PoplarV1, Main, Exploration, bibRecord, 003100

Subgroup 4 R2R3-MYBs in conifer trees: gene family expansion and contribution to the isoprenoid- and flavonoid-oriented responses.

Identifieur interne : 003100 ( Main/Exploration ); précédent : 003099; suivant : 003101

Subgroup 4 R2R3-MYBs in conifer trees: gene family expansion and contribution to the isoprenoid- and flavonoid-oriented responses.

Auteurs : Frank Bedon [Canada] ; Claude Bomal ; Sébastien Caron ; Caroline Levasseur ; Brian Boyle ; Shawn D. Mansfield ; Axel Schmidt ; Jonathan Gershenzon ; Jacqueline Grima-Pettenati ; Armand Séguin ; John Mackay

Source :

Journal of experimental botany [ 1460-2431 ] ; 2010.

RBID : pubmed:20732878

Descripteurs français

English descriptors

KwdEn :
- Amino Acid Sequence (MeSH), Arabidopsis (genetics), Arabidopsis (metabolism), Base Sequence (MeSH), Cyclopentanes (pharmacology), Flavonoids (metabolism), Genes, myb (MeSH), Molecular Sequence Data (MeSH), Multigene Family (MeSH), Oxylipins (pharmacology), Picea (genetics), Picea (metabolism), Pinus taeda (genetics), Pinus taeda (metabolism), Plant Proteins (classification), Plant Proteins (genetics), Plant Proteins (metabolism), Populus (genetics), Populus (metabolism), Terpenes (metabolism), Tracheophyta (genetics), Tracheophyta (metabolism), Transcription Factors (classification), Transcription Factors (genetics), Transcription Factors (metabolism), Trees (genetics), Trees (metabolism).
MESH :
- chemical , classification : Plant Proteins, Transcription Factors.
- chemical , genetics : Plant Proteins, Transcription Factors.
- chemical , metabolism : Flavonoids, Plant Proteins, Terpenes, Transcription Factors.
- chemical , pharmacology : Cyclopentanes, Oxylipins.
- genetics : Arabidopsis, Picea, Pinus taeda, Populus, Tracheophyta, Trees.
- metabolism : Arabidopsis, Picea, Pinus taeda, Populus, Tracheophyta, Trees.
- Amino Acid Sequence, Base Sequence, Genes, myb, Molecular Sequence Data, Multigene Family.

Abstract

Transcription factors play a fundamental role in plants by orchestrating temporal and spatial gene expression in response to environmental stimuli. Several R2R3-MYB genes of the Arabidopsis subgroup 4 (Sg4) share a C-terminal EAR motif signature recently linked to stress response in angiosperm plants. It is reported here that nearly all Sg4 MYB genes in the conifer trees Picea glauca (white spruce) and Pinus taeda (loblolly pine) form a monophyletic clade (Sg4C) that expanded following the split of gymnosperm and angiosperm lineages. Deeper sequencing in P. glauca identified 10 distinct Sg4C sequences, indicating over-representation of Sg4 sequences compared with angiosperms such as Arabidopsis, Oryza, Vitis, and Populus. The Sg4C MYBs share the EAR motif core. Many of them had stress-responsive transcript profiles after wounding, jasmonic acid (JA) treatment, or exposure to cold in P. glauca and P. taeda, with MYB14 transcripts accumulating most strongly and rapidly. Functional characterization was initiated by expressing the P. taeda MYB14 (PtMYB14) gene in transgenic P. glauca plantlets with a tissue-preferential promoter (cinnamyl alcohol dehydrogenase) and a ubiquitous gene promoter (ubiquitin). Histological, metabolite, and transcript (microarray and targeted quantitative real-time PCR) analyses of PtMYB14 transgenics, coupled with mechanical wounding and JA application experiments on wild-type plantlets, allowed identification of PtMYB14 as a putative regulator of an isoprenoid-oriented response that leads to the accumulation of sesquiterpene in conifers. Data further suggested that PtMYB14 may contribute to a broad defence response implicating flavonoids. This study also addresses the potential involvement of closely related Sg4C sequences in stress responses and plant evolution.

