Proteomic Identification of Differentially Expressed Proteins in the Ligon lintless Mutant of Upland Cotton (Gossypium hirsutum L.)
文献类型: 外文期刊
第一作者: Zhao, Pi-Ming
作者: Zhao, Pi-Ming;Wang, Li-Li;Han, Li-Bo;Wang, Juan;Yao, Yuan;Wang, Hai-Yun;Luo, Yuan-Ming;Xia, Gui-Xian;Zhao, Pi-Ming;Wang, Li-Li;Han, Li-Bo;Wang, Juan;Yao, Yuan;Wang, Hai-Yun;Xia, Gui-Xian;Zhao, Pi-Ming;Wang, Li-Li;Han, Li-Bo;Wang, Juan;Yao, Yuan;Wang, Hai-Yun;Xia, Gui-Xian;Du, Xiong-Ming
作者机构:
关键词: proteomics;cotton fiber;Ligon mutant;cytoskeleton;cell elongation
期刊名称:JOURNAL OF PROTEOME RESEARCH ( 影响因子:4.466; 五年影响因子:4.352 )
ISSN:
年卷期:
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收录情况: SCI
摘要: Cotton fiber is an ideal model for studying plant cell elongation. To date, the underlying mechanisms controlling fiber elongation remain unclear due to their high complexity. In this study, a comparative proteomic analysis between a short-lint fiber mutant (Ligon lintless, Li-1) and its wild-type was performed to identify fiber elongation-related proteins. By 2-DE combined with local EST data base-assisted MS/MS analysis, 81 differentially expressed proteins assigned to different functional categories were identified from Li-1 fibers, of which 54 were down-regulated and 27 were up-regulated. Several novel aspects regarding cotton fiber elongation can be illustrated from our data. First, over half of the down-regulated proteins were newly identified at the protein level, which is mainly involved in protein folding and stabilization, nucleocytoplasmic transport, signal transduction, and vesicular-mediated transport. Second, a number of cytoskeleton-related proteins showed a remarkable decrease in protein abundance in the Li-1 fibers. Accordingly, the architecture of actin cytoskeleton was severely deformed and the micrbtubule organization was moderately altered, accompanied with dramatic disruption of vesicle trafficking. Third, the expression of several proteins involved in unfolded protein response (UPR) was activated in Li-1 fibers, indicating that the deficiency of fiber cell elongation was related to ER stress. Collectively, these findings significantly advanced our understanding of the mechanisms associated with cotton fiber elongation.
分类号: Q7
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