Phytotoxicity and Innate Immune Responses Induced by Nep1-Like Proteins (Record no. 42866)

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control field 20250625124722.0
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Transcribing agency CICY
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Classification number (OCLC) (R) ; Classification number, CALL (RLIN) (NR) B-8562
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Title Phytotoxicity and Innate Immune Responses Induced by Nep1-Like Proteins
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Volume/sequential designation The Plant Cell, 18(12), p.3721-3744, 2006
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Summary, etc. We show that oomycete-derived Nep1 (for necrosis and ethylene-inducing peptide1)-like proteins (NLPs)trigger a comprehensive immune response in Arabidopsis thaliana, comprising posttranslational activation of mitogen-activated protein kinase activity, deposition of callose, production of nitric oxide, reactive oxygen intermediates, ethylene, and the phytoalexin camalexin, as well as cell death. Transcript profiling experiments revealed that NLPs trigger extensive reprogramming of the Arabidopsis transcriptome closely resembling that evoked by bacteria-derived flagellin. NLP-induced cell death is an active, light-dependent process requiring HSP90 but not caspase activity, salicylic acid, jasmonic acid, ethylene, or functional SGT1a/SGT1b. Studies on animal, yeast, moss, and plant cells revealed that sensitivity to NLPs is not a general characteristic of phospholipid bilayer systems but appears to be restricted to dicot plants. NLP-induced cell death does not require an intact plant cell wall, and ectopic expression of NLP in dicot plants resulted in cell death only when the protein was delivered to the apoplast. Our findings strongly suggest that NLP-induced necrosis requires interaction with a target site that is unique to the extracytoplasmic side of dicot plant plasma membranes. We propose that NLPs play dual roles in plant pathogen interactions as toxin-like virulence factors and as triggers of plant innate immune responses.
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Personal name Qutob, D.
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Personal name Kemmerling, B.
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Personal name Brunner, F.
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Personal name Kufner, I.
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Personal name Engelhardt, S.
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Personal name Gust, A.A.
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Uniform Resource Identifier <a href="https://drive.google.com/file/d/11XivDi1cUPoer1Tts2z8-gE0Lf28t_Q3/view?usp=drivesdk">https://drive.google.com/file/d/11XivDi1cUPoer1Tts2z8-gE0Lf28t_Q3/view?usp=drivesdk</a>
Public note Para ver el documento ingresa a Google con tu cuenta: @cicy.edu.mx
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Source of classification or shelving scheme Clasificación local
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  Clasificación local     Ref1 CICY CICY Documento préstamo interbibliotecario 25.06.2025   B-8562 25.06.2025 25.06.2025 Documentos solicitados