生化科技學系Kuo, C.-Y.C.-Y.KuoCHING-TSAN HUANG2008-02-262018-07-062008-02-262018-07-062008-020167-7012http://ntur.lib.ntu.edu.tw//handle/246246/64142A simple and reliable mushroom transformation procedure based on electroporation of basidiospores or mycelial fragments was developed. This method eliminated the problem of protoplast preparation, the transformation efficiency were 30-150 transformants per mug DNA and the hygromycin resistant marker gene and gus were expressed in Lentinula edodes successfully. No false positive antibiotic-resistant cultures were detected by PCR amplification and the beta-glucuronidase (GUS) expression was maintained stable during mitotic cell division without selection pressure for more than 6 months. Southern analysis of transformants indicated the integration of gene might occur by non-homologous recombination. Using the glyceraldehyde-3-phosphate dehydrogenase (gpd) promoter with the first intron of gpd gene, the average GUS activity in L. edodes reached 144.6+/-3.9 U mg(-1) soluble protein, while only 30.1+/-0.7 U mg(-1) soluble protein was detected for those without the intron. The percentage of GUS in total soluble protein was 5.67x10(-4) (0.06%) for the transformant with the highest GUS activity. This rapid and convenient electroporation procedure offers a new approach for the genetic manipulation and tool to tag genes of important edible mushroom species.689293 bytesapplication/pdfen-USElectroporationβ-glucuronidaseHeterologous expressionLentinula edodes[SDGs]SDG1510.1016/j.mimet.2007.11.0062-s2.0-38049049926http://ntur.lib.ntu.edu.tw/bitstream/246246/64142/1/08JMM72(111).pdf