title: Identification of candidate genes associated with senescence in durum wheat (Triticum turgidum subsp. durum) using cDNA-AFLP.
abstract: Senescence is an integrated response of plants to various internal (developmental) and external (environmental) signals. It is a highly regulated process leading eventually to the death of cells, single organs such as leaves, or even whole plants. In cereals, which are monocarpic plants, senescence represents the final stage of development. In order to study senescence in durum wheat (Triticum turgidum subsp. durum), a cDNA-AFLP analysis was performed. The transcription profiles of plants at different developmental stages (flowering and senescent) were compared. About 2000 cDNA fragments, ranging in size from 160 to 1900 bp, were reproducibly detected. This allowed the identification of 57 differentially expressed cDNAs corresponding to genes belonging to different functional categories related to cellular metabolism, transcription, maintenance of DNA structure, transport and signal transduction. This paper reports the identification of novel durum wheat candidate genes involved in the senescence process, and provides new information about the senescence programme of this important crop species.
authors.affiliation: Di.S.Te.B.A. Università del Salento, via prov.le Monteroni, 73100 Lecce, Italy.
authors.forename: Patrizia
authors.initials: P
authors.lastname: Rampino
authors.forename: Stefano
authors.initials: S
authors.lastname: Pataleo
authors.forename: Vittorio
authors.initials: V
authors.lastname: Falco
authors.forename: Giovanni
authors.initials: G
authors.lastname: Mita
authors.forename: Carla
authors.initials: C
authors.lastname: Perrotta
mesh_terms: D054458:Amplified Fragment Length Polymorphism Analysis / Q000379:methods*; D002734:Chlorophyll / Q000378:metabolism; D018076:DNA, Complementary / Q000235:genetics*; D018506:Gene Expression Regulation, Plant; D056726:Genetic Association Studies; D018515:Plant Leaves / Q000235:genetics / Q000254:growth & development; D010940:Plant Proteins / Q000235:genetics / Q000378:metabolism; D012333:RNA, Messenger / Q000235:genetics / Q000378:metabolism; D020133:Reverse Transcriptase Polymerase Chain Reaction; D014908:Triticum / Q000235:genetics* / Q000254:growth & development*
chemical_list: D018076:DNA, Complementary; D010940:Plant Proteins; D012333:RNA, Messenger; D002734:Chlorophyll