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StWRKY8 transcription factor regulates benzylisoquinoline alkaloid pathway in potato conferring resistance to late blight.

Identifieur interne : 000920 ( Main/Exploration ); précédent : 000919; suivant : 000921

StWRKY8 transcription factor regulates benzylisoquinoline alkaloid pathway in potato conferring resistance to late blight.

Auteurs : Kalenahalli N. Yogendra [Canada] ; Dhananjay Dhokane [Canada] ; Ajjamada C. Kushalappa [Canada] ; Felipe Sarmiento [Colombie] ; Ernesto Rodriguez [Colombie] ; Teresa Mosquera [Colombie]

Source :

RBID : pubmed:28167034

Descripteurs français

English descriptors

Abstract

The resistance to late blight is either qualitative or quantitative in nature. Quantitative resistance is durable, but challenging due to polygenic inheritance. In the present study, the diploid potato genotypes resistant and susceptible to late blight, were profiled for metabolites. Tissue specific metabolite analysis of benzylisoquinoline alkaloids (BIAs) in response to pathogen infection revealed increased accumulation of morphinone, codeine-6-glucuronide and morphine-3-glucuronides. These BIAs are antimicrobial compounds and possibly involved in cell wall reinforcement, especially through cross-linking cell wall pectins. Quantitative reverse transcription-PCR studies revealed higher expressions of TyDC, NCS, COR-2 and StWRKY8 transcription factor genes, in resistant genotypes than in susceptible genotype, following pathogen inoculation. A luciferase transient expression assay confirmed the binding of the StWRKY8 TF to promoters of downstream genes, elucidating a direct regulatory role on BIAs biosynthetic genes. Sequence analysis of StWRKY8 in potato genotypes revealed polymorphism in the WRKY DNA binding domain in the susceptible genotype, which is important for the regulatory function of this gene. A complementation assay of StWRKY8 in Arabidopsis wrky33 mutant background was associated with decreased fungal biomass. In conclusion, StWRKY8 regulates the biosynthesis of BIAs that are both antimicrobial and reinforce cell walls to contain the pathogen to initial infection.

DOI: 10.1016/j.plantsci.2016.12.014
PubMed: 28167034


Affiliations:


