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• Main Author: C Sucrose
• Other Authors: The Pennsylvania State University CiteSeerX Archives
• Format: Text
• Language: English
• Subjects: Kamchatka
• Online Access: http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.458.7805; http://www.old.inmi.ru/documents/Prokofeva2006.pdf

Thermoacidophilic prokaryotes inhabiting acidic hot springs are represented by archaea and bacteria with either respiratory [1] or anaerobic fermentative [2, 5] metabolism. Thermoacidophilic microorganisms avail-able in laboratory cultures grow at temperatures rang-ing from 50 to 92°C and at pH 0–5.5. The goal of this study was to determine the activities of organotrophic thermoacidophilic prokaryotes directly in their natural habitats, acidic hot springs in Uzon caldera, Kamchatka (Table 1). Samples of sediment (5 ml) and water (10 ml) from each hot spring were placed in 25-ml penicillin bottles and sealed. The organic substrate was added to each bottle as 0.2 ml of a sterile water solution of uniformly labeled