title: Plant pathogenesis-related (PR) proteins: a focus on PR peptides.
abstract: The novel classes of plant pathogenesis-related (PR) proteins identified during the last decade also include novel peptide families. This review specifically focuses on these pathogenesis-related peptides, including proteinase inhibitors (PR-6 family), plant defensins (PR-12 family), thionins (PR-13 family) and lipid transfer proteins (PR-14 family). For each family of PR peptides, the general features concerning occurrence, expression and possible functions of their members are described. Next, more specifically the occurrence of each PR peptide family in the model plant Arabidopsis thaliana is discussed. Single-gene studies performed on particular gene members of a PR peptide family are reported. In addition, expression data of yet undescribed gene members of that particular PR peptide family are presented by consultation of publicly available micro-array databases. Finally an update is provided on the potential role of these PR peptides in A. thaliana, with a focus on their possible involvement in plant defense.
authors.affiliation: Centre of Microbial and Plant Genetics, Katholieke Universiteit Leuven, Kasteelpark Arenberg 20, B-3001 Heverlee, Belgium.
authors.forename: Jan
authors.initials: J
authors.lastname: Sels
authors.forename: Janick
authors.initials: J
authors.lastname: Mathys
authors.forename: Barbara M A
authors.initials: BM
authors.lastname: De Coninck
authors.forename: Bruno P A
authors.initials: BP
authors.lastname: Cammue
authors.forename: Miguel F C
authors.initials: MF
authors.lastname: De Bolle
mesh_terms: D052179:Antigens, Plant / Q000235:genetics / Q000378:metabolism; D017360:Arabidopsis / Q000235:genetics / Q000502:physiology; D029681:Arabidopsis Proteins / Q000235:genetics / Q000502:physiology*; D002352:Carrier Proteins / Q000235:genetics / Q000378:metabolism; D023082:Defensins / Q000235:genetics / Q000502:physiology; D015870:Gene Expression; D018506:Gene Expression Regulation, Plant; D017343:Genes, Plant; D010935:Plant Diseases; D010940:Plant Proteins / Q000145:classification / Q000235:genetics / Q000378:metabolism / Q000502:physiology*; D015842:Serine Proteinase Inhibitors / Q000235:genetics / Q000502:physiology; D054809:Thionins / Q000235:genetics / Q000502:physiology
chemical_list: D052179:Antigens, Plant; D029681:Arabidopsis Proteins; D002352:Carrier Proteins; D023082:Defensins; D010940:Plant Proteins; D015842:Serine Proteinase Inhibitors; D054809:Thionins; C511920:lipid transfer proteins, plant; C053376:pathogenesis-related proteins, plant