Biotechnology Bulletin ›› 2016, Vol. 32 ›› Issue (7): 126-130.doi: 10.13560/j.cnki.biotech.bull.1985.2016.07.019

• Orignal Article • Previous Articles     Next Articles

Conditions for Protoplast Preparation and Regeneration by Sphingomonas sp. ATCC 31555

ZHOU Ming-ming1, LI Xiao-yan2, REN Meng-nan1, CHENG Ke-meng1, HUANG Hai-dong1   

  1. 1. College of Agronomy and Resources & Environment,Tianjin Agricultural University,Tianjin 300384;
    2. College of Food Science and Biotechnology,Tianjin Agricultural University,Tianjin 300384
  • Received:2015-11-19 Online:2016-07-25 Published:2016-07-25

Abstract: The effects of EDTA pretreatment,cell age and the concentration,temperature and work time of enzymolysis on protoplast formation and regeneration by Sphingomonas sp. ATCC 31555 were studied. The results showed that the formation rate and regeneration rate reached 97.3% and 33.9% respectively,when the cells cultivated 10 h,pretreated by 12 mmol/L EDTA,using 45 μg/mL of lysozyme,enzymolysis at 28℃ for 25 min. The result of this paper provides a reference for breeding fine microbial strains by protoplast fusion and genome shuffling.

Key words: Sphingomonas, welan gum, protoplast, regeneration