A plant-responsive bacterial-signaling system senses an ethanolamine derivative.
Identifieur interne : 001074 ( Main/Exploration ); précédent : 001073; suivant : 001075A plant-responsive bacterial-signaling system senses an ethanolamine derivative.
Auteurs : Bruna G. Coutinho [États-Unis] ; Emily Mevers [États-Unis] ; Amy L. Schaefer [États-Unis] ; Dale A. Pelletier [États-Unis] ; Caroline S. Harwood [États-Unis] ; Jon Clardy [États-Unis] ; E Peter Greenberg [États-Unis]Source :
- Proceedings of the National Academy of Sciences of the United States of America [ 1091-6490 ] ; 2018.
Descripteurs français
- KwdFr :
- Acétamides (métabolisme), Acétamides (pharmacologie), Endophytes (métabolisme), Endophytes (physiologie), Facteur de croissance végétal (métabolisme), Facteur de croissance végétal (physiologie), Feuilles de plante (métabolisme), Populus (microbiologie), Populus (métabolisme), Protéines de liaison périplasmiques (métabolisme), Protéines de répression (métabolisme), Protéines de répression (physiologie), Pseudomonas (métabolisme), Pseudomonas (physiologie), Racines de plante (microbiologie), Régulation de l'expression des gènes bactériens (MeSH), Spectrométrie de masse (MeSH), Transactivateurs (métabolisme), Transactivateurs (physiologie), Éthanolamine (métabolisme).
- MESH :
- microbiologie : Populus, Racines de plante.
- métabolisme : Acétamides, Endophytes, Facteur de croissance végétal, Feuilles de plante, Populus, Protéines de liaison périplasmiques, Protéines de répression, Pseudomonas, Transactivateurs, Éthanolamine.
- pharmacologie : Acétamides.
- physiologie : Endophytes, Facteur de croissance végétal, Protéines de répression, Pseudomonas, Transactivateurs.
- Régulation de l'expression des gènes bactériens, Spectrométrie de masse.
English descriptors
- KwdEn :
- Acetamides (metabolism), Acetamides (pharmacology), Endophytes (metabolism), Endophytes (physiology), Ethanolamine (metabolism), Gene Expression Regulation, Bacterial (MeSH), Mass Spectrometry (MeSH), Periplasmic Binding Proteins (metabolism), Plant Growth Regulators (metabolism), Plant Growth Regulators (physiology), Plant Leaves (metabolism), Plant Roots (microbiology), Populus (metabolism), Populus (microbiology), Pseudomonas (metabolism), Pseudomonas (physiology), Repressor Proteins (metabolism), Repressor Proteins (physiology), Trans-Activators (metabolism), Trans-Activators (physiology).
- MESH :
- chemical , metabolism : Acetamides, Ethanolamine, Periplasmic Binding Proteins, Plant Growth Regulators, Repressor Proteins, Trans-Activators.
- chemical , pharmacology : Acetamides.
- metabolism : Endophytes, Plant Leaves, Populus, Pseudomonas.
- microbiology : Plant Roots, Populus.
- physiology : Endophytes, Plant Growth Regulators, Pseudomonas, Repressor Proteins, Trans-Activators.
- Gene Expression Regulation, Bacterial, Mass Spectrometry.
Abstract
Certain plant-associated Proteobacteria sense their host environment by detecting an unknown plant signal recognized by a member of a LuxR subfamily of transcription factors. This interkingdom communication is important for both mutualistic and pathogenic interactions. The Populus root endophyte Pseudomonas sp. GM79 possesses such a regulator, named PipR. In a previous study we reported that PipR activates an adjacent gene (pipA) coding for a proline iminopeptidase in response to Populus leaf macerates and peptides and that this activation is dependent on a putative ABC-type transporter [Schaefer AL, et al. (2016) mBio 7:e01101-16]. In this study we identify a chemical derived from ethanolamine that induces PipR activity at picomolar concentrations, and we present evidence that this is the active inducer present in plant leaf macerates. First, a screen of more than 750 compounds indicated ethanolamine was a potent inducer for the PipR-sensing system; however, ethanolamine failed to bind to the periplasmic-binding protein (PBP) required for the signal response. This led us to discover that a specific ethanolamine derivative, N-(2-hydroxyethyl)-2-(2-hydroxyethylamino) acetamide (HEHEAA), binds to the PBP and serves as a potent PipR-dependent inducer. We also show that a compound, which coelutes with HEHEAA in HPLC and induces pipA gene expression in a PipR-dependent manner, can be found in Populus leaf macerates. This work sheds light on how plant-associated bacteria can sense their environment and on the nature of inducers for a family of plant-responsive LuxR-like transcription factors found in plant-associated bacteria.
