A fruit quality gene map of Prunus.

Publication Overview
TitleA fruit quality gene map of Prunus
AuthorsOgundiwin EA, Peace CP, Gradziel TM, Parfitt DE, Bliss FA, Crisosto CH
TypeJournal Article
Journal NameBMC genomics
Volume10
Year2009
Page(s)587
CitationOgundiwin EA, Peace CP, Gradziel TM, Parfitt DE, Bliss FA, Crisosto CH. A fruit quality gene map of Prunus. BMC genomics. 2009; 10:587.

Abstract

BACKGROUND
Prunus fruit development, growth, ripening, and senescence includes major biochemical and sensory changes in texture, color, and flavor. The genetic dissection of these complex processes has important applications in crop improvement, to facilitate maximizing and maintaining stone fruit quality from production and processing through to marketing and consumption. Here we present an integrated fruit quality gene map of Prunus containing 133 genes putatively involved in the determination of fruit texture, pigmentation, flavor, and chilling injury resistance.

RESULTS
A genetic linkage map of 211 markers was constructed for an intraspecific peach (Prunus persica) progeny population, Pop-DG, derived from a canning peach cultivar 'Dr. Davis' and a fresh market cultivar 'Georgia Belle'. The Pop-DG map covered 818 cM of the peach genome and included three morphological markers, 11 ripening candidate genes, 13 cold-responsive genes, 21 novel EST-SSRs from the ChillPeach database, 58 previously reported SSRs, 40 RAFs, 23 SRAPs, 14 IMAs, and 28 accessory markers from candidate gene amplification. The Pop-DG map was co-linear with the Prunus reference T x E map, with 39 SSR markers in common to align the maps. A further 158 markers were bin-mapped to the reference map: 59 ripening candidate genes, 50 cold-responsive genes, and 50 novel EST-SSRs from ChillPeach, with deduced locations in Pop-DG via comparative mapping. Several candidate genes and EST-SSRs co-located with previously reported major trait loci and quantitative trait loci for chilling injury symptoms in Pop-DG.

CONCLUSION
The candidate gene approach combined with bin-mapping and availability of a community-recognized reference genetic map provides an efficient means of locating genes of interest in a target genome. We highlight the co-localization of fruit quality candidate genes with previously reported fruit quality QTLs. The fruit quality gene map developed here is a valuable tool for dissecting the genetic architecture of fruit quality traits in Prunus crops.

Features
This publication contains information about 23 features:
Feature NameUniquenameType
resistance to chilling injuryqCI.DG-G1.9QTL
resistance to chilling injuryqCI.DG-G1.2QTL
resistance to chilling injuryqCI.DG-G1.3QTL
resistance to chilling injuryqCI.DG-G2QTL
resistance to chilling injuryqCI.DG-G3.1QTL
resistance to chilling injuryqCI.DG-G3.2QTL
resistance to chilling injuryqCI.DG-G6.1QTL
resistance to chilling injuryqCI.DG-G6.2QTL
resistance to chilling injuryqCI.DG-G7QTL
resistance to chilling injuryqCI.DG-G8.1QTL
resistance to chilling injuryqCI.DG-G8.2QTL
resistance to chilling injuryqCI.DG-G8.3QTL
chilling requirementqCR.DG-G7QTL
fruit flavor traitqFRF.DG-G1QTL
fruit firmnessqFRFRM.DG-G1.2QTL
fruit firmnessqFRFRM.DG-G4.1QTL
fruit firmnessqFRFRM.DG-G4.2QTL
fruit firmnessqFRFRM.DG-G5QTL
fruit firmnessqFRFRM.DG-G7QTL
fruit firmnessqFRFRM.DG-G8QTL
skin colorqFRCL.DG-G2QTL
skin colorqFRCL.DG-G5QTL
skin colorqFRCL.DG-G7QTL
Featuremaps
This publication contains information about 1 maps:
Map Name
Peach-DG-F1-2009