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Time-specific and pleiotropic quantitative trait loci coordinately modulate stem growth in Populus.

Identifieur interne : 000664 ( Main/Exploration ); précédent : 000663; suivant : 000665

Time-specific and pleiotropic quantitative trait loci coordinately modulate stem growth in Populus.

Auteurs : Qingzhang Du [République populaire de Chine] ; Xiaohui Yang [République populaire de Chine] ; Jianbo Xie [République populaire de Chine] ; Mingyang Quan [République populaire de Chine] ; Liang Xiao [République populaire de Chine] ; Wenjie Lu [République populaire de Chine] ; Jiaxing Tian [République populaire de Chine] ; Chenrui Gong [République populaire de Chine] ; Jinhui Chen [République populaire de Chine] ; Bailian Li [République populaire de Chine, États-Unis] ; Deqiang Zhang [République populaire de Chine]

Source :

RBID : pubmed:30133117

Descripteurs français

English descriptors

Abstract

In perennial woody plants, the coordinated increase of stem height and diameter during juvenile growth improves competitiveness (i.e. access to light); however, the factors underlying variation in stem growth remain unknown in trees. Here, we used linkage-linkage disequilibrium (linkage-LD) mapping to decipher the genetic architecture underlying three growth traits during juvenile stem growth. We used two Populus populations: a linkage mapping population comprising a full-sib family of 1,200 progeny and an association mapping panel comprising 435 unrelated individuals from nearly the entire natural range of Populus tomentosa. We mapped 311 quantitative trait loci (QTL) for three growth traits at 12 timepoints to 42 regions in 17 linkage groups. Of these, 28 regions encompassing 233 QTL were annotated as 27 segmental homology regions (SHRs). Using SNPs identified by whole-genome re-sequencing of the 435-member association mapping panel, we identified significant SNPs (P ≤ 9.4 × 10-7 ) within 27 SHRs that affect stem growth at nine timepoints with diverse additive and dominance patterns, and these SNPs exhibited complex allelic epistasis over the juvenile growth period. Nineteen genes linked to potential causative alleles that have time-specific or pleiotropic effects, and mostly overlapped with significant signatures of selection within SHRs between climatic regions represented by the association mapping panel. Five genes with potential time-specific effects showed species-specific temporal expression profiles during the juvenile stages of stem growth in five representative Populus species. Our observations revealed the importance of considering temporal genetic basis of complex traits, which will facilitate the molecular design of tree ideotypes.

DOI: 10.1111/pbi.13002
PubMed: 30133117
PubMed Central: PMC6381792


Affiliations:


