Postharvest Metabolomics of Plant Products and Secondary Plant Products

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

Deadline for manuscript submissions: closed (31 March 2020) | Viewed by 11826

Special Issue Editors


E-Mail Website
Guest Editor
School of Agriculture, Faculty of Agricultural and Food Sciences, Pontificia Universidad Católica de Valparaíso, Calle San Francisco s/n, La Palma, Quillota, Chile
Interests: postharvest physiology; metabolomics; proteomics; systems biology; plant bioactives
Special Issues, Collections and Topics in MDPI journals

E-Mail Website
Guest Editor
School of Food Sciences, Faculty of Agricultural and Food Sciences, Pontificia Universidad Católica de Valparaíso, Waddington 716, Valparaíso, Chile
Interests: plant bioactives; metabolomics; metabolic networks; quality traits

Special Issue Information

Dear Colleagues,

There is an increasing interest in the field of metabolomics to study key aspects of primary and secondary metabolism of plant products (e.g., fruits, vegetables, and flowers). During the last decade, metabolomics has developed from an emerging field to becoming an essential aspect of almost every study of plant biology. As such, small molecules (with molecular masses ≤1500 Da) constitute the end products of gene expression and define the phenotype under defined physiological conditions at a biochemical level. As a post-genomic approach, metabolomics has proven to be a powerful platform to interrogate biochemistry, metabolism and signalling, and regulatory events. Through different metabolomics platforms, a much deeper knowledge of specific biochemical processes can be obtained. Today, production and extension of shelf life of fruits and vegetables is essential in human nutrition, given the significant pressure not only from climate change but also from changes in consumer preference that demand taste and nutritional value, resulting in a constant need for improved varieties to satisfy the consumers. Metabolism is an obvious target for improving fruit and vegetable production by understanding the mechanisms and their link to plant product phenotypes, thus helping breeding programs and the whole supply chain.

This Special Issue is devoted to “Postharvest Metabolomics of Plant Products” and topics that will be covered include (but are not restricted to) the following: studies on metabolomic analyses of underlying physiological postharvest disorders, adaptation mechanisms to abiotic stresses, and cultivar differences in terms of improved health attributes and any other high-quality improvements.

Dr. Romina Pedreschi
Dr. Claudia Fuentealba
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

  • postharvest
  • metabolomics
  • quality traits
  • abiotic stress
  • phenotype

Published Papers (3 papers)

Order results
Result details
Select all
Export citation of selected articles as:

Research

Jump to: Review

17 pages, 1941 KiB  
Article
Identification of Metabolite and Lipid Profiles in a Segregating Peach Population Associated with Mealiness in Prunus persica (L.) Batsch
by Victoria Lillo-Carmona, Alonso Espinoza, Karin Rothkegel, Miguel Rubilar, Ricardo Nilo-Poyanco, Romina Pedreschi, Reinaldo Campos-Vargas and Claudio Meneses
Metabolites 2020, 10(4), 154; https://doi.org/10.3390/metabo10040154 - 16 Apr 2020
Cited by 13 | Viewed by 3473
Abstract
The peach is the third most important temperate fruit crop considering fruit production and harvested area in the world. Exporting peaches represents a challenge due to the long-distance nature of export markets. This requires fruit to be placed in cold storage for a [...] Read more.
The peach is the third most important temperate fruit crop considering fruit production and harvested area in the world. Exporting peaches represents a challenge due to the long-distance nature of export markets. This requires fruit to be placed in cold storage for a long time, which can induce a physiological disorder known as chilling injury (CI). The main symptom of CI is mealiness, which is perceived as non-juicy fruit by consumers. The purpose of this work was to identify and compare the metabolite and lipid profiles between two siblings from contrasting populations for juice content, at harvest and after 30 days at 0 °C. A total of 119 metabolites and 189 lipids were identified, which showed significant differences in abundance, mainly in amino acids, sugars and lipids. Metabolites displaying significant changes from the E1 to E3 stages corresponded to lipids such as phosphatidylglycerol (PG), monogalactosyldiacylglycerol (MGDG) and lysophosphatidylcholines (LPC), and sugars such as fructose 1 and 1-fructose-6 phosphate. These metabolites might be used as early stage biomarkers associated with mealiness at harvest and after cold storage. Full article
Show Figures

