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Advances in Genetics, Epigenetics and Postharvest Biology of Fruits
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Advances in Genetics, Epigenetics and Postharvest Biology of Fruits

A special issue of International Journal of Molecular Sciences (ISSN 1422-0067). This special issue belongs to the section "Molecular Plant Sciences".

Deadline for manuscript submissions: 30 September 2024 | Viewed by 3335

Special Issue Editor

Prof. Dr. Xiangbin Xu

E-Mail Website
Guest Editor
School of Food Science and Engineering, Hainan University, Haikou 570228, China
Interests: postharvest biology; fruit; ripening; senescence; chilling injury; pathogen infection
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The economic losses caused by the postharvest decay of fruits are enormous. The pre- and postharvest biology and technology are important to maintain the quality and flavor of fruits, and to avoid economic losses. Understanding the molecular mechanisms of fruits in response to pre- and postharvest ripening and senescence, chilling injury, browning, pathogen infection, etc., is important for the storage of fruits and for extending their shelf-life. This Special Issue, entitled 'Advances in Genetics, Epigenetics and Postharvest Biology of Fruits', will explore advances in the pre- and postharvest biology and technology of fruits, and promote the development of fruit storage technologies. Both original articles and reviews are welcome.

Prof. Dr. Xiangbin Xu
Guest Editor

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. International Journal of Molecular Sciences is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. There is an Article Processing Charge (APC) for publication in this open access journal. For details about the APC please see here. 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 biology
  • fruit
  • ripening
  • senescence
  • chilling injury
  • browning
  • nutrition
  • pathogen infection

Published Papers (3 papers)

