Special Issue "Formation Mechanism and Regulation of Fruit Quality"

A special issue of Plants (ISSN 2223-7747). This special issue belongs to the section "Plant Physiology and Metabolism".

Deadline for manuscript submissions: closed (30 September 2023) | Viewed by 1578

Special Issue Editors

1. College of Horticulture, Sichuan Agricultural University, Chengdu 611130, China
2. Institute of Pomology and Olericulture, Sichuan Agricultural University, Chengdu 611130, China
Interests: fruit quality; horticultural plants; quality formation mechanisms
1. College of Horticulture, Sichuan Agricultural University, Chengdu 611130, China
2. Institute of Pomology and Olericulture, Sichuan Agricultural University, Chengdu 611130, China
Interests: citrus; mandarins; Pomology; Fruit Cultivation; fruit quality

Special Issue Information

Dear Colleagues,

The formation of fruit quality includes many aspects, such as organic acids, anthocyanins, carotenoids, and polyphenols. Their contents change dynamically in the process of fruit development and vary among different species and even varieties, thus resulting in fruit products with a wide range of shapes, colors, and flavors. In addition, these quality indicators are also regulated by external environmental factors, such as light and temperature. Understanding the physiological processes and regulatory mechanisms of fruit quality formation can lay the foundation for further improving fruit nutritional value.

This Special Issue will focus on the “Formation Mechanisms and Regulation of Fruit Quality”. We invite you to share your contributions on the following topics: 1) the characteristics of the fruit quality formation of some special fruits; 2) regulatory mechanisms of fruit quality. It is targeted at a wide range of fruit species, such as grapes, strawberries, blueberries, kiwi, apples, citrus, plums, pears, and more.

Prof. Dr. Hui Xia
Dr. Honghong Deng
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. Plants is an international peer-reviewed open access semimonthly 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

  • fruit species
  • fruit quality formation
  • organic acids
  • anthocyanins
  • carotenoids
  • polyphenols
  • fruit shapes
  • fruit colors
  • fruit flavors
  • physiological processes
  • regulatory mechanisms

Published Papers (1 paper)

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Research

20 pages, 3446 KiB  
Article
Metabolomics and Transcriptomics Provide Insights into Lipid Biosynthesis in the Embryos of Walnut (Juglans regia L.)
Plants 2023, 12(3), 538; https://doi.org/10.3390/plants12030538 - 24 Jan 2023
Cited by 2 | Viewed by 1217
Abstract
Walnut (Juglans regia L.) is an important woody oilseed tree species due to its commercial value. However, the regulation mechanism of walnut oil accumulation is still poorly understood, which restricted the breeding and genetic improvement of high-quality oil-bearing walnuts. In order to [...] Read more.
Walnut (Juglans regia L.) is an important woody oilseed tree species due to its commercial value. However, the regulation mechanism of walnut oil accumulation is still poorly understood, which restricted the breeding and genetic improvement of high-quality oil-bearing walnuts. In order to explore the metabolic mechanism that regulates the synthesis of walnut oil, we used transcriptome sequencing technology and metabolome technology to comprehensively analyze the key genes and metabolites involved in oil synthesis of the walnut embryo at 60, 90, and 120 days after pollination (DAP). The results showed that the oil and protein contents increased gradually during fruit development, comprising 69.61% and 18.32% of the fruit, respectively, during ripening. Conversely, the contents of soluble sugar and starch decreased gradually during fruit development, comprising 2.14% and 0.84%, respectively, during ripening. Transcriptome sequencing generated 40,631 unigenes across 9 cDNA libraries. We identified 51 and 25 candidate unigenes related to the biosynthesis of fatty acid and the biosynthesis of triacylglycerol (TAG), respectively. The expression levels of the genes encoding Acetyl-CoA carboxylase (ACCase), long-chain acyl-CoA synthetases (LACS), 3-oxoacyl-ACP synthase II (KASII), and glycerol-3-phosphate acyl transfer (GPAT) were upregulated at 60 DAP relative to the levels at 90 and 120 DAP, while the stearoyl-ACP-desaturase (SAD) and fatty acid desaturase 2 (FAD2) genes were highly abundantly expressed during all walnut developmental periods. We found that ABSCISIC ACID INSENSEITIVE3 (ABI3), WRINKLEDl (WRI1), LEAFY COTYLEDON1 (LEC1), and FUSCA3 (FUS3) may be key transcription factors involved in lipid synthesis. Additionally, the metabolomics analysis detected 706 metabolites derived from 18 samples, among which, 4 are implicated in the TAG synthesis, 2 in the glycolysis pathway, and 5 in the tricarboxylic acid cycle (TCA cycle) pathway. The combined analysis of the related genes and metabolites in TAG synthesis showed that phospholipid:diacylglycerol acyltransferase (PDAT) genes were highly abundantly expressed across walnut fruit developmental periods, and their downstream metabolite TAG gradually accumulated with the progression of fruit development. The FAD2 gene showed consistently higher expression during fruit development, and its downstream metabolites 18:2-PC and 18:3-PC gradually accumulated. The ACCase, LACS, SAD, FAD2, and PDAT genes may be crucial genes required for walnut oil synthesis. Our data will enrich public databases and provide new insights into functional genes related to lipid metabolism in walnut. Full article
(This article belongs to the Special Issue Formation Mechanism and Regulation of Fruit Quality)
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