Effects of high concentrations of l-arginine on acid production, cell yield and viability of the oral bacterium Streptococcus mutans BHT

Delisle, Allan L.; Weaver, DL

doi:10.1016/0003-9969(81)90168-0

Cited by 7 publications

(2 citation statements)

References 13 publications

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“…At faster growth rates (D=0.3 h -1) these effects were seen at lower arginine concentrations. The inability of S. mutans T8 to utilise arginine is in accord with previous findings that only serotype b strains possess this ability [19].…”

Section: Discussionsupporting

confidence: 90%

The utilisation of arginine by oral streptococci grown glucose-limited in a chemostat

Rogers

Zilm

Gully

1986

FEMS Microbiology Letters

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Pure cultures of 2 strains of Streptococcus milleri and one of Streptococcus mutans were grown glucose‐limited at dilution rates of D= 0.1 h−1 and D= 0.3 h−1 and controlled pH of 7.0 in a chemically defined medium containing arginine levels of 0.6, 10, 33, 60 and 74 mM. Culture filtrate levels of arginine and its metabolites and glucose were determined as were cell dry weights and intracellular glycogen (IG). In S. milleri, stoichiometric conversion of up to 60 mM of arginine to citrulline and ornithine occurred, with 75% of the arginine appearing as ornithine. Similar patterns were obtained at D= 0.3 h−1, although only 30–40% of the arginine was converted to ornithine. At the 10 mM arginine level, biomass but no IG was produced while above this level, IG was also synthesised. At D= 0.3 h−1, substantial amounts of IG were detected at all arginine levels. As expected, S. mutans did not respond to increasing arginine levels and the use of this amino acid as an additional carbon and energy source with the release of ammonia in organisms such as S. milleri and Streptococcus sanguis may help to explain their dominance when growing in vitro and in vivo with S. mutans under glucose‐limiting conditions.

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Section: Discussionsupporting

confidence: 90%

The utilisation of arginine by oral streptococci grown glucose-limited in a chemostat

Rogers

Zilm

Gully

1986

FEMS Microbiology Letters

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“…This dependence on inoculation order could reflect the utilization of essential~5 FIG. 4. Population densities (OD at 600 nm) for S. mutans 6715-15 (O) and S. sanguis 10558 (A) in binary continuous culture at D = 0.769/h.…”

Section: Resultsmentioning

confidence: 99%

Application of a competition model to the growth of Streptococcus mutans and Streptococcus sanguis in binary continuous culture

Kemp¹,

Robrish²,

Curtis³

et al. 1983

Appl Environ Microbiol

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Streptococcus mutans 6715-15 and Streptococcus sanguis 10558 were grown together in continuous culture with glucose as the limiting carbon source. The relationship of growth rate to substrate concentration was determined for pure cultures of each organism in continuous and batch cultures. A model based on competition for a growth-limiting substrate (glucose) was used to predict the proportions of each organism when grown in binary cultures. The results indicate that interactions other than competition for glucose carbon exist between S. mutans and S. sanguis grown under these conditions.

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Coordinately repressible arginine deiminase system inStreptococcus sanguis

Ferro

Bender

Marquis

1983

Current Microbiology

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Effects of high concentrations of l-arginine on acid production, cell yield and viability of the oral bacterium Streptococcus mutans BHT

Cited by 7 publications

References 13 publications

The utilisation of arginine by oral streptococci grown glucose-limited in a chemostat

The utilisation of arginine by oral streptococci grown glucose-limited in a chemostat

Application of a competition model to the growth of Streptococcus mutans and Streptococcus sanguis in binary continuous culture

Coordinately repressible arginine deiminase system inStreptococcus sanguis

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