Enzymatic dynamics of microbial acid tolerance response (ATR) during the enhanced biohydrogen production process via anaerobic digestion

2012 ◽  
Vol 37 (14) ◽  
pp. 10655-10662 ◽  
Author(s):  
Zhenxing Huang ◽  
Xiaobin Yu ◽  
Hengfeng Miao ◽  
Hongyan Ren ◽  
Mingxing Zhao ◽  
...  
Keyword(s):  
Anaerobic Digestion ◽  
Production Process ◽  
Acid Tolerance ◽  
Biohydrogen Production ◽  
Acid Tolerance Response ◽  
Tolerance Response

Effect offurmutation on acid-tolerance response and in vivo virulence of avian septicemicEscherichia coli

2002 ◽  
Vol 48 (5) ◽  
pp. 458-462 ◽  
Author(s):  
Chengru Zhu ◽  
Musangu Ngeleka ◽  
Andrew A Potter ◽  
Brenda J Allan
Keyword(s):  
Parent Strain ◽  
Acid Tolerance ◽  
Wild Type ◽  
Acid Tolerance Response ◽  
E Coli ◽  
Regulator Protein ◽  
In The Wild ◽  
Tolerance Response ◽  
Wild Type Parent

The Fur (ferric uptake regulator) protein is a master regulator of iron metabolism in gram-negative bacteria. In the present study, the effect of a partial deletion of the fur gene on the acid-tolerance response and in vivo virulence of avian Escherichia coli was examined. The fur mutant was unable to trigger the acid-tolerance response as observed in the wild-type parent strain. However, the mutant was as virulent as the wild-type parent strain when tested in 1-day-old chickens by subcutaneous inoculation. These data indicate that the fur gene is involved in the acid-tolerance response but not involved in the virulence of E. coli, as detected by the ability to cause septicemia in our experimental infection.Key words: E. coli, fur, acid-tolerance response.

scholarly journals Adaptive acid tolerance response (ATR) in Aeromonas hydrophila

Microbiology ◽  
1994 ◽  
Vol 140 (7) ◽  
pp. 1731-1736 ◽  
Author(s):  
K. L. KAREM ◽  
J. W. FOSTER ◽  
A. K. BEJ
Keyword(s):  
Aeromonas Hydrophila ◽  
Acid Tolerance ◽  
Acid Tolerance Response ◽  
Tolerance Response
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