微观世界盐度和有机底物浓度对霍乱弧菌肠毒素产生的影响。
Effects of microcosm salinity and organic substrate concentration on production of Vibrio cholerae enterotoxin.
作者信息
Tamplin M L, Colwell R R
出版信息
Appl Environ Microbiol. 1986 Aug;52(2):297-301. doi: 10.1128/aem.52.2.297-301.1986.
Abstract
The effects of aquatic processes on production of cholera toxin by Vibrio cholerae were studied with seawater microcosms. Several salinity and organic nutrient concentrations were employed. At 10 g of organic nutrient per liter of seawater, toxin production increased as the salinity was increased. At lower organic