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二氧化碳对荧光假单胞菌生长的影响。

Effect of carbon dioxide on growth of Pseudomonas fluorescens.

作者信息

Gill C O, Tan K H

出版信息

Appl Environ Microbiol. 1979 Aug;38(2):237-40. doi: 10.1128/aem.38.2.237-240.1979.

Abstract

In minimal medium at 30 degrees C, growth of Pseudomonas fluorescens was stimulated when the pressure (p) of CO2 in solution was 100 mm of Hg, but at higher concentrations the growth rate declined linearly with increasing pCO2. All concentrations of CO2 were inhibitory for growth in complex medium, and at 30 degrees C the maximum degree of inhibition was attained when pCO2 was 250 mm of Hg. The degree of inhibition at a constant pCO2 in solution increased with decreasing temperature. The degree of inhibition was directly proportional to temperature for growth in complex medium, but not in minimal medium. The inhibition of cell respiration by CO2 was the same whether cells had been grown in air or in the presence of CO2, indicating that adaptive enzyme synthesis does not occur in response to CO2.

摘要

在30摄氏度的基本培养基中,当溶液中二氧化碳的压力(p)为100毫米汞柱时,荧光假单胞菌的生长受到刺激,但在更高浓度下,生长速率随pCO2的增加呈线性下降。所有浓度的二氧化碳对复合培养基中的生长均有抑制作用,在30摄氏度时,当pCO2为250毫米汞柱时达到最大抑制程度。溶液中在恒定pCO2下的抑制程度随温度降低而增加。在复合培养基中,抑制程度与温度成正比,但在基本培养基中并非如此。无论细胞是在空气中生长还是在有二氧化碳的情况下生长,二氧化碳对细胞呼吸的抑制作用都是相同的,这表明不会因二氧化碳而发生适应性酶合成。

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