Volatile organic compounds characterized from grapevine (Vitis vinifera L. cv. Malbec) berries increase at pre-harvest and in response to UV-B radiation |
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| Affiliation: | 1. Laboratorio de Bioquímica Vegetal, Instituto de Biología Agrícola de Mendoza, Consejo Nacional de Investigaciones Científicas y Tecnológicas-Universidad Nacional de Cuyo, Almirante Brown 500, M5528AHB Chacras de Coria, Argentina;2. Estación Experimental Agropecuaria La Consulta-Instituto Nacional de Tecnología Agropecuaria, CC8, 5567 La Consulta, Argentina;1. Saint-Jean-sur-Richelieu Research and Development Centre, Agriculture and Agri-Food Canada, Saint-Jean-sur-Richelieu, QC J3B 3E6, Canada;2. Zhejiang University, College of Biosystems Engineering and Food Science, Zhejiang Key Laboratory for Agri-Food Processing, Hangzhou 310058, People''s Republic of China;1. Universidad de La Rioja, Facultad de Ciencia y Tecnología, Madre de Dios 53, 26006 Logroño (La Rioja), Spain;2. Instituto de Ciencias de la Vid y del Vino (ICVV) (Universidad de La Rioja, CSIC, Gobierno de La Rioja), Finca La Grajera, Ctra. Burgos km 6, 26007, Logroño (La Rioja), Spain;1. Beijing Key Laboratory of Grape Science and Enology, and CAS Key Laboratory of Plant Resources, Institute of Botany, The Chinese Academy of Sciences, Beijing 100093, PR China;2. University of Chinese Academy of Sciences, Beijing 100049, PR China;3. Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture, Wuhan Botanical Garden, The Chinese Academy of Sciences, Wuhan 430074, PR China;1. College of Forestry, Northwest A&F University, Yangling, Shaanxi 712100, China;2. Horticulture Research and Development Centre, Agriculture and Agri-Food Canada, Saint-Jean-sur-Richelieu, 430 Boulevard Gouin, QC J3B 3E6, Canada;3. Eastern Cereal and Oilseed Research Centre, Agriculture and Agri-Food Canada, Ottawa, 960 Carling Avenue, ON K1A 0C6, Canada;4. College of Biology & Agro-forestry Engineering, Tongren University, Tongren, Guizhou 554300, China;1. Instituto de Biología Agrícola de Mendoza (IBAM), Facultad de Ciencias Agrarias, CONICET, UNCuyo, Almirante Brown 500, Chacras de Coria M5528AHB, Argentina;2. Research Centre for Plant Growth and Development, School of Life Sciences, University of KwaZulu-Natal, Pietermaritzburg Campus, P/Bag X01, Scottsville 3209, South Africa;1. Consiglio per la ricerca in agricoltura e l’analisi dell’economia agraria (Italy) – Centro di ricerca Viticoltura ed Enologia – CREA – VE, via P. Micca 35, Asti, Italy;2. Dipartimento di Scienze Agrarie, Forestali e Alimentari – Università di Torino, Largo Braccini 2, 10095 Grugliasco (TO), Italy |
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| Abstract: | Ultraviolet-B solar radiation (UV-B) is an environmental signal with biological effects in plant tissues. Recent investigations have assigned a protective role of volatile organic compounds (VOCs) in plant tissues submitted to biotic and abiotic stresses. This study investigated VOCs in berries at three developmental stages (veraison, pre-harvest and harvest) of Vitis vinifera L. cv. Malbec exposed (or not) to UV-B both, in in vitro and field experiments. By Head Space-Solid Phase Micro Extraction–Gas Chromatography–Electron Impact Mass Spectrometry (HS-SPME–GC–EIMS) analysis, 10 VOCs were identified at all developmental stages: four monoterpenes, three aldehydes, two alcohols and one ketone. Monoterpenes increased at pre-harvest and in response to UV-B in both, in vitro and field conditions. UV-B also augmented levels of some aldehydes, alcohols and ketones. These results along with others from the literature suggest that UV-B induce grape berries to produce VOCs (mainly monoterpenes) that protect the tissues from UV-B itself and other abiotic and biotic stresses, and could affect the wine flavor. Higher emission of monoterpenes was observed in the field experiments as compared in vitro, suggesting the UV-B/PAR ratio is not a signal in itself. |
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| Keywords: | Grapevine Berries Vitaceae UV-B radiation Volatiles Terpenes |
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