有证据表明细菌可在空气中的微粒中形成新细胞。
Evidence that bacteria can form new cells in airborne particles.
作者信息
Dimmick R L, Wolochow H, Chatigny M A
出版信息
Appl Environ Microbiol. 1979 May;37(5):924-7. doi: 10.1128/aem.37.5.924-927.1979.
Abstract
Serratia marcescens incubated for 8 h at 31 degrees C in a chemically defined medium contained in shake flasks was aerosolized into rotating-drum aerosol chambers at 30 degrees C and saturated humidity. Cells furnished tryptone (Difco) and glycerol just before aerosolization increased (in viable numbers and countable cells) almost twofold within 1 to 2 h after becoming airborne, whereas cells not furnished additional tryptone decreased in viable numbers at a faster rate than the number of particles removed by gravitational settling. Limited tests with a Coulter Counter showed that cell volume changes occurred in growing cells that did not occur in the nongrowing population.
摘要
将粘质沙雷氏菌在摇瓶中含有的化学成分确定的培养基中于31℃培养8小时后，在30℃和饱和湿度条件下雾化到转鼓式气溶胶室中。雾化前添加胰蛋白胨（Difco）和甘油的细胞，在变为空气传播状态后的1至2小时内，活细胞数量和可计数细胞数量几乎增加了两倍，而未添加额外胰蛋白胨的细胞，其活细胞数量下降的速度比因重力沉降而去除的颗粒数量更快。使用库尔特计数器进行的有限测试表明，生长中的细胞会发生细胞体积变化，而非生长群体中的细胞则不会。
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