Genetic and Metabolic Analysis to Improve 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 (31 May 2023) | Viewed by 1864

Special Issue Editor


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Guest Editor
Department of Pomology, Estación Experimental de Aula Dei-CSIC (EEAD-CSIC), Avda. Montañana 1.005, E-50059 Zaragoza, Spain
Interests: development and application of physiological, biochemical and molecular techniques for the selection and characterization of fruit trees well-adapted to Mediterranean conditions and genotyping traditional genetic resources of the genus Prunus and Malus; identification of genomic regions related to fruit quality traits and rootstocks influence; scion–rootstock graft compatibility; genetic analysis and genome-wide association; conservation of genetic resources from the Rosaceae family; breeding of fruit trees with good organoleptic properties and rich in phytochemicals compounds with roles in human nutrition and health
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Special Issue Information

Dear Colleagues,

This Special Issue explores the field of plant genetics and metabolic analysis to improve fruit quality and understand how these factors affect fruit phenotype, metabolism, flavor and postharvest performance. Research is interested in different aspects of genomics and the biochemical characterization of genetic diversity that will help to elucidate the genetics of important fruit quality traits. It aims to apply this information to develop tools, as high-quality markers for marker-assisted selection and transcriptomic and metabolic analysis (including metabolomics), to improve fruit breeding efficiency, also allowing technological advances in fruit trait determination. The development and optimization of methodologies for the quantification of phytochemical, antioxidant and biologically active compounds of fruits and research of the effect of those compounds in biological systems will also be considered. Metabolic pathways of fruit volatiles and regulation of flavor quality, as well as the metabolic diversity of plant fruits and their usage as phytochemical resources with roles in human nutrition and health, will be taken into account.

Dr. María-Ángeles Moreno
Guest Editor

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Keywords

  • antioxidants
  • chromatography
  • genomics
  • plant breeding
  • phenolics
  • secondary metabolites
  • phytochemistry
  • metabolomics
  • metabolic pathways

Published Papers (1 paper)

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Research

29 pages, 3051 KiB  
Article
Population Structure and Association Mapping for Agronomical and Biochemical Traits of a Large Spanish Apple Germplasm
by Pierre Mignard, Carolina Font i Forcada, Rosa Giménez and María Ángeles Moreno
Plants 2023, 12(6), 1249; https://doi.org/10.3390/plants12061249 - 09 Mar 2023
Cited by 3 | Viewed by 1438
Abstract
A basic knowledge of linkage disequilibrium and population structure is necessary in order to determine the genetic control and identify significant associations with agronomical and phytochemical compounds in apple (Malus × domestica Borkh). In this study, 186 apple accessions (Pop1), representing both [...] Read more.
A basic knowledge of linkage disequilibrium and population structure is necessary in order to determine the genetic control and identify significant associations with agronomical and phytochemical compounds in apple (Malus × domestica Borkh). In this study, 186 apple accessions (Pop1), representing both Spanish native accessions (94) and non-Spanish cultivars (92) from the EEAD-CSIC apple core collection, were assessed using 23 SSRs markers. Four populations were considered: Pop1, Pop2, Pop3, and Pop4. The initial Pop1 was divided into 150 diploid (Pop2) and 36 triploid accessions (Pop3), while for the inter-chromosomal linkage disequilibrium and the association mapping analysis, 118 phenotype diploid accessions were considered Pop4. Thus, the average number of alleles per locus and observed heterozygosity for the overall sample set (Pop1) were 15.65 and 0.75, respectively. The population structure analysis identified two subpopulations in the diploid accessions (Pop2 and Pop4) and four in the triploids (Pop3). Regarding the Pop4, the population structure with K = 2 subpopulations segregation was in agreement with the UPGMA cluster analysis according to the genetic pairwise distances. Moreover, the accessions seemed to be segregated by their origin (Spanish/non-Spanish) in the clustering analysis. One of the two subpopulations encountered was quite-exclusively formed by non-Spanish accessions (30 out of 33). Furthermore, agronomical and basic fruit quality parameters, antioxidant traits, individual sugars, and organic acids were assessed for the association mapping analysis. A high level of biodiversity was exhibited in the phenotypic characterization of Pop4, and a total of 126 significant associations were found between the 23 SSR markers and the 21 phenotypic traits evaluated. This study also identified many new marker-locus trait associations for the first time, such as in the antioxidant traits or in sugars and organic acids, which may be useful for predictions and for a better understanding of the apple genome. Full article
(This article belongs to the Special Issue Genetic and Metabolic Analysis to Improve Fruit Quality)
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