Journal article
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Pathogen and circadian controlled 1 (PCC1) regulates polar lipid content, ABA-related responses, and pathogen defence in Arabidopsis thaliana
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Mir, Ricardo
Instituto de Biología Molecular y Celular de Plantas (CSIC-Universidad Politécnica de Valencia), Valencia, Spain
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Hernández, M. Luisa
Instituto de la Grasa (CSIC), Sevilla, Spain
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Abou-Mansour, Eliane
Department of Biology, University of Fribourg, Switzerland
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Martínez-Rivas, José Manuel
Instituto de la Grasa (CSIC), Sevilla, Spain
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Mauch, Félix
Department of Biology, University of Fribourg, Switzerland
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Métraux, Jean-Pierre
Department of Biology, University of Fribourg, Switzerland
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León, José
Instituto de Biología Molecular y Celular de Plantas (CSIC-Universidad Politécnica de Valencia), Valencia, Spain
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Published in:
- Journal of Experimental Botany. - 2013, vol. 64, no. 11, p. 3385–3395
English
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.
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Faculty
- Faculté des sciences et de médecine
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Department
- Département de Biologie
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Language
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Classification
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Biological sciences
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License
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License undefined
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Identifiers
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Persistent URL
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https://folia.unifr.ch/unifr/documents/303407
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