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The Function of Inositol Phosphatases in Plant Tolerance to Abiotic Stress

1
Key Laboratory for Genetics Breeding and Multiple Utilization of Crops, Ministry of Education/College of Crop Science, Fujian Agriculture and Forestry University, Fuzhou 350002, China
2
Key Laboratory of Crop Ecology and Molecular Physiology (Fujian Agriculture and Forestry University), Fujian Province University, Fuzhou 350002, China
3
Putian Institute of Agricultural Sciences, Putian 351144, China
4
Rice Research Institute, Fujian Academy of Agricultural Sciences, Fuzhou 350018, China
*
Authors to whom correspondence should be addressed.
Int. J. Mol. Sci. 2019, 20(16), 3999; https://doi.org/10.3390/ijms20163999
Received: 30 June 2019 / Revised: 12 August 2019 / Accepted: 13 August 2019 / Published: 16 August 2019
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Abstract

Inositol signaling is believed to play a crucial role in various aspects of plant growth and adaptation. As an important component in biosynthesis and degradation of myo-inositol and its derivatives, inositol phosphatases could hydrolyze the phosphate of the inositol ring, thus affecting inositol signaling. Until now, more than 30 members of inositol phosphatases have been identified in plants, which are classified intofive families, including inositol polyphosphate 5-phosphatases (5PTases), suppressor of actin (SAC) phosphatases, SAL1 phosphatases, inositol monophosphatase (IMP), and phosphatase and tensin homologue deleted on chromosome 10 (PTEN)-related phosphatases. The current knowledge was revised here in relation to their substrates and function in response to abiotic stress. The potential mechanisms were also concluded with the focus on their activities of inositol phosphatases. The general working model might be that inositol phosphatases would degrade the Ins(1,4,5)P3 or phosphoinositides, subsequently resulting in altering Ca2+ release, abscisic acid (ABA) signaling, vesicle trafficking or other cellular processes. View Full-Text
Keywords: inositol; phosphatidylinositol; phosphatase; stress; signaling pathway inositol; phosphatidylinositol; phosphatase; stress; signaling pathway
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Jia, Q.; Kong, D.; Li, Q.; Sun, S.; Song, J.; Zhu, Y.; Liang, K.; Ke, Q.; Lin, W.; Huang, J. The Function of Inositol Phosphatases in Plant Tolerance to Abiotic Stress. Int. J. Mol. Sci. 2019, 20, 3999.

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