Patent ID: 8637735

Claim:
A method for obtaining a plant with increased drought resistance relative to a wild-type plant, comprising: (a) introducing at least one mutation or exogenous nucleic acid into the genome of one or more plant cells which results in reduced activity associated with SAL1 or a homologue thereof in said one or more plant cells, wherein said homologue has inositol polyphosphate 1-phosphatase activity and 3′(2′),5′-bisphosphate nucleotidase activity; (b) regenerating one or more plants from said one or more plant cells; and (c) selecting one or more plants that have increased drought resistance relative to a wild-type plant, with the proviso that said mutation is not selected from the following: a mutation in SEQ ID NO:1 resulting in a stop codon instead of a codon encoding a tryptophan residue at position 341 in SEQ ID NO:2; a guanine to adenine mutation at position 736 of SEQ ID NO:1; a mutation in SEQ ID NO:1 resulting in a glutamic acid to lysine substitution at position 126 of SEQ ID NO:2; a 6.7 kb T-DNA insertion between the fifth and sixth exons at position 1518 of SEQ ID NO:1; a T-DNA insertion between positions 734 and 735 of SEQ ID NO:1; a T-DNA insertion replacing nucleotides 735-745 of SEQ ID NO:1; a cytosine to thymine mutation at position 731 of SEQ ID NO:1; a mutation in SEQ ID NO:1 resulting in an alanine to valine substitution at position 124 of SEQ ID NO:2; a guanine to adenine mutation oat position 1226 of SEQ ID NO:1; and a mutation in SEQ ID NO:1 resulting in a glycine to aspartic acid substitution at posision 217 of SEQ ID NO: 2.