info:eu-repo/semantics/article
Chilling tolerance of Micro-Tom fruit involves changes in the primary metabolite levels and in the stress response
Fecha
2019-02Registro en:
Gonzalez, Carla; Zanor, María Inés; Re, Martin Damian; Otaiza González, Santiago Nicolás; Asis, Ramón; et al.; Chilling tolerance of Micro-Tom fruit involves changes in the primary metabolite levels and in the stress response; Elsevier Science; Postharvest Biology and Technology; 148; 2-2019; 58-67
0925-5214
CONICET Digital
CONICET
Autor
Gonzalez, Carla
Zanor, María Inés
Re, Martin Damian
Otaiza González, Santiago Nicolás
Asis, Ramón
Valle, Estela Marta
Boggio, Silvana Beatriz
Resumen
Prevention of post-harvest fruit losses is important to increase food availability. In the case of tomato, postharvest storage at low temperature and the subsequent handling and distribution of fruit is limited by chilling injury, a physiological disorder that causes failure to normally ripen and increased decay disease. Micro-Tom fruit, a dwarf tomato variety, is relatively tolerant to cold storage (4 °C for 4 weeks). To understand the tolerance mechanism of Micro-Tom fruit at the molecular level, its transcriptome and metabolome were evaluated before, after chilling storage, and shortly after transferring the fruit to ambient temperature to focus on the critical early events accounting chilling tolerance. Changes in gene expression and metabolic profiles indicate metabolic adaptation (fermentation, amino acid mobilization and photosynthesis recovery after cold storage) and induction of defense mechanisms (biotic and abiotic stress, and redox metabolism) that can be related with Micro-Tom tolerance to postharvest chilling injury. The current research extends the understanding of the mechanisms involved in chilling tolerance and provides tools for developing new technologies and varieties.