Special Issue "Plant Growth Regulators for Improving the Yield and Quality of Horticultural Crops"

A special issue of Horticulturae (ISSN 2311-7524).

Deadline for manuscript submissions: 30 September 2019.

Special Issue Editors

Guest Editor
Prof. Dr. Antonio Ferrante

Department of Agricultural and Environmental Sciences, University of Milano, via Celoria 2, 20133 Milano, Italy
Website | E-Mail
Phone: +39 02 503 16789
Fax: +39 02 50316575
Interests: abiotic stresses; crop eco-physiology; plant hormones; postharvest; senescence; vegetables quality; protected cultivation
Guest Editor
Dr. Giacomo Cocetta

Department of Agricultural and Environmental Sciences, University of Milano, via Celoria 2, 20133 Milano, Italy
Website | E-Mail
Interests: chlorophyll a fluorescence; crop physiology; fruit quality; plant hormones; postharvest; senescence; vegetables quality
Guest Editor
Dr. Igor Pacheco Cruz

INTA, Universidad de Chile, Avenida El Lı́bano, 5524 Macul, Santiago, Chile
Website | E-Mail
Interests: fruit quality; phenolic compound content; quantitative genetics; genomics; breeding

Special Issue Information

Dear Colleagues,

The economic value of horticultural productions is strongly affected by the yield and quality attributes. The quality of horticultural crops is related to several aspects, such as, external appearance, nutritional value, presence of health-related compounds, and safety.

Plant growth regulators (PGRs) are plant hormones or compounds with hormone-like activities, and are either naturally occurring or synthetic compounds. PGRs are active at very low concentrations and interfere with plant hormones’ equilibrium. They include auxins, gibberellins, cytokinins, abscisic acid, ethylene, brassinosteroids, and jasmonates. The use of various classes of PGRs has become common practice in horticulture during cultivation, as well as during the postharvest management of produce. Their application can lead to a higher yield, lower susceptibility or increased tolerance against the biotic and abiotic stresses, enhancing of nutraceutical properties, and a uniformity of ripening or development.

A better understanding of the mechanisms of action and physiological events triggered by PGR applications is crucial for crop management and quality preservation. The understanding of the mode of action of new and older PGRs is still an important research issue that needs to be investigated, using innovative analytical, physiological, biochemical, and molecular biology approaches.

The Special Issue aims to collect research papers and reviews focusing on the mode of action of PGRs and on their effectiveness in improving the yield and quality of produce, both during cultivation and in postharvest. Therefore, research articles, reviews, short notes, and opinion articles related to PGR studies and applications to horticultural crops are welcome for this Special Issue.

Prof. Dr. Antonio Ferrante
Dr. Giacomo Cocetta
Dr. Igor Pacheco Cruz
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 papers will be 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. Horticulturae is an international peer-reviewed open access quarterly 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 1000 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.

Published Papers (2 papers)

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Research

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Open AccessArticle
Applications of Abscisic Acid and Increasing Concentrations of Calcium Affect the Partitioning of Mineral Nutrients between Tomato Leaf and Fruit Tissue
Horticulturae 2019, 5(3), 49; https://doi.org/10.3390/horticulturae5030049
Received: 26 April 2019 / Revised: 19 June 2019 / Accepted: 23 June 2019 / Published: 9 July 2019
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Abstract
This study examined how abscisic acid (ABA) and calcium (Ca) concentrations in nutrient solution affect concentrations of mineral nutrients in tomato leaves and fruit. Tomato plants were grown in a greenhouse at 25/20 °C (day/night) under a 16 h photoperiod. Plants were treated [...] Read more.
This study examined how abscisic acid (ABA) and calcium (Ca) concentrations in nutrient solution affect concentrations of mineral nutrients in tomato leaves and fruit. Tomato plants were grown in a greenhouse at 25/20 °C (day/night) under a 16 h photoperiod. Plants were treated with different concentrations of ABA and Ca. Calcium was applied via the irrigation lines at 60, 90, or 180 mg·L−1. ABA was applied as a combination of foliar sprays and root applications. For foliar ABA applications, treatments consisted of deionized (DI) water control (0.0 mg·L−1 ABA) or 500 mg·L−1 ABA. For ABA root applications, treatments consisted of no ABA control (0.0 mg·L−1 ABA) or 50 mg·L−1 ABA applied via the irrigation lines. Results indicate that mineral nutrient concentrations in tomato leaf and fruit tissue varied in connection with each exogenous application of ABA. Variability in mineral nutrient concentration depended on if ABA was applied to the leaf or root tissue. Additionally, increasing Ca treatment concentrations either decreased or did not change mineral nutrients in tomato and fruit tissue. Thus, tomato plants react to acquiring mineral nutrients in numerous mechanisms and, depending on how the applications of exogenous ABA are applied, can have varying effects on these mechanisms. Full article

Review

Jump to: Research

Open AccessReview
Recent Advances in Hormonal Regulation and Cross-Talk during Non-Climacteric Fruit Development and Ripening
Horticulturae 2019, 5(2), 45; https://doi.org/10.3390/horticulturae5020045
Received: 4 March 2019 / Revised: 4 May 2019 / Accepted: 13 May 2019 / Published: 3 June 2019
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Abstract
Fleshy fruits are characterized by having a developmentally and genetically controlled, highly intricate ripening process, leading to dramatic modifications in fruit size, texture, color, flavor, and aroma. Climacteric fruits such as tomato, pear, banana, and melon show a ripening-associated increase in respiration and [...] Read more.
Fleshy fruits are characterized by having a developmentally and genetically controlled, highly intricate ripening process, leading to dramatic modifications in fruit size, texture, color, flavor, and aroma. Climacteric fruits such as tomato, pear, banana, and melon show a ripening-associated increase in respiration and ethylene production and these processes are well-documented. In contrast, the hormonal mechanism of fruit development and ripening in non-climacteric fruit, such as strawberry, grape, raspberry, and citrus, is not well characterized. However, recent studies have shown that non-climacteric fruit development and ripening, involves the coordinated action of different hormones, such as abscisic acid (ABA), auxin, gibberellins, ethylene, and others. In this review, we discuss and evaluate the recent research findings concerning the hormonal regulation of non-climacteric fruit development and ripening and their cross-talk by taking grape, strawberry, and raspberry as reference fruit species. Full article
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