THE CHEMOTACTIC EFFECT OF OXYGEN ON BACTERIA
THE CHEMOTACTIC EFFECT OF OXYGEN ON BACTERIA
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DOI：
10.1002/path.1700770228
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发表时间：
1959-01-01
期刊：
影响因子：
--
通讯作者：
SHERRIS, JC
中科院分区：
文献类型：
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作者：
BARACCHINI, O;SHERRIS, JC
在毛细管中的粘假单胞菌悬浮液在1-3天后在距空气悬浮液界面3-4 mm处形成高度运动细胞的宏观条带。当上覆氧张力增加时，该带从界面后退，当上覆氧张力降低时，该带接近界面。将含有水的胶囊刺入假单胞菌的菌落中，并且分离出一条带并稳定地沿管上升。蛋白胨的加入使运动速率增加到8.8 [mu]/秒。这些现象是由于光合作用对氧张力变化的反应。利用藻类作为氧源的Engelmann技术也证明了趋氧性。在24个活动需氧菌中，23个表现出阳性趋氧性。4株梭菌中有3株表现为阴性嗜氧性。非运动菌株不受影响。趋氧性可以使能动细菌获得并保持在适合其繁殖的大气环境中。
Suspensions of Pseudomonas viscosa in capillary tubes developed macroscopic bands of highly motile cells 3-4 mm from the air suspension interface after 1-3 days. The band receded from the interface when the overlying oxygen tension was increased, and approached it when it was decreased. Capillaries containing water were stabbed into colonies of pseudomonads and a band separated and steadily ascended the tube. Addition of peptone increased the rate of movement up to 8.8 [mu]/second. These phenomena were due to phobotactic response to changes in oxygen tension. Aerotaxis was also demonstrated by Engelmann''s technique using algae as oxygen source. Of 24 motile aerobic organisms 23 showed positive aerotaxis. Three of 4 Clostridia showed negative aerotaxis by Engelmann''s technique. Non-motile strains were unaffected. Aerotaxis may allow motile bacteria to attain and remain in an atmospheric environment suitable for their multiplication.