Phosphatidylcholines from Pieris brassicae eggs activate an immune response in Arabidopsis.
Identifieur interne : 000086 ( Main/Exploration ); précédent : 000085; suivant : 000087Phosphatidylcholines from Pieris brassicae eggs activate an immune response in Arabidopsis.
Auteurs : Elia Stahl [Suisse] ; Théo Brillatz [Suisse] ; Emerson Ferreira Queiroz [Suisse] ; Laurence Marcourt [Suisse] ; André Schmiesing [Suisse] ; Olivier Hilfiker [Suisse] ; Isabelle Riezman [Suisse] ; Howard Riezman [Suisse] ; Jean-Luc Wolfender [Suisse] ; Philippe Reymond [Suisse]Source :
- eLife [ 2050-084X ] ; 2020.
Abstract
Recognition of conserved microbial molecules activates immune responses in plants, a process termed pattern-triggered immunity (PTI). Similarly, insect eggs trigger defenses that impede egg development or attract predators, but information on the nature of egg-associated elicitors is scarce. We performed an unbiased bioactivity-guided fractionation of eggs of the butterfly Pieris brassicae. Nuclear magnetic resonance (NMR) spectroscopy and mass spectrometry of active fractions led to the identification of phosphatidylcholines (PCs). PCs are released from insect eggs, and they induce salicylic acid and H2O2 accumulation, defense gene expression and cell death in Arabidopsis, all of which constitute a hallmark of PTI. Active PCs contain primarily C16 to C18-fatty acyl chains with various levels of desaturation, suggesting a relatively broad ligand specificity of cell-surface receptor(s). The finding of PCs as egg-associated molecular patterns (EAMPs) illustrates the acute ability of plants to detect conserved immunogenic patterns from their enemies, even from seemingly passive structures such as eggs.
DOI: 10.7554/eLife.60293
PubMed: 32985977
PubMed Central: PMC7521926
Affiliations:
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Vaud</region></placeName></affiliation></author><author><name sortKey="Brillatz, Theo" sort="Brillatz, Theo" uniqKey="Brillatz T" first="Théo" last="Brillatz">Théo Brillatz</name><affiliation wicri:level="4"><nlm:affiliation>School of Pharmaceutical Sciences, University of Geneva, Geneva, Switzerland.</nlm:affiliation><country xml:lang="fr">Suisse</country><wicri:regionArea>School of Pharmaceutical Sciences, University of Geneva, Geneva</wicri:regionArea><orgName type="university">Université de Genève</orgName><placeName><settlement type="city">Genève</settlement><region nuts="3" type="region">Canton de Genève</region></placeName></affiliation><affiliation wicri:level="1"><nlm:affiliation>Institute of Pharmaceutical Sciences of Western Switzerland, Geneva, Switzerland.</nlm:affiliation><country xml:lang="fr">Suisse</country><wicri:regionArea>Institute of Pharmaceutical Sciences of Western Switzerland, Geneva</wicri:regionArea><wicri:noRegion>Geneva</wicri:noRegion></affiliation></author><author><name sortKey="Ferreira Queiroz, Emerson" sort="Ferreira Queiroz, Emerson" uniqKey="Ferreira Queiroz E" first="Emerson" last="Ferreira Queiroz">Emerson Ferreira Queiroz</name><affiliation wicri:level="4"><nlm:affiliation>School of Pharmaceutical Sciences, University of Geneva, Geneva, Switzerland.</nlm:affiliation><country xml:lang="fr">Suisse</country><wicri:regionArea>School of Pharmaceutical Sciences, University of Geneva, Geneva</wicri:regionArea><orgName type="university">Université de Genève</orgName><placeName><settlement type="city">Genève</settlement><region nuts="3" type="region">Canton de Genève</region></placeName></affiliation><affiliation wicri:level="1"><nlm:affiliation>Institute of Pharmaceutical Sciences of Western Switzerland, Geneva, Switzerland.</nlm:affiliation><country xml:lang="fr">Suisse</country><wicri:regionArea>Institute of Pharmaceutical Sciences of Western Switzerland, Geneva</wicri:regionArea><wicri:noRegion>Geneva</wicri:noRegion></affiliation></author><author><name sortKey="Marcourt, Laurence" sort="Marcourt, Laurence" uniqKey="Marcourt L" first="Laurence" last="Marcourt">Laurence Marcourt</name><affiliation wicri:level="4"><nlm:affiliation>School of Pharmaceutical Sciences, University of Geneva, Geneva, Switzerland.