Mechanistic model of nutrient uptake explains dichotomy between marine oligotrophic and copiotrophic bacteria
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چکیده
منابع مشابه
Transcriptional Control in Marine Copiotrophic and Oligotrophic Bacteria with Streamlined Genomes.
UNLABELLED Bacteria often respond to environmental stimuli using transcriptional control, but this may not be the case for marine bacteria such as "Candidatus Pelagibacter ubique," a cultivated representative of the SAR11 clade, the most abundant organism in the ocean. This bacterium has a small, streamlined genome and an unusually low number of transcriptional regulators, suggesting that trans...
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The nutritional requirements of two marine bacteria designated as oligotrophic because they could grow on media containing 10 mg of C per liter supplied as peptone and two classified as eutrophic because they could grow only at higher concentrations of C supplied as peptone were examined. Each of the four organisms was found to have its own unique group of compounds which could serve either ind...
متن کاملConjugative Plasmid Transfer between Bacteria under Simulated Marine Oligotrophic Conditions.
Marine Vibrio S14 strains and an Escherichia coli strain were starved in artificial seawater (NSS) with no added carbon, nitrogen, or phosphorus. The broad-host-range plasmid RP1 was transferred between the starving S14 strains and also from the E. coli donor to the S14 recipient under oligotrophic conditions, in which mixtures of donor and recipient cells were held on Nuclepore filters either ...
متن کاملMultiphasic uptake of D-glucose by an oligotrophic marine bacterium
Uptake of D-glucose in the range 2.5 X lOP9 M to 4.0 X I O ~ M by an oligotrophic marine bacterium, LNB-155, could be represented by 4 phases of a single, multiphasic mechanism. Other kinetic models did not give a good fit. Sharp transitions occurred at about 1.6 X 1OV6 M, 10-5 M and 2 X 10-4 M. Values for K, and V,,, increased regularly upon transition to higher phases. Multiphasic uptake mech...
متن کاملThe genomic basis of trophic strategy in marine bacteria.
Many marine bacteria have evolved to grow optimally at either high (copiotrophic) or low (oligotrophic) nutrient concentrations, enabling different species to colonize distinct trophic habitats in the oceans. Here, we compare the genome sequences of two bacteria, Photobacterium angustum S14 and Sphingopyxis alaskensis RB2256, that serve as useful model organisms for copiotrophic and oligotrophi...
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ژورنال
عنوان ژورنال: PLOS Computational Biology
سال: 2021
ISSN: 1553-7358
DOI: 10.1371/journal.pcbi.1009023