Protein-based tools for identifying plant varieties have developed rapidly, parallel to the evolution of gene-based technologies. In this study, we used ProteinChip technology to analyze the protein profiles of four different varieties of grapevines. This technique incorporates surface-enhanced laser desorption/ionization with mass spectrometry for rapid profiling and a comparison of protein profiles. Results revealed that several protein signals were differentially expressed in the varieties used, suggesting that this technology could potentially be used to identify cultivar-specific biomarkers in grapevines.
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