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Metabolites
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Metabolic Changes during Pre- and Post-harvest Fruit and Vegetable Decay,...
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Metabolic Changes during Pre- and Post-harvest Fruit and Vegetable Decay, Ripening and Senescence

A special issue of Metabolites (ISSN 2218-1989). This special issue belongs to the section "Plant Metabolism".

Deadline for manuscript submissions: 30 September 2024 | Viewed by 2022

Special Issue Editors

Dr. Analía Concellón

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Guest Editor
Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Facultad de Ciencias Exactas, Universidad Nacional de La Plata (UNLP), Centro de Investigación y Desarrollo en Criotecnología de Alimentos (CIDCA), Calles 47 y 116, La Plata CP 1900, Buenos Aires, Argentina
Interests: traditional and emerging post-harvest technology; post-harvest physiology of fruit and vegetables; chilling injury (eggplant, pepper, tomato); bioactive compounds; food chemistry
Dr. María José Zaro

E-Mail Website
Guest Editor
Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Facultad de Ciencias Exactas, Universidad Nacional de La Plata (UNLP), Centro de Investigación y Desarrollo en Criotecnología de Alimentos (CIDCA), Calles 47 y 116, La Plata CP 1900, Buenos Aires, Argentina
Interests: post-harvest physiology of fruit and vegetables; post-harvest technology; shelf-life; antioxidant compounds; bio-stimulants; functional and nutritional quality; essential oils

Special Issue Information

Dear Colleagues,

Fruits and vegetables represent a significant portion of the world's food waste. The overall quality of fruit and vegetable products results from various biochemical processes that occur beforehand. Therefore, it is essential for scientists to study them. Understanding the profile, roles, biochemistry and/or regulation of metabolites is crucial in modulating, improving and extending their post-harvest shelf-life while also increasing knowledge about specific physiological and biochemical metabolism.

Thus, the purpose of this Special Issue is to collect research and review articles focused on recent advancements in the main metabolic changes that occur during both the pre- and post-harvest stages of fruit and vegetables. The inclusion of applications involving pre- or post-harvest strategies, such us bio-stimulants or abiotic stresses (not exclusively), with the ultimate aim of prolonging postharvest life, reducing the incidence of pathogens or deterioration reactions, and enhancing or preserving valuable metabolites contributing to nutritional and sensorial quality is encouraged. This Special Issue will also cover advances in understanding the mechanisms of chilling injury and technologies to mitigate or delay its occurrence. Contributions related to recent biochemical aspects, changes and/or the regulation of metabolites and enzymes associated with microorganism incidence and product ripening/senescence are welcome. Finally, methodology development for detecting metabolites or changes in metabolic pathways are also welcome.

Dr. Analía Concellón
Dr. María José Zaro
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Metabolites is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2700 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • pre- and post-harvest technology
  • bio-stimulants and abiotic stress
  • nutritional quality
  • metabolic pathway
  • bioactive compounds
  • chilling injury

Published Papers (2 papers)

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Research

15 pages, 2778 KiB  
Article
Melatonin Combined with Wax Treatment Enhances Tolerance to Chilling Injury in Red Bell Pepper
by Magalí Darré, María José Zaro, Michelle Guijarro-Fuertes, Ludmila Careri and Analia Concellón
Metabolites 2024, 14(6), 330; https://doi.org/10.3390/metabo14060330 - 13 Jun 2024
Viewed by 583
Abstract
Bell peppers (Capsicum annuum L.) are prone to chilling injury (CI) when stored at temperatures below 7 °C. Melatonin, a natural plant regulator, plays a critical role in defending against different pre- and post-harvest abiotic stresses, including those associated with cold storage. [...] Read more.
Bell peppers (Capsicum annuum L.) are prone to chilling injury (CI) when stored at temperatures below 7 °C. Melatonin, a natural plant regulator, plays a critical role in defending against different pre- and post-harvest abiotic stresses, including those associated with cold storage. This study aimed to assess the effects of applying exogenous melatonin alone and in combination with a commercial wax on the CI tolerance, postharvest life, and potential biomarker search of red bell peppers. In the initial experiment, the effective melatonin concentration to reduce CI effects was determined. Peppers were sprayed with either distilled water (control) or a melatonin aqueous solution (M100 = 100 μM or M500 = 500 μM) and then stored for 33 d at 4 °C, followed by 2 d at 20 °C. The M500 treatment proved to be more effective in reducing fruit CI incidence (superficial scalds) and metabolic rate, while weight loss, softening, and color were comparable to the control. A second experiment assessed the potential synergistic effects of a combined melatonin and commercial wax treatment on pepper CI and quality. Fruits were sprayed with distilled water (control), melatonin (M500), commercial wax (Wax), or the combined treatment (Wax + M500) and stored for 28 d at 4 °C, followed by 2 d at 20 °C. The Wax + M500 was the most effective in significantly reducing the incidence of fruit CI symptoms and calyx fungal infection. Furthermore, this combined treatment enhanced fruit weight loss prevention compared with individual melatonin or wax treatment. Also, Wax + M500-treated peppers exhibited notable proline accumulation, indicative of a metabolic response counteracting the cold effects, resulting in better fruit stress acclimation. This treatment also preserved the peppers’ color and antioxidant capacity. In summary, these findings highlight the suitability of applying a combined Wax + M500 treatment as a highly effective strategy to enhance the CI tolerance of peppers and extend their postharvest life. Full article
(This article belongs to the Special Issue Metabolic Changes during Pre- and Post-harvest Fruit and Vegetable Decay, Ripening and Senescence)
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24 pages, 1834 KiB  
Article
Heat-Induced Cross-Tolerance to Salinity Due to Thermopriming in Tomatoes
by Tobias Körner, Ruven Gierholz, Jana Zinkernagel and Simone Röhlen-Schmittgen
Metabolites 2024, 14(4), 213; https://doi.org/10.3390/metabo14040213 - 10 Apr 2024
Viewed by 1016
Abstract
Global plant production is challenged by unpredictable (a)biotic stresses that occur individually, simultaneously or staggered. Due to an increasing demand for environmentally friendly plant production, new sustainable, universal, and preventive measures in crop protection are needed. We postulate thermopriming as a suitable procedure [...] Read more.
Global plant production is challenged by unpredictable (a)biotic stresses that occur individually, simultaneously or staggered. Due to an increasing demand for environmentally friendly plant production, new sustainable, universal, and preventive measures in crop protection are needed. We postulate thermopriming as a suitable procedure that fulfills these requirements. Therefore, we performed thermopriming as a pre-conditioning on tomato transplants in combination with two subsequent salt stress treatments to evaluate their single and combined physiological effects on leaves and fruits with regard to plant performance, fruit yield and quality. We identified a cross-tolerance to salinity that was triggered by the preceding thermopriming treatment and resulted in an accumulation of phenols and flavonols in the leaves. Plant growth and fruit yield were initially delayed after the stress treatments but recovered later. In regard to fruit quality, we found an increase in carotenoid and starch contents in fruits due to thermopriming, while sugars and titratable acidity were not affected. Our results indicate that thermopriming can mitigate the impact of subsequent and recurrent stress events on plant performance and yield under production-like conditions. Full article
(This article belongs to the Special Issue Metabolic Changes during Pre- and Post-harvest Fruit and Vegetable Decay, Ripening and Senescence)
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