DOI: 10.1073/pnas.1809611115
PubMed: 30190434
PubMed Central: PMC6166808
Affiliations:
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This interkingdom communication is important for both mutualistic and pathogenic interactions. The <i>Populus</i> root endophyte <i>Pseudomonas</i> sp. GM79 possesses such a regulator, named PipR. In a previous study we reported that PipR activates an adjacent gene (<i>pipA</i>) coding for a proline iminopeptidase in response to <i>Populus</i> leaf macerates and peptides and that this activation is dependent on a putative ABC-type transporter [Schaefer AL, et al. (2016) mBio 7:e01101-16]. In this study we identify a chemical derived from ethanolamine that induces PipR activity at picomolar concentrations, and we present evidence that this is the active inducer present in plant leaf macerates. First, a screen of more than 750 compounds indicated ethanolamine was a potent inducer for the PipR-sensing system; however, ethanolamine failed to bind to the periplasmic-binding protein (PBP) required for the signal response. This led us to discover that a specific ethanolamine derivative, <i>N</i>-(2-hydroxyethyl)-2-(2-hydroxyethylamino) acetamide (HEHEAA), binds to the PBP and serves as a potent PipR-dependent inducer. We also show that a compound, which coelutes with HEHEAA in HPLC and induces <i>pipA</i> gene expression in a PipR-dependent manner, can be found in <i>Populus</i> leaf macerates. This work sheds light on how plant-associated bacteria can sense their environment and on the nature of inducers for a family of plant-responsive LuxR-like transcription factors found in plant-associated bacteria.</div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" Owner="NLM"><PMID Version="1">30190434</PMID><DateCompleted><Year>2018</Year><Month>10</Month><Day>22</Day></DateCompleted><DateRevised><Year>2019</Year><Month>03</Month><Day>29</Day></DateRevised><Article PubModel="Print-Electronic"><Journal><ISSN IssnType="Electronic">1091-6490</ISSN><JournalIssue CitedMedium="Internet"><Volume>115</Volume><Issue>39</Issue><PubDate><Year>2018</Year><Month>09</Month><Day>25</Day></PubDate></JournalIssue><Title>Proceedings of the National Academy of Sciences of the United States of America</Title><ISOAbbreviation>Proc Natl Acad Sci U S A</ISOAbbreviation></Journal><ArticleTitle>A plant-responsive bacterial-signaling system senses an ethanolamine derivative.</ArticleTitle><Pagination><MedlinePgn>9785-9790</MedlinePgn></Pagination><ELocationID EIdType="doi" ValidYN="Y">10.1073/pnas.1809611115</ELocationID><Abstract><AbstractText>Certain plant-associated Proteobacteria sense their host environment by detecting an unknown plant signal recognized by a member of a LuxR subfamily of transcription factors. This interkingdom communication is important for both mutualistic and pathogenic interactions. The <i>Populus</i> root endophyte <i>Pseudomonas</i> sp. GM79 possesses such a regulator, named PipR. In a previous study we reported that PipR activates an adjacent gene (<i>pipA</i>) coding for a proline iminopeptidase in response to <i>Populus</i> leaf macerates and peptides and that this activation is dependent on a putative ABC-type transporter [Schaefer AL, et al. (2016) mBio 7:e01101-16]. In this study we identify a chemical derived from ethanolamine that induces PipR activity at picomolar concentrations, and we present evidence that this is the active inducer present in plant leaf macerates. First, a screen of more than 750 compounds indicated ethanolamine was a potent inducer for the PipR-sensing system; however, ethanolamine failed to bind to the periplasmic-binding protein (PBP) required for the signal response. This led us to discover that a specific ethanolamine derivative, <i>N</i>-(2-hydroxyethyl)-2-(2-hydroxyethylamino) acetamide (HEHEAA), binds to the PBP and serves as a potent PipR-dependent inducer. We also show that a compound, which coelutes with HEHEAA in HPLC and induces <i>pipA</i> gene expression in a PipR-dependent manner, can be found in <i>Populus</i> leaf macerates. This work sheds light on how plant-associated bacteria can sense their environment and on the nature of inducers for a family of plant-responsive LuxR-like transcription factors found in plant-associated bacteria.