| 摘要 |
An isolated single stranded or double stranded nucleic acid molecule comprising a 5' regulatory sequence region from a dicotyledonous plant that is operable in a drought-inducible and ABA-, salt- and cold-insensitive manner, or its functional part, is new. An isolated single stranded or double stranded nucleic acid molecule comprising a 5' regulatory sequence region from a dicotyledonous plant that is operable in a drought-inducible and ABA-, salt- and cold-insensitive manner, or its functional part, is at least 50% homologous or is hybridizable to the regulatory region of a DS2 gene, or its functional part, of a species of the Solanaceae family, preferably of any of the Solanum or Nicotiana species, more preferably to a sequence of the regulatory region of LeDS2 of tomato or DS2 of Solanum tuberosum. Independent claims are included for the following: (1) transformation vector comprising the sequence cited above operably linked to a structural gene; (2) transgenic plant, or any of its reproducible part, comprising the above nucleic acid molecule; (3) plant propagation material prepared from or by using the plant in (2); and (4) gene expression in plants, comprising expression of the gene in a drought-inducible and ABA-, salt- and cold-insensitive manner, where the gene contains the above nucleic acid molecule encoding at least one regulatory gene region, and where the regulatory region is operably linked to the gene. |