DOI: 10.1093/jxb/erq196
PubMed: 20732878
PubMed Central: PMC2935864

Affiliations:

Links toward previous steps (curation, corpus...)

to stream Main, to step Corpus: 003089
to stream Main, to step Curation: 003089

Le document en format XML

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<term>Arabidopsis (genetics)</term>
<term>Arabidopsis (metabolism)</term>
<term>Base Sequence (MeSH)</term>
<term>Cyclopentanes (pharmacology)</term>
<term>Flavonoids (metabolism)</term>
<term>Genes, myb (MeSH)</term>
<term>Molecular Sequence Data (MeSH)</term>
<term>Multigene Family (MeSH)</term>
<term>Oxylipins (pharmacology)</term>
<term>Picea (genetics)</term>
<term>Picea (metabolism)</term>
<term>Pinus taeda (genetics)</term>
<term>Pinus taeda (metabolism)</term>
<term>Plant Proteins (classification)</term>
<term>Plant Proteins (genetics)</term>
<term>Plant Proteins (metabolism)</term>
<term>Populus (genetics)</term>
<term>Populus (metabolism)</term>
<term>Terpenes (metabolism)</term>
<term>Tracheophyta (genetics)</term>
<term>Tracheophyta (metabolism)</term>
<term>Transcription Factors (classification)</term>
<term>Transcription Factors (genetics)</term>
<term>Transcription Factors (metabolism)</term>
<term>Trees (genetics)</term>
<term>Trees (metabolism)</term>
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<keywords scheme="KwdFr" xml:lang="fr"><term>Arabidopsis (génétique)</term>
<term>Arabidopsis (métabolisme)</term>
<term>Arbres (génétique)</term>
<term>Arbres (métabolisme)</term>
<term>Cyclopentanes (pharmacologie)</term>
<term>Données de séquences moléculaires (MeSH)</term>
<term>Facteurs de transcription (classification)</term>
<term>Facteurs de transcription (génétique)</term>
<term>Facteurs de transcription (métabolisme)</term>
<term>Famille multigénique (MeSH)</term>
<term>Flavonoïdes (métabolisme)</term>
<term>Gènes myb (MeSH)</term>
<term>Oxylipines (pharmacologie)</term>
<term>Picea (génétique)</term>
<term>Picea (métabolisme)</term>
<term>Pinus taeda (génétique)</term>
<term>Pinus taeda (métabolisme)</term>
<term>Populus (génétique)</term>
<term>Populus (métabolisme)</term>
<term>Protéines végétales (classification)</term>
<term>Protéines végétales (génétique)</term>
<term>Protéines végétales (métabolisme)</term>
<term>Séquence d'acides aminés (MeSH)</term>
<term>Séquence nucléotidique (MeSH)</term>
<term>Terpènes (métabolisme)</term>
<term>Tracheobionta (génétique)</term>
<term>Tracheobionta (métabolisme)</term>
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<term>Transcription Factors</term>
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<keywords scheme="MESH" type="chemical" qualifier="genetics" xml:lang="en"><term>Plant Proteins</term>
<term>Transcription Factors</term>
</keywords>
<keywords scheme="MESH" type="chemical" qualifier="metabolism" xml:lang="en"><term>Flavonoids</term>
<term>Plant Proteins</term>
<term>Terpenes</term>
<term>Transcription Factors</term>
</keywords>
<keywords scheme="MESH" type="chemical" qualifier="pharmacology" xml:lang="en"><term>Cyclopentanes</term>
<term>Oxylipins</term>
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<keywords scheme="MESH" qualifier="classification" xml:lang="fr"><term>Facteurs de transcription</term>
<term>Protéines végétales</term>
</keywords>
<keywords scheme="MESH" qualifier="genetics" xml:lang="en"><term>Arabidopsis</term>
<term>Picea</term>
<term>Pinus taeda</term>
<term>Populus</term>
<term>Tracheophyta</term>
<term>Trees</term>
</keywords>
<keywords scheme="MESH" qualifier="génétique" xml:lang="fr"><term>Arabidopsis</term>
<term>Arbres</term>
<term>Facteurs de transcription</term>
<term>Picea</term>
<term>Pinus taeda</term>
<term>Populus</term>
<term>Protéines végétales</term>
<term>Tracheobionta</term>
