title: Phosphoproteome analysis of B. cinerea in response to different plant-based elicitors.
abstract: The phytopathogen Botrytis cinerea is a ubiquitous fungus with a high capacity to adapt its metabolism to different hosts and environmental conditions in order to deploy a variety of virulence and pathogenicity factors and develop a successful plant infection. Here we report the first comparative phosphoproteomic study of B. cinerea, aimed to analyze the phosphoprotein composition of the fungus and its changes under different phenotypical conditions induced by two different carbon sources as plant based elicitors: glucose and deproteinized tomato cell wall (TCW). A total of 2854 and 2269 different phosphosites (2883 and 1137 phosphopeptides) were identified in glucose and TCW respectively, which map to 1338 phosphoproteins in glucose and 733 in TCW. Out of the identified phosphoproteins, 173 were exclusively found when glucose was the only carbon source and 11 when the carbon source was TCW. Differences in the pattern of phosphorylation-sites were also detected according to the carbon source. Gene ontology classification of the identified phosphoproteins showed that most of the characteristic proteins of the different carbon sources were related to signalling and transmembrane transport, thus highlighting the importance of these processes in the fungal adaptation to the surrounding conditions.
  
  
  CONCLUSIONS
  The characterization of the B. cinerea phosphoproteome under different induction conditions reported here is the first comparative phosphoproteomic approach in this model phytopathogenic fungus. The identified phosphopeptides contribute to expand the map of known phosphoproteins in this pathogen and the observed changes according to the used carbon source contribute to understand the adaptation of the fungus to the environment changes. This knowledge improves the understanding of the adaptation mechanism, defines the role of the phosphoproteins involved in this process, and enables the advance in the design of novel strategies against the fungi.
authors.affiliation: Andalusian Center for Grape and Grapevine Research, CeiA3, Marine and Environmental Sciences Faculty, University of Cadiz, Puerto Real, 11510 Cádiz, Spain.
authors.forename: Eva
authors.initials: E
authors.lastname: Liñeiro
authors.affiliation: Proteomics Unit, Centre for Genomic Regulation (CRG), Dr. Aiguader, 88, 08003 Barcelona, Spain; Proteomics Unit, Universitat Pompeu Fabra (UPF), Dr. Aiguader, 88, 08003 Barcelona, Spain.
authors.forename: Cristina
authors.initials: C
authors.lastname: Chiva
authors.affiliation: Andalusian Center for Grape and Grapevine Research, CeiA3, Marine and Environmental Sciences Faculty, University of Cadiz, Puerto Real, 11510 Cádiz, Spain.
authors.forename: Jesús M
authors.initials: JM
authors.lastname: Cantoral
authors.affiliation: Proteomics Unit, Centre for Genomic Regulation (CRG), Dr. Aiguader, 88, 08003 Barcelona, Spain; Proteomics Unit, Universitat Pompeu Fabra (UPF), Dr. Aiguader, 88, 08003 Barcelona, Spain.
authors.forename: Eduard
authors.initials: E
authors.lastname: Sabido
authors.affiliation: Andalusian Center for Grape and Grapevine Research, CeiA3, Marine and Environmental Sciences Faculty, University of Cadiz, Puerto Real, 11510 Cádiz, Spain. Electronic address: franciscojavier.fernandez@uca.es.
authors.forename: Francisco Javier
authors.initials: FJ
authors.lastname: Fernández-Acero
mesh_terms: D020171:Botrytis / Q000378:metabolism*; D005656:Fungal Proteins / Q000378:metabolism*; D018551:Solanum lycopersicum / Q000382:microbiology*; D010750:Phosphoproteins / Q000378:metabolism*; D010935:Plant Diseases / Q000382:microbiology*; D020543:Proteome / Q000378:metabolism*
chemical_list: D005656:Fungal Proteins; D010750:Phosphoproteins; D020543:Proteome
keywords: Botrytis cinerea; Phosphoproteome; Phytopathogens; Plant based elicitors; Virulence