NEW INPS GENE DERIVED FROM PLANT BELONGING TO GENUS NICROTIANA

摘要

PROBLEM TO BE SOLVED: To obtain a new gene derived from genus Nicotiana having a function of giving a salt stress resistance to plants, and having a specific DNA sequence and encoding proteins having inositol-1-phosphate synthetase activity. ;SOLUTION: This new INPS gene derived from genus Nicotiana has a DNA sequence described in the formula or a sequence in which one or some DNA are substituted, deleted, inserted or added and encoding a protein practically having the inositol-1-phosphate synthetase(INPS) activity, having a function affording activity for water stress resistance to a plant, and capable of improving the salt stress resistance of the plants by controlling an expression of this gene. This DNA is obtained by extracting an entire RNA from a chloroplast system of Nicotiana paniculata, separating an mRNA and preparing a cDNA library using the mRNA as a template, and screening this in a differential screening method.;COPYRIGHT: (C)1999,JPO