title: Systemic accumulation of specific mRNAs in response to wounding in poplar trees.
abstract: cDNAs for several transcripts that accumulate systemically in response to mechanical wounding in a hybrid poplar have been cloned. The corresponding mRNAs become abundant in the unwounded upper leaves of poplar trees whose lower leaves have been damaged. Two of the cDNA clones have been characterized by Northern and Southern blotting, and their nucleotide sequences have been determined. These clones, designated win6 (wound-inducible) and win8, are members of multigene families encoding proteins with a high degree of similarity to chitinases from bean, tobacco, and barley. This initial demonstration of a systemic response to wounding in trees provides an approach to study defense mechanisms in woody plants at the biochemical, physiological, and ecological levels.
authors: Department of Biochemistry, University of Washington, Seattle 98195.
authors: T J
authors: TJ
authors: Parsons
authors: H D
authors: HD
authors: Bradshaw
authors: M P
authors: MP
authors: Gordon
mesh_terms: D000595:Amino Acid Sequence; D003001:Cloning, Molecular; D004247:DNA / Q000235:genetics* / Q000302:isolation & purification; D005796:Genes; D008969:Molecular Sequence Data; D005810:Multigene Family; D018521:Plant Physiological Phenomena; D010940:Plant Proteins / Q000235:genetics*; D010944:Plants / Q000235:genetics*; D012333:RNA, Messenger / Q000096:biosynthesis / Q000235:genetics*; D012689:Sequence Homology, Nucleic Acid; D013045:Species Specificity; D014197:Trees
chemical_list: D010940:Plant Proteins; D012333:RNA, Messenger; D004247:DNA