The immediate activation of defense responses in Arabidopsis roots is not sufficient to prevent Phytophthora parasitica infection.
Identifieur interne : 001819 ( Main/Exploration ); précédent : 001818; suivant : 001820The immediate activation of defense responses in Arabidopsis roots is not sufficient to prevent Phytophthora parasitica infection.
Auteurs : Agnès Attard [France] ; Mathieu Gourgues ; Nicolas Callemeyn-Torre ; Harald KellerSource :
- The New phytologist [ 1469-8137 ] ; 2010.
Descripteurs français
- KwdFr :
- Arabidopsis (génétique), Arabidopsis (immunologie), Arabidopsis (parasitologie), Feuilles de plante (cytologie), Feuilles de plante (génétique), Feuilles de plante (immunologie), Feuilles de plante (parasitologie), Immunité innée (immunologie), Interactions hôte-parasite (immunologie), Maladies des plantes (génétique), Maladies des plantes (immunologie), Maladies des plantes (parasitologie), Mutation (génétique), Phytophthora (croissance et développement), Phytophthora (cytologie), Phytophthora (pathogénicité), RT-PCR (MeSH), Racines de plante (cytologie), Racines de plante (génétique), Racines de plante (immunologie), Racines de plante (parasitologie), Régulation de l'expression des gènes végétaux (MeSH), Transduction du signal (MeSH).
- MESH :
- croissance et développement : Phytophthora.
- cytologie : Feuilles de plante, Phytophthora, Racines de plante.
- génétique : Arabidopsis, Feuilles de plante, Maladies des plantes, Mutation, Racines de plante.
- immunologie : Arabidopsis, Feuilles de plante, Immunité innée, Interactions hôte-parasite, Maladies des plantes, Racines de plante.
- parasitologie : Arabidopsis, Feuilles de plante, Maladies des plantes, Racines de plante.
- pathogénicité : Phytophthora.
- RT-PCR, Régulation de l'expression des gènes végétaux, Transduction du signal.
English descriptors
- KwdEn :
- Arabidopsis (genetics), Arabidopsis (immunology), Arabidopsis (parasitology), Gene Expression Regulation, Plant (MeSH), Host-Parasite Interactions (immunology), Immunity, Innate (immunology), Mutation (genetics), Phytophthora (cytology), Phytophthora (growth & development), Phytophthora (pathogenicity), Plant Diseases (genetics), Plant Diseases (immunology), Plant Diseases (parasitology), Plant Leaves (cytology), Plant Leaves (genetics), Plant Leaves (immunology), Plant Leaves (parasitology), Plant Roots (cytology), Plant Roots (genetics), Plant Roots (immunology), Plant Roots (parasitology), Reverse Transcriptase Polymerase Chain Reaction (MeSH), Signal Transduction (MeSH).
- MESH :
- cytology : Phytophthora, Plant Leaves, Plant Roots.
- genetics : Arabidopsis, Mutation, Plant Diseases, Plant Leaves, Plant Roots.
- growth & development : Phytophthora.
- immunology : Arabidopsis, Host-Parasite Interactions, Immunity, Innate, Plant Diseases, Plant Leaves, Plant Roots.
- parasitology : Arabidopsis, Plant Diseases, Plant Leaves, Plant Roots.
- pathogenicity : Phytophthora.
- Gene Expression Regulation, Plant, Reverse Transcriptase Polymerase Chain Reaction, Signal Transduction.
Abstract
SUMMARY
*The outcome of plant-microbe interactions is determined by a fine-tuned molecular interplay between the two partners. Little is currently known about the molecular dialogue between plant roots and filamentous pathogens. We describe here a new pathosystem for the analysis of molecular mechanisms occurring during the establishment of a compatible interaction between Arabidopsis thaliana roots and a root-infecting oomycete. *We performed cytological and genetic analyses of root infection during the compatible interaction between A. thaliana and Phytophthora parasitica. *Phytophthora parasitica uses appressoria to penetrate A. thaliana roots. Initial biotrophic growth is accompanied by the formation of haustoria, and is followed by a necrotrophic lifestyle. Arabidopsis thaliana mutants with impaired salicylic acid (SA), jasmonic acid (JA) or ethylene (ET) signaling pathways are more susceptible than the wild-type to infection. The salicylate- and jasmonate-dependent signaling pathways are concertedly activated when P. parasitica penetrates the roots, but are downregulated during invasive growth, when ethylene-mediated signaling predominates. *Thus, defense responses in A. thaliana roots are triggered immediately on contact with P. parasitica. Our findings suggest that the pattern of early defense mechanism activation differs between roots and leaves.
