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title Kaolin-based, foliar reflective film protects photosystem II structure and function in grapevine leaves exposed to heat and high solar radiation
authors Dinis, LT; Ferreira, H; Pinto, G; Bernardo, S; Correia, CM; Moutinho-Pereira, J
author full name Dinis, L-T.; Ferreira, H.; Pinto, G.; Bernardo, S.; Correia, C. M.; Moutinho-Pereira, J.
title Kaolin-based, foliar reflective film protects photosystem II structure and function in grapevine leaves exposed to heat and high solar radiation
nationality internacional
language English
document type Article
author keywords chlorophyll a fluorescence transient; energy flux; Vitis vinifera
abstract Extreme conditions, such as drought, high temperature, and solar irradiance intensity, are major factors limiting growth and productivity of grapevines. In a field experiment, kaolin particle film application on grapevine leaves was examined during two different summer conditions (in 2012 and 2013) with the aim to evaluate benefits of this practice against stressful conditions hindering photochemical processes. We used chlorophyll a fluorescence to investigate attached leaves. Two months after the application, during the hottest midday, the kaolin-treated plants showed by the JIP test significantly higher quantum yield of PSII photochemistry, flux ratios, maximum trapped excitation flux of PSI, absorption flux, electron transport flux, maximum trapped energy flux per cross section, and performance index than plants under control conditions in the warmer year. On the contrary, the treated plants showed a lower initial slope of relative variable fluorescence and a decrease in the absorption and electron transport per cross section. The JIP test showed higher efficiency of PSII in the plants treated with kaolin mainly in 2013 (higher temperature and drought). Our results supported the hypothesis that the accumulation of active PSII reaction centres was associated with decreased susceptibility to photoinhibition in the kaolin-treated plants and with more efficient photochemical quenching. Grapevines in the Douro Region seems to profit from the kaolin application.
author address [Dinis, L-T.; Ferreira, H.; Correia, C. M.; Moutinho-Pereira, J.] Univ Tras Os Montes & Alto Douro, Ctr Res & Technol Agroenvironm & Biol Sci CITAB, Apt 1013, P-5001801 Vila Real, Portugal; [Pinto, G.] Univ Aveiro, Dept Biol, Campus Univ Santiago, P-3810193 Aveiro, Portugal; [Pinto, G.] Univ Aveiro, CESAM Ctr Environm & Marine Studies, Campus Univ Santiago, P-3810193 Aveiro, Portugal; [Bernardo, S.] Univ Tras Os Montes & Alto Douro, Sch Agr & Vet Sci ECAV, Apt 1013, P-5001801 Vila Real, Portugal
reprint address Moutinho-Pereira, J (reprint author), Univ Tras Os Montes & Alto Douro, Ctr Res & Technol Agroenvironm & Biol Sci CITAB, Apt 1013, P-5001801 Vila Real, Portugal.
e-mail address moutinho@utad.pt
researcherid number Moutinho-Pereira, Jose/J-6950-2013
orcid number Moutinho-Pereira, Jose/0000-0001-5825-559X
funding agency and grant number European Union Funds - 'Fundacao para a Ciencia e a Tecnologia' (FCT, Portugal) [Enoexcel - Norte - 07-0124-FEDER-000032]; Human Potential Operational Programme; European Social Fund (EU); [PTDC/AGR-ALI/110877/2009]; [SFRH/BPD/84676/2012]
funding text The study was undertaken under the PTDC/AGR-ALI/110877/2009 and European Union Funds (Enoexcel - Norte - 07-0124-FEDER-000032) financed by 'Fundacao para a Ciencia e a Tecnologia' (FCT, Portugal). The postdoctoral fellowship (SFRH/BPD/84676/2012) awarded to the first author is appreciated. We would also like to thank
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cited reference count 34
publisher SPRINGER
publisher city DORDRECHT
issn 0300-3604
29-character source abbreviation PHOTOSYNTHETICA
iso source abbreviation Photosynthetica
publication date MAR
year published 2016
volume 54
issue 1
beginning page 47
ending page 55
digital object identifier (doi) 10.1007/s11099-015-0156-8
page count 9
web of science category Plant Sciences
subject category Plant Sciences
document delivery number DB7XU
unique article identifier WOS:000368731500007
CESAM authors