The effect of low ascorbic acid content on tomato fruit ripening
| Autor: | Pierre Baldet, Yoshihiro Okabe, Hiroshi Ezura, Gustavo Esteban Gergoff Grozeff, Cécile Bres, Daniel Just, Christophe Rothan, Charlotte Steelheart, Carlos Guillermo Bartoli, Inti Ganganelli, Matías Leonel Alegre |
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| Přispěvatelé: | Universidad Nacional de la Plata [Argentine] (UNLP), Biologie du fruit et pathologie (BFP), Université de Bordeaux (UB)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Université de Tsukuba = University of Tsukuba |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
0106 biological sciences
0301 basic medicine Antioxidant [SDV]Life Sciences [q-bio] medicine.medical_treatment Plante fruitière Ascorbic Acid Plant Science medicine.disease_cause Chloroplast 01 natural sciences Antioxidants 03 medical and health sciences tomate Solanum lycopersicum Fruit charnu Chromoplasts Chromoplast Genetics medicine [SDV.BV]Life Sciences [q-bio]/Vegetal Biology Ciencias Agrarias Food science ComputingMilieux_MISCELLANEOUS Plant Proteins NADPH oxidase biology Chemistry Wild type Genetic Variation food and beverages Ripening Metabolism Hydrogen peroxide Ascorbic acid biology.organism_classification [SDV.BV.AP]Life Sciences [q-bio]/Vegetal Biology/Plant breeding 030104 developmental biology Fruit Solanum Oxidative stress 010606 plant biology & botany |
| Zdroj: | Planta Planta, Springer Verlag, 2020, 252 (3), pp.36. ⟨10.1007/s00425-020-03440-z⟩ SEDICI (UNLP) Universidad Nacional de La Plata instacron:UNLP |
| ISSN: | 0032-0935 1432-2048 |
| Popis: | The oxidant/antioxidant balance affects the ripening time of tomato fruit. Ripening of tomato fruit is associated with several modifications such as loss of cell wall firmness and transformation of chloroplasts to chromoplasts. Besides a peak in H2O2, reactive oxygen species (ROS) are observed at the transition stage. However, the role of different components of oxidative stress metabolism in fruit ripening has been scarcely addressed. Two GDP-l-galactose phosphorylase (GGP) Solanum lycopersicum L. cv Micro-Tom mutants which have fruit with low ascorbic acid content (30% of wild type) were used in this work to unravel the participation of ascorbic acid and H2O2 in fruit maturation. Both GGP mutants show delayed fruit maturation with no peak of H2O2; treatment with ascorbic acid increases its own concentration and accelerates ripening only in mutants to become like wild type plants. Unexpectedly, the treatment with ascorbic acid increases H2O2 synthesis in both mutants resembling what is observed in wild type fruit. Exogenous supplementation with H2O2 decreases its own synthesis delaying fruit maturation in plants with low ascorbic acid content. The site of ROS production is localized in the chloroplasts of fruit of all genotypes as determined by confocal microscopy analysis. The results presented here demonstrate that both ascorbic acid and H2O2 actively participate in tomato fruit ripening. Instituto de Fisiología Vegetal |
| Databáze: | OpenAIRE |
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