High-Yield Laccase-Producing Strains Constructed by Protoplast Fusion Between Bacterium and Fungus

Autor: Wenli Yin, Lihong Zhao, Lele Wang
Rok vydání: 2015
Předmět:
Zdroj: The Open Biotechnology Journal. 9:221-224
ISSN: 1874-0707
DOI: 10.2174/1874070701509010221
Popis: This study is based on the construction of high-yield laccase-producing fusant achieved by inter-kingdom protoplast fusion between Pleurotus ostreatus and Escherichia coli. The optimized protoplasts formation and regeneration conditions were demonstrated with the presence of 1.5% cellulase +1.0% snailase and 0.6M mannitol at 30°C for 3h. The fusants were screened for different characteristics between two parental strains and further identified by laccase activity, offering one of the genetically stable fusants, Strain F. The fusant F produced the highest yield of laccase, being about 22% higher than that of the parental strain. The results suggest that the protoplast fusion technique can be considered as a promising technique for the control of environmental pollution.
Databáze: OpenAIRE