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Le document en format XML

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<term>Amino Acid Sequence (MeSH)</term>
<term>Arabidopsis (MeSH)</term>
<term>Arabidopsis Proteins (genetics)</term>
<term>Benzylisoquinolines (metabolism)</term>
<term>Cell Wall (metabolism)</term>
<term>Disease Resistance (genetics)</term>
<term>Gene Expression Regulation, Plant (MeSH)</term>
<term>Genes, Plant (MeSH)</term>
<term>Genotype (MeSH)</term>
<term>Pectins (metabolism)</term>
<term>Phytophthora infestans (growth & development)</term>
<term>Plant Diseases (microbiology)</term>
<term>Plant Proteins (genetics)</term>
<term>Plant Proteins (metabolism)</term>
<term>Polymerase Chain Reaction (MeSH)</term>
<term>Polymorphism, Genetic (MeSH)</term>
<term>Promoter Regions, Genetic (MeSH)</term>
<term>Solanum tuberosum (genetics)</term>
<term>Solanum tuberosum (metabolism)</term>
<term>Transcription Factors (genetics)</term>
<term>Transcription Factors (metabolism)</term>
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<term>Arabidopsis (MeSH)</term>
<term>Benzylisoquinoléines (métabolisme)</term>
<term>Facteurs de transcription (génétique)</term>
<term>Facteurs de transcription (métabolisme)</term>
<term>Gènes de plante (MeSH)</term>
<term>Génotype (MeSH)</term>
<term>Maladies des plantes (microbiologie)</term>
<term>Paroi cellulaire (métabolisme)</term>
<term>Pectine (métabolisme)</term>
<term>Phytophthora infestans (croissance et développement)</term>
<term>Polymorphisme génétique (MeSH)</term>
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<term>Protéines végétales (génétique)</term>
<term>Protéines végétales (métabolisme)</term>
<term>Réaction de polymérisation en chaîne (MeSH)</term>
<term>Régions promotrices (génétique) (MeSH)</term>
<term>Régulation de l'expression des gènes végétaux (MeSH)</term>
<term>Résistance à la maladie (génétique)</term>
<term>Solanum tuberosum (génétique)</term>
<term>Solanum tuberosum (métabolisme)</term>
<term>Séquence d'acides aminés (MeSH)</term>
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<term>Arabidopsis Proteins</term>
<term>Plant Proteins</term>
<term>Transcription Factors</term>
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<term>Benzylisoquinolines</term>
<term>Pectins</term>
<term>Plant Proteins</term>
<term>Transcription Factors</term>
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<keywords scheme="MESH" qualifier="croissance et développement" xml:lang="fr">
<term>Phytophthora infestans</term>
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<term>Disease Resistance</term>
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<term>Protéines d'Arabidopsis</term>
<term>Protéines végétales</term>
<term>Résistance à la maladie</term>
<term>Solanum tuberosum</term>
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<term>Cell Wall</term>
<term>Solanum tuberosum</term>
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<keywords scheme="MESH" qualifier="microbiologie" xml:lang="fr">
<term>Maladies des plantes</term>
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<term>Plant Diseases</term>
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<term>Benzylisoquinoléines</term>
<term>Facteurs de transcription</term>
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<term>Amino Acid Sequence</term>
<term>Arabidopsis</term>
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<term>Genotype</term>
<term>Polymerase Chain Reaction</term>
<term>Polymorphism, Genetic</term>
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<term>Gènes de plante</term>
<term>Génotype</term>
<term>Polymorphisme génétique</term>
<term>Réaction de polymérisation en chaîne</term>
<term>Régions promotrices (génétique)</term>
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<div type="abstract" xml:lang="en">The resistance to late blight is either qualitative or quantitative in nature. Quantitative resistance is durable, but challenging due to polygenic inheritance. In the present study, the diploid potato genotypes resistant and susceptible to late blight, were profiled for metabolites. Tissue specific metabolite analysis of benzylisoquinoline alkaloids (BIAs) in response to pathogen infection revealed increased accumulation of morphinone, codeine-6-glucuronide and morphine-3-glucuronides. These BIAs are antimicrobial compounds and possibly involved in cell wall reinforcement, especially through cross-linking cell wall pectins. Quantitative reverse transcription-PCR studies revealed higher expressions of TyDC, NCS, COR-2 and StWRKY8 transcription factor genes, in