Subscribe Now Subscribe Today
Science Alert
 
FOLLOW US:     Facebook     Twitter
Blue
   
Curve Top
Pakistan Journal of Biological Sciences
  Year: 2005 | Volume: 8 | Issue: 2 | Page No.: 330-334
DOI: 10.3923/pjbs.2005.330.334
 
Facebook Twitter Digg Reddit Linkedin StumbleUpon E-mail
Effect of Sodium Chloride and Glycine Betaine on Growth and Pectate Lyase Production by Erwinia carotovora subsp. carotovora
Hoda H. El-Hendawy and Mohamed E. Osman

Abstract:
E. carotovora subsp. carotovora was grown in YS medium containing different NaCl concentrations. The growth was stimulated, reduced and totally inhibited in presence of 1.5, 3 and 6% NaCl, respectively. Addition of glycine betaine increased the growth in presence of NaCl, but not in its absence, in comparison with the control. Assays of extracellular and cell associated pectate lyase produced by E. carotovora in NaPP-YS medium containing 1.5 and 3% NaCl revealed that the extracellular PL activity was inhibited in presence of NaCl relative to the control. On the other hand, the level of the cell associated enzyme was increased with increasing NaCl concentration. When addition of glycine betaine to the growth medium, the activity of the extracellular PL was increased even in the control medium devoid of NaCl. Also, glycine betaine released the intracellular PL, this was evidenced by the reduction of the cell associated PL activity in its presence compared with the control (absence of glycine betaine).
PDF References Citation Report Citation
How to cite this article:

Hoda H. El-Hendawy and Mohamed E. Osman , 2005. Effect of Sodium Chloride and Glycine Betaine on Growth and Pectate Lyase Production by Erwinia carotovora subsp. carotovora. Pakistan Journal of Biological Sciences, 8: 330-334.

DOI: 10.3923/pjbs.2005.330.334

URL: https://scialert.net/abstract/?doi=pjbs.2005.330.334

 
COMMENT ON THIS PAPER
 
 
 

 

 
 
 
 
 
 
 
 
 

 
 
 
 
 
 
 
 
 
 
 
 

       

       

Curve Bottom