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Natural allelic variations provide insights into host adaptation of Phytophthora avirulence effector PsAvr3c.

Identifieur interne : 000447 ( Main/Exploration ); précédent : 000446; suivant : 000448

Natural allelic variations provide insights into host adaptation of Phytophthora avirulence effector PsAvr3c.

Auteurs : Jie Huang [République populaire de Chine] ; Ling Chen [République populaire de Chine] ; Xinyu Lu [République populaire de Chine] ; Qian Peng [République populaire de Chine] ; Ying Zhang [République populaire de Chine] ; Jin Yang [République populaire de Chine] ; Bai Yu Zhang [République populaire de Chine] ; Bo Yang [République populaire de Chine] ; Justin Reed Waletich [République populaire de Chine] ; Weixiao Yin [République populaire de Chine] ; Xiaobo Zheng [République populaire de Chine] ; Yuanchao Wang [République populaire de Chine] ; Suomeng Dong [République populaire de Chine]

Source :

RBID : pubmed:30169906

Descripteurs français

English descriptors

Abstract

Filamentous pathogens, such as fungi and oomycetes, secrete avirulence (AVR) effectors that trigger plant immune responses and provide striking examples of host adaptations. Avr effector genes display different types of allelic variations, including deletions, epigenetic silencing and sequence polymorphisms, to avoid detection. However, how effector sequence polymorphisms enable pathogens to dodge host immune surveillance remains largely unknown. PsAvr3c is a Phytophthora AVR gene that is recognized by soybean carrying Rps3c. PsAvr3c natural alleles display a rich diversity of single nucleotide polymorphisms in field isolates. We combined both site-directed mutagenesis and population sequence surveys to identify a serine substitution of glycine at position 174 in PsAvr3c that resulted in evasion of Rps3c-mediated soybean immunity. The S174G substitution did not affect the nuclear localization of PsAvr3c in planta, which is required to activate Rps3c, but it significantly impaired the binding affinity of PsAvr3c with a previously identified spliceosome-associated protein GmSKRPs. Silencing GmSKRPs specifically impaired PsAvr3c-triggered cell death in Rps3c soybean. This study uncovered a plant Phytophthora pathogen that adapted to a resistant plant through a key amino acid mutation and subsequently reduced the binding affinity with a plant immune regulator to evade host resistance.

DOI: 10.1111/nph.15414
PubMed: 30169906


Affiliations:


