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A Novel Thermophilic Bacterium Isolated from a Hot Spring in Chang-bai Mountains and Its Characteristic of Morphology
GAO Chao-hui, MENG Qing-fan, LU Jia-hui, FENG De-ri, JIANG Chao-jun, CHEN Ya-guang, TENG Li-rong
J4. 2005, 43 (04):
527-532.
Abstract: A thermophilic strain CW2 was isolated and purified from the soil around a hot spring in Chang-bai mountains. The cells of isolate CW 2 stain Gram positively, the morphology of the cells of isolate was c hanged from rod to round in the process of growth, the cells in the initial phase of logarithmic growth were
longrod, majority of cells singly existed, minority of cells were geminated
or formed a long discontinuous chain, until to invariable phage of growth, the c
ells changed to globe. Strain CW2 formed spore, had capsule, flagella, motility, no parasporal crystal, V.P. test was negative, could catabolism starch, could not catabolism fibrin, aerobic, but could grow without oxygen, grow at and between 30~60 ℃(opt. 55 ℃), grow at and between pH 5~11(opt. pH 7.5). The neonatal colonies were milk-white and round and the margin is regular, growing along with the
strain CW2, the colonies randomly developed to three shapes, finally formed irregular round colonies, flowery colonies or radiate compressed colonies.
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