title: iTRAQ-based quantitative proteomic analysis of wheat roots in response to salt stress.
abstract: Salinity is a major abiotic stress that affects plant growth and development. Plant roots are the sites of salt uptake. Here, an isobaric tag for a relative and absolute quantitation based proteomic technique was employed to identify the differentially expressed proteins (DEPs) from seedling roots of the salt-tolerant genotype Han 12 and the salt-sensitive genotype Jimai 19 in response to salt treatment. A total of 121 NaCl-responsive DEPs were observed in Han 12 and Jimai 19. The main DEPs were ubiquitination-related proteins, transcription factors, pathogen-related proteins, membrane intrinsic protein transporters and antioxidant enzymes, which may work together to obtain cellular homeostasis in roots and to determine the overall salt tolerance of different wheat varieties in response to salt stress. Functional analysis of three salt-responsive proteins was performed in transgenic plants as a case study to confirm the salt-related functions of the detected proteins. Taken together, the results of this study may be helpful in further elucidating salt tolerance mechanisms in wheat.
authors.affiliation: Institute of Crop Science, National Key Facility for Crop Gene Resources and Genetic Improvement, Chinese Academy of Agricultural Sciences, Beijing, P. R., China.
authors.forename: Qiyan
authors.initials: Q
authors.lastname: Jiang
authors.affiliation: College of Life Sciences, Agriculture University of Hebei, Baoding, P. R., China.
authors.forename: Xiaojuan
authors.initials: X
authors.lastname: Li
authors.affiliation: Institute of Crop Science, National Key Facility for Crop Gene Resources and Genetic Improvement, Chinese Academy of Agricultural Sciences, Beijing, P. R., China.
authors.forename: Fengjuan
authors.initials: F
authors.lastname: Niu
authors.affiliation: Institute of Crop Science, National Key Facility for Crop Gene Resources and Genetic Improvement, Chinese Academy of Agricultural Sciences, Beijing, P. R., China.
authors.forename: Xianjun
authors.initials: X
authors.lastname: Sun
authors.affiliation: Institute of Crop Science, National Key Facility for Crop Gene Resources and Genetic Improvement, Chinese Academy of Agricultural Sciences, Beijing, P. R., China.
authors.forename: Zheng
authors.initials: Z
authors.lastname: Hu
authors.affiliation: Institute of Crop Science, National Key Facility for Crop Gene Resources and Genetic Improvement, Chinese Academy of Agricultural Sciences, Beijing, P. R., China.
authors.forename: Hui
authors.initials: H
authors.lastname: Zhang
mesh_terms: D017360:Arabidopsis / Q000235:genetics; D018506:Gene Expression Regulation, Plant; D010940:Plant Proteins / Q000032:analysis / Q000235:genetics / Q000378:metabolism*; D018517:Plant Roots / Q000378:metabolism*; D030821:Plants, Genetically Modified; D040901:Proteomics / Q000379:methods*; D054712:Salinity; D055049:Salt Tolerance; D013025:Glycine max / Q000235:genetics; D013312:Stress, Physiological; D014908:Triticum / Q000187:drug effects / Q000235:genetics / Q000378:metabolism*
chemical_list: D010940:Plant Proteins
keywords: Proteomics; Root; Salt; Wheat; iTRAQ