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Le document en format XML

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<name sortKey="Yang, Jin" sort="Yang, Jin" uniqKey="Yang J" first="Jin" last="Yang">Jin Yang</name>
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<name sortKey="Zhang, Bai Yu" sort="Zhang, Bai Yu" uniqKey="Zhang B" first="Bai Yu" last="Zhang">Bai Yu Zhang</name>
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<name sortKey="Yang, Bo" sort="Yang, Bo" uniqKey="Yang B" first="Bo" last="Yang">Bo Yang</name>
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<name sortKey="Waletich, Justin Reed" sort="Waletich, Justin Reed" uniqKey="Waletich J" first="Justin Reed" last="Waletich">Justin Reed Waletich</name>
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<name sortKey="Yin, Weixiao" sort="Yin, Weixiao" uniqKey="Yin W" first="Weixiao" last="Yin">Weixiao Yin</name>
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<name sortKey="Zheng, Xiaobo" sort="Zheng, Xiaobo" uniqKey="Zheng X" first="Xiaobo" last="Zheng">Xiaobo Zheng</name>
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<name sortKey="Wang, Yuanchao" sort="Wang, Yuanchao" uniqKey="Wang Y" first="Yuanchao" last="Wang">Yuanchao Wang</name>
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<title level="j">The New phytologist</title>
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<keywords scheme="KwdEn" xml:lang="en">
<term>Acclimatization (MeSH)</term>
<term>Genotype (MeSH)</term>
<term>Phytophthora (genetics)</term>
<term>Phytophthora (physiology)</term>
<term>Plant Diseases (genetics)</term>
<term>Plant Diseases (immunology)</term>
<term>Plant Diseases (microbiology)</term>
<term>Plant Immunity (MeSH)</term>
<term>Polymorphism, Genetic (genetics)</term>
<term>Soybeans (genetics)</term>
<term>Soybeans (physiology)</term>
<term>Virulence (MeSH)</term>
<term>Virulence Factors (metabolism)</term>
</keywords>
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<term>Acclimatation (MeSH)</term>
<term>Facteurs de virulence (métabolisme)</term>
<term>Génotype (MeSH)</term>
<term>Immunité des plantes (MeSH)</term>
<term>Maladies des plantes (génétique)</term>
<term>Maladies des plantes (immunologie)</term>
<term>Maladies des plantes (microbiologie)</term>
<term>Phytophthora (génétique)</term>
<term>Phytophthora (physiologie)</term>
<term>Polymorphisme génétique (génétique)</term>
<term>Soja (génétique)</term>
<term>Soja (physiologie)</term>
<term>Virulence (MeSH)</term>
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<keywords scheme="MESH" type="chemical" qualifier="metabolism" xml:lang="en">
<term>Virulence Factors</term>
</keywords>
<keywords scheme="MESH" qualifier="genetics" xml:lang="en">
<term>Phytophthora</term>
<term>Plant Diseases</term>
<term>Polymorphism, Genetic</term>
<term>Soybeans</term>
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<keywords scheme="MESH" qualifier="génétique" xml:lang="fr">
<term>Maladies des plantes</term>
<term>Phytophthora</term>
<term>Polymorphisme génétique</term>
<term>Soja</term>
</keywords>
<keywords scheme="MESH" qualifier="immunologie" xml:lang="fr">
<term>Maladies des plantes</term>
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<keywords scheme="MESH" qualifier="immunology" xml:lang="en">
<term>Plant Diseases</term>
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<keywords scheme="MESH" qualifier="microbiologie" xml:lang="fr">
<term>Maladies des plantes</term>
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<keywords scheme="MESH" qualifier="microbiology" xml:lang="en">
<term>Plant Diseases</term>
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<term>Facteurs de virulence</term>
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<keywords scheme="MESH" qualifier="physiologie" xml:lang="fr">
<term>Phytophthora</term>
<term>Soja</term>
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<term>Phytophthora</term>
<term>Soybeans</term>
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<term>Acclimatization</term>
<term>Genotype</term>
<term>Plant Immunity</term>
<term>Virulence</term>
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<keywords scheme="MESH" xml:lang="fr">
<term>Acclimatation</term>
<term>Génotype</term>
<term>Immunité des plantes</term>
<term>Virulence</term>
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<div type="abstract" xml:lang="en">Filamentous pathogens, such as fungi and oomycetes, secrete avirulence (AVR) effectors that trigger plant immune responses and provide striking examples of host adaptations. Avr effector genes display different types of allelic variations, including deletions, epigenetic silencing and sequence polymorphisms, to avoid detection. However, how effector sequence polymorphisms enable pathogens to dodge host immune surveillance remains largely unknown. PsAvr3c is a Phytophthora AVR gene that is recognized by soybean carrying Rps3c. PsAvr3c natural alleles display a rich diversity of single nucleotide polymorphisms in field isolates. We combined both site-directed mutagenesis and population sequence surveys to identify a serine substitution of glycine at position 174 in PsAvr3c that resulted in evasion of Rps3c-mediated soybean immunity. The S174G substitution did not affect the nuclear localization of PsAvr3c in planta, which is required to activate Rps3c, but it significantly impaired the binding affinity of PsAvr3c with a previously identified spliceosome-associated protein GmSKRPs. Silencing GmSKRPs specifically impaired PsAvr3c-triggered cell death in Rps3c soybean. This study uncovered a plant Phytophthora pathogen that adapted to a resistant plant through a key amino acid mutation and subsequently reduced the binding affinity with a plant immune regulator to evade host resistance.</div>
