The protoplasts from Monascus purpureus 9903A were transformed with hygromycin B resistance plasmid pMP-Hygro.The transformation medium contained 50 mmol/L Ca2+ and 40%PEG4000 with 1.0mol/L sorbitol an osmotic stabilizer.The protoplasts concentration is1×108 /mL and the quantity of vectors is 1 μg/100μL protoplasts.In this study,the average transformation ratio is 160 colonies/μg DNA.
XIA Yong-Jun, NIU Dan-Dan, WANG Zheng-Xiang, XU Gan-Rong. Influencing Factors on the Efficiency of Gene Transformation System of the Monascus purpureus 9903A[J]. Microbiology China, 2007, 34(2): 0279-0282
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