Human pathogens can survive and grow in hot springs. For water quality assessment, Escherichia coli or Enterococci are the main thermotolerant enteric bacteria commonly used to estimate the load of pathogenic bacteria in water. However, most of the environmental bacteria are unculturable thus culture methods may cause bias in detection of most pathogens. Illumina sequencing can provide a more c...

Hot springs are the most common infectious source of Legionella pneumophila in Japan. However, little is known about the association between L. pneumophila and environmental waters other than hot springs. In this study, water samples from 22 environmental water sites were surveyed; of the 22 samples, five were L. pneumophila positive (23%). L. pneumophila was mainly isolated from ashiyu foot sp...

The aim of this work was to study the effect of some nutritional and environmental factors on the production of cellulases, in particular endoglucanase (CMCase) and exoglucanases (FPase) from Bacillus licheniformis MVS1 and Bacillus sp. MVS3 isolated from an Indian hot spring. The characterization study indicated that the optimum pH and temperature value was 6.5 to 7.0 and 50-55C, respectively....

Proteorhodopsin (PR) sequences were PCR amplified from three Andean acidic hot spring samples. These sequences were similar to freshwater and marine PRs and they contained residues indicative of proton-pumping activity and of proteins that absorb green light; these findings suggest that PRs might contribute to cellular metabolism in these habitats.

The slightly thermophilic bacterium Tepidimonas taiwanensis strain VT154-175 has been isolated from a hot spring in the area of Viterbo, Italy. The whole draft genome of 2.9 Mb obtained by paired-end next-generation sequencing and divided into 60 scaffolds is presented.

Photosynthesis by Synechococcus lividus, the sole oxygenic phototroph inhabiting the surface of the 55 degrees C cyanobacterial mat in Mushroom Spring, Yellowstone National Park, causes superoxic and alkaline conditions which promote glycolate photoexcretion. At O(2) concentrations characteristic of the top 2 mm of mat during the day, up to 11.8% of NaHCO(3) fixed in the light was excreted, and...

Geobacillus stearothermophilus strains 22 and 53 were isolated from sediment samples isolated from the Garga hot spring (72°C) located in the valley of the river Barguzin (the Baikal region, Russian Federation) (54°19'3.72″N, 110°59'38.4″E).

The consensus genome sequence of a new member of the family Fuselloviridae designated as SMF1 (Sulfolobales Mexican fusellovirus 1) is presented. The complete circular genome was recovered from a metagenomic study of a Mexican hot spring. SMF1 exhibits an exceptional coding strand bias and a reduced set of fuselloviral core genes.

The Sulfolobales archaea have been found inhabiting acidic hot springs all over the world. Here, we report the 1.798-Mbp draft genome sequence of the thermoacidophilic Sulfolobales archaeon AZ1, reconstructed from the metagenome of a Mexican hot spring. Sequence-based comparisons revealed that the Sulfolobales archaeon AZ1 represents a novel candidate genus.

background: free-living amoebae have various genera that are found in several environmental niches such as soil, freshwater, dust, seawater and hot springs. most of free-living amoebae are normally harmless to humans. however, some such as acanthamoeba and also naegleria fowleri , balamuthia manderillaris and sappinia are identified as opportunistic and pathogenic amoebae that can cause eye dis...