Algal Excretion of 14c-Labeled Compounds and Microbial Interactions in Cyanidium Caldarium Mats1

Belly, R. T.; Tansey, Michael R.; Brock, Thomas D.

doi:10.1111/j.0022-3646.1973.00123.x

Cited by 4 publications

(3 citation statements)

References 17 publications

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“…Whittaker and Feeny ( 1971) suggested that marine bacteria are capable of utilizing algal extracellular products. Such a relationship between bacteria and planktonic algae may be deduced from the ability of bacterial contaminants to grow in algal culture (Vela and Guerra 1966;Berland et al 1969) or from nutritional studies of such bacteria (13erland et al 1970) which can then be related to specific algal products (Belly et al 1973). However, such relationships have not been studied in great detail.…”

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confidence: 99%

Selective stimulation of marine bacteria by algal extracellular products1

Bell

Lang

Mitchell

1974

Limnology & Oceanography

123

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Two marine bacterial isolates differ considerably in their uptake rates of extracellular products produced by the alga Skeletonema costatum: 0.4 x 10WR pg 0 cell-l hr-l for spirillum 7697; 16 x lo-' ,ug C cell-l hr-l for pscudomonad HNY. These disparate uptake rates are used to interpret the growth patterns of the bacteria in the presence of the alga on a seawater inorganic enrichment medium. Pseudomonad HNY grows well with the alga in both batch and continuous culture, in the latter attaining a steady state population two orders of magnitude greater than achieved in the absence of the alga, Spirillum 7697, however, grows poorly in the presence of growing algal cells and appears to be inhibited to some cxtcnt under such conditions.Such observations suggest that dominant bacterial populations associated with algal blooms arc a result of both stimulation and inhibition mediated by the release of extracellular products.

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confidence: 99%

Selective stimulation of marine bacteria by algal extracellular products1

Bell

Lang

Mitchell

1974

Limnology & Oceanography

123

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“…Belly et al . () observed stimulation of Sulfobacillus ‐like bacteria by DOC secreted by the thermoacidophilic Rhodophyte Cyanidium caldarium , and chemolithotrophic prokaryotes may secrete DOC as well (Nancucheo & Johnson, ). Although heterotrophic growth efficiencies on DOC secreted by primary producers may be higher than for allochthonous DOC (Kamjunke et al ., ), even assuming 10% excretion losses, estimated primary production would fuel only c .…”

Section: Discussionmentioning

confidence: 99%

Microbial heterotrophic production in an oligotrophic acidic geothermal lake: responses to organic amendments and terrestrial plant litter

Wolfe

Fitzhugh

Almasary

et al. 2014

FEMS Microbiol Ecol

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Boiling Springs Lake (BSL) is an oligotrophic, acidic geothermal feature where even very low levels of microbial heterotrophic production still exceed autotrophy. To test whether allochthonous leaf litter (LL) inputs fuel this excess, we quantified leaf litterfall, leaching and decomposition kinetics, and measured the impact of organic amendments on production, germination and cell growth, using pyrosequencing to track changes in microbial community composition. Coniferous leaves in BSL exhibited high mass loss rates during leaching and decomposition, likely due to a combination of chemical hydrolysis and contributions of both introduced and endemic microbes. We measured very low in situ (3)H-thymidine incorporation over hours by the dominant chemolithotroph Acidimicrobium (13-65 μg C L(-1) day(-1)), which was inhibited by simple C sources (acetate, glucose). Longer term incubations with additions of 0.01-0.02% complex C/N sources induced germination of the Firmicute Alicyclobacillus within 1-2 days, as well as growth of Acetobacteraceae after 3-4 days. LL additions yielded the opposite successional patterns of these r-selected heterotrophs, boosting production to 30-150 μg C L(-1) day(-1). Growth and germination studies suggest both prokaryotes and fungi likely consume allochthonous organics, and might be novel sources of lignocellulose-degrading enzymes. A model of BSL's C budget supports the hypothesis that allochthonous inputs fuel seasonal microbial heterotrophy, but that dissolved organic C sources greatly exceed direct LL inputs.

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“…However, bacteria have been isolated which can grow in the natural concentrations of organic matter found in sea water (Carlucci and Shimp, 1974), moTeover, these bacteria not only survive, as is the case for some bacteria, but can grow in these low nutrient waters (Jannasch, 1967(Jannasch, , 1969. Numerous additional reports of bacterial stimulation and inhibition by algal release products can be cited (Steeman-Nielsen, 1955;Allen and Dawson, 1960;Vaccaro et al, 1968;Fitzgerald, 1969;Berland et al, 1970;Allen, 1971;Bell and Mitchell, 1972;_Belly et al, 1973;Bauld and Brock, 1974.;Bell et al, 1974) . .…”

Section: Statusmentioning

confidence: 99%

Effects of energy related activities on the plankton of the Chesapeake Bay. Section I. Work in progress. Progress report, 1 August 1975--31 July 1976

Taft¹

1976

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Algal Excretion of 14c-Labeled Compounds and Microbial Interactions in Cyanidium Caldarium Mats1

Cited by 4 publications

References 17 publications

Selective stimulation of marine bacteria by algal extracellular products1

Selective stimulation of marine bacteria by algal extracellular products1

Microbial heterotrophic production in an oligotrophic acidic geothermal lake: responses to organic amendments and terrestrial plant litter

Effects of energy related activities on the plankton of the Chesapeake Bay. Section I. Work in progress. Progress report, 1 August 1975--31 July 1976

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