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Le document en format XML

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</placeName>
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<name sortKey="Lu, Wenjie" sort="Lu, Wenjie" uniqKey="Lu W" first="Wenjie" last="Lu">Wenjie Lu</name>
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<name sortKey="Tian, Jiaxing" sort="Tian, Jiaxing" uniqKey="Tian J" first="Jiaxing" last="Tian">Jiaxing Tian</name>
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<name sortKey="Gong, Chenrui" sort="Gong, Chenrui" uniqKey="Gong C" first="Chenrui" last="Gong">Chenrui Gong</name>
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</placeName>
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<name sortKey="Chen, Jinhui" sort="Chen, Jinhui" uniqKey="Chen J" first="Jinhui" last="Chen">Jinhui Chen</name>
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<name sortKey="Li, Bailian" sort="Li, Bailian" uniqKey="Li B" first="Bailian" last="Li">Bailian Li</name>
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</placeName>
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<nlm:affiliation>Department of Forestry, North Carolina State University, Raleigh, NC, USA.</nlm:affiliation>
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<name sortKey="Zhang, Deqiang" sort="Zhang, Deqiang" uniqKey="Zhang D" first="Deqiang" last="Zhang">Deqiang Zhang</name>
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<title level="j">Plant biotechnology journal</title>
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<term>Gene Expression Regulation, Developmental (genetics)</term>
<term>Gene Expression Regulation, Plant (genetics)</term>
<term>Genes, Plant (genetics)</term>
<term>Genetic Linkage (genetics)</term>
<term>Genetic Pleiotropy (genetics)</term>
<term>Plant Stems (genetics)</term>
<term>Populus (genetics)</term>
<term>Populus (growth & development)</term>
<term>Quantitative Trait Loci (genetics)</term>
<term>Time Factors (MeSH)</term>
<term>Trees (genetics)</term>
<term>Trees (growth & development)</term>
</keywords>
<keywords scheme="KwdFr" xml:lang="fr">
<term>Arbres (croissance et développement)</term>
<term>Arbres (génétique)</term>
<term>Facteurs temps (MeSH)</term>
<term>Gènes de plante (génétique)</term>
<term>Liaison génétique (génétique)</term>
<term>Locus de caractère quantitatif (génétique)</term>
<term>Pléiotropie (génétique)</term>
<term>Populus (croissance et développement)</term>
<term>Populus (génétique)</term>
<term>Régulation de l'expression des gènes au cours du développement (génétique)</term>
<term>Régulation de l'expression des gènes végétaux (génétique)</term>
<term>Tiges de plante (génétique)</term>
</keywords>
<keywords scheme="MESH" qualifier="croissance et développement" xml:lang="fr">
<term>Arbres</term>
<term>Populus</term>
</keywords>
<keywords scheme="MESH" qualifier="genetics" xml:lang="en">
<term>Gene Expression Regulation, Developmental</term>
<term>Gene Expression Regulation, Plant</term>
<term>Genes, Plant</term>
<term>Genetic Linkage</term>
<term>Genetic Pleiotropy</term>
<term>Plant Stems</term>
<term>Populus</term>
<term>Quantitative Trait Loci</term>
<term>Trees</term>
</keywords>
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<term>Populus</term>
<term>Trees</term>
</keywords>
<keywords scheme="MESH" qualifier="génétique" xml:lang="fr">
<term>Arbres</term>
<term>Gènes de plante</term>
<term>Liaison génétique</term>
<term>Locus de caractère quantitatif</term>
<term>Pléiotropie</term>
<term>Populus</term>
<term>Régulation de l'expression des gènes au cours du développement</term>
<term>Régulation de l'expression des gènes végétaux</term>
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<div type="abstract" xml:lang="en">In perennial woody plants, the coordinated increase of stem height and diameter during juvenile growth improves competitiveness (i.e. access to light); however, the factors underlying variation in stem growth remain unknown in trees. Here, we used linkage-linkage disequilibrium (linkage-LD) mapping to decipher the genetic architecture underlying three growth traits during juvenile stem growth. We used two Populus populations: a linkage mapping population comprising a full-sib family of 1,200 progeny and an association mapping panel comprising 435 unrelated individuals from nearly the entire natural range of Populus tomentosa. We mapped 311 quantitative trait loci (QTL) for three growth traits at 12 timepoints to 42 regions in 17 linkage groups. Of these, 28 regions encompassing 233 QTL were annotated as 27 segmental homology regions (SHRs). Using SNPs identified by whole-genome re-sequencing of the 435-member association mapping panel, we identified significant SNPs (P ≤ 9.4 × 10
<sup>-7</sup>
) within 27 SHRs that affect stem growth at nine timepoints with diverse additive and dominance patterns, and these SNPs exhibited complex allelic epistasis over the juvenile growth period. Nineteen genes linked to potential causative alleles that have time-specific or pleiotropic effects, and mostly overlapped with significant signatures of selection within SHRs between climatic regions represented by the association mapping panel. Five genes with potential time-specific effects showed species-specific temporal expression profiles during the juvenile stages of stem growth in five representative Populus species. Our observations revealed the importance of considering temporal genetic basis of complex traits, which will facilitate the molecular design of tree ideotypes.</div>
