Specific uptake rates of amino acids by attached and free-living bacteria in a mesotrophic lake
نویسندگان
چکیده
منابع مشابه
Comparison of cell-specific activity between free-living and attached bacteria using isolates and natural assemblages.
Marine snow aggregates are microbial hotspots that support high bacterial abundance and activities. We conducted laboratory experiments to compare cell-specific bacterial protein production (BPP) and protease activity between free-living and attached bacteria. Natural bacterial assemblages attached to model aggregates (agar spheres) had threefold higher BPP and two orders of magnitude higher pr...
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Ephemeral blooms of filamentous bacteria are a common phenomenon in the water column of oligo- to mesotrophic lakes. It is assumed that the appearance of such morphotypes is favored by selective predation of bacterivorous protists and that filter-feeding zooplankton plays a major role in suppressing these bacteria. The phylogenetic affiliation of the important bloom-forming filamentous bacteria...
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Preimplantation mouse embryos exhibit growth at the blastocyst stage when there is a dramatic increase in protein content between days 4 and 5 after hCG treatment. This increse in protein synthesis requires the uptake of amino acids from the surrounding medium, but the consumption of individual amino acids present as a mixture has not been examined. We therefore measured the simultaneous deplet...
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The growth of a tumor in a wasting animal de mands that the normal tissues yield their struc tural units to the neoplastic tissue. Because such structural elements are constantly released and recombined, the neoplastic cell can gain them from the normal cell merely by seizing upon them with greater avidity, without direct attack upon the normal tissue. In the investigation reported here, we hav...
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ژورنال
عنوان ژورنال: Applied and Environmental Microbiology
سال: 1985
ISSN: 0099-2240,1098-5336
DOI: 10.1128/aem.49.5.1254-1259.1985