Figure 1

18 pages, 1964 KiB  
Article
The Health Promoting Bioactivities of Lactuca sativa can be Enhanced by Genetic Modulation of Plant Secondary Metabolites
by Hammad Ismail, Anna L. Gillespie, Danielle Calderwood, Haroon Iqbal, Colene Gallagher, Olivier P. Chevallier, Christopher T. Elliott, Xiaobei Pan, Bushra Mirza and Brian D. Green
Metabolites 2019, 9(5), 97; https://doi.org/10.3390/metabo9050097 - 12 May 2019
Cited by 18 | Viewed by 3568
Abstract
Plant secondary metabolites are protective dietary constituents and rol genes evidently increase the synthesis of these versatile phytochemicals. This study subjected a globally important vegetable, lettuce (Lactuca sativa) to a combination of untargeted metabolomics (LC-QTof-MS) and in vitro bioactivity assays. Specifically, [...] Read more.
Plant secondary metabolites are protective dietary constituents and rol genes evidently increase the synthesis of these versatile phytochemicals. This study subjected a globally important vegetable, lettuce (Lactuca sativa) to a combination of untargeted metabolomics (LC-QTof-MS) and in vitro bioactivity assays. Specifically, we examined the differences between untransformed cultured lettuce (UnT), lettuce transformed with either rolABC (RA) or rolC (RC) and commercially grown (COM) lettuce. Of the 5333 metabolite features aligned, deconvoluted and quantified 3637, 1792 and 3737 significantly differed in RA, RC and COM, respectively, compared with UnT. In all cases the number of downregulated metabolites exceeded the number increased. In vitro bioactivity assays showed that RA and RC (but not COM) significantly improved the ability of L. sativa to inhibit α-glucosidase, inhibit dipeptidyl peptidase-4 (DPP-4) and stimulate GLP-1 secretion. We putatively identified 76 lettuce metabolites (sesquiterpene lactones, non-phenolic and phenolic compounds) some of which were altered by several thousand percent in RA and RC. Ferulic acid levels increased 3033–9777%, aminooxononanoic acid increased 1141–1803% and 2,3,5,4′tetrahydroxystilbene-2-O-β-d-glucoside increased 40,272–48,008%. Compound activities were confirmed using commercially obtained standards. In conclusion, rol gene transformation significantly alters the metabolome of L.sativa and enhances its antidiabetic properties. There is considerable potential to exploit rol genes to modulate secondary metabolite production for the development of novel functional foods. This investigation serves as a new paradigm whereby genetic manipulation, metabolomic analysis and bioactivity techniques can be combined to enable the discovery of novel natural bioactives and determine the functional significance of plant metabolites. Full article
Show Figures

Figure 1

Review

Jump to: Research

24 pages, 705 KiB  
Review
The Application of Metabolomics for the Study of Cereal Corn (Zea mays L.)
by Lena Gálvez Ranilla
Metabolites 2020, 10(8), 300; https://doi.org/10.3390/metabo10080300 - 23 Jul 2020
Cited by 22 | Viewed by 4321
Abstract
Corn (Zea mays L.) is an important cereal crop indigenous to the Americas, where its genetic biodiversity is still preserved, especially among native populations from Mesoamerica and South America. The use of metabolomics in corn has mainly focused on understanding the potential [...] Read more.
Corn (Zea mays L.) is an important cereal crop indigenous to the Americas, where its genetic biodiversity is still preserved, especially among native populations from Mesoamerica and South America. The use of metabolomics in corn has mainly focused on understanding the potential differences of corn metabolomes under different biotic and abiotic stresses or to evaluate the influence of genetic and environmental factors. The increase of diet-linked non-communicable diseases has increased the interest to optimize the content of bioactive secondary metabolites in current corn breeding programs to produce novel functional foods. This review provides perspectives on the role of metabolomics in the characterization of health-relevant metabolites in corn biodiversity and emphasizes the integration of metabolomics in breeding strategies targeting the enrichment of phenolic bioactive metabolites such as anthocyanins in corn kernels. Full article
Show Figures

Figure 1

Back to TopTop