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Reference: Lu SY, et al. (2010) Molecular cloning of a cotton phosphatase gene and its functional characterization. Biochemistry (Mosc) 75(1):85-94

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Abstract

In this study, we report isolation of a phosphatase gene designated GhHL1 from cotton and its functional characterization. GhHL1 transcripts were detected in all cotton tissues examined. Southern blotting analysis indicated that it exists in multiple-copies. Biochemical analysis showed that GhHL1 was Mg2+-dependent and cation-sensitive. Purified recombinant GhHL1 protein dephosphorylated both 3',5'-bisphosphate nucleotide and inositol 1,4-bisphosphate, demonstrating dual 3',5'-bisphosphate nucleotidase and inositol polyphosphate 1-phosphatase activities. Overexpression of GhHL1 complemented yeast hal2 mutant and enhanced yeast growth under elevated NaCl or LiCl, showing a role in salt tolerance associated with ionic stress response. Taken together, these results show that GhHL1 is a functional and good candidate gene, which might be used to improve salt tolerance in plants.

Reference Type
Journal Article
Authors
Lu SY, Zhao GR, Wu AM, Jenks MA, Zhang S, Liu JY
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