resistant genotypes than in susceptible genotype, following pathogen inoculation. A luciferase transient expression assay confirmed the binding of the StWRKY8 TF to promoters of downstream genes, elucidating a direct regulatory role on BIAs biosynthetic genes. Sequence analysis of StWRKY8 in potato genotypes revealed polymorphism in the WRKY DNA binding domain in the susceptible genotype, which is important for the regulatory function of this gene. A complementation assay of StWRKY8 in Arabidopsis wrky33 mutant background was associated with decreased fungal biomass. In conclusion, StWRKY8 regulates the biosynthesis of BIAs that are both antimicrobial and reinforce cell walls to contain the pathogen to initial infection.</div>
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<QualifierName UI="Q000382" MajorTopicYN="Y">microbiology</QualifierName>
</MeshHeading>
<MeshHeading>
<DescriptorName UI="D010940" MajorTopicYN="N">Plant Proteins</DescriptorName>
<QualifierName UI="Q000235" MajorTopicYN="N">genetics</QualifierName>
<QualifierName UI="Q000378" MajorTopicYN="N">metabolism</QualifierName>
</MeshHeading>
<MeshHeading>
<DescriptorName UI="D016133" MajorTopicYN="N">Polymerase Chain Reaction</DescriptorName>
</MeshHeading>
<MeshHeading>
<DescriptorName UI="D011110" MajorTopicYN="N">Polymorphism, Genetic</DescriptorName>
</MeshHeading>
<MeshHeading>
<DescriptorName UI="D011401" MajorTopicYN="N">Promoter Regions, Genetic</DescriptorName>
</MeshHeading>
<MeshHeading>
<DescriptorName UI="D011198" MajorTopicYN="N">Solanum tuberosum</DescriptorName>
<QualifierName UI="Q000235" MajorTopicYN="Y">genetics</QualifierName>
<QualifierName UI="Q000378" MajorTopicYN="N">metabolism</QualifierName>
</MeshHeading>
<MeshHeading>
<DescriptorName UI="D014157" MajorTopicYN="N">Transcription Factors</DescriptorName>
<QualifierName UI="Q000235" MajorTopicYN="Y">genetics</QualifierName>
<QualifierName UI="Q000378" MajorTopicYN="N">metabolism</QualifierName>
</MeshHeading>
</MeshHeadingList>
<KeywordList Owner="NOTNLM">
<Keyword MajorTopicYN="N">Benzylisoquinoline alkaloids</Keyword>
<Keyword MajorTopicYN="N">Phytophthora infestans</Keyword>
<Keyword MajorTopicYN="N">Quantitative resistance</Keyword>
<Keyword MajorTopicYN="N">Solanum tuberosum</Keyword>
<Keyword MajorTopicYN="N">Transcription factors</Keyword>
<Keyword MajorTopicYN="N">Transcriptional regulation</Keyword>
</KeywordList>
</MedlineCitation>
<PubmedData>
<History>
<PubMedPubDate PubStatus="received">
<Year>2016</Year>
<Month>07</Month>
<Day>12</Day>
</PubMedPubDate>
<PubMedPubDate PubStatus="accepted">
<Year>2016</Year>
<Month>12</Month>
<Day>30</Day>
</PubMedPubDate>
<PubMedPubDate PubStatus="entrez">
<Year>2017</Year>
<Month>2</Month>
<Day>8</Day>
<Hour>6</Hour>
<Minute>0</Minute>
</PubMedPubDate>
<PubMedPubDate PubStatus="pubmed">
<Year>2017</Year>
<Month>2</Month>
<Day>9</Day>
<Hour>6</Hour>
<Minute>0</Minute>
</PubMedPubDate>
<PubMedPubDate PubStatus="medline">
<Year>2017</Year>
<Month>4</Month>
<Day>18</Day>
<Hour>6</Hour>
<Minute>0</Minute>
</PubMedPubDate>
</History>
<PublicationStatus>ppublish</PublicationStatus>
<ArticleIdList>
<ArticleId IdType="pubmed">28167034</ArticleId>
<ArticleId IdType="pii">S0168-9452(16)30186-8</ArticleId>
<ArticleId IdType="doi">10.1016/j.plantsci.2016.12.014</ArticleId>
</ArticleIdList>
</PubmedData>
</pubmed>
<affiliations>
<list>
<country>
<li>Canada</li>
<li>Colombie</li>
</country>
<region>
<li>Québec</li>
</region>
<settlement>
<li>Montréal</li>
</settlement>
<orgName>
<li>Université McGill</li>
</orgName>
</list>
<tree>
<country name="Canada">
<region name="Québec">
<name sortKey="Yogendra, Kalenahalli N" sort="Yogendra, Kalenahalli N" uniqKey="Yogendra K" first="Kalenahalli N" last="Yogendra">Kalenahalli N. Yogendra</name>
</region>
<name sortKey="Dhokane, Dhananjay" sort="Dhokane, Dhananjay" uniqKey="Dhokane D" first="Dhananjay" last="Dhokane">Dhananjay Dhokane</name>
<name sortKey="Kushalappa, Ajjamada C" sort="Kushalappa, Ajjamada C" uniqKey="Kushalappa A" first="Ajjamada C" last="Kushalappa">Ajjamada C. Kushalappa</name>
</country>
<country name="Colombie">
<noRegion>
<name sortKey="Sarmiento, Felipe" sort="Sarmiento, Felipe" uniqKey="Sarmiento F" first="Felipe" last="Sarmiento">Felipe Sarmiento</name>
</noRegion>
<name sortKey="Mosquera, Teresa" sort="Mosquera, Teresa" uniqKey="Mosquera T" first="Teresa" last="Mosquera">Teresa Mosquera</name>
<name sortKey="Rodriguez, Ernesto" sort="Rodriguez, Ernesto" uniqKey="Rodriguez E" first="Ernesto" last="Rodriguez">Ernesto Rodriguez</name>
</country>
</tree>
</affiliations>
</record>

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