Fine mapping of a thrips resistance QTL in Capsicum and the role of diterpene glycosides in the underlying mechanism

Key message A major thrips resistance QTL in Capsicum was fine-mapped to a region of 0.4 Mbp, and a multidisciplinary approach has been used to study putative underlying mechanisms. Resistance to thrips is an important trait for pepper growers. These insects can cause extensive damage to fruits, flo...

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Veröffentlicht in:Theoretical and applied genetics 2021-05, Vol.134 (5), p.1557-1573
Hauptverfasser: van Haperen, Pauline, Voorrips, Roeland E., van Kaauwen, Martijn, van Eekelen, Henriëtte D. L. M., de Vos, Ric C. H., van Loon, Joop J. A., Vosman, Ben
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container_end_page 1573
container_issue 5
container_start_page 1557
container_title Theoretical and applied genetics
container_volume 134
creator van Haperen, Pauline
Voorrips, Roeland E.
van Kaauwen, Martijn
van Eekelen, Henriëtte D. L. M.
de Vos, Ric C. H.
van Loon, Joop J. A.
Vosman, Ben
description Key message A major thrips resistance QTL in Capsicum was fine-mapped to a region of 0.4 Mbp, and a multidisciplinary approach has been used to study putative underlying mechanisms. Resistance to thrips is an important trait for pepper growers. These insects can cause extensive damage to fruits, flowers and leaves on field and greenhouse grown plants worldwide. Two independent studies in Capsicum identified diterpene glycosides as metabolites that are correlated with thrips resistance. In this study, we fine-mapped a previously defined thrips resistance QTL on chromosome 6, to a region of 0.4 Mbp harbouring 15 genes. Two of these 15 candidate genes showed differences in gene expression upon thrips induction, when comparing plants carrying the resistance allele in homozygous state to plants with the susceptibility allele in homozygous state for the QTL region. Three genes, including the two genes that showed difference in gene expression, contained a SNP that was predicted to lead to changes in protein structure. Therefore, these three genes, i.e. an acid phosphatase 1 (APS1), an organic cation/carnitine transporter 7 (OCT7) and an uncharacterized locus LOC107874801, are the most likely candidates for playing a role in thrips resistance and are a first step in elucidating the genetic basis of thrips resistance in Capsicum . In addition, we show that the diterpene glycoside profiles did not differ between plants with the resistance and susceptibility allele for the chromosome 6 QTL, suggesting that these compounds do not play a role in the resistance conferred by the genes located in the major thrips resistance QTL studied.
doi_str_mv 10.1007/s00122-021-03790-6
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A. ; Vosman, Ben</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c575t-5411270c9ae582e90ce811d29154d7e0bd4d9ba0838823bb693fa670348489f33</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2021</creationdate><topic>Acid phosphatase</topic><topic>Agriculture</topic><topic>Alleles</topic><topic>Animals</topic><topic>Biochemistry</topic><topic>Biomedical and Life Sciences</topic><topic>Biotechnology</topic><topic>Capsicum</topic><topic>Capsicum - genetics</topic><topic>Capsicum - growth &amp; development</topic><topic>Capsicum - metabolism</topic><topic>Capsicum - parasitology</topic><topic>Carnitine</topic><topic>Cation/carnitine transporter</topic><topic>Chromosome 6</topic><topic>Chromosome Mapping - methods</topic><topic>Chromosomes, Plant - genetics</topic><topic>Disease Resistance - genetics</topic><topic>Disease Resistance - immunology</topic><topic>Diterpenes</topic><topic>Flowers</topic><topic>Gene expression</topic><topic>Gene Expression Regulation, Plant</topic><topic>Gene mapping</topic><topic>Genes</topic><topic>Genome, Plant</topic><topic>Genome-Wide Association Study</topic><topic>Glycosides</topic><topic>Glycosides - metabolism</topic><topic>Host-Parasite Interactions</topic><topic>Life Sciences</topic><topic>Metabolites</topic><topic>Original</topic><topic>Original Article</topic><topic>Pest resistance</topic><topic>Phenotype</topic><topic>Plant Biochemistry</topic><topic>Plant Breeding</topic><topic>Plant Breeding/Biotechnology</topic><topic>Plant Diseases - genetics</topic><topic>Plant Diseases - parasitology</topic><topic>Plant Genetics and Genomics</topic><topic>Plant Proteins - genetics</topic><topic>Plant Proteins - metabolism</topic><topic>Protein structure</topic><topic>Quantitative genetics</topic><topic>Quantitative Trait Loci</topic><topic>Single nucleotide polymorphisms</topic><topic>Single-nucleotide polymorphism</topic><topic>Thrips</topic><topic>Thysanoptera - physiology</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>van Haperen, Pauline</creatorcontrib><creatorcontrib>Voorrips, Roeland E.</creatorcontrib><creatorcontrib>van Kaauwen, Martijn</creatorcontrib><creatorcontrib>van Eekelen, Henriëtte D. 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Two independent studies in Capsicum identified diterpene glycosides as metabolites that are correlated with thrips resistance. In this study, we fine-mapped a previously defined thrips resistance QTL on chromosome 6, to a region of 0.4 Mbp harbouring 15 genes. Two of these 15 candidate genes showed differences in gene expression upon thrips induction, when comparing plants carrying the resistance allele in homozygous state to plants with the susceptibility allele in homozygous state for the QTL region. Three genes, including the two genes that showed difference in gene expression, contained a SNP that was predicted to lead to changes in protein structure. Therefore, these three genes, i.e. an acid phosphatase 1 (APS1), an organic cation/carnitine transporter 7 (OCT7) and an uncharacterized locus LOC107874801, are the most likely candidates for playing a role in thrips resistance and are a first step in elucidating the genetic basis of thrips resistance in Capsicum . In addition, we show that the diterpene glycoside profiles did not differ between plants with the resistance and susceptibility allele for the chromosome 6 QTL, suggesting that these compounds do not play a role in the resistance conferred by the genes located in the major thrips resistance QTL studied.</abstract><cop>Berlin/Heidelberg</cop><pub>Springer Berlin Heidelberg</pub><pmid>33609141</pmid><doi>10.1007/s00122-021-03790-6</doi><tpages>17</tpages><orcidid>https://orcid.org/0000-0003-4942-8342</orcidid><oa>free_for_read</oa></addata></record>
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subjects Acid phosphatase
Agriculture
Alleles
Animals
Biochemistry
Biomedical and Life Sciences
Biotechnology
Capsicum
Capsicum - genetics
Capsicum - growth & development
Capsicum - metabolism
Capsicum - parasitology
Carnitine
Cation/carnitine transporter
Chromosome 6
Chromosome Mapping - methods
Chromosomes, Plant - genetics
Disease Resistance - genetics
Disease Resistance - immunology
Diterpenes
Flowers
Gene expression
Gene Expression Regulation, Plant
Gene mapping
Genes
Genome, Plant
Genome-Wide Association Study
Glycosides
Glycosides - metabolism
Host-Parasite Interactions
Life Sciences
Metabolites
Original
Original Article
Pest resistance
Phenotype
Plant Biochemistry
Plant Breeding
Plant Breeding/Biotechnology
Plant Diseases - genetics
Plant Diseases - parasitology
Plant Genetics and Genomics
Plant Proteins - genetics
Plant Proteins - metabolism
Protein structure
Quantitative genetics
Quantitative Trait Loci
Single nucleotide polymorphisms
Single-nucleotide polymorphism
Thrips
Thysanoptera - physiology
title Fine mapping of a thrips resistance QTL in Capsicum and the role of diterpene glycosides in the underlying mechanism
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