BACILLUS-FLAVOTHERMUS, A NEWLY ISOLATED FACULTATIVE THERMOPHILE
BACILLUS-FLAVOTHERMUS, A NEWLY ISOLATED FACULTATIVE THERMOPHILE
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DOI：
10.1007/bf00400386
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发表时间：
1982-01-01
期刊：
影响因子：
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通讯作者：
MULDERS, JWM
中科院分区：
文献类型：
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作者：
HEINEN, W;LAUWERS, AM;MULDERS, JWM
来自新西兰北方岛温泉的样本含有五种不同的嗜热细菌菌株。进一步表征了一种具有特殊性质的菌株，即在30°C以及在70°C下形成暗黄色菌落。该菌为革兰氏阳性菌，需氧，游动芽孢杆菌，有末端内生孢子。该菌株与B.凝结物然而，两个典型的特征是矛盾的，这一结论，即强烈的黄色色素沉着的菌落和生长温度的范围。发现后者可达到30至70°C，在有氧条件下最佳温度为60°C，在厌氧条件下最佳温度为65°C。在中等温度下的生长比在60°C下慢，但最终的细胞产率几乎相等。因此，该菌株可被认为是兼性嗜热的。由于该菌株的特征与迄今为止描述的任何芽孢杆菌属物种都不一致，我们得出结论，我们已经分离出一种新的菌株，建议将其命名为Bacillus flavothermus。
A sample from a hot spring on the northern island of New Zealand contained five different thermophilic bacterial strains. One strain with peculiar properties, i.e. the formation of dark yellow colonies at 30°C as well as at 70°C, was further characterized. It was found to be a gram-positive, facultatively aerobic, motileBacillusspecies, with terminal endospores. According to the physiological properties the strain closely resembledB. coagulans. However, two typical characteristics were contradictory to this conclusion, namely the intense yellow pigmentation of the colonies and the range of growth temperature. The latter was found to reach from 30 to 70°C, with an optimum at 60°C under aerobic and at 65°C under anaerobic conditions. Growth at moderate temperatures was slower than at 60°C, but the final cell yields were almost equal. The strain can therefore be considered as facultatively thermophilic. The pigment, which was found to be located in the cytoplasmic membrane, was spectroscopically identified as a carotenoid.Because the characteristics of this strain did not correspond with any of the Bacillus species described thus far, we concluded, that we had isolated a novel strain, for which the nameBacillus flavothermusis proposed.