Fluctuations in sugar content are not determinant in explaining variations in vitamin C in tomato fruit |
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| Authors: | Capucine Massot Michel Génard Rebecca Stevens Hélène Gautier |
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| Institution: | 1. INRA UR 1115 Plantes et Systèmes de Culture Horticoles, Domaine St Paul, Site Agroparc, F-84914 Avignon, France;2. INRA UR 1052 Génétique et Amélioration des Fruits et Légumes, Domaine St Maurice, F-84143 Montfavet, France;1. Departamento de Riego, Centro de Edafología y Biología Aplicada del Segura, CSIC, P.O. Box 164, 30100, Espinardo, Murcia, Spain;2. Estación de Viticultura e Enoloxía de Galicia (EVEGA), Ponte San Clodio s/n 32427, Leiro, Ourense, Spain;1. Laboratoire de Biologie des Ligneux et des Grandes Cultures (LBLGC), UPRES EA 1207, Antenne Scientifique Universitaire de Chartres (ASUC), Université d''Orléans, 21 rue de Loigny la Bataille, F28000 Chartres, France;2. Ecole SITI, Département CASER, Conservatoire National des Arts et Métiers, 292 rue Saint Martin, F75141 Paris Cedex 03, France;3. Laboratoire des Biomolécules et Biotechnologies végétales, UPRES EA2106, Université François-Rabelais de Tours, UFR Sciences et Techniques, Parc de Grandmont, F37200 Tours, France;4. INRA, USC1328 Arbres et Réponses aux Contraintes Hydriques et Environnementales (ARCHE), rue de Chartres, F-45067 Orléans, France;1. Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (Northeast Region), Ministry of Agriculture and Rural Affairs/Northeast Agricultural University, Harbin, 150030, China;2. College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin, 150030, China;3. Vegetable Research Institute, Guangdong Academy of Agricultural Sciences, Guangzhou, 510640, China;1. State Key Laboratory of Crop Stress Biology for Arid Areas, College of Horticulture, Northwest A&F University, Yangling, Shaanxi 712100, China;2. College of Life Sciences, Inner Mongolia University, Hohhot 010021, China;3. Rural Science and Technology Development Center of Shaanxi Province, Xi’an, Shaanxi 710054, China;1. Center for Agricultural Water Research in China, China Agricultural University, Beijing 100083, China;2. State Key Laboratory of Agrobiotechnology Shenzhen Base, Shenzhen Research Institute, The Chinese University of Hong Kong, Shenzhen 518057, China;3. School of Life Sciences and State Key Laboratory of Agrobiotechnology, The Chinese University of Hong Kong, Hong Kong, China |
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| Abstract: | The present study aimed to clarify the relationship between sugars and vitamin C in fruit. The objective was to determine whether vitamin C content was regulated by sugar content due to the role of sugar as a precursor for vitamin C. During summer, maximal content in sugar and vitamin C were found in both genotypes tested Solanum lycopersicon ‘Cervil’ and ‘Levovil’. During autumn, fruit pruning increased fruit size and hexose content but fruit vitamin C content did not increase. Therefore sugar substrate was not limiting for vitamin C synthesis during autumn. We demonstrated for two cultivars, ‘Cervil’ and ‘Levovil’, with different sugar accumulation profiles during ripening, that sugar content was not determinant in the regulation of vitamin C content. The strong correlation observed between sugars and vitamin C in ‘Cervil’ was due to their concomitant increase during fruit ripening. |
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