A New Species of the Genus<i>Pseudomonas</i>Pathogenic for certain Reptiles

Caldwell, Mary E.; Ryerson, Dwight L.

doi:10.1128/jb.39.3.323-336.1940

Cited by 7 publications

(3 citation statements)

References 15 publications

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“…Pseudomonas reptilivora ATCC 14836 (Caldwell and Ryerson 1940) and mutant strain PT109, isolated in this study, were used in this investigation. The strains were grown in a modified minimal medium as has been described previously (West 1989).…”

Section: Micro-organisms and Culture Mediamentioning

confidence: 99%

“…The bacterium Pseudomonas reptilivora has been shown to be pathogenic for reptiles and fish (Caldwell and Ryerson 1940;Li et al 1978). This micro-organism has also been found to produce three antibiotics (Del Rio et al 1972;Martinez-Molina and Olivares 1979;Martinez-Molina et al 1982), a lipase activity of potential commercial value (Lanser et al 2002) and the commercially valuable glutamic acid when co-immobilized in calcium alginate beads with Micrococcus glutamicus (Sunitha et al 1998).…”

Section: Introductionmentioning

confidence: 99%

“…The bacterium Pseudomonas reptilivora has been shown to be pathogenic for reptiles and fish (Caldwell and Ryerson 1940; Li et al. 1978).…”

Section: Introductionmentioning

confidence: 99%

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Regulation of pyrimidine nucleotide formation in Pseudomonas reptilivora

West¹

2004

Lett Appl Microbiol

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Aims: To study the regulation of de novo pyrimidine biosynthesis in the pathogenic bacterium Pseudomonas reptilivora ATCC 14836. Methods and Results: The pyrimidine biosynthetic pathway enzymes were assayed in extracts of Ps. reptilivora ATCC 14836 cells and of cells from an auxotroph lacking aspartate transcarbamoylase activity. Pyrimidine biosynthetic pathway enzyme activities in ATCC 14836 were influenced by the addition of pyrimidine bases to the culture medium with orotic acid addition inducing dihydroorotase activity. Pyrimidine starvation of the transcarbamoylase mutant strain increased its de novo enzyme activities suggesting that the de novo pathway was also subject to repression by a pyrimidine-related compound. Aspartate transcarbamoylase activity in ATCC 14836 was inhibited in vitro by pyrophosphate and ATP. Conclusions: Regulation of pyrimidine biosynthesis in Ps. reptilivora was observed at the level of enzyme synthesis and at the level of activity for aspartate transcarbamoylase. Its regulation of enzyme synthesis seemed to be more highly controlled than what was observed in the related species Ps. fluorescens. Significance and Impact of the Study: This investigation found that pyrimidine biosynthesis is controlled in Ps. reptilivora. This could prove helpful to future studies exploring its pathogenicity.

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Section: Micro-organisms and Culture Mediamentioning

confidence: 99%