Bacterial growth phase influences methylmercury production by the sulfate-reducing bacterium Desulfovibrio desulfuricans ND132

2011 ◽  
Vol 409 (19) ◽  
pp. 3943-3948 ◽  
Author(s):  
Abir Biswas ◽  
Scott C. Brooks ◽  
Carrie L. Miller ◽  
Jennifer J. Mosher ◽  
Xiangping L. Yin ◽  
...  
1996 ◽  
Vol 18 (5) ◽  
pp. 358-365 ◽  
Author(s):  
Michael J. Cooney ◽  
Edouard Roschi ◽  
Ian W. Marison ◽  
Ch. Comminellis ◽  
Urs von Stockar

2018 ◽  
Vol 482 ◽  
pp. 61-71 ◽  
Author(s):  
Janice P.L. Kenney ◽  
Timothy Ellis ◽  
Felix S. Nicol ◽  
Alexandra E. Porter ◽  
Dominik J. Weiss

1994 ◽  
Vol 353 ◽  
Author(s):  
S. Fukunaga ◽  
H. Yoshikawa ◽  
K. Fujiki ◽  
H. Asano

AbstractThe active range ofDesulfovibrio desulfuricans. a species of sulfate-reducing bacteria, was examined in terms of pH and Eh using a fermenter at controlled pH and Eh. Such research is important because sulfate-reducing bacteria (SRB) are thought to exist underground at depths equal to those of supposed repositories for high-level radioactive wastes and to be capable of inducing corrosion of the metals used in containment vessels.SRB activity was estimated at 35°C, with lactate as an electron donor, at a pH range from 7 to 11 and Eh range from 0 to -380 mV. Activity increased as pH approached neutral and Eh declined. The upper pH limit for activity was between 9.9 and 10.3, at Eh of -360 to -384 mV. The upper Eh limit for activity was between -68 and -3 mV, at pH 7.1. These results show that SRB can be made active at higher pH by decreasing Eh, and that the higher pH levels of 8 to 10 produced by use of the buffer material bentonite does not suppress SRB completely.A chart was obtained showing the active range ofDesulfovibrio desulfuricansin terms of pH and Eh. Such charts can be used to estimate the viability of SRB and other microorganisms when the environmental conditions of a repository are specified.


2015 ◽  
Vol 2015 ◽  
pp. 1-4 ◽  
Author(s):  
Saho Koyano ◽  
Keita Tatsuno ◽  
Mitsuhiro Okazaki ◽  
Kiyofumi Ohkusu ◽  
Takashi Sasaki ◽  
...  

Desulfovibriospp. are gram-negative, sulfate-reducing, and anaerobic bacteria found in the digestive tract of humans. BecauseDesulfovibriospp. are infrequent causative agents of infectious diseases and are difficult to isolate and to identify from clinical specimens, the appropriate antibiotic therapy to infection withDesulfovibriospp. has not been determined. We report the first case of liver abscess with bacteremia due toDesulfovibrio desulfuricansto show the clinical presentation and treatment. The patient was successfully treated with intravenous piperacillin-tazobactam and oral amoxicillin-clavulanic acid.


1993 ◽  
Vol 27 (3-4) ◽  
pp. 133-136 ◽  
Author(s):  
Naoyuki Kamiko ◽  
Shinichiro Ohgaki

The possibility of multiplication of F-specific RNA phage (FRNA phage) multiplication in the environment was investigated. Using the Qβ strain in pure culture as a model FRNA phage, the effects of bacterial growth phase, substrate concentration and cultivation temperature on phage multiplication were studied. Similar experiments with environmental samples from raw sewage were then preformed.


2019 ◽  
Vol 167 ◽  
pp. 105760
Author(s):  
K.M. Khomtchouk ◽  
M. Weglarz ◽  
L.A. Bekale ◽  
I. Koliesnik ◽  
P.L. Bollyky ◽  
...  

1979 ◽  
Vol 182 (2) ◽  
pp. 407-412 ◽  
Author(s):  
R J Allen ◽  
G K Scott

Isolated outer membranes and outer-membrane extracts from Escherichia coli ML308-225 in the early-exponential growth phase contain more protein than do corresponding preparations from late-exponential- or stationary-phase bacteria. Isotope-dilution experiments show that this is due to a loss of protein from the membrane during the exponential growth phase. Inhibition of bacterial growth and protein synthesis stabilizes the outer-membrane-protein concentration. Protein synthesis in the absence of bacterial growth results in higher concentrations of protein in the outer membrane.


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