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Full-Text Articles in Life Sciences
Differential Virus Host-Ranges Of The Fuselloviridae Of Hyperthermophilic Archaea: Implications For Evolution In Extreme Environments, Ruben M. Ceballos, Caleb D. Marceau, Joshua O. Marceau, Steven Morris, Adam J. Clore, Kenneth M. Stedman
Differential Virus Host-Ranges Of The Fuselloviridae Of Hyperthermophilic Archaea: Implications For Evolution In Extreme Environments, Ruben M. Ceballos, Caleb D. Marceau, Joshua O. Marceau, Steven Morris, Adam J. Clore, Kenneth M. Stedman
Biology Faculty Publications and Presentations
An emerging model for investigating virus-host interactions in hyperthermophilic Archaea is the Fusellovirus-Sulfolobus system. The host, Sulfolobus, is a hyperthermophilic acidophile endemic to sulfuric hot springs worldwide. The Fuselloviruses, also known as Sulfolobus Spindle-shaped Viruses (SSVs), are "lemon" or "spindle"-shaped double-stranded DNA viruses, which are also found worldwide. Although a few studies have addressed the host-range for the type virus, Sulfolobus Spindle-shaped Virus 1 (SSV1), using common Sulfolobus strains, a comprehensive host-range study for SSV-Sulfolobus systems has not been performed. Herein, we examine six bona fide SSV strains (SSV1, SSV2, SSV3, SSVL1, SSVK1, SSVRH) and their respective infection characteristics on …
A Novel Virus Genome Discovered In An Extreme Environment Suggests Recombination Between Unrelated Groups Of Rna And Dna Viruses, Geoffrey S. Diemer, Kenneth M. Stedman
A Novel Virus Genome Discovered In An Extreme Environment Suggests Recombination Between Unrelated Groups Of Rna And Dna Viruses, Geoffrey S. Diemer, Kenneth M. Stedman
Biology Faculty Publications and Presentations
Background: Viruses are known to be the most abundant organisms on earth, yet little is known about their collective origin and evolutionary history. With exceptionally high rates of genetic mutation and mosaicism, it is not currently possible to resolve deep evolutionary histories of the known major virus groups. Metagenomics offers a potential means of establishing a more comprehensive view of viral evolution as vast amounts of new sequence data becomes available for comparative analysis.
Results: Bioinformatic analysis of viral metagenomic sequences derived from a hot, acidic lake revealed a circular, putatively single-stranded DNA virus encoding a major capsid protein similar …
Survey Of Glycerol Dialkyl Glycerol Tetraethers (Gdgts) In Nevada And California Hot Springs And Selected T Thermophiles, Julienne J. Paraiso, Amanda Jean Williams, Brian P. Hedlund, Chuanlun L. Zhang
Survey Of Glycerol Dialkyl Glycerol Tetraethers (Gdgts) In Nevada And California Hot Springs And Selected T Thermophiles, Julienne J. Paraiso, Amanda Jean Williams, Brian P. Hedlund, Chuanlun L. Zhang
McNair Poster Presentations
Glycerol dialkyl glycerol tetraethers (GDGTs) are core membrane lipids of many Archaea and some Bacteria found ubiquitously in soils and in many aqueous environments. Here, we examined the GDGT concentration in forty sediment samples from geothermal hot springs in the Great Basin (USA). Sediment samples were collected in tandem with extensive geochemical and site characterization. Hot spring temperatures ranged from 31 to 95°C and pH values from 6.8 to 10.7. Parametric Pearson's correlation coefficients and nonparametric Spearman's rho values were calculated to identify significant correlations between GDGT profiles and geochemical analytes. Isoprenoidal GDGTs (iGDGTs) negatively correlated with pH and positively …