</AbstractText></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Coutinho</LastName><ForeName>Bruna G</ForeName><Initials>BG</Initials><AffiliationInfo><Affiliation>Department of Microbiology, University of Washington, Seattle, WA 98195.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Mevers</LastName><ForeName>Emily</ForeName><Initials>E</Initials><AffiliationInfo><Affiliation>Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA 02115.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Schaefer</LastName><ForeName>Amy L</ForeName><Initials>AL</Initials><AffiliationInfo><Affiliation>Department of Microbiology, University of Washington, Seattle, WA 98195.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Pelletier</LastName><ForeName>Dale A</ForeName><Initials>DA</Initials><AffiliationInfo><Affiliation>Biosciences Division, Oak Ridge National Laboratory, Oak Ridge, TN 37830.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Harwood</LastName><ForeName>Caroline S</ForeName><Initials>CS</Initials><Identifier Source="ORCID">0000-0003-4450-5177</Identifier><AffiliationInfo><Affiliation>Department of Microbiology, University of Washington, Seattle, WA 98195.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Clardy</LastName><ForeName>Jon</ForeName><Initials>J</Initials><Identifier Source="ORCID">0000-0003-0213-8356</Identifier><AffiliationInfo><Affiliation>Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA 02115.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Greenberg</LastName><ForeName>E Peter</ForeName><Initials>EP</Initials><Identifier Source="ORCID">0000-0001-9474-8041</Identifier><AffiliationInfo><Affiliation>Department of Microbiology, University of Washington, Seattle, WA 98195; epgreen@uw.edu.</Affiliation></AffiliationInfo></Author></AuthorList><Language>eng</Language><GrantList CompleteYN="Y"><Grant><GrantID>R01 AT009708</GrantID><Acronym>AT</Acronym><Agency>NCCIH NIH HHS</Agency><Country>United States</Country></Grant></GrantList><PublicationTypeList><PublicationType UI="D016428">Journal Article</PublicationType><PublicationType UI="D052061">Research Support, N.I.H., Extramural</PublicationType><PublicationType UI="D013486">Research Support, U.S. Gov't, Non-P.H.S.</PublicationType></PublicationTypeList><ArticleDate DateType="Electronic"><Year>2018</Year><Month>09</Month><Day>06</Day></ArticleDate></Article><MedlineJournalInfo><Country>United States</Country><MedlineTA>Proc Natl Acad Sci U S A</MedlineTA><NlmUniqueID>7505876</NlmUniqueID><ISSNLinking>0027-8424</ISSNLinking></MedlineJournalInfo><ChemicalList><Chemical><RegistryNumber>0</RegistryNumber><NameOfSubstance UI="D000081">Acetamides</NameOfSubstance></Chemical><Chemical><RegistryNumber>0</RegistryNumber><NameOfSubstance UI="C000628675">N-(2-hydroxyethyl)-2-(2-hydroxyethylamino) acetamide</NameOfSubstance></Chemical><Chemical><RegistryNumber>0</RegistryNumber><NameOfSubstance UI="D033902">Periplasmic Binding Proteins</NameOfSubstance></Chemical><Chemical><RegistryNumber>0</RegistryNumber><NameOfSubstance UI="D010937">Plant Growth Regulators</NameOfSubstance></Chemical><Chemical><RegistryNumber>0</RegistryNumber><NameOfSubstance UI="D012097">Repressor Proteins</NameOfSubstance></Chemical><Chemical><RegistryNumber>0</RegistryNumber><NameOfSubstance UI="D015534">Trans-Activators</NameOfSubstance></Chemical><Chemical><RegistryNumber>115038-68-1</RegistryNumber><NameOfSubstance UI="C064778">LuxR autoinducer binding proteins</NameOfSubstance></Chemical><Chemical><RegistryNumber>5KV86114PT</RegistryNumber><NameOfSubstance UI="D019856">Ethanolamine</NameOfSubstance></Chemical></ChemicalList><CitationSubset>IM</CitationSubset><MeshHeadingList><MeshHeading><DescriptorName UI="D000081" MajorTopicYN="N">Acetamides</DescriptorName><QualifierName UI="Q000378" MajorTopicYN="Y">metabolism</QualifierName><QualifierName