</front>
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<PMID Version="1">30133117</PMID>
<DateCompleted>
<Year>2019</Year>
<Month>05</Month>
<Day>20</Day>
</DateCompleted>
<DateRevised>
<Year>2020</Year>
<Month>03</Month>
<Day>09</Day>
</DateRevised>
<Article PubModel="Print-Electronic">
<Journal>
<ISSN IssnType="Electronic">1467-7652</ISSN>
<JournalIssue CitedMedium="Internet">
<Volume>17</Volume>
<Issue>3</Issue>
<PubDate>
<Year>2019</Year>
<Month>03</Month>
</PubDate>
</JournalIssue>
<Title>Plant biotechnology journal</Title>
<ISOAbbreviation>Plant Biotechnol J</ISOAbbreviation>
</Journal>
<ArticleTitle>Time-specific and pleiotropic quantitative trait loci coordinately modulate stem growth in Populus.</ArticleTitle>
<Pagination>
<MedlinePgn>608-624</MedlinePgn>
</Pagination>
<ELocationID EIdType="doi" ValidYN="Y">10.1111/pbi.13002</ELocationID>
<Abstract>
<AbstractText>In perennial woody plants, the coordinated increase of stem height and diameter during juvenile growth improves competitiveness (i.e. access to light); however, the factors underlying variation in stem growth remain unknown in trees. Here, we used linkage-linkage disequilibrium (linkage-LD) mapping to decipher the genetic architecture underlying three growth traits during juvenile stem growth. We used two Populus populations: a linkage mapping population comprising a full-sib family of 1,200 progeny and an association mapping panel comprising 435 unrelated individuals from nearly the entire natural range of Populus tomentosa. We mapped 311 quantitative trait loci (QTL) for three growth traits at 12 timepoints to 42 regions in 17 linkage groups. Of these, 28 regions encompassing 233 QTL were annotated as 27 segmental homology regions (SHRs). Using SNPs identified by whole-genome re-sequencing of the 435-member association mapping panel, we identified significant SNPs (P ≤ 9.4 × 10
<sup>-7</sup>
) within 27 SHRs that affect stem growth at nine timepoints with diverse additive and dominance patterns, and these SNPs exhibited complex allelic epistasis over the juvenile growth period. Nineteen genes linked to potential causative alleles that have time-specific or pleiotropic effects, and mostly overlapped with significant signatures of selection within SHRs between climatic regions represented by the association mapping panel. Five genes with potential time-specific effects showed species-specific temporal expression profiles during the juvenile stages of stem growth in five representative Populus species. Our observations revealed the importance of considering temporal genetic basis of complex traits, which will facilitate the molecular design of tree ideotypes.</AbstractText>
<CopyrightInformation>© 2018 The Authors. Plant Biotechnology Journal published by Society for Experimental Biology and The Association of Applied Biologists and John Wiley & Sons Ltd.</CopyrightInformation>
</Abstract>
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<Author ValidYN="Y">
<LastName>Du</LastName>
<ForeName>Qingzhang</ForeName>
<Initials>Q</Initials>
<AffiliationInfo>
<Affiliation>Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, Beijing Forestry University, Beijing, China.</Affiliation>
</AffiliationInfo>
<AffiliationInfo>
<Affiliation>National Engineering Laboratory for Tree Breeding, College of Biological Sciences and Technology, Beijing Forestry University, Beijing, China.</Affiliation>
</AffiliationInfo>
<AffiliationInfo>
<Affiliation>Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants, Ministry of Education, College of Biological Sciences and Technology, Beijing Forestry University, Beijing, China.</Affiliation>
</AffiliationInfo>
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<LastName>Yang</LastName>
<ForeName>Xiaohui</ForeName>
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</AffiliationInfo>
<AffiliationInfo>
<Affiliation>National Engineering Laboratory for Tree Breeding, College of Biological Sciences and Technology, Beijing Forestry University, Beijing, China.</Affiliation>
</AffiliationInfo>
<AffiliationInfo>
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<LastName>Xie</LastName>
<ForeName>Jianbo</ForeName>
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</AffiliationInfo>
<AffiliationInfo>
<Affiliation>National Engineering Laboratory for Tree Breeding, College of Biological Sciences and Technology, Beijing Forestry University, Beijing, China.</Affiliation>
</AffiliationInfo>
<AffiliationInfo>
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<AffiliationInfo>
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<AffiliationInfo>
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<AffiliationInfo>
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<AffiliationInfo>
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<AffiliationInfo>
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