scholarly journals Interspecies bacterial communication produces a delicate balance between Vibrio cholerae and the chironomid egg mass microbiome

2021 ◽  
Vol 30 (7) ◽  
pp. 1571-1573
Author(s):  
Jonathan D. Oliver ◽  
Nicholas M. Fountain‐Jones
Keyword(s):  
Vibrio Cholerae ◽  
Egg Mass ◽  
Bacterial Communication ◽  
Delicate Balance

scholarly journals Vibrio cholerae Hemagglutinin/Protease Degrades Chironomid Egg Masses

2003 ◽  
Vol 69 (7) ◽  
pp. 4200-4204 ◽  
Author(s):  
Malka Halpern ◽  
Hanan Gancz ◽  
Meir Broza ◽  
Yechezkel Kashi
Keyword(s):  
Vibrio Cholerae ◽  
Diarrheal Disease ◽  
Living Organism ◽  
Egg Mass ◽  
Free Living ◽  
Egg Masses ◽  
Natural Reservoir ◽  
Gelatinous Matrix ◽  
Extracellular Factor

ABSTRACT Cholera is a severe diarrheal disease caused by specific serogroups of Vibrio cholerae that are pathogenic to humans. The disease does not persist in a chronic state in humans or animals. The pathogen is naturally present as a free-living organism in the environment. Recently, it was suggested that egg masses of the nonbiting midge Chironomus sp. (Diptera) harbor and serve as a nutritive source for V. cholerae, thereby providing a natural reservoir for the organism. Here we report that V. cholerae O9, O1, and O139 supernatants lysed the gelatinous matrix of the chironomid egg mass and inhibited eggs from hatching. The extracellular factor responsible for the degradation of chironomid egg masses (egg mass degrading factor) was purified from V. cholerae O9 and O139 and was identified as the major secreted hemagglutinin/protease (HA/P) of V. cholerae. The substrate in the egg mass was characterized as a glycoprotein. These findings show that HA/P plays an important role in the interaction of V. cholerae and chironomid egg masses.

Assisting Patients, Staying Safe: A Delicate Balance

2006 ◽  
Vol 34 (10) ◽  
pp. 1-72 ◽  
Author(s):  
MICHELE G. SULLIVAN
Keyword(s):  
Delicate Balance

In vivo Production of Soluble Inorganic Pyrophosphatases in Two Strains of Vibrio cholerae

1970 ◽  
Vol 24 (1) ◽  
pp. 38-41
Author(s):  
Taslima Taher Lina ◽  
Mohammad Ilias
Keyword(s):  
Vibrio Cholerae ◽  
Specific Activity ◽  
Experimental Conditions ◽  
Environmental Strain ◽  
Cell Extracts ◽  
Atcc Strain ◽  
The Family ◽  
Effects Of Ph ◽  
Vibrio Cholerae O1

The in vivo production of soluble inorganic pyrophosphatases (PPases) was investigated in two strains, namely, Vibrio cholerae EM 004 (environmental strain) and Vibrio cholerae O1 757 (ATCC strain). V. cholerae is known to contain both family I and family II PPase coding sequences. The production of family I and family II PPases were determined by measuring the enzyme activity in cell extracts. The effects of pH, temperature, salinity of the growth medium on the production of soluble PPases were studied. In case of family I PPase, V. cholerae EM 004 gave the highest specific activity at pH 9.0, with 2% NaCl + 0.011% NaF and at 37°C. The strain V. cholerae O1 757 gave the highest specific activity at pH 9.0, with media containing 0% NaCl and at 37°C. On the other hand, under all the conditions family II PPase did not give any significant specific activity, suggesting that the family II PPase was not produced in vivo in either strains of V. cholerae under different experimental conditions. Keywords: Vibrio cholerae, Pyrophosphatases (PPases), Specific activityDOI: http://dx.doi.org/10.3329/bjm.v24i1.1235 Bangladesh J Microbiol, Volume 24, Number 1, June 2007, pp 38-41

Exemplar Abstract for Vibrio cholerae Pacini 1854 (Approved Lists 1980).

2003 ◽  
Author(s):  
Charles Thomas Parker ◽  
Dorothea Taylor ◽  
George M Garrity
Keyword(s):  
Vibrio Cholerae

Exemplar Abstract for Vibrio cholerae Pacini 1854 (Approved Lists 1980).

2003 ◽  
Author(s):  
Charles Thomas Parker ◽  
Dorothea Taylor ◽  
George M Garrity
Keyword(s):  
Vibrio Cholerae
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