Differential regulation of proteins and phosphoproteins in rice under drought stress

Drought is the largest constraint on rice production in Asia. Protein phosphorylation has been recognized as an important mechanism for environmental stress signaling. However, the differential expression of proteins and phosphoproteins induced by drought in rice is still largely unknown. In this pa...

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Bibliographic Details
Published inBiochemical and biophysical research communications Vol. 379; no. 1; pp. 133 - 138
Main Authors Ke, Yuqin, Han, Guoqiang, He, Huaqin, Li, Jiaxu
Format Journal Article
LanguageEnglish
Published United States Elsevier Inc 30.01.2009
Subjects
Drought stress
Droughts
Gene Expression Regulation, Plant
Oryza - genetics
Oryza - metabolism
Oryza - physiology
Peptide Fragments - chemistry
Phosphoproteins
Phosphoproteins - biosynthesis
Phosphoproteins - chemistry
Phosphoproteins - genetics
Phosphorylation
Proteomics
Rice
Stress, Physiological - genetics
Trypsin - chemistry
Drought stress
Phosphoproteins
Proteomics
Rice
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Summary:Drought is the largest constraint on rice production in Asia. Protein phosphorylation has been recognized as an important mechanism for environmental stress signaling. However, the differential expression of proteins and phosphoproteins induced by drought in rice is still largely unknown. In this paper, we report the identification of differentially expressed proteins and phosphoproteins induced by drought in rice using proteomic approaches. Three drought-responsive proteins were identified. Late embryogenesis abundant (LEA)-like protein and chloroplast Cu–Zn superoxide dismutase (SOD) were up-regulated by drought whereas Rieske Fe–S precursor protein was down-regulated. Ten drought-responsive phosphoproteins were identified: NAD-malate dehydrogenase, OSJNBa0084K20.14 protein, abscisic acid- and stress-inducible protein, ribosomal protein, drought-induced S-like ribonuclease, ethylene-inducible protein, guanine nucleotide-binding protein beta subunit-like protein, r40c1 protein, OSJNBb0039L24.13 protein and germin-like protein 1. Seven of these phosphoproteins have not previously been reported to be involved in rice drought stress. These results provide new insight into the regulatory mechanism of drought-induced proteins and implicate several previously unrecognized proteins in response to drought stress.
Bibliography:ObjectType-Article-1
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ISSN:0006-291X
1090-2104
DOI:10.1016/j.bbrc.2008.12.067