AN ARABIDOPSIS TRANSCRIPT HOMOLOGOUS TO THE CARROT DC-1.2 CDNA IS INDUCED BY SEVERAL ENVIRONMENTAL STRESSES

A wound-inducible cDNA clone (AW? 34) was obtained from the cDNA libra ry of Arabidopsis thaliana by differential screening, The correspondin g gene expression was induced rapidly reaching a maximum level in appr oximately 1.5 h and then progressively reducing after wounding, The pr edicted amino acid sequence of AWI 34 has 57% homology with the DC 1.2 gene product, The DC 1.2 product is known to be temporarily induced d uring the initiation of somatic embryogenesis in carrot cells cultured in an auxin(2,4-D)-free medium, The AWI 34 gene was induced by an exo genous 2,4-D treatment on normal plant tissue, The AWI 34 gene was als o induced by other environmental stresses such as drought, high-salt, and low-temperature conditions.