GROWTH OF <i>ESCHERICHIA COLI</i> IN HEAT‐ AND COPPER‐TREATED SYNTHETIC SEAWATER1

Jones, Galen E.

doi:10.4319/lo.1967.12.1.0167

Cited by 20 publications

(6 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Its activity is greater at low pH values. Inactivation of the toxin by heat, which is often assumed to indicate the involvement of organic compounds, does not rule out the possibility that the inhibitor is inorganic, because heat can precipitate those metals that may cause the decline of species introduced into the marine environment (2). Although substances that are inhibitory to introduced organisms occur in soils (18) and waters (13), the identities of the compounds are largely unknown.…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Bacterial Inhibitors in Lake Water

Klein

Alexander

1986

Appl Environ Microbiol

View full text Add to dashboard Cite

The populations of six bacterial genera fell rapidly after their addition to sterile lake water but not after their addition to buffer. The decline in numbers of two species that were studied further, Klebsiella pneumoniae and Micrococcus flavus, occurred even when the buffer was added to sterile lake water. The inhibition of K. pneumoniae by substances in lake water varied with the season of the year, and the rate and extent of decline of both species were different in sterile samples of different lakes. The extent of reduction in the density of K. pneumoniae was independent of initial population size and was diminished by the addition of 10 ,ug of glucose per ml of lake water. The toxin was removed from lake water by dialysis and by a cation-exchange resin but not by an anion-exchange resin, and it was destroyed by heating. The inhibition of K. pneumoniae was not evident in lake water buffered at a pH value above 8.0. We suggest that toxins may be important in determining the composition of the bacterial community of lakes. MATERIALS AND METHODS Klebsiella pneumoniae KNo was provided by A. A. Szalay, Agrobacterium tumefaciens was provided by M. A. Cole, Acinetobacter sp. was provided by C. G. Daughton, Escherichia coli 9637 was provided by the American Type

show abstract

Section: Discussionmentioning

confidence: 99%

“…Bacteriocinlike substances have been implicated in the decline of coliforms in drinking water distribution systems (7). In addition to organic inhibitors, heavy metals (2) and ammonia (10) may cause the death of species introduced into natural ecosystems.…”

mentioning

confidence: 99%

Bacterial Inhibitors in Lake Water

Klein

Alexander

1986

Appl Environ Microbiol

View full text Add to dashboard Cite

show abstract

“…(1) Extracellular interaction and binding by mucilaginous material and cell walls (Fogg & Westlake, 1955;Ashida, 1965;Jones, 1967;Fitzgerald, 1967;Button, 1968;Nielsen & Kamp-Nielsen, 1970;Corpe, 1972Corpe, , 1974Silverberg, 1975).…”

Section: -Scan X-ray Microanalysis Of Intracellular Inclusion Bodiesmentioning

confidence: 99%

Ultrastructural observations on the marine fouling diatomAmphora

Daniel

Chamberlain

Jones

1980

Helgolander Meeresunters

View full text Add to dashboard Cite

Ecological and Scanning electron microscope (S. E. M.) studies indicated that the diatom Amphora was an important constituent in the initial colonization of test panels coated with a copper antifouling composition. Amphora was also found as the dominant fouling diatom species on paint samples from "in-service" supertankers and yachts. Associated with the diatom was copious amounts of mucilaginous material, which often encapsulated the cells. Histochemical analysis of the mucilage indicates that it is predominantly polysaccharide in nature. Using the Transmission electron microscope (T. E. M.) and electron microscope cytochemistry the intracellular origin of the adhesive was investigated. T. E. M. and S. E. M. observations of acid-cleaned-cells indicate that the mucilage may be secreted through specialized regions of the frustule. Material isolated from antifouling panels was compared with laboratory cultured Amphora spp. for copper resistance and internal accumulation using TEMSCAN -X ray analytical equipment.

show abstract

“…A significant enhancement in growth was also seen when ASW, which by itself is incapable of supporting any growth, was autoclaved at 1.02 atm for 15 min and used as a culture medium. The reason for this rcsponsc is not clearly understood, but it has been observed by others (Pramcr, Carlucci, and Scarpino 1963;Jones 1967). Therefore, we have used only filter-sterilized ASW for subsequent enrichment cxperimcnts.…”

Section: Growth Responses To Humic Acid Enrichmentmentioning

confidence: 99%

Influence of Humic Substances on the Growth of Marine Phytoplankton: Dinoflagellates1

Prakash

Rashid

1968

Limnology & Oceanography

187

View full text Add to dashboard Cite

Humic substances, in small amounts, exert a stimulatory effect on marine dinoflagellates that is reflected in increased yield, growth rate, and '"C uptake. Humic acid was found to be more active than fulvic acid; in both cases the growth responses were dependent on concentration.Of the various fractions isolated, the low molecular weight fractions of humic acid produced the greatest growth response in unialgal cultures of dinoflagellates.The positive effect of humic substances on phytoplankton growth is, for the most part, independent of nutrient concentration and cannot be attributed entirely to chelation processes. It appears that growth enhancement in the presence of humic substances is linked with stimulation of algal cell metabolism. Because of their high concentrations in coastal waters, humic substances may thus be regarded as an ecologically significant entity influencing phytoplanktonic prod&ion.

show abstract

GROWTH OF ESCHERICHIA COLI IN HEAT‐ AND COPPER‐TREATED SYNTHETIC SEAWATER1

Cited by 20 publications

References 1 publication

Bacterial Inhibitors in Lake Water

Bacterial Inhibitors in Lake Water

Ultrastructural observations on the marine fouling diatomAmphora

Influence of Humic Substances on the Growth of Marine Phytoplankton: Dinoflagellates1

Contact Info

Product

Resources

About