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Research

18 pages, 5687 KiB  
Article
Transcriptome and Metabolome Analyses Reveal Sugar and Acid Accumulation during Apricot Fruit Development
by Ningning Gou, Chen Chen, Mengzhen Huang, Yujing Zhang, Haikun Bai, Hui Li, Lin Wang and Tana Wuyun
Int. J. Mol. Sci. 2023, 24(23), 16992; https://doi.org/10.3390/ijms242316992 - 30 Nov 2023
Viewed by 940
Abstract
The apricot (Prunus armeniaca L.) is a fruit that belongs to the Rosaceae family; it has a unique flavor and is of important economic and nutritional value. The composition and content of soluble sugars and organic acids in fruit are key factors [...] Read more.
The apricot (Prunus armeniaca L.) is a fruit that belongs to the Rosaceae family; it has a unique flavor and is of important economic and nutritional value. The composition and content of soluble sugars and organic acids in fruit are key factors in determining the flavor quality. However, the molecular mechanism of sugar and acid accumulation in apricots remains unclear. We measured sucrose, fructose, glucose, sorbitol, starch, malate, citric acid, titratable acid, and pH, and investigated the transcriptome profiles of three apricots (the high-sugar cultivar ‘Shushanggan’, common-sugar cultivar ‘Sungold’, and low-sugar cultivar ‘F43’) at three distinct developmental phases. The findings indicated that ‘Shushanggan’ accumulates a greater amount of sucrose, glucose, fructose, and sorbitol, and less citric acid and titratable acid, resulting in a better flavor; ‘Sungold’ mainly accumulates more sucrose and less citric acid and starch for the second flavor; and ‘F43’ mainly accumulates more titratable acid, citric acid, and starch for a lesser degree of sweetness. We investigated the DEGs associated with the starch and sucrose metabolism pathways, citrate cycle pathway, glycolysis pathway, and a handful of sugar transporter proteins, which were considered to be important regulators of sugar and acid accumulation. Additionally, an analysis of the co-expression network of weighted genes unveiled a robust correlation between the brown module and sucrose, glucose, and fructose, with VIP being identified as a hub gene that interacted with four sugar transporter proteins (SLC35B3, SLC32A, SLC2A8, and SLC2A13), as well as three structural genes for sugar and acid metabolism (MUR3, E3.2.1.67, and CSLD). Furthermore, we found some lncRNAs and miRNAs that regulate these genes. Our findings provide clues to the functional genes related to sugar metabolism, and lay the foundation for the selection and cultivation of high-sugar apricots in the future. Full article
(This article belongs to the Special Issue Advances in Genetics, Epigenetics and Postharvest Biology of Fruits)
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16 pages, 5073 KiB  
Article
Regulation of Embden–Meyerhof–Parnas (EMP) Pathway and Tricarboxylic Acid (TCA) Cycle Concerning Aberrant Chilling Injury Behavior in Postharvest Papaya (Carica papaya L.)
by Lijin Huang, Shoukui Tao, Yi Zhu, Yonggui Pan, Zhengke Zhang, Zhiqian Yu and Yezhen Chen
Int. J. Mol. Sci. 2023, 24(18), 13898; https://doi.org/10.3390/ijms241813898 - 09 Sep 2023
Viewed by 1139
Abstract
Postharvest abnormal chilling injury (CI) behavior in papaya (Carica papaya L.) fruit is a rare phenomenon that may be associated with respiratory metabolism. This study thus aimed to investigate the impacts of storage temperatures (1 and 6 °C) on the respiratory metabolism [...] Read more.
Postharvest abnormal chilling injury (CI) behavior in papaya (Carica papaya L.) fruit is a rare phenomenon that may be associated with respiratory metabolism. This study thus aimed to investigate the impacts of storage temperatures (1 and 6 °C) on the respiratory metabolism of postharvest papaya and its impact on CI development. Results demonstrated that 1 °C storage reduced the activities of hexokinase (HK), phosphofructokinase (PFK), pyruvate kinase (PK), citrate synthase (CS), and α-ketoglutarate dehydrogenase (α-KGDH) and regulated the expression of corresponding enzymes in the Embden–Meyerhof–Parnas (EMP) pathway and tricarboxylic acid (TCA) cycle compared with 6 °C storage, resulting in a lower respiration rate of the EMP-TCA pathway and mitigating the development of CI. Meanwhile, lower contents of nicotinamide adenine dinucleotide (hydrogen) (NAD(H)) were observed in papaya fruit stored at 1 °C. Notably, papaya fruit stored at 1 °C maintained higher activity and transcriptional levels of SDH and IDH during the whole storage period. These findings suggest that 1 °C storage reduced the respiration rate of the EMP-TCA pathway by reducing the expression level and activity of related enzymes, which is conducive to the reduction of respiration substrate consumption and finally alleviating the occurrence of CI. Full article
(This article belongs to the Special Issue Advances in Genetics, Epigenetics and Postharvest Biology of Fruits)
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18 pages, 2444 KiB  
Article
The Impact of Elevated Atmospheric Carbon Dioxide Exposure on Magic Tomatoes’ Nutrition–Health Properties
by Linda Boufeldja, Frederic Boudard, Karine Portet, Caroline Guzman, Sylvie Morel, Nathalie Berger, Orianne Duchamp, Claudie Dhuique-Mayer, Christian Dubos and Patrick Poucheret
Int. J. Mol. Sci. 2023, 24(16), 12815; https://doi.org/10.3390/ijms241612815 - 15 Aug 2023
Cited by 1 | Viewed by 754
Abstract
The release of carbon dioxide (CO2) into the atmosphere has accelerated during the last two decades. Elevated atmospheric CO2 concentration (eCO2) is known as an agent that improves plant photosynthesis. However, eCO2 was also correlated with alterations [...] Read more.
The release of carbon dioxide (CO2) into the atmosphere has accelerated during the last two decades. Elevated atmospheric CO2 concentration (eCO2) is known as an agent that improves plant photosynthesis. However, eCO2 was also correlated with alterations in the macronutrient and micronutrient compositions of various dietary crops. In order to explore the effect of eCO2 on the nutritional and health properties of tomatoes, three parental lines of the Magic population, which includes a large part of the genetic diversity present in large fruit varieties, were used as models. The plants were grown in growth chambers under ambient (400 ppm) or eCO2 (900 ppm) conditions. The macronutrient and micronutrient contents were measured. The anti-oxidant and anti-inflammatory bioactivities were assessed in vitro on activated macrophages. These analyses highlighted that the carbohydrate content was not affected by the eCO2, whereas the protein, carotenoid, lycopene, and mineral contents decreased. Regarding the anti-oxidant properties, no influence of eCO2 exposure was observed. Similarly, the anti-inflammatory properties were not affected by the eCO2. These data are in contrast with previous studies conducted on different plant species or accessions, indicating that the effect of eCO2 on crops’ nutrition and health properties is based on complex mechanisms in which growth conditions and genetic backgrounds play a central role. Full article
(This article belongs to the Special Issue Advances in Genetics, Epigenetics and Postharvest Biology of Fruits)
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