UI="Q000494" MajorTopicYN="N">pharmacology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D060026" MajorTopicYN="N">Endophytes</DescriptorName><QualifierName UI="Q000378" MajorTopicYN="N">metabolism</QualifierName><QualifierName UI="Q000502" MajorTopicYN="Y">physiology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D019856" MajorTopicYN="N">Ethanolamine</DescriptorName><QualifierName UI="Q000378" MajorTopicYN="Y">metabolism</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D015964" MajorTopicYN="N">Gene Expression Regulation, Bacterial</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D013058" MajorTopicYN="N">Mass Spectrometry</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D033902" MajorTopicYN="N">Periplasmic Binding Proteins</DescriptorName><QualifierName UI="Q000378" MajorTopicYN="N">metabolism</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D010937" MajorTopicYN="N">Plant Growth Regulators</DescriptorName><QualifierName UI="Q000378" MajorTopicYN="N">metabolism</QualifierName><QualifierName UI="Q000502" MajorTopicYN="Y">physiology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D018515" MajorTopicYN="N">Plant Leaves</DescriptorName><QualifierName UI="Q000378" MajorTopicYN="N">metabolism</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D018517" MajorTopicYN="N">Plant Roots</DescriptorName><QualifierName UI="Q000382" MajorTopicYN="N">microbiology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D032107" MajorTopicYN="N">Populus</DescriptorName><QualifierName UI="Q000378" MajorTopicYN="N">metabolism</QualifierName><QualifierName UI="Q000382" MajorTopicYN="Y">microbiology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D011549" MajorTopicYN="N">Pseudomonas</DescriptorName><QualifierName UI="Q000378" MajorTopicYN="N">metabolism</QualifierName><QualifierName UI="Q000502" MajorTopicYN="Y">physiology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D012097" MajorTopicYN="N">Repressor Proteins</DescriptorName><QualifierName UI="Q000378" MajorTopicYN="N">metabolism</QualifierName><QualifierName UI="Q000502" MajorTopicYN="N">physiology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D015534" MajorTopicYN="N">Trans-Activators</DescriptorName><QualifierName UI="Q000378" MajorTopicYN="N">metabolism</QualifierName><QualifierName UI="Q000502" MajorTopicYN="N">physiology</QualifierName></MeshHeading></MeshHeadingList><KeywordList Owner="NOTNLM"><Keyword MajorTopicYN="Y">LuxR homolog</Keyword><Keyword MajorTopicYN="Y">ethanolamine</Keyword><Keyword MajorTopicYN="Y">plant–microbe interactions</Keyword><Keyword MajorTopicYN="Y">quorum sensing</Keyword><Keyword MajorTopicYN="Y">transcription activator</Keyword></KeywordList><CoiStatement>The authors declare no conflict of interest.</CoiStatement></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="pubmed"><Year>2018</Year><Month>9</Month><Day>8</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2018</Year><Month>10</Month><Day>23</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="entrez"><Year>2018</Year><Month>9</Month><Day>8</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">30190434</ArticleId><ArticleId IdType="pii">1809611115</ArticleId><ArticleId 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last="Coutinho">Bruna G. Coutinho</name></region><name sortKey="Clardy, Jon" sort="Clardy, Jon" uniqKey="Clardy J" first="Jon" last="Clardy">Jon Clardy</name><name sortKey="Greenberg, E Peter" sort="Greenberg, E Peter" uniqKey="Greenberg E" first="E Peter" last="Greenberg">E Peter Greenberg</name><name sortKey="Harwood, Caroline S" sort="Harwood, Caroline S" uniqKey="Harwood C" first="Caroline S" last="Harwood">Caroline S. Harwood</name><name sortKey="Mevers, Emily" sort="Mevers, Emily" uniqKey="Mevers E" first="Emily" last="Mevers">Emily Mevers</name><name sortKey="Pelletier, Dale A" sort="Pelletier, Dale A" uniqKey="Pelletier D" first="Dale A" last="Pelletier">Dale A. Pelletier</name><name sortKey="Schaefer, Amy L" sort="Schaefer, Amy L" uniqKey="Schaefer A" first="Amy L" last="Schaefer">Amy L. Schaefer</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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