Identification of QTLs controlling aroma volatiles using a ‘Fortune’ x ‘Murcott’ (Citrus reticulata) population

Publication Overview
TitleIdentification of QTLs controlling aroma volatiles using a ‘Fortune’ x ‘Murcott’ (Citrus reticulata) population
AuthorsYu Y, Bai J, Chen C, Plotto A, Yu Q, Baldwin EA, Gmitter FG
TypeJournal Article
Journal NameBMC Genomics
Volume18
Issue646
Year2017
CitationYu Y, Bai J, Chen C, Plotto A, Yu Q, Baldwin EA, Gmitter FG. Identification of QTLs controlling aroma volatiles using a ‘Fortune’ x ‘Murcott’ (Citrus reticulata) population. BMC Genomics. 2017; 18(646).

Abstract

Background Flavor is an important attribute of mandarin (Citrus reticulata Blanco), but flavor improvement via conventional breeding is very challenging largely due to the complexity of the flavor components and traits. Many aroma associated volatiles of citrus fruit have been identified, which are directly related to flavor, but knowledge of genetic linkages and relevant genes for these volatiles, along with applicable markers potentially for expeditious and economical marker-assisted selection (MAS), is very limited. The objective of this project was to identify single nucleotide polymorphism (SNP) markers associated with these volatile traits. Result Aroma volatiles were investigated in two mandarin parents (‘Fortune’ and ‘Murcott’) and their 116 F1 progeny using gas chromatography mass spectrometry in 2012 and 2013. A total of 148 volatiles were detected, including one acid, 12 alcohols, 20 aldehydes, 14 esters, one furan, three aromatic hydrocarbons, 16 ketones, one phenol, 27 sesquiterpenes, 15 monoterpenes, and 38 unknowns. A total of 206 quantitative trait loci (QTLs) were identified for 94 volatile compounds using genotyping data generated from a 1536-SNP Illumina GoldenGate assay. In detail, 25 of the QTLs were consistent over more than two harvest times. Forty-one QTLs were identified for 17 aroma active compounds that included 18 sesquiterpenes and were mapped onto four genomic regions. Fifty QTLs were for 14 monoterpenes and mapped onto five genomic regions. Candidate genes for some QTLs were also identified. A QTL interval for monoterpenes and sesquiterpenes on linkage group 2 contained four genes: geranyl diphosphate synthase 1, terpene synthase 3, terpene synthase 4, and terpene synthase 14. Conclusions Some fruit aroma QTLs were identified and the candidate genes in the terpenoid biosynthetic pathway were found within the QTL intervals. These QTLs could lead to an efficient and feasible MAS approach to mandarin flavor improvement.
Featuremaps
This publication contains information about 2 maps:
Map Name
Citrus-Fortune/Murcott-Fortune-F1-2017
Citrus-Fortune/Murcott-Murcott-F1-2017
Stocks
This publication contains information about 3 stocks:
Stock NameUniquenameType
FortuneFortunecultivar
MurcottMurcottcultivar
Citrus-Fortune/Murcott-F1Citrus-Fortune/Murcott-F1population
Features
This publication contains information about 471 features:
Feature NameUniquenameType
m3_s8m3_s8genetic_marker
m1022_s8m1022_s8genetic_marker
m1433_s8m1433_s8genetic_marker
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m954_s8m954_s8genetic_marker
m318_s8m318_s8genetic_marker
m18_s8m18_s8genetic_marker
m1_s8m1_s8genetic_marker
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m1397_s9m1397_s9genetic_marker
m1183_s9m1183_s9genetic_marker
m467_s9m467_s9genetic_marker

Pages

Projects
This publication contains information about 1 projects:
Project NameDescription
Citrus-AromaVolatiles-Yu-2017
Properties
Additional details for this publication include:
Property NameValue
DOIhttps://doi.org/10.1186/s12864-017-4043-5
URLhttps://bmcgenomics.biomedcentral.com/articles/10.1186/s12864-017-4043-5
Year2017