</nlm:affiliation><country xml:lang="fr">Suisse</country><wicri:regionArea>School of Pharmaceutical Sciences, University of Geneva, Geneva</wicri:regionArea><orgName type="university">Université de Genève</orgName><placeName><settlement type="city">Genève</settlement><region nuts="3" type="region">Canton de Genève</region></placeName></affiliation><affiliation wicri:level="1"><nlm:affiliation>Institute of Pharmaceutical Sciences of Western Switzerland, Geneva, Switzerland.</nlm:affiliation><country xml:lang="fr">Suisse</country><wicri:regionArea>Institute of Pharmaceutical Sciences of Western Switzerland, Geneva</wicri:regionArea><wicri:noRegion>Geneva</wicri:noRegion></affiliation></author><author><name sortKey="Schmiesing, Andre" sort="Schmiesing, Andre" uniqKey="Schmiesing A" first="André" last="Schmiesing">André Schmiesing</name><affiliation wicri:level="3"><nlm:affiliation>Department of Plant Molecular Biology, University of Lausanne, Lausanne, Switzerland.</nlm:affiliation><country xml:lang="fr">Suisse</country><wicri:regionArea>Department of Plant Molecular Biology, University of Lausanne, Lausanne</wicri:regionArea><placeName><settlement type="city">Lausanne</settlement><region nuts="3" type="region">Canton de Vaud</region></placeName></affiliation></author><author><name sortKey="Hilfiker, Olivier" sort="Hilfiker, Olivier" uniqKey="Hilfiker O" first="Olivier" last="Hilfiker">Olivier Hilfiker</name><affiliation wicri:level="3"><nlm:affiliation>Department of Plant Molecular Biology, University of Lausanne, Lausanne, Switzerland.</nlm:affiliation><country xml:lang="fr">Suisse</country><wicri:regionArea>Department of Plant Molecular Biology, University of Lausanne, Lausanne</wicri:regionArea><placeName><settlement type="city">Lausanne</settlement><region nuts="3" type="region">Canton de Vaud</region></placeName></affiliation></author><author><name sortKey="Riezman, Isabelle" sort="Riezman, Isabelle" uniqKey="Riezman I" first="Isabelle" last="Riezman">Isabelle Riezman</name><affiliation wicri:level="4"><nlm:affiliation>NCCR Chemical Biology, University of Geneva, Geneva, Switzerland.</nlm:affiliation><country xml:lang="fr">Suisse</country><wicri:regionArea>NCCR Chemical Biology, University of Geneva, Geneva</wicri:regionArea><orgName type="university">Université de Genève</orgName><placeName><settlement type="city">Genève</settlement><region nuts="3" type="region">Canton de Genève</region></placeName></affiliation></author><author><name sortKey="Riezman, Howard" sort="Riezman, Howard" uniqKey="Riezman H" first="Howard" last="Riezman">Howard Riezman</name><affiliation wicri:level="4"><nlm:affiliation>NCCR Chemical Biology, University of Geneva, Geneva, Switzerland.</nlm:affiliation><country xml:lang="fr">Suisse</country><wicri:regionArea>NCCR Chemical Biology, University of Geneva, Geneva</wicri:regionArea><orgName type="university">Université de Genève</orgName><placeName><settlement type="city">Genève</settlement><region nuts="3" type="region">Canton de Genève</region></placeName></affiliation></author><author><name sortKey="Wolfender, Jean Luc" sort="Wolfender, Jean Luc" uniqKey="Wolfender J" first="Jean-Luc" last="Wolfender">Jean-Luc Wolfender</name><affiliation wicri:level="4"><nlm:affiliation>School of Pharmaceutical Sciences, University of Geneva, Geneva, Switzerland.</nlm:affiliation><country xml:lang="fr">Suisse</country><wicri:regionArea>School of Pharmaceutical Sciences, University of Geneva, Geneva</wicri:regionArea><orgName type="university">Université de Genève</orgName><placeName><settlement type="city">Genève</settlement><region nuts="3" type="region">Canton de Genève</region></placeName></affiliation><affiliation wicri:level="1"><nlm:affiliation>Institute of Pharmaceutical Sciences of Western Switzerland, Geneva, Switzerland.</nlm:affiliation><country xml:lang="fr">Suisse</country><wicri:regionArea>Institute of Pharmaceutical Sciences of Western Switzerland, Geneva</wicri:regionArea><wicri:noRegion>Geneva</wicri:noRegion></affiliation></author><author><name sortKey="Reymond, Philippe" sort="Reymond, Philippe" uniqKey="Reymond P" first="Philippe" last="Reymond">Philippe Reymond</name><affiliation wicri:level="3"><nlm:affiliation>Department of Plant Molecular Biology, University of Lausanne, Lausanne, Switzerland.