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
m357_s3m357_s3genetic_marker
m1207_s3m1207_s3genetic_marker
m1347_s3m1347_s3genetic_marker
m727_s3m727_s3genetic_marker
m590_s3m590_s3genetic_marker
m1223_s3m1223_s3genetic_marker
m353_s3m353_s3genetic_marker
m464_s3m464_s3genetic_marker
m924_s3m924_s3genetic_marker
m667_s3m667_s3genetic_marker
m948_s3m948_s3genetic_marker
m880_s3m880_s3genetic_marker
m1333_s3m1333_s3genetic_marker
m349_s3m349_s3genetic_marker
m161_s3m161_s3genetic_marker
m331_s3m331_s3genetic_marker
m132_s3m132_s3genetic_marker
m387_s3m387_s3genetic_marker
m228_s3m228_s3genetic_marker
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m747_s3m747_s3genetic_marker
m561_s3m561_s3genetic_marker
m779_s3m779_s3genetic_marker
m159_s3m159_s3genetic_marker
m1455_s3m1455_s3genetic_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