OsITL1 gene encoding an inositol 1,3,4-trisphosphate 5/6-kinase is a negative regulator of osmotic stress signaling.
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.
Niu
Xuguang
X
State Laboratory of Plant Physiology and Biochemistry, College of Biological Sciences, China Agricultural University, Beijing 100094, China.
Chen
Qijun
Q
Wang
Xuechen
X
D000222:Adaptation, Physiological / Q000187:drug effects; D000595:Amino Acid Sequence; D001483:Base Sequence; D018076:DNA, Complementary / Q000235:genetics / Q000302:isolation & purification; D018506:Gene Expression Regulation, Plant / Q000187:drug effects; D017343:Genes, Plant; D018525:Germination / Q000187:drug effects; D008969:Molecular Sequence Data; D012275:Oryza / Q000187:drug effects / Q000201:enzymology* / Q000235:genetics*; D009995:Osmosis / Q000187:drug effects; D017853:Phosphotransferases (Alcohol Group Acceptor) / Q000235:genetics*; D010940:Plant Proteins / Q000737:chemistry / Q000235:genetics / Q000378:metabolism; D030821:Plants, Genetically Modified; D036226:Seedlings / Q000187:drug effects / Q000201:enzymology / Q000235:genetics / Q000254:growth & development; D017422:Sequence Analysis, DNA; D015398:Signal Transduction / Q000187:drug effects; D012965:Sodium Chloride / Q000494:pharmacology; D014026:Nicotiana / Q000187:drug effects / Q000201:enzymology / Q000235:genetics
D018076:DNA, Complementary; D010940:Plant Proteins; D012965:Sodium Chloride; D017853:Phosphotransferases (Alcohol Group Acceptor); C056875:myo-inositol-trisphosphate 6-kinase