A fruit firmness QTL identified on linkage group 4 in sweet cherry (Prunus avium L.) is associated with domesticated and bred germplasm

Publication Overview
TitleA fruit firmness QTL identified on linkage group 4 in sweet cherry (Prunus avium L.) is associated with domesticated and bred germplasm
AuthorsCai L, Quero-García J, Barreneche T, Dirlewanger E, Saski C, Iezzoni A
TypeJournal Article
Journal NameScientific reports
Volume9
Issue1
Year2019
Page(s)5008
CitationCai L, Quero-García J, Barreneche T, Dirlewanger E, Saski C, Iezzoni A. A fruit firmness QTL identified on linkage group 4 in sweet cherry (Prunus avium L.) is associated with domesticated and bred germplasm. Scientific reports. 2019 Mar 21; 9(1):5008.

Abstract

Fruit firmness is an important market driven trait in sweet cherry (Prunus avium L.) where the desirable increase in fruit firmness is associated with landrace and bred cultivars. The aim of this work was to investigate the genetic basis of fruit firmness using plant materials that include wild cherry (syn. mazzard), landrace and bred sweet cherry germplasm. A major QTL for fruit firmness, named qP-FF4.1, that had not previously been reported, was identified in three sweet cherry populations. Thirteen haplotypes (alleles) associated with either soft or firm fruit were identified for qP-FF4.1 in the sweet cherry germplasm, and the "soft" alleles were dominant over the "firm" alleles. The finding that sweet cherry individuals that are homozygous for the "soft" alleles for qP-FF4.1 are exclusively mazzards and that the vast majority of the bred cultivars are homozygous for "firm" alleles suggests that this locus is a signature of selection. Candidate genes related to plant cell wall modification and various plant hormone signaling pathways were identified, with an expansin gene being the most promising candidate. These results advance our understanding of the genetic basis of fruit firmness and will help to enable the use of DNA informed breeding for this trait in sweet cherry breeding programs.

Projects
This publication contains information about 1 projects:
Project NameDescription
SweetCherry-Fruitfirmness-Cai-2019
Featuremaps
This publication contains information about 2 maps:
Map Name
SweetCherry-FX-F1-Fercer
SweetCherry-FX-F1-X
Stocks
This publication contains information about 2 stocks:
Stock NameUniquenameType
FercerFercercultivar
XXbreeding_research_material
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DatabaseAccession
PMID: PubMedPMID:30899090