</nlm:affiliation><country xml:lang="fr">Suisse</country><wicri:regionArea>Department of Plant Molecular Biology, University of Lausanne, Lausanne</wicri:regionArea><placeName><settlement type="city">Lausanne</settlement><region nuts="3" type="region">Canton de Vaud</region></placeName></affiliation></author></analytic><series><title level="j">eLife</title><idno type="eISSN">2050-084X</idno><imprint><date when="2020" type="published">2020</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Recognition of conserved microbial molecules activates immune responses in plants, a process termed pattern-triggered immunity (PTI). Similarly, insect eggs trigger defenses that impede egg development or attract predators, but information on the nature of egg-associated elicitors is scarce. We performed an unbiased bioactivity-guided fractionation of eggs of the butterfly <i>Pieris brassicae</i>. Nuclear magnetic resonance (NMR) spectroscopy and mass spectrometry of active fractions led to the identification of phosphatidylcholines (PCs). PCs are released from insect eggs, and they induce salicylic acid and H<sub>2</sub>O<sub>2</sub> accumulation, defense gene expression and cell death in <i>Arabidopsis</i>, all of which constitute a hallmark of PTI. Active PCs contain primarily C16 to C18-fatty acyl chains with various levels of desaturation, suggesting a relatively broad ligand specificity of cell-surface receptor(s). The finding of PCs as egg-associated molecular patterns (EAMPs) illustrates the acute ability of plants to detect conserved immunogenic patterns from their enemies, even from seemingly passive structures such as eggs.</div></front></TEI><pubmed><MedlineCitation Status="In-Process" Owner="NLM"><PMID Version="1">32985977</PMID><DateRevised><Year>2020</Year><Month>10</Month><Day>07</Day></DateRevised><Article PubModel="Electronic"><Journal><ISSN IssnType="Electronic">2050-084X</ISSN><JournalIssue CitedMedium="Internet"><Volume>9</Volume><PubDate><Year>2020</Year><Month>09</Month><Day>28</Day></PubDate></JournalIssue><Title>eLife</Title><ISOAbbreviation>Elife</ISOAbbreviation></Journal><ArticleTitle>Phosphatidylcholines from <i>Pieris brassicae</i> eggs activate an immune response in Arabidopsis.</ArticleTitle><ELocationID EIdType="doi" ValidYN="Y">10.7554/eLife.60293</ELocationID><ELocationID EIdType="pii" ValidYN="Y">e60293</ELocationID><Abstract><AbstractText>Recognition of conserved microbial molecules activates immune responses in plants, a process termed pattern-triggered immunity (PTI). Similarly, insect eggs trigger defenses that impede egg development or attract predators, but information on the nature of egg-associated elicitors is scarce. We performed an unbiased bioactivity-guided fractionation of eggs of the butterfly <i>Pieris brassicae</i>. Nuclear magnetic resonance (NMR) spectroscopy and mass spectrometry of active fractions led to the identification of phosphatidylcholines (PCs). PCs are released from insect eggs, and they induce salicylic acid and H<sub>2</sub>O<sub>2</sub> accumulation, defense gene expression and cell death in <i>Arabidopsis</i>, all of which constitute a hallmark of PTI. Active PCs contain primarily C16 to C18-fatty acyl chains with various levels of desaturation, suggesting a relatively broad ligand specificity of cell-surface receptor(s). The finding of PCs as egg-associated molecular patterns (EAMPs) illustrates the acute ability of plants to detect conserved immunogenic patterns from their enemies, even from seemingly passive structures such as eggs.</AbstractText><CopyrightInformation>© 2020, Stahl et al.</CopyrightInformation></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Stahl</LastName><ForeName>Elia</ForeName><Initials>E</Initials><AffiliationInfo><Affiliation>Department of Plant Molecular Biology, University of Lausanne, Lausanne, Switzerland.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Brillatz</LastName><ForeName>Théo</ForeName><Initials>T</Initials><AffiliationInfo><Affiliation>School of Pharmaceutical Sciences, University of Geneva, Geneva, Switzerland.</Affiliation></AffiliationInfo><AffiliationInfo><Affiliation>Institute of Pharmaceutical Sciences of Western Switzerland, Geneva, Switzerland.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Ferreira Queiroz</LastName><ForeName>Emerson</ForeName><Initials>E</Initials><Identifier Source="ORCID">0000-0001-9567-1664</Identifier><AffiliationInfo><Affiliation>School of Pharmaceutical Sciences, University of Geneva, Geneva, Switzerland.</Affiliation></AffiliationInfo><AffiliationInfo><Affiliation>Institute of Pharmaceutical Sciences of Western Switzerland, Geneva, Switzerland.