DOI: 10.1111/j.1469-8137.2010.03272.x
PubMed: 20456058
Affiliations:
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Little is currently known about the molecular dialogue between plant roots and filamentous pathogens. We describe here a new pathosystem for the analysis of molecular mechanisms occurring during the establishment of a compatible interaction between Arabidopsis thaliana roots and a root-infecting oomycete. *We performed cytological and genetic analyses of root infection during the compatible interaction between A. thaliana and Phytophthora parasitica. *Phytophthora parasitica uses appressoria to penetrate A. thaliana roots. Initial biotrophic growth is accompanied by the formation of haustoria, and is followed by a necrotrophic lifestyle. Arabidopsis thaliana mutants with impaired salicylic acid (SA), jasmonic acid (JA) or ethylene (ET) signaling pathways are more susceptible than the wild-type to infection. The salicylate- and jasmonate-dependent signaling pathways are concertedly activated when P. parasitica penetrates the roots, but are downregulated during invasive growth, when ethylene-mediated signaling predominates. *Thus, defense responses in A. thaliana roots are triggered immediately on contact with P. parasitica. Our findings suggest that the pattern of early defense mechanism activation differs between roots and leaves.</p></div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" Owner="NLM"><PMID Version="1">20456058</PMID><DateCompleted><Year>2010</Year><Month>10</Month><Day>19</Day></DateCompleted><DateRevised><Year>2020</Year><Month>09</Month><Day>30</Day></DateRevised><Article PubModel="Print-Electronic"><Journal><ISSN IssnType="Electronic">1469-8137</ISSN><JournalIssue CitedMedium="Internet"><Volume>187</Volume><Issue>2</Issue><PubDate><Year>2010</Year><Month>Jul</Month></PubDate></JournalIssue><Title>The New phytologist</Title><ISOAbbreviation>New Phytol</ISOAbbreviation></Journal><ArticleTitle>The immediate activation of defense responses in Arabidopsis roots is not sufficient to prevent Phytophthora parasitica infection.</ArticleTitle><Pagination><MedlinePgn>449-60</MedlinePgn></Pagination><ELocationID EIdType="doi" ValidYN="Y">10.1111/j.1469-8137.2010.03272.x</ELocationID><Abstract><AbstractText Label="SUMMARY" NlmCategory="CONCLUSIONS">*The outcome of plant-microbe interactions is determined by a fine-tuned molecular interplay between the two partners. Little is currently known about the molecular dialogue between plant roots and filamentous pathogens. We describe here a new pathosystem for the analysis of molecular mechanisms occurring during the establishment of a compatible interaction between Arabidopsis thaliana roots and a root-infecting oomycete. *We performed cytological and genetic analyses of root infection during the compatible interaction between A. thaliana and Phytophthora parasitica. *Phytophthora parasitica uses appressoria to penetrate A. thaliana roots. Initial biotrophic growth is accompanied by the formation of haustoria, and is followed by a necrotrophic lifestyle. Arabidopsis thaliana mutants with impaired salicylic acid (SA), jasmonic acid (JA) or ethylene (ET) signaling pathways are more susceptible than the wild-type to infection. The salicylate- and jasmonate-dependent signaling pathways are concertedly activated when P. parasitica penetrates the roots, but are downregulated during invasive growth, when ethylene-mediated signaling predominates. *Thus, defense responses in A. thaliana roots are triggered immediately on contact with P. parasitica. Our findings suggest that the pattern of early defense mechanism activation differs between roots and leaves.</AbstractText></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Attard</LastName><ForeName>Agnès</ForeName><Initials>A</Initials><AffiliationInfo><Affiliation>Unité Mixte de Recherches Interactions Biotiques et Santé Végétale, INRA1301-CNRS6243-UNS, 400 route des Chappes, F-06903 Sophia Antipolis, France. attard@sophia.inra.fr</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Gourgues</LastName><ForeName>Mathieu</ForeName><Initials>M</Initials></Author><Author ValidYN="Y"><LastName>Callemeyn-Torre</LastName><ForeName>Nicolas</ForeName><Initials>N</Initials></Author><Author ValidYN="Y"><LastName>Keller</LastName><ForeName>Harald</ForeName><Initials>H</Initials></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType UI="D016428">Journal Article</PublicationType></PublicationTypeList><ArticleDate 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MajorTopicYN="N">Immunity, Innate</DescriptorName><QualifierName UI="Q000276" MajorTopicYN="N">immunology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D009154" MajorTopicYN="N">Mutation</DescriptorName><QualifierName UI="Q000235" MajorTopicYN="N">genetics</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D010838" MajorTopicYN="N">Phytophthora</DescriptorName><QualifierName UI="Q000166" MajorTopicYN="N">cytology</QualifierName><QualifierName UI="Q000254" MajorTopicYN="N">growth & development</QualifierName><QualifierName UI="Q000472" MajorTopicYN="Y">pathogenicity</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="Q000469" MajorTopicYN="Y">parasitology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D018515" 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Nicolas" uniqKey="Callemeyn Torre N" first="Nicolas" last="Callemeyn-Torre">Nicolas Callemeyn-Torre</name><name sortKey="Gourgues, Mathieu" sort="Gourgues, Mathieu" uniqKey="Gourgues M" first="Mathieu" last="Gourgues">Mathieu Gourgues</name><name sortKey="Keller, Harald" sort="Keller, Harald" uniqKey="Keller H" first="Harald" last="Keller">Harald Keller</name></noCountry><country name="France"><region name="Provence-Alpes-Côte d'Azur"><name sortKey="Attard, Agnes" sort="Attard, Agnes" uniqKey="Attard A" first="Agnès" last="Attard">Agnès Attard</name></region></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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