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Bactericidal effect of ADP and acetic acid on Bacillus subtilis

Author:
Asensi Álvarez, VíctorUniovi authority; Parra Fernández, José FranciscoUniovi authority; Fierer, Joshua; Valle Garay, EulaliaUniovi authority; Bordallo Landa, María del CarmenUniovi authority; Suárez Rendueles, María PazUniovi authority; Gascón Muñoz, SantiagoUniovi authority; Cartón Sánchez, José AntonioUniovi authority; Maradona Hidalgo, José AntonioUniovi authority; Arribas Castrillo, José ManuelUniovi authority
Publication date:
1997
Editorial:

Springer

Publisher version:
http://dx.doi.org/10.1007/s002849900145
Citación:
Current Microbiology, 34(1), p. 61-66 (1997); doi:10.1007/s002849900145
Descripción física:
p. 61-66
Abstract:

Bacillus subtilis is a ubiquitous soil bacterium used for measuring the beta-lysin activity and in other bioassays, We observed a complete bactericidal effect of ADP on B. subtilis at concentrations of 50-100 mu M at pH values <5.5, which disappeared at pH values above 6, The effect was also found for acetic acid at concentrations >17.4 mu M and similar pH values, ATP, adenosine, and HCl were not bactericidal, We used BCECF-AM, a pH-sensitive probe, and found that the killing of B. subtilis was due to a change in the intracellular pH caused by the passage across the cell membrane of these weak organic acids when incubated with B. subtilis at pH values near the pK. More experiments are needed to determine the biological meaning of these in vitro findings

Bacillus subtilis is a ubiquitous soil bacterium used for measuring the beta-lysin activity and in other bioassays, We observed a complete bactericidal effect of ADP on B. subtilis at concentrations of 50-100 mu M at pH values <5.5, which disappeared at pH values above 6, The effect was also found for acetic acid at concentrations >17.4 mu M and similar pH values, ATP, adenosine, and HCl were not bactericidal, We used BCECF-AM, a pH-sensitive probe, and found that the killing of B. subtilis was due to a change in the intracellular pH caused by the passage across the cell membrane of these weak organic acids when incubated with B. subtilis at pH values near the pK. More experiments are needed to determine the biological meaning of these in vitro findings

URI:
http://hdl.handle.net/10651/28876
ISSN:
0343-8651; 1432-0991
DOI:
10.1007/s002849900145
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