high IWUE, however the observed reduction in stomatal conductance was not as pronounced as expected. Drought induced a decrease in leaf pigments that could be linked to photo-protective mechanisms. Seed source did not have a significant effect on drought response. P. lentiscus showed a high resistance to drought, which clearly supported its use in restoration actions in the Mediterranean, but these findings require further testing under field conditions.
author address [Vasques, A. R.; Keizer, J. J.] Univ Aveiro, Dept Environm & Planning, Ctr Environm & Marine Studies CESAM, Campus Univ Santiago, P-3810193 Aveiro, Portugal; [Pinto, G.; Dias, M. C.; Santos, C.] Univ Aveiro, Dept Biol, Ctr Environm & Marine Studies CESAM, Campus Univ Santiago, P-3810193 Aveiro, Portugal; [Correia, C. M.; Moutinho-Pereira, J. M.] Univ Tras Os Montes & Alto Douro, Ctr Res & Technol Agroenvironm & Biol Sci CITAB, Apt 1013, P-5000801 Vila Real, Portugal; [Vallejo, V. R.] Univ Barcelona, Dept Plant Biol, Diagonal 643, E-08028 Barcelona, Spain; [Vallejo, V. R.] CEAM Fdn, Parque Tecnol,Ch Darwin 14, Paterna 46980, Spain
reprint address Vasques, AR (reprint author), Univ Aveiro, Dept Environm & Planning, Ctr Environm & Marine Studies CESAM, Campus Univ Santiago, P-3810193 Aveiro, Portugal.
e-mail address ana.vasques@ua.pt
researcherid number Moutinho-Pereira, Jose/J-6950-2013
orcid number Moutinho-Pereira, Jose/0000-0001-5825-559X
funding agency and grant number Portuguese Foundation for Science and Technology (FCT); QREN [SFRH/BD/47522/2008, SFRH/BPD/41700/2007]; Centro de Estudos do Ambiente e Mar-CESAM-INCENTIVO [BPD/UI88/2154/2014]; European Union [283068]
funding text The authors would like to thank Diana Vieira, Xufeng Shen, Carlota Vaz and Mariana Pedro for their kind help provided in seed harvesting and to Jingxian Tao, Armando Costa, Cristina Monteiro, Paula Maia and Nelson Abrantes for their laboratory support. We are also very grateful to Banc de Llavors Forestalls de Valencia (Spain) for the indications on the seed handling protocols and to the reviewers and editors for their valuable comments. This study was funded by the Portuguese Foundation for Science and Technology (FCT) and QREN through the PhD grant of the first author (SFRH/BD/47522/2008) and the post-doctoral fellowship of M.C. Dias (SFRH/BPD/41700/2007). The post-doctoral fellowship of G. Pinto (BPD/UI88/2154/2014) was funded by Centro de Estudos do Ambiente e Mar-CESAM-INCENTIVO. The review process of this manuscript received funding from the European Union Seventh Framework Programme (FP7/2007-2013) under Grant Agreement No. 283068 (CASCADE project).
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cited reference count 41
publisher SPRINGER
publisher city DORDRECHT
publisher address VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS
issn 0169-4286
29-character source abbreviation NEW FOREST
iso source abbreviation New For.
publication date JAN
year published 2016
volume 47
issue 1
beginning page 119
ending page 130
digital object identifier (doi) 10.1007/s11056-015-9497-1
page count 12
web of science category Forestry
subject category Forestry
document delivery number DC5IY
unique article identifier WOS:000369255900006
file vasquesetal2015_nefo_.pdf
link http://link.springer.com/article/10.1007/s11056-015-9497-1