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title Kaolin particle film application lowers oxidative damage and DNA methylation on grapevine (Vitis vinifera L.)
authors Bernardo, S; Dinis, LT; Luzio, A; Pinto, G; Meijon, M; Valledor, L; Conde, A; Geros, H; Correia, CM; Moutinho-Pereira, J
author full name Bernardo, S.; Dinis, L. -T.; Luzio, A.; Pinto, Gloria; Meijon, Monica; Valledor, Luis; Conde, A.; Geros, H.; Correia, C. M.; Moutinho-Pereira, J.
title Kaolin particle film application lowers oxidative damage and DNA methylation on grapevine (Vitis vinifera L.)
nationality internacional
source ENVIRONMENTAL AND EXPERIMENTAL BOTANY
language English
document type Article
author keywords Antioxidative enzymes; Hydrogen peroxide; Lipid peroxidation; Epigenetic marks
keywords plus STRESS TOLERANCE; ABIOTIC STRESS; ANTIOXIDANT MACHINERY; GLUTATHIONE-REDUCTASE; ASCORBATE PEROXIDASE; SUPEROXIDE-DISMUTASE; DEFICIT IRRIGATION; WATER RELATIONS; HEAT-STRESS; LEAVES
abstract The exogenous kaolin application in grapevine has shown a great potential as summer stress mitigation strategy because it positively impacts fruit quality as a result of many molecular and biochemical changes. In the present study we wanted to address the hypothesis that the observed improved antioxidant capacity could also result from a more efficient enzymatic antioxidant system response. For that purpose, the enzymatic activity of superoxide dismutase (SOD), catalase (CAT), ascorbate peroxidase (APx), glutathione reductase (GR) and glutathione peroxidase (GPx) were measured in kaolin treated plants, and correlated to some biomarkers of oxidative status, including hydrogen peroxide (H2O2), total thiobarbituric acid reactive substances (TBARS) and proline. Also, to assess if kaolin particle film could mediate epigenetic modifications, the levels of DNA methylation (5-methylcytosine) were assessed in leaf tissues through a stereological analysis. Results showed that the activity of the ascorbate-glutathione cycle key enzymes was boosted in kaolin treated plants, which translated into a less oxidative damage in leaf and berry tissues (lower H2O2 levels and lipid peroxidation). Results also showed that the methylation of DNA, which seems to be stimulated by the harsh environmental conditions, was decreased in leaves from kaolin treated plants.
author address [Bernardo, S.; Dinis, L. -T.; Luzio, A.; Conde, A.; Geros, H.; Correia, C. M.; Moutinho-Pereira, J.] Univ Tras Os Montes & Alto Douro, CITAB, Ctr Res & Technol Agroenvironm & Biol Sci, Apt 1013, P-5000801 Vila Real, Portugal; [Pinto, Gloria] Univ Aveiro, Dept Biol, Campus Univ Santiago, P-3810193 Aveiro, Portugal; [Pinto, Gloria] Univ Aveiro, Ctr Environm & Marine Studies, CESAM, Campus Univ Santiago, P-3810193 Aveiro, Portugal; [Meijon, Monica; Valledor, Luis] Univ Oviedo, Fac Biol, Dept BOS, Plant Physiol, E-33006 Oviedo, Asturias, Spain; [Geros, H.] Univ Minho, Dept Biol, Grp Invest Biol Vegetal Aplicada & Inovacao Agroa, P-4710057 Braga, Portugal; [Geros, H.] Univ Minho, CBMA, Ctr Mol & Environm Biol, Dept Biol, Braga, Portugal; [Geros, H.] Univ Minho, Ctr Biol Engn CEB, Dept Biol Engn, Braga, Portugal
reprint address Dinis, LT (reprint author), Univ Tras Os Montes & Alto Douro, CITAB, Ctr Res & Technol Agroenvironm & Biol Sci, Apt 1013, P-5000801 Vila Real, Portugal.
e-mail address liatdinis@utad.pt
funding agency and grant number postdoctoral fellowships [SFRH/BPD/84676/2012, BPD/INTERACT/VITALITYWINE/184/2016, SFRH/BPD/101669/2014, CESAM (UID/AMB/50017 - POCI-01-0145-FEDER-007638)]
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cited reference count 66
publisher PERGAMON-ELSEVIER SCIENCE LTD
publisher city OXFORD
publisher address THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
issn 0098-8472
29-character source abbreviation ENVIRON EXP BOT
iso source abbreviation Environ. Exp. Bot.
publication date JUL
year published 2017
volume 139
beginning page 39
ending page 47
digital object identifier (doi) 10.1016/j.envexpbot.2017.04.002
page count 9
web of science category Plant Sciences; Environmental Sciences
subject category Plant Sciences; Environmental Sciences & Ecology
document delivery number EY1PA
unique article identifier WOS:000403736600005
CESAM authors