Abstract
Cyclamen persicum Mill. is a widely grown ornamental species that is clonally propagated by somatic embryogenesis. To better understand the biology of somatic embryo development in C. persicum, detailed proteomic (two-dimensional gel electrophoresis) and mass spectrometric analyses of somatic embryos at globular, torpedo, and germinating stages of development, along with nonembryogenic callus and zygotic embryos, were conducted. Of ~460 proteins resolved in two-dimensional gels, 35 proteins were differentially expressed and could be reproducibly displayed across an isoelectric focusing range of 5 to 8. Among those proteins, five were constitutively expressed, 13 were upregulated, nine were downregulated, and eight were deemed as novel proteins during the torpedo stage. A total of 35 protein spots were analyzed by matrix-assisted laser desorption ionization time-of-flight mass spectrometry (MALDI-TOF-MS), and only four proteins were identified and these were available in public protein databases. The remaining protein spots were subsequently analyzed by MALDI-TOF-TOF-MS, and six proteins were then identified. These findings suggested that specific proteins are involved in the regulation of somatic embryogenesis.
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This work was supported by a grant from the Key Technologies Program of the office of Science and Technology of Shandong Province (2004GG4202010).
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An erratum to this article can be found at http://dx.doi.org/10.1007/s11105-010-0188-y
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Bian, F., Zheng, C., Qu, F. et al. Proteomic Analysis of Somatic Embryogenesis in Cyclamen persicum Mill. Plant Mol Biol Rep 28, 22–31 (2010). https://doi.org/10.1007/s11105-009-0104-5
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DOI: https://doi.org/10.1007/s11105-009-0104-5