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<keywords scheme="MESH" qualifier="metabolism" xml:lang="en"><term>Arabidopsis</term>
<term>Picea</term>
<term>Pinus taeda</term>
<term>Populus</term>
<term>Tracheophyta</term>
<term>Trees</term>
</keywords>
<keywords scheme="MESH" qualifier="métabolisme" xml:lang="fr"><term>Arabidopsis</term>
<term>Arbres</term>
<term>Facteurs de transcription</term>
<term>Flavonoïdes</term>
<term>Picea</term>
<term>Pinus taeda</term>
<term>Populus</term>
<term>Protéines végétales</term>
<term>Terpènes</term>
<term>Tracheobionta</term>
</keywords>
<keywords scheme="MESH" qualifier="pharmacologie" xml:lang="fr"><term>Cyclopentanes</term>
<term>Oxylipines</term>
</keywords>
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<term>Base Sequence</term>
<term>Genes, myb</term>
<term>Molecular Sequence Data</term>
<term>Multigene Family</term>
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<term>Famille multigénique</term>
<term>Gènes myb</term>
<term>Séquence d'acides aminés</term>
<term>Séquence nucléotidique</term>
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<front><div type="abstract" xml:lang="en">Transcription factors play a fundamental role in plants by orchestrating temporal and spatial gene expression in response to environmental stimuli. Several R2R3-MYB genes of the Arabidopsis subgroup 4 (Sg4) share a C-terminal EAR motif signature recently linked to stress response in angiosperm plants. It is reported here that nearly all Sg4 MYB genes in the conifer trees Picea glauca (white spruce) and Pinus taeda (loblolly pine) form a monophyletic clade (Sg4C) that expanded following the split of gymnosperm and angiosperm lineages. Deeper sequencing in P. glauca identified 10 distinct Sg4C sequences, indicating over-representation of Sg4 sequences compared with angiosperms such as Arabidopsis, Oryza, Vitis, and Populus. The Sg4C MYBs share the EAR motif core. Many of them had stress-responsive transcript profiles after wounding, jasmonic acid (JA) treatment, or exposure to cold in P. glauca and P. taeda, with MYB14 transcripts accumulating most strongly and rapidly. Functional characterization was initiated by expressing the P. taeda MYB14 (PtMYB14) gene in transgenic P. glauca plantlets with a tissue-preferential promoter (cinnamyl alcohol dehydrogenase) and a ubiquitous gene promoter (ubiquitin). Histological, metabolite, and transcript (microarray and targeted quantitative real-time PCR) analyses of PtMYB14 transgenics, coupled with mechanical wounding and JA application experiments on wild-type plantlets, allowed identification of PtMYB14 as a putative regulator of an isoprenoid-oriented response that leads to the accumulation of sesquiterpene in conifers. Data further suggested that PtMYB14 may contribute to a broad defence response implicating flavonoids. This study also addresses the potential involvement of closely related Sg4C sequences in stress responses and plant evolution.</div>
</front>
</TEI>
<pubmed><MedlineCitation Status="MEDLINE" Owner="NLM"><PMID Version="1">20732878</PMID>
<DateCompleted><Year>2010</Year>
<Month>10</Month>
<Day>05</Day>
</DateCompleted>
<DateRevised><Year>2019</Year>
<Month>12</Month>
<Day>10</Day>
</DateRevised>
<Article PubModel="Print-Electronic"><Journal><ISSN IssnType="Electronic">1460-2431</ISSN>
<JournalIssue CitedMedium="Internet"><Volume>61</Volume>
<Issue>14</Issue>
<PubDate><Year>2010</Year>
<Month>Sep</Month>
</PubDate>
</JournalIssue>
<Title>Journal of experimental botany</Title>
<ISOAbbreviation>J Exp Bot</ISOAbbreviation>
</Journal>
<ArticleTitle>Subgroup 4 R2R3-MYBs in conifer trees: gene family expansion and contribution to the isoprenoid- and flavonoid-oriented responses.</ArticleTitle>
<Pagination><MedlinePgn>3847-64</MedlinePgn>
</Pagination>
