Quantitative Phosphoproteomic Analysis Provides Insight into the Response to Short-Term Drought Stress in Ammopiptanthus mongolicus Roots

被引:17
|
作者
Sun, Huigai [1 ]
Xia, Bolin [1 ]
Wang, Xue [1 ]
Gao, Fei [1 ]
Zhou, Yijun [1 ]
机构
[1] Minzu Univ China, Coll Life & Environm Sci, Beijing 100081, Peoples R China
基金
中国国家自然科学基金;
关键词
phosphoprotein; phosphoproteomics; iTRAQ (Isobaric tags for relative and absolute quantitation); drought stress; Ammopiptanthus mongolicus; PROTEIN-PHOSPHORYLATION ANALYSIS; ARABIDOPSIS-THALIANA; GENE-EXPRESSION; ABSCISIC-ACID; MAIZE LEAVES; IDENTIFICATION; KINASE; AQUAPORINS; INTERACTS; DYNAMICS;
D O I
10.3390/ijms18102158
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
Drought is one of the major abiotic stresses that negatively affects plant growth and development. Ammopiptanthus mongolicus is an ecologically important shrub in the mid-Asia desert region and used as a model for abiotic tolerance research in trees. Protein phosphorylation participates in the regulation of various biological processes, however, phosphorylation events associated with drought stress signaling and response in plants is still limited. Here, we conducted a quantitative phosphoproteomic analysis of the response of A. mongolicus roots to short-term drought stress. Data are available via the iProx database with project ID IPX0000971000. In total, 7841 phosphorylation sites were found from the 2019 identified phosphopeptides, corresponding to 1060 phosphoproteins. Drought stress results in significant changes in the abundance of 103 phosphopeptides, corresponding to 90 differentially-phosphorylated phosphoproteins (DPPs). Motif-x analysis identified two motifs, including [pSP] and [RXXpS], from these DPPs. Functional enrichment and protein-protein interaction analysis showed that the DPPs were mainly involved in signal transduction and transcriptional regulation, osmotic adjustment, stress response and defense, RNA splicing and transport, protein synthesis, folding and degradation, and epigenetic regulation. These drought-corresponsive phosphoproteins, and the related signaling and metabolic pathways probably play important roles in drought stress signaling and response in A. mongolicus roots. Our results provide new information for understanding the molecular mechanism of the abiotic stress response in plants at the posttranslational level.
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页数:16
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