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Advances in Breeding, Genetics, and Genomics of Fruit Crops

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: closed (30 April 2024) | Viewed by 827

Special Issue Editors


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Guest Editor
Research Centre for Olive, Fruit and Citrus Crops, Council for Agricultural Research and Economics (CREA), Via di Fioranello, 52, 00134 Rome, Italy
Interests: genetics and genomics of fruit crops; new breeding techniques; biodiversity evaluation and exploitation; fruit tree crops breeding

E-Mail Website
Guest Editor
Research Centre for Olive, Fruit and Citrus Crops, Council for Agricultural Research and Economics (CREA), Via di Fioranello, 52, 00134 Rome, Italy
Interests: plant biotechnology; plant genetics; plant genomics

Special Issue Information

Dear Colleagues,

Fruit species represent a fundamental group of crops for the agri-food sector worldwide and fruit consumption contributes to a healthy and sustainable diet satisfying the requirements for vitamins, carotenoids and polyphenolic compounds, and fibers. With the ongoing climate change, increasing world population, and susceptibility to both biotic and abiotic stresses, important drawbacks on productivity and availability are expected, highlighting the need for more sustainable and resilient fruit varieties with high nutritional value. 

Genetic diversity has a key role in answering to future challenges and plant genetic resources (PGRs) are a reservoir of useful genes and alleles. The availability of genomic sequences and technical advancements enabled the massive mining of new molecular markers and the development of a number of high throughput tools to deeply characterize PGRs. 

This special issue will be focused on the evaluation of fruit crop genetic resources through genetics, genomics, and transcriptomic approaches for the exploitation of PGRs to meet the need for more sustainable and secure fruit production.

Dr. Elisa Vendramin
Dr. Micali Sabrina
Guest Editors

Manuscript Submission Information

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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.

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Keywords

  • genetics
  • genomics
  • transcriptomics
  • plant genetic resources
  • SNP
  • SSR
  • GWAS
  • QTLs
  • genomic selections
  • candidate genes

Published Papers (1 paper)

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Research

19 pages, 5542 KiB  
Article
Dissection of Metabolome and Transcriptome—Insights into Capsaicin and Flavonoid Accumulation in Two Typical Yunnan Xiaomila Fruits
by Huaran Hu, Lei Du, Ruihao Zhang, Qiuyue Zhong, Fawan Liu, Weifen Li and Min Gui
Int. J. Mol. Sci. 2024, 25(14), 7761; https://doi.org/10.3390/ijms25147761 (registering DOI) - 16 Jul 2024
Viewed by 179
Abstract
Pepper is an economically important vegetable worldwide, containing various specialized metabolites crucial for its development and flavor. Capsaicinoids, especially, are genus-specialized metabolites that confer a spicy flavor to Capsicum fruits. In this work, two pepper cultivars, YB (Capsicum frutescens L.) and JC [...] Read more.
Pepper is an economically important vegetable worldwide, containing various specialized metabolites crucial for its development and flavor. Capsaicinoids, especially, are genus-specialized metabolites that confer a spicy flavor to Capsicum fruits. In this work, two pepper cultivars, YB (Capsicum frutescens L.) and JC (Capsicum baccatum L.) pepper, showed distinct differences in the accumulation of capsaicin and flavonoid. However, the molecular mechanism underlying them was still unclear. Metabolome analysis showed that the JC pepper induced a more abundant accumulation of metabolites associated with alkaloids, flavonoids, and capsaicinoids in the red ripening stages, leading to a spicier flavor in the JC pepper. Transcriptome analysis confirmed that the increased expression of transcripts associated with phenylpropanoid and flavonoid metabolic pathways occurred in the JC pepper. Integrative analysis of metabolome and transcriptome suggested that four structural genes, 4CL7, 4CL6, CHS, and COMT, were responsible for the higher accumulation of metabolites relevant to capsaicin and flavonoids. Through weighted gene co-expression network analyses, modules related to flavonoid biosynthesis and potential regulators for candidate genes were identified. The promoter analysis of four candidate genes showed they contained several cis-elements that were bonded to MYB, bZIP, and WRKY transcription factors. Further RT-qPCR examination verified three transcription factors, MYB, bZIP53, and WRKY25, that exhibited increased expression in the red ripening stage of the JC pepper compared to YB, which potentially regulated their expression. Altogether, our findings provide comprehensive understanding and valuable information for pepper breeding programs in the future. Full article
(This article belongs to the Special Issue Advances in Breeding, Genetics, and Genomics of Fruit Crops)
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