Constitutive Expressor of Pathogenesis-Related Genes5 affects cell wall biogenesis and trichome development

Show simple item record Brininstool, Ginger Kasili, Remmy Simmons, L. Alice Kirik, Viktor Hülskamp, Martin Larkin, John C. 2012-09-25T12:36:18Z 2013-07-19T07:49:38Z 2012-09-25T12:36:18Z 2013-07-19T07:49:38Z 2007-09-14
dc.description This is an Open Access article distributed under the terms of the Creative Commons Attribution License (, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. en_US
dc.description.abstract Background: The Arabidopsis thaliana CONSTITUTIVE EXPRESSOR OF PATHOGENESIS-RELATED GENES5 (CPR5) gene has been previously implicated in disease resistance, cell proliferation, cell death, and sugar sensing, and encodes a putative membrane protein of unknown biochemical function. Trichome development is also affected in cpr5 plants, which have leaf trichomes that are reduced in size and branch number. Results: In the work presented here, the role of CPR5 in trichome development was examined. Trichomes on cpr5 mutants had reduced birefringence, suggesting a difference in cell wall structure between cpr5 and wild-type trichomes. Consistent with this, leaf cell walls of cpr5 plants contained significantly less paracrystalline cellulose and had an altered wall carbohydrate composition. We also found that the effects of cpr5 on trichome size and endoreplication of trichome nuclear DNA were epistatic to the effects of mutations in triptychon (try) or overexpression of GLABRA3, indicating that these trichome developmental regulators are dependant on CPR5 function for their effects on trichome expansion and endoreplication. Conclusion: Our results suggest that CPR5 is unlikely to be a specific regulator of pathogen response pathways or senescence, but rather functions either in cell wall biogenesis or in multiple cell signaling or transcription response pathways. en_US
dc.description.sponsorship 3Department of Plant Biology, Carnegie Institution of Washington, Stanford, CA, USA en_US
dc.language.iso en en_US
dc.publisher BioMed Central en_US
dc.subject Arabidopsis thaliana en_US
dc.subject protein en_US
dc.subject cell proliferation en_US
dc.title Constitutive Expressor of Pathogenesis-Related Genes5 affects cell wall biogenesis and trichome development en_US
dc.type Article en_US

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  • College of Health Sciences (COHES) [770]
    Medical Laboratory; Agriculture & environmental Biotecthology; Biochemistry; Molecular Medicine, Applied Epidemiology; Medicinal PhytochemistryPublic Health;

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