title: The secretome of the maize pathogen Ustilago maydis.
abstract: Ustilago maydis establishes a biotrophic relationship with its host plant, i.e. plant cells stay alive despite massive fungal growth in infected tissue. The genome sequence has revealed that U. maydis is poorly equipped with plant cell wall degrading enzymes and uses novel secreted protein effectors as crucial determinants for biotrophic development. Many of these effector genes are clustered and differentially regulated during plant colonization. In this review, we analyze the secretome of U. maydis by differentiating between secreted enzymes, likely structural proteins of the fungal cell wall (excluding GPI-anchored proteins) as well as likely effectors with either apoplastic or cytoplasmic function. This classification is based on the presence of functional domains, general domain structure and cysteine pattern. In addition, we discuss possible functions of selected protein classes with a special focus on disease development.
authors.affiliation: Max Planck Institute for Terrestrial Microbiology, Karl-von-Frisch-Strasse, D-35043 Marburg, Germany.
authors.forename: Olaf
authors.initials: O
authors.lastname: Mueller
authors.forename: Regine
authors.initials: R
authors.lastname: Kahmann
authors.forename: Guillermo
authors.initials: G
authors.lastname: Aguilar
authors.forename: Blanca
authors.initials: B
authors.lastname: Trejo-Aguilar
authors.forename: Andy
authors.initials: A
authors.lastname: Wu
authors.forename: Ronald P
authors.initials: RP
authors.lastname: de Vries
mesh_terms: D005656:Fungal Proteins / Q000235:genetics / Q000378:metabolism* / Q000502:physiology; D010935:Plant Diseases / Q000382:microbiology*; D014588:Ustilago / Q000235:genetics / Q000254:growth & development / Q000378:metabolism*; D003313:Zea mays / Q000382:microbiology*
chemical_list: D005656:Fungal Proteins