Fulltext

Pathogen and Circadian Controlled 1 (PCC1) regulates polar lipid content, ABA-related responses, and pathogen defence in Arabidopsis thaliana

Mir, Ricardo ; Hernández, M. Luisa ; Abou-Mansour, Eliane ; Martínez-Rivas, José Manuel ; Mauch, Félix ; Métraux, Jean-Pierre ; León, José

In: Journal Of Experimental Botany, 2013, vol. 64, no. 11, p. 3385-3395

Aggiungi alla tua lista
    Titre
    • Pathogen and Circadian Controlled 1 (PCC1) regulates polar lipid content, ABA-related responses, and pathogen defence in Arabidopsis thaliana
    Auteur
    • Mir, Ricardo. Instituto de Biología Molecular y Celular de Plantas (CSIC-Universidad Politécnica de Valencia), Ciudad Politécnica de la Innovación, Edificio 8E, Avda. Ingeniero Fausto Elio s/n, 46022 Valencia, Spain
    • Hernández, M. Luisa. Instituto de la Grasa (CSIC), Avda. Padre García Tejero 4, 41012-Sevilla, Spain
    • Abou-Mansour, Eliane. Department of Biology, University of Fribourg, Fribourg, Switzerland
    • Martínez-Rivas, José Manuel. Instituto de la Grasa (CSIC), Avda. Padre García Tejero 4, 41012-Sevilla, Spain
    • Mauch, Félix. Department of Biology, University of Fribourg, Fribourg, Switzerland
    • Métraux, Jean-Pierre. Department of Biology, University of Fribourg, Fribourg, Switzerland
    • León, José. Instituto de Biología Molecular y Celular de Plantas (CSIC-Universidad Politécnica de Valencia), Ciudad Politécnica de la Innovación, Edificio 8E, Avda. Ingeniero Fausto Elio s/n, 46022 Valencia, Spain
    Type de document
    • Postprint
    Langue
    • Inglese
    Publié dans
    • Journal Of Experimental Botany, 2013, vol. 64, no. 11, p. 3385-3395. Oxford University Press
    Autre version électronique
    Identifiant OAI-PMH
    • oai:doc.rero.ch:291026
    Summary
    Pathogen and Circadian Controlled 1 (PCC1) was previously characterized as a regulator of defence against pathogens and stress-activated transition to flowering. Plants expressing an RNA interference construct for the PCC1 gene (iPCC1 plants) showed a pleiotropic phenotype. They were hypersensitive to abscisic acid (ABA) as shown by reduced germination potential and seedling establishment, as well as reduced stomatal aperture and main root length in ABA-supplemented media. In addition, iPCC1 plants displayed alterations in polar lipid contents and their corresponding fatty acids. Importantly, a significant reduction in the content of phosphatidylinositol (PI) was observed in iPCC1 leaves when compared with wild-type plants. A trend in reduced levels of 18:0 and increased levels of 18:2 and particularly 18:3 was also detected in several classes of polar lipids. The enhanced ABA-mediated responses and the reduced content of PI might be responsible for iPCC1 plants displaying a complex pattern of defence against pathogens of different lifestyles. iPCC1 plants were more susceptible to the hemi-biotrophic oomycete pathogen Phytophthora brassicae and more resistant to the necrotrophic fungal pathogen Botrytis cinerea compared with wild-type plants