Growth Rate Related Concentration Changes of the Starvation Response Regulators σS and ppGpp in Glucose-Limited Fed-Batch and Continuous Cultures of Escherichia coli

1999 ◽  
Vol 15 (1) ◽  
pp. 123-129 ◽  
Author(s):  
A. Teich ◽  
S. Meyer ◽  
H.Y. Lin ◽  
L. Andersson ◽  
S.-O. Enfors ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Growth Rate ◽  
Response Regulators ◽  
Fed Batch ◽  
Continuous Cultures ◽  
Starvation Response ◽  
Concentration Changes

Influence of specific growth rate over the secretory expression of recombinant potato carboxypeptidase inhibitor in fed-batch cultures of Escherichia coli

2010 ◽  
Vol 45 (8) ◽  
pp. 1334-1341 ◽  
Author(s):  
Juan-Miguel Puertas ◽  
Jordi Ruiz ◽  
Mónica Rodríguez de la Vega ◽  
Julia Lorenzo ◽  
Glòria Caminal ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Growth Rate ◽  
Specific Growth Rate ◽  
Specific Growth ◽  
Fed Batch ◽  
Secretory Expression ◽  
Batch Cultures ◽  
Carboxypeptidase Inhibitor

Competition between strains of Escherichia coli with and without plasmid RP4 during chemostat growth

1991 ◽  
Vol 37 (7) ◽  
pp. 509-512 ◽  
Author(s):  
Zuhair Numan ◽  
W. A. Venables ◽  
J. W. T. Wimpenny
Keyword(s):  
Escherichia Coli ◽  
Growth Rate ◽  
Key Words ◽  
Growth Kinetic ◽  
Initial Period ◽  
Kinetic Constants ◽  
Continuous Cultures ◽  
The Difference ◽  
Selection Of ◽  
Period Of Oscillation

Escherichia coli strains J53(nal) and J53(RP4) were grown together in glucose-limited continuous cultures. Based on the measured growth kinetic constants of the two strains, take-over of the cultures by J53(RP4) was predicted. However, in practice, an initial period of predominance by J53(RP4) was always followed by a prolonged period in which relative numerical proportions of the two strains oscillated widely. This period of oscillation was removed or greatly reduced when the difference between the predicted growth-rate potentials of the two strains was increased by selection of a chemostat-adapted variant of J53(RP4). Key words: competition, chemostat, plasmid, Escherichia coli.

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