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Article

Response of Mycorrhizal ’Touriga Nacional‘ Variety Grapevines to High Temperatures Measured by Calorespirometry and Near-Infrared Spectroscopy

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LEAF—Linking Landscape, Environment, Agriculture and Food. Instituto Superior de Agronomia, Universidade de Lisboa, Tapada da Ajuda, 1349-017 Lisboa, Portugal
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Departamento de Fitotecnia, MED-Instituto Mediterrâneo para a Agricultura, Ambiente e Desenvolvimento, Escola de Ciências e Tecnologia, Universidade de Évora, Pólo da Mitra, Ap. 94, 7006-554 Évora, Portugal
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Food Colour and Quality Laboratory, Department of Nutrition and Food Science, Facultad de Farmacia, Universidad de Sevilla, 41012 Sevilla, Spain
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Department of Chemistry and Biochemistry, Brigham Young University, Provo, UT 84602, USA
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MED-Instituto Mediterrâneo para a Agricultura, Ambiente e Desenvolvimento, Instituto de Investigação e Formação Avançada, Universidade de Évora, Pólo da Mitra, Ap. 94, 7006-554 Évora, Portugal
*
Author to whom correspondence should be addressed.
Current affiliation: Department of Animal Production, University of Cordoba, Campus of Rabanales, 14071 Córdoba, Spain.
Plants 2020, 9(11), 1499; https://doi.org/10.3390/plants9111499
Received: 7 October 2020 / Revised: 29 October 2020 / Accepted: 3 November 2020 / Published: 5 November 2020
(This article belongs to the Special Issue Grapevine–Cooperation and Struggle with Microbial Residents)
Heat stress negatively affects several physiological and biochemical processes in grapevine plants. In this work, two new methods, calorespirometry, which has been used to determine temperature adaptation in plants, and near-infrared (NIR) spectroscopy, which has been used to determine several grapevine-related traits and to discriminate among varieties, were tested to evaluate grapevine response to high temperatures. ‘Touriga Nacional’ variety grapevines, inoculated or not with Rhizoglomus irregulare or Funneliformis mosseae, were used in this study. Calorespirometric parameters and NIR spectra, as well as other parameters commonly used to assess heat injury in plants, were measured before and after high temperature exposure. Growth rate and substrate carbon conversion efficiency, calculated from calorespirometric measurements, and stomatal conductance, were the most sensitive parameters for discriminating among high temperature responses of control and inoculated grapevines. The results revealed that, although this vine variety can adapt its physiology to temperatures up to 40 °C, inoculation with R. irregulare could additionally help to sustain its growth, especially after heat shocks. Therefore, the combination of calorespirometry together with gas exchange measurements is a promising strategy for screening grapevine heat tolerance under controlled conditions and has high potential to be implemented in initial phases of plant breeding programs. View Full-Text
Keywords: Vitis vinifera L.; stress tolerance; arbuscular mycorrhizal fungi; chlorophyll fluorescence; membrane permeability; relative chlorophyll content; stomatal conductance Vitis vinifera L.; stress tolerance; arbuscular mycorrhizal fungi; chlorophyll fluorescence; membrane permeability; relative chlorophyll content; stomatal conductance
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MDPI and ACS Style

Nogales, A.; Ribeiro, H.; Nogales-Bueno, J.; Hansen, L.D.; Gonçalves, E.F.; Coito, J.L.; Rato, A.E.; Peixe, A.; Viegas, W.; Cardoso, H. Response of Mycorrhizal ’Touriga Nacional‘ Variety Grapevines to High Temperatures Measured by Calorespirometry and Near-Infrared Spectroscopy. Plants 2020, 9, 1499. https://doi.org/10.3390/plants9111499

AMA Style

Nogales A, Ribeiro H, Nogales-Bueno J, Hansen LD, Gonçalves EF, Coito JL, Rato AE, Peixe A, Viegas W, Cardoso H. Response of Mycorrhizal ’Touriga Nacional‘ Variety Grapevines to High Temperatures Measured by Calorespirometry and Near-Infrared Spectroscopy. Plants. 2020; 9(11):1499. https://doi.org/10.3390/plants9111499

Chicago/Turabian Style

Nogales, Amaia, Hugo Ribeiro, Julio Nogales-Bueno, Lee D. Hansen, Elsa F. Gonçalves, João L. Coito, Ana E. Rato, Augusto Peixe, Wanda Viegas, and Hélia Cardoso. 2020. "Response of Mycorrhizal ’Touriga Nacional‘ Variety Grapevines to High Temperatures Measured by Calorespirometry and Near-Infrared Spectroscopy" Plants 9, no. 11: 1499. https://doi.org/10.3390/plants9111499

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