<ELocationID EIdType="doi" ValidYN="Y">10.1093/jxb/erq196</ELocationID>
<Abstract><AbstractText>Transcription factors play a fundamental role in plants by orchestrating temporal and spatial gene expression in response to environmental stimuli. Several R2R3-MYB genes of the Arabidopsis subgroup 4 (Sg4) share a C-terminal EAR motif signature recently linked to stress response in angiosperm plants. It is reported here that nearly all Sg4 MYB genes in the conifer trees Picea glauca (white spruce) and Pinus taeda (loblolly pine) form a monophyletic clade (Sg4C) that expanded following the split of gymnosperm and angiosperm lineages. Deeper sequencing in P. glauca identified 10 distinct Sg4C sequences, indicating over-representation of Sg4 sequences compared with angiosperms such as Arabidopsis, Oryza, Vitis, and Populus. The Sg4C MYBs share the EAR motif core. Many of them had stress-responsive transcript profiles after wounding, jasmonic acid (JA) treatment, or exposure to cold in P. glauca and P. taeda, with MYB14 transcripts accumulating most strongly and rapidly. Functional characterization was initiated by expressing the P. taeda MYB14 (PtMYB14) gene in transgenic P. glauca plantlets with a tissue-preferential promoter (cinnamyl alcohol dehydrogenase) and a ubiquitous gene promoter (ubiquitin). Histological, metabolite, and transcript (microarray and targeted quantitative real-time PCR) analyses of PtMYB14 transgenics, coupled with mechanical wounding and JA application experiments on wild-type plantlets, allowed identification of PtMYB14 as a putative regulator of an isoprenoid-oriented response that leads to the accumulation of sesquiterpene in conifers. Data further suggested that PtMYB14 may contribute to a broad defence response implicating flavonoids. This study also addresses the potential involvement of closely related Sg4C sequences in stress responses and plant evolution.</AbstractText>
</Abstract>
<AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Bedon</LastName>
<ForeName>Frank</ForeName>
<Initials>F</Initials>
<AffiliationInfo><Affiliation>Centre d'Etude de la Forêt, Université Laval, Québec (QC), G1V A06, Canada.</Affiliation>
</AffiliationInfo>
</Author>
<Author ValidYN="Y"><LastName>Bomal</LastName>
<ForeName>Claude</ForeName>
<Initials>C</Initials>
</Author>
<Author ValidYN="Y"><LastName>Caron</LastName>
<ForeName>Sébastien</ForeName>
<Initials>S</Initials>
</Author>
<Author ValidYN="Y"><LastName>Levasseur</LastName>
<ForeName>Caroline</ForeName>
<Initials>C</Initials>
</Author>
<Author ValidYN="Y"><LastName>Boyle</LastName>
<ForeName>Brian</ForeName>
<Initials>B</Initials>
</Author>
<Author ValidYN="Y"><LastName>Mansfield</LastName>
<ForeName>Shawn D</ForeName>
<Initials>SD</Initials>
</Author>
<Author ValidYN="Y"><LastName>Schmidt</LastName>
<ForeName>Axel</ForeName>
<Initials>A</Initials>
</Author>
<Author ValidYN="Y"><LastName>Gershenzon</LastName>
<ForeName>Jonathan</ForeName>
<Initials>J</Initials>
</Author>
<Author ValidYN="Y"><LastName>Grima-Pettenati</LastName>
<ForeName>Jacqueline</ForeName>
<Initials>J</Initials>
</Author>
<Author ValidYN="Y"><LastName>Séguin</LastName>
<ForeName>Armand</ForeName>
<Initials>A</Initials>
</Author>
<Author ValidYN="Y"><LastName>MacKay</LastName>
<ForeName>John</ForeName>
<Initials>J</Initials>
</Author>
</AuthorList>
<Language>eng</Language>
<PublicationTypeList><PublicationType UI="D016428">Journal Article</PublicationType>
<PublicationType UI="D013485">Research Support, Non-U.S. Gov't</PublicationType>
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<ArticleDate DateType="Electronic"><Year>2010</Year>
<Month>08</Month>
<Day>23</Day>
</ArticleDate>
</Article>
<MedlineJournalInfo><Country>England</Country>
<MedlineTA>J Exp Bot</MedlineTA>
<NlmUniqueID>9882906</NlmUniqueID>
