Arabidopsis phospholipase Dβ1 modulates defense responses to bacterial and fungal pathogens

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dc.contributor.author Zhao, Jian
dc.contributor.author Devaiah, Shivakumar P.
dc.contributor.author Wang, Cunxi
dc.contributor.author Welti, Ruth
dc.contributor.author Wang, Xuemin
dc.date.accessioned 2013-10-24T18:45:40Z
dc.date.available 2013-10-24T18:45:40Z
dc.date.issued 2013-10-24
dc.identifier.uri http://hdl.handle.net/2097/16705
dc.description.abstract [1] Pathogen infection of higher plants often induces rapid production of phosphatidic acid (PA) and changes in lipid profiles, but the enzymatic basis and the function of the lipid change in pathogen–plant interactions are not well understood. [2] Infection of phospholipase D β1 (PLDβ1)-deficient plants by Pseudomonas syringae tomato pv. DC3000 (Pst DC30000) resulted in less bacterial growth than in wild-type plants, and the effect was more profound in virulent Pst DC3000 than avirulent Pst DC3000 (carrying the avirulence gene avrRpt2) infection. The expression levels of salicylic acid (SA)-inducible genes were higher, but those inducible by jasmonic acid (JA) showed lower expression in PLDβ1 mutants than in wild-type plants. [3] However, PLDβ1-deficient plants were more susceptible than wild-type plants to the fungus Botrytis cinerea. The PLDβ1-deficient plants had lower levels of PA, JA and JA-related defense gene expression after B. cinerea inoculation. [4] PLDβ1 plays a positive role in pathogen-induced JA production and plant resistance to the necrotrophic fungal pathogen B. cinerea, but a negative role in the SA-dependent signaling pathway and plant tolerance to infection with biotrophic Pst DC3000. PLDβ1 is responsible for most of the increase in PA production in response to necrotrophic B. cinerea and virulent Pst DC3000 infection, but contributes less to avirulent Pst DC3000 (avrRpt2)-induced PA production. en_US
dc.language.iso en_US en_US
dc.relation.uri http://onlinelibrary.wiley.com/doi/10.1111/nph.12256/full en_US
dc.rights Archived with the permission of New Phytologist Trust and Blackwell Publishing. The definitive version is available at www.newphytologist.com en_US
dc.subject Botrytis cinerea en_US
dc.subject Pseudomonas syringae en_US
dc.subject Arabidopsis thaliana en_US
dc.subject Pathogeneses en_US
dc.subject Phosphatidic acid en_US
dc.subject Lysophospholipids en_US
dc.subject Lipid signaling en_US
dc.title Arabidopsis phospholipase Dβ1 modulates defense responses to bacterial and fungal pathogens en_US
dc.type Article (author version) en_US
dc.date.published 2013 en_US
dc.citation.doi doi:10.1111/nph.12256 en_US
dc.citation.epage 240 en_US
dc.citation.issue 1 en_US
dc.citation.jtitle New Phytologist en_US
dc.citation.spage 228 en_US
dc.citation.volume 199 en_US
dc.contributor.authoreid welti en_US


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