</front>
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<PMID Version="1">30169906</PMID>
<DateCompleted>
<Year>2020</Year>
<Month>02</Month>
<Day>18</Day>
</DateCompleted>
<DateRevised>
<Year>2020</Year>
<Month>09</Month>
<Day>30</Day>
</DateRevised>
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<Journal>
<ISSN IssnType="Electronic">1469-8137</ISSN>
<JournalIssue CitedMedium="Internet">
<Volume>221</Volume>
<Issue>2</Issue>
<PubDate>
<Year>2019</Year>
<Month>01</Month>
</PubDate>
</JournalIssue>
<Title>The New phytologist</Title>
<ISOAbbreviation>New Phytol</ISOAbbreviation>
</Journal>
<ArticleTitle>Natural allelic variations provide insights into host adaptation of Phytophthora avirulence effector PsAvr3c.</ArticleTitle>
<Pagination>
<MedlinePgn>1010-1022</MedlinePgn>
</Pagination>
<ELocationID EIdType="doi" ValidYN="Y">10.1111/nph.15414</ELocationID>
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<AbstractText>Filamentous pathogens, such as fungi and oomycetes, secrete avirulence (AVR) effectors that trigger plant immune responses and provide striking examples of host adaptations. Avr effector genes display different types of allelic variations, including deletions, epigenetic silencing and sequence polymorphisms, to avoid detection. However, how effector sequence polymorphisms enable pathogens to dodge host immune surveillance remains largely unknown. PsAvr3c is a Phytophthora AVR gene that is recognized by soybean carrying Rps3c. PsAvr3c natural alleles display a rich diversity of single nucleotide polymorphisms in field isolates. We combined both site-directed mutagenesis and population sequence surveys to identify a serine substitution of glycine at position 174 in PsAvr3c that resulted in evasion of Rps3c-mediated soybean immunity. The S174G substitution did not affect the nuclear localization of PsAvr3c in planta, which is required to activate Rps3c, but it significantly impaired the binding affinity of PsAvr3c with a previously identified spliceosome-associated protein GmSKRPs. Silencing GmSKRPs specifically impaired PsAvr3c-triggered cell death in Rps3c soybean. This study uncovered a plant Phytophthora pathogen that adapted to a resistant plant through a key amino acid mutation and subsequently reduced the binding affinity with a plant immune regulator to evade host resistance.</AbstractText>
<CopyrightInformation>© 2018 The Authors. New Phytologist © 2018 New Phytologist Trust.</CopyrightInformation>
</Abstract>
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<Author ValidYN="Y">
<LastName>Huang</LastName>
<ForeName>Jie</ForeName>
<Initials>J</Initials>
<Identifier Source="ORCID">0000-0002-6657-8740</Identifier>
<AffiliationInfo>
<Affiliation>Department of Plant Pathology, Nanjing Agricultural University, Nanjing, 210095, China.</Affiliation>
</AffiliationInfo>
<AffiliationInfo>
<Affiliation>Key Laboratory of Integrated Management of Crop Diseases and Pests, Ministry of Education, Nanjing, 210095, China.</Affiliation>
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<LastName>Chen</LastName>
<ForeName>Ling</ForeName>
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<AffiliationInfo>
<Affiliation>Department of Plant Pathology, Nanjing Agricultural University, Nanjing, 210095, China.</Affiliation>
</AffiliationInfo>
</Author>
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<LastName>Lu</LastName>
<ForeName>Xinyu</ForeName>
<Initials>X</Initials>
<AffiliationInfo>
<Affiliation>Department of Plant Pathology, Nanjing Agricultural University, Nanjing, 210095, China.</Affiliation>
</AffiliationInfo>
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<LastName>Peng</LastName>
<ForeName>Qian</ForeName>
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<Affiliation>Department of Plant Pathology, Nanjing Agricultural University, Nanjing, 210095, China.</Affiliation>
</AffiliationInfo>
</Author>
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<LastName>Zhang</LastName>
<ForeName>Ying</ForeName>
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<AffiliationInfo>
<Affiliation>Department of Plant Pathology, Nanjing Agricultural University, Nanjing, 210095, China.</Affiliation>
</AffiliationInfo>
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<LastName>Yang</LastName>
<ForeName>Jin</ForeName>
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<AffiliationInfo>
<Affiliation>Department of Plant Pathology, Nanjing Agricultural University, Nanjing, 210095, China.</Affiliation>
</AffiliationInfo>
</Author>
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<LastName>Zhang</LastName>
<ForeName>Bai Yu</ForeName>
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<Affiliation>Department of Plant Pathology, Nanjing Agricultural University, Nanjing, 210095, China.</Affiliation>
</AffiliationInfo>
</Author>
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<ForeName>Bo</ForeName>
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<Affiliation>Department of Plant Pathology, Nanjing Agricultural University, Nanjing, 210095, China.</Affiliation>
</AffiliationInfo>
</Author>
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<LastName>Waletich</LastName>
<ForeName>Justin Reed</ForeName>
<Initials>JR</Initials>
<AffiliationInfo>