<ISSNLinking>0022-0957</ISSNLinking>
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<ChemicalList><Chemical><RegistryNumber>0</RegistryNumber>
<NameOfSubstance UI="D003517">Cyclopentanes</NameOfSubstance>
</Chemical>
<Chemical><RegistryNumber>0</RegistryNumber>
<NameOfSubstance UI="D005419">Flavonoids</NameOfSubstance>
</Chemical>
<Chemical><RegistryNumber>0</RegistryNumber>
<NameOfSubstance UI="D054883">Oxylipins</NameOfSubstance>
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<NameOfSubstance UI="D010940">Plant Proteins</NameOfSubstance>
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<Chemical><RegistryNumber>0</RegistryNumber>
<NameOfSubstance UI="D013729">Terpenes</NameOfSubstance>
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<NameOfSubstance UI="D014157">Transcription Factors</NameOfSubstance>
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<Chemical><RegistryNumber>6RI5N05OWW</RegistryNumber>
<NameOfSubstance UI="C011006">jasmonic acid</NameOfSubstance>
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</ChemicalList>
<CitationSubset>IM</CitationSubset>
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</MeshHeading>
<MeshHeading><DescriptorName UI="D017360" MajorTopicYN="N">Arabidopsis</DescriptorName>
<QualifierName UI="Q000235" MajorTopicYN="N">genetics</QualifierName>
<QualifierName UI="Q000378" MajorTopicYN="N">metabolism</QualifierName>
</MeshHeading>
<MeshHeading><DescriptorName UI="D001483" MajorTopicYN="N">Base Sequence</DescriptorName>
</MeshHeading>
<MeshHeading><DescriptorName UI="D003517" MajorTopicYN="N">Cyclopentanes</DescriptorName>
<QualifierName UI="Q000494" MajorTopicYN="N">pharmacology</QualifierName>
</MeshHeading>
<MeshHeading><DescriptorName UI="D005419" MajorTopicYN="N">Flavonoids</DescriptorName>
<QualifierName UI="Q000378" MajorTopicYN="Y">metabolism</QualifierName>
</MeshHeading>
<MeshHeading><DescriptorName UI="D020570" MajorTopicYN="N">Genes, myb</DescriptorName>
</MeshHeading>
<MeshHeading><DescriptorName UI="D008969" MajorTopicYN="N">Molecular Sequence Data</DescriptorName>
</MeshHeading>
<MeshHeading><DescriptorName UI="D005810" MajorTopicYN="N">Multigene Family</DescriptorName>
</MeshHeading>
<MeshHeading><DescriptorName UI="D054883" MajorTopicYN="N">Oxylipins</DescriptorName>
<QualifierName UI="Q000494" MajorTopicYN="N">pharmacology</QualifierName>
</MeshHeading>
<MeshHeading><DescriptorName UI="D028222" MajorTopicYN="N">Picea</DescriptorName>
<QualifierName UI="Q000235" MajorTopicYN="N">genetics</QualifierName>
<QualifierName UI="Q000378" MajorTopicYN="N">metabolism</QualifierName>
</MeshHeading>
<MeshHeading><DescriptorName UI="D041603" MajorTopicYN="N">Pinus taeda</DescriptorName>
<QualifierName UI="Q000235" MajorTopicYN="N">genetics</QualifierName>
<QualifierName UI="Q000378" MajorTopicYN="N">metabolism</QualifierName>
</MeshHeading>
<MeshHeading><DescriptorName UI="D010940" MajorTopicYN="N">Plant Proteins</DescriptorName>
<QualifierName UI="Q000145" MajorTopicYN="N">classification</QualifierName>
<QualifierName UI="Q000235" MajorTopicYN="N">genetics</QualifierName>
<QualifierName UI="Q000378" MajorTopicYN="Y">metabolism</QualifierName>
</MeshHeading>
<MeshHeading><DescriptorName UI="D032107" MajorTopicYN="N">Populus</DescriptorName>
<QualifierName UI="Q000235" MajorTopicYN="N">genetics</QualifierName>
<QualifierName UI="Q000378" MajorTopicYN="N">metabolism</QualifierName>
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Subgroup 4 R2R3-MYBs in conifer trees: gene family expansion and contribution to the isoprenoid- and flavonoid-oriented responses.

Subgroup 4 R2R3-MYBs in conifer trees: gene family expansion and contribution to the isoprenoid- and flavonoid-oriented responses.

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