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Marcourt</LastName><ForeName>Laurence</ForeName><Initials>L</Initials><AffiliationInfo><Affiliation>School of Pharmaceutical Sciences, University of Geneva, Geneva, Switzerland.</Affiliation></AffiliationInfo><AffiliationInfo><Affiliation>Institute of Pharmaceutical Sciences of Western Switzerland, Geneva, Switzerland.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Schmiesing</LastName><ForeName>André</ForeName><Initials>A</Initials><AffiliationInfo><Affiliation>Department of Plant Molecular Biology, University of Lausanne, Lausanne, Switzerland.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Hilfiker</LastName><ForeName>Olivier</ForeName><Initials>O</Initials><AffiliationInfo><Affiliation>Department of Plant Molecular Biology, University of Lausanne, Lausanne, Switzerland.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Riezman</LastName><ForeName>Isabelle</ForeName><Initials>I</Initials><AffiliationInfo><Affiliation>NCCR Chemical Biology, University of Geneva, Geneva, Switzerland.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Riezman</LastName><ForeName>Howard</ForeName><Initials>H</Initials><Identifier Source="ORCID">0000-0003-4680-9422</Identifier><AffiliationInfo><Affiliation>NCCR Chemical Biology, University of Geneva, Geneva, Switzerland.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Wolfender</LastName><ForeName>Jean-Luc</ForeName><Initials>JL</Initials><Identifier Source="ORCID">0000-0002-0125-952X</Identifier><AffiliationInfo><Affiliation>School of Pharmaceutical Sciences, University of Geneva, Geneva, Switzerland.</Affiliation></AffiliationInfo><AffiliationInfo><Affiliation>Institute of Pharmaceutical Sciences of Western Switzerland, Geneva, Switzerland.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Reymond</LastName><ForeName>Philippe</ForeName><Initials>P</Initials><Identifier Source="ORCID">0000-0002-3341-6200</Identifier><AffiliationInfo><Affiliation>Department of Plant Molecular Biology, University of Lausanne, Lausanne, Switzerland.</Affiliation></AffiliationInfo></Author></AuthorList><Language>eng</Language><DataBankList CompleteYN="Y"><DataBank><DataBankName>GEO</DataBankName><AccessionNumberList><AccessionNumber>GSE144091</AccessionNumber></AccessionNumberList></DataBank></DataBankList><GrantList CompleteYN="Y"><Grant><GrantID>31003A_169278</GrantID><Agency>Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung</Agency><Country>International</Country></Grant><Grant><GrantID>166686</GrantID><Agency>Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung</Agency><Country>International</Country></Grant><Grant><GrantID>316030_164095</GrantID><Agency>Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung</Agency><Country>International</Country></Grant></GrantList><PublicationTypeList><PublicationType UI="D016428">Journal Article</PublicationType><PublicationType UI="D013485">Research Support, Non-U.S. Gov't</PublicationType></PublicationTypeList><ArticleDate DateType="Electronic"><Year>2020</Year><Month>09</Month><Day>28</Day></ArticleDate></Article><MedlineJournalInfo><Country>England</Country><MedlineTA>Elife</MedlineTA><NlmUniqueID>101579614</NlmUniqueID><ISSNLinking>2050-084X</ISSNLinking></MedlineJournalInfo><CitationSubset>IM</CitationSubset><KeywordList Owner="NOTNLM"><Keyword MajorTopicYN="Y">A. thaliana</Keyword><Keyword MajorTopicYN="Y">Pieris brassicae</Keyword><Keyword MajorTopicYN="Y">innate immunity</Keyword><Keyword MajorTopicYN="Y">insect eggs</Keyword><Keyword MajorTopicYN="Y">phosphatidylcholines</Keyword><Keyword MajorTopicYN="Y">plant biology</Keyword><Keyword MajorTopicYN="Y">plant defense</Keyword></KeywordList><CoiStatement>ES, TB, EF, LM, AS, OH, IR, HR, JW, PR No competing interests declared</CoiStatement></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="received"><Year>2020</Year><Month>06</Month><Day>22</Day></PubMedPubDate><PubMedPubDate PubStatus="accepted"><Year>2020</Year><Month>09</Month><Day>09</Day></PubMedPubDate><PubMedPubDate PubStatus="entrez"><Year>2020</Year><Month>9</Month><Day>28</Day><Hour>12</Hour><Minute>19</Minute></PubMedPubDate><PubMedPubDate PubStatus="pubmed"><Year>2020</Year><Month>9</Month><Day>29</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate 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