<Affiliation>Department of Plant Pathology, Nanjing Agricultural University, Nanjing, 210095, China.</Affiliation>
</AffiliationInfo>
</Author>
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<LastName>Yin</LastName>
<ForeName>Weixiao</ForeName>
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<Affiliation>Department of Plant Pathology, Nanjing Agricultural University, Nanjing, 210095, China.</Affiliation>
</AffiliationInfo>
</Author>
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<LastName>Zheng</LastName>
<ForeName>Xiaobo</ForeName>
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<Affiliation>Department of Plant Pathology, Nanjing Agricultural University, Nanjing, 210095, China.</Affiliation>
</AffiliationInfo>
<AffiliationInfo>
<Affiliation>Key Laboratory of Integrated Management of Crop Diseases and Pests, Ministry of Education, Nanjing, 210095, China.</Affiliation>
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<ForeName>Yuanchao</ForeName>
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<Affiliation>Department of Plant Pathology, Nanjing Agricultural University, Nanjing, 210095, China.</Affiliation>
</AffiliationInfo>
<AffiliationInfo>
<Affiliation>Key Laboratory of Integrated Management of Crop Diseases and Pests, Ministry of Education, Nanjing, 210095, China.</Affiliation>
</AffiliationInfo>
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<LastName>Dong</LastName>
<ForeName>Suomeng</ForeName>
<Initials>S</Initials>
<Identifier Source="ORCID">0000-0002-9623-6776</Identifier>
<AffiliationInfo>
<Affiliation>Department of Plant Pathology, Nanjing Agricultural University, Nanjing, 210095, China.</Affiliation>
</AffiliationInfo>
<AffiliationInfo>
<Affiliation>Key Laboratory of Integrated Management of Crop Diseases and Pests, Ministry of Education, Nanjing, 210095, China.</Affiliation>
</AffiliationInfo>
</Author>
</AuthorList>
<Language>eng</Language>
<GrantList CompleteYN="Y">
<Grant>
<GrantID>31721004</GrantID>
<Agency>National Natural Science Foundation of China</Agency>
<Country>International</Country>
</Grant>
<Grant>
<GrantID>31772144</GrantID>
<Agency>National Natural Science Foundation of China</Agency>
<Country>International</Country>
</Grant>
<Grant>
<GrantID>151025</GrantID>
<Agency>Fok Ying Tong Education Foundation</Agency>
<Country>International</Country>
</Grant>
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<PublicationType UI="D013485">Research Support, Non-U.S. Gov't</PublicationType>
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<Year>2018</Year>
<Month>08</Month>
<Day>31</Day>
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<Country>England</Country>
<MedlineTA>New Phytol</MedlineTA>
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<DescriptorName UI="D000064" MajorTopicYN="N">Acclimatization</DescriptorName>
</MeshHeading>
<MeshHeading>
<DescriptorName UI="D005838" MajorTopicYN="N">Genotype</DescriptorName>
</MeshHeading>
<MeshHeading>
<DescriptorName UI="D010838" MajorTopicYN="N">Phytophthora</DescriptorName>
<QualifierName UI="Q000235" MajorTopicYN="N">genetics</QualifierName>
<QualifierName UI="Q000502" MajorTopicYN="Y">physiology</QualifierName>
</MeshHeading>
<MeshHeading>
<DescriptorName UI="D010935" MajorTopicYN="N">Plant Diseases</DescriptorName>
<QualifierName UI="Q000235" MajorTopicYN="N">genetics</QualifierName>
<QualifierName UI="Q000276" MajorTopicYN="Y">immunology</QualifierName>
<QualifierName UI="Q000382" MajorTopicYN="N">microbiology</QualifierName>
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<MeshHeading>
<DescriptorName UI="D057865" MajorTopicYN="Y">Plant Immunity</DescriptorName>
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<MeshHeading>
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<QualifierName UI="Q000235" MajorTopicYN="Y">genetics</QualifierName>
</MeshHeading>
<MeshHeading>
<DescriptorName UI="D013025" MajorTopicYN="N">Soybeans</DescriptorName>
<QualifierName UI="Q000235" MajorTopicYN="N">genetics</QualifierName>
<QualifierName UI="Q000502" MajorTopicYN="Y">physiology</QualifierName>
</MeshHeading>
<MeshHeading>
<DescriptorName UI="D014774" MajorTopicYN="N">Virulence</DescriptorName>
</MeshHeading>
<MeshHeading>
<DescriptorName UI="D037521" MajorTopicYN="N">Virulence Factors</DescriptorName>
<QualifierName UI="Q000378" MajorTopicYN="N">metabolism</QualifierName>
</MeshHeading>
</MeshHeadingList>
<KeywordList Owner="NOTNLM">
<Keyword MajorTopicYN="Y">Phytophthora </Keyword>
<Keyword MajorTopicYN="Y">Rps3c </Keyword>
<Keyword MajorTopicYN="Y">PsAvr3c</Keyword>
<Keyword MajorTopicYN="Y">allelic variations</Keyword>
<Keyword MajorTopicYN="Y">avirulence effector</Keyword>
<Keyword MajorTopicYN="Y">coevolution</Keyword>
<Keyword MajorTopicYN="Y">soybean</Keyword>
</KeywordList>
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<Year>2018</Year>
<Month>03</Month>
<Day>28</Day>
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<Year>2018</Year>
<Month>07</Month>
<Day>26</Day>
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<Month>9</Month>
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<name sortKey="Wang, Yuanchao" sort="Wang, Yuanchao" uniqKey="Wang Y" first="Yuanchao" last="Wang">Yuanchao Wang</name>
<name sortKey="Yang, Bo" sort="Yang, Bo" uniqKey="Yang B" first="Bo" last="Yang">Bo Yang</name>
<name sortKey="Yang, Jin" sort="Yang, Jin" uniqKey="Yang J" first="Jin" last="Yang">Jin Yang</name>
<name sortKey="Yin, Weixiao" sort="Yin, Weixiao" uniqKey="Yin W" first="Weixiao" last="Yin">Weixiao Yin</name>
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