Welcome to Chinese Agricultural Science Bulletin,

Chinese Agricultural Science Bulletin ›› 2016, Vol. 32 ›› Issue (19): 51-58.doi: 10.11924/j.issn.1000-6850.casb16010020

Special Issue: 生物技术 园艺

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Two-dimensional Electrophoresis System for Cucumber Female Flower ’s Corolla

  

  • Received:2016-01-06 Revised:2016-06-06 Accepted:2016-02-22 Online:2016-07-15 Published:2016-07-15

Abstract: An appropriate two- dimensional electrophoresis proteome analysis system of cucumber female flower’s corolla was established by optimizing the parameters including the protein extraction method, the pH gradient of IPG strip, isoelectric focusing conditions, sample application, and dyeing method. The result showed that phenol extraction method could obtain more protein with higher purity. Two- dimensional electrophoresis maps using 17 cm pH 4-7 IPG strip had no overlapping and protein points distributed evenly. Good protein points were obtained in the two-dimensional electrophoresis maps using optimized isoelectric focusing condition with added low-pressure desalination step and time. When the sample application increased to 300 μg, the number of protein points reached 400 and the low abundance protein points were also clear. More protein points were obtained in the two-dimensional electrophoresis maps using silver staining than colloid Coomassie brilliant blue staining. This study obtained clear background, high resolution, and high quality two-dimensional electrophoresis maps with protein points distributed evenly. It laid a foundation for the research on cucumber female flower’s corolla proteomics.

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