Salt stress induced proteome and transcriptome changes in sugar beet monosomic addition line M14

• Published in: Journal of plant physiology 2012-06, Vol.169 (9), p.839-850
• Main Authors: Yang, Le, Ma, Chunquan, Wang, Linlin, Chen, Sixue, Li, Haiying
• Format: Article
• Language: English
• Subjects: Beta vulgaris - chemistry; Beta vulgaris - genetics; Biological and medical sciences; cDNA libraries; complementary DNA; Degradation; Environmental Exposure; Fundamental and applied biological sciences. Psychology; gel electrophoresis; gels; Gene Expression Regulation, Plant - drug effects; Genes; Genes, Plant; leaf protein; Leaves; mass spectrometry; Monosomy; phenotype; Photosynthesis; Plant Leaves - chemistry; Plant physiology and development; Plant Proteins - metabolism; Plant Roots - chemistry; protein degradation; protein folding; protein synthesis; Proteins; proteome; Proteome - drug effects; Proteome - metabolism; Proteomics; Roots; Salinity; salt stress; Salt tolerance; Salt-Tolerance - genetics; sodium chloride; Sodium Chloride - analysis; Sodium Chloride - metabolism; Sodium Chloride - toxicity; stress tolerance; Stress, Physiological; Stresses; sugar beet; Sugar beet monosomic addition line M14 (M14); Sugar beets; suppression subtractive hybridization; Suppression subtractive hybridization (SSH); transcriptome; Transcriptome - drug effects; transcriptomics; Two-dimensional difference gel electrophoresis (2D-DIGE); unigenes
• ISSN: 0176-1617; 1618-1328
• DOI: 10.1016/j.jplph.2012.01.023

Sugar beet monosomic addition line M14 displays interesting phenotypes such as apomixis and salt stress tolerance. Here we reported proteomic and transcriptomic analysis of M14 leaves and roots under 500mM NaCl treatment for seven days. Proteins from control and treated samples were extracted and separated using two-dimensional difference gel electrophoresis (2D-DIGE). A total of 40 protein spots from leaf gels and 36 protein spots from root gels exhibited significant changes. Using mass spectrometry and database searching, 38 unique proteins in leaves and 29 unique proteins in roots were identified. The proteins included those involved in metabolism, protein folding, photosynthesis, and protein degradation. In addition, cDNA libraries of differentially expressed genes were constructed using suppression subtractive hybridization (SSH). Fifty-eight unigenes including 14 singletons and 44 contigs were obtained. Some salt-responsive genes were identified to function in metabolism, photosynthesis, stress and defense, energy, protein synthesis and protein degradation. This research has revealed candidate genes and proteins for detailed functional characterization, and set the stage for further investigation of the salt tolerance mechanisms in sugar beet.