Journal
BIOTECHNOLOGY LETTERS
Volume 30, Issue 9, Pages 1687-1692Publisher
SPRINGER
DOI: 10.1007/s10529-008-9730-5
Keywords
abiotic stress tolerance; inositol 1,3,4-trisphosphate 5/6-kinase; Oryza sativa; transgenic tobacco
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Funding
- National Key Basic Research Special Funds, China [G1999011700]
- Young Teacher's Research Foundation of Shenyang Agricultural University, China
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The expression of the gene OsITL1 coding for the inositol 1,3,4-trisphosphate 5/6-kinase protein was induced by 200 mM NaCl or dehydration. The expression of OsITL1 in response to NaCl and dehydration suggests the possible functions of OsITL1 in osmotic stress responses; however, physiological tests indicate that the expression of OsITL1 in tobacco decreases tolerance to NaCl during germination and seedling development. This result was consistent with that obtained on treatment of mature tobacco seedlings with NaCl (200 mM), suggesting that OsITL1 inversely regulates plant responses to osmotic stress.
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