title: Senescence-associated proteases in plants.
abstract: Senescence is the final developmental stage of every plant organ, which leads to cell death. It is a highly regulated process, involving differential gene expression and outstanding increment in the rate of protein degradation. Senescence-associated proteolysis enables the remobilization of nutrients, such as nitrogen (N), from senescent tissues to developing organs or seeds. In addition to the nutrient recycling function, senescence-associated proteases are also involved in the regulation of the senescence process. Nearly, all protease families have been associated with some aspects of plant senescence, and numerous reports addressing the new identification of senescence-associated proteases are published every year. Here, we provide an updated report with the most recent information published in the field, focusing on senescence-associated proteases presumably involved in N remobilization.
authors.affiliation: Instituto de Investigaciones en Biociencias Agrícolas y Ambientales, Universidad de Buenos Aires, Av. San Martín 4453, C1417DSE, Buenos Aires, Argentina. iroberts@agro.uba.ar
authors.forename: Irma N
authors.initials: IN
authors.lastname: Roberts
authors.forename: Carla
authors.initials: C
authors.lastname: Caputo
authors.forename: María Victoria
authors.initials: MV
authors.lastname: Criado
authors.forename: Christiane
authors.initials: C
authors.lastname: Funk
mesh_terms: D016923:Cell Death; D060365:Chloroplast Proteins / Q000378:metabolism; D002736:Chloroplasts / Q000201:enzymology; D004789:Enzyme Activation; D015971:Gene Expression Regulation, Enzymologic; D018506:Gene Expression Regulation, Plant; D017343:Genes, Plant; D009584:Nitrogen / Q000378:metabolism*; D010447:Peptide Hydrolases / Q000235:genetics / Q000378:metabolism*; D063245:Plant Development; D018515:Plant Leaves / Q000201:enzymology / Q000235:genetics; D010940:Plant Proteins / Q000235:genetics / Q000378:metabolism*; D010944:Plants / Q000201:enzymology* / Q000235:genetics; D046988:Proteasome Endopeptidase Complex / Q000378:metabolism; D059748:Proteolysis; D013312:Stress, Physiological; D013379:Substrate Specificity
chemical_list: D060365:Chloroplast Proteins; D010940:Plant Proteins; D010447:Peptide Hydrolases; D046988:Proteasome Endopeptidase Complex; C061553:ATP dependent 26S protease; D009584:Nitrogen