A family of wound-induced genes in Populus shares common features with genes encoding vegetative storage proteins

Two wound-inducible cDNAs from poplar leaves show sequence identity to vegetative storage proteins (VSP) that accumulate seasonally in poplar bark tissues. We have compared the genomic organization, cDNA sequences and expression of the genes encoding the wound-inducible cDNAs (win4) with that of a b...

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Bibliographic Details
Published in:Plant molecular biology 1993-10, Vol.23 (1), p.135-143
Main Authors: Davis, J.M. (Florida Univ., Gainesville, FL (USA). Inst. of Food and Agricultural Sciences), Egelkrout, E.E, Coleman, G.D, Chen, T.H.H, Haissig, B.E, Riemenschneider, D.E, Gordon, M.P
Format: Article
Language:English
Subjects:
ADN
ALMACENAMIENTO
Amino Acid Sequence
Base Sequence
Biological and medical sciences
Blotting, Northern
DNA
FEUILLE
Fundamental and applied biological sciences. Psychology
GENE
Gene Expression Regulation
GENES
Genes, Plant
Genes. Genome
Genetic Linkage
HERIDAS
HOJAS
LEAVES
Molecular and cellular biology
Molecular genetics
Molecular Sequence Data
Multigene Family
NUCLEOTIDE SEQUENCE
PLAIE
Plant Proteins - biosynthesis
Plant Proteins - chemistry
Plant Proteins - genetics
Polymorphism, Restriction Fragment Length
POPULUS
Populus deltoides
Populus trichocarpa
PROTEINAS
PROTEINE
PROTEINS
SECUENCIA NUCLEICA
SEQUENCE NUCLEIQUE
STOCKAGE
STORAGE
Trees - genetics
WOUNDS
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Summary:Two wound-inducible cDNAs from poplar leaves show sequence identity to vegetative storage proteins (VSP) that accumulate seasonally in poplar bark tissues. We have compared the genomic organization, cDNA sequences and expression of the genes encoding the wound-inducible cDNAs (win4) with that of a bark VSP (called bark storage protein, or BSP). There appear to be several win4 genes in the poplar genome which segregate as a single locus and are therefore likely to be clustered. The same is true of the BSP genes. The win4 locus is linked (map distance of 5 cM) to the BSP locus, consistent with a common evolutionary origin of the genes. A near full-length win4 cDNA shows 75% sequence identity to BSP cDNAs. Both win4 and BSP are systemically wound-inducible; win4 transcripts accumulate in leaves and stems, whereas BSP transcripts accumulate almost exclusively in stems. A phloem transport-dependent signaling mechanism appears to be involved in systemic win4 expression after wounding. In contrast to BSP gene expression, win4 genes are not expressed in response to short day conditions. The data indicate win4 and BSP genes are differentially regulated, and their products may play important roles in the storage and reallocation of nitrogen in perennial plants.
ISSN:0167-4412
1573-5028
DOI:10.1007/BF00021426