GAS VACUOLATE BACTERIA OBTAINED FROM MARINE WATERS OF ANTARCTICA
GAS VACUOLATE BACTERIA OBTAINED FROM MARINE WATERS OF ANTARCTICA
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DOI：
10.1007/bf01570303
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发表时间：
1989-04-01
影响因子：
2.6
通讯作者：
STALEY, JT
中科院分区：
文献类型：
--
作者：
IRGENS, RL;SUZUKI, I;STALEY, JT
从南极海洋沃茨中分离到几株异养气泡细菌。据我们所知，这些是第一个海洋形式的气体空泡细菌被报道。目前分离株均为革兰氏阴性杆菌。所有分离物都是嗜冷菌，其生长在≤1.5 ℃和7 ℃，在高于14 ℃的温度下没有生长。它们都可以在海水的盐浓度下生长，尽管有些可以在1/16的浓度下生长。其中两种菌株产生橙子色素，而迄今为止已知的所有异养气泡细菌都是无色素的。这两种色素丝状菌株在5.0%NaCl下生长良好，并具有特定的钠离子需求。分离株在它们用于生长的基质上是不同的。根据菌株使用有机酸、氨基酸和糖。所有分离株似乎是微需氧和氧化酶和过氧化氢酶阳性。Al在pH7.0时生长良好。色素菌株的mol% G+C为31，非色素菌株的mol%G+C为52-57。
Several strains of heterotrophic, gas vacuolate bacteria were isolated from marine waters of Antarctica. To our knowledge these are the first marine forms of gas vacuolate bacteria to be reported. Current isolates are all Gram-negative rods. All isolates are psychrophiles that grow at temperatures between .ltoreq.-1.5.degree.C and 7.degree.C, with none growing at temperatures higher than 14.degree.C. All can grow at salt concentrations of sea water, although some can grow at 1/16th that concentration. Two of the strains produce orange colored pigments, whereas all heterotrophic gas vacuolate bacteria known to date are nonpigmented. The two pigmented filamentous strains grow well at 5.0% NaCl and have a specific sodium ion requirement. Isolates differ in the substrates they use for growth. Organic acids, amino acids, and sugars are used depending upon the strain. All isolates appear to be microaerophilic and oxidase and catalase positive. Al grow well at pH 7.0. The mol% G+C of the pigmented strains is 31 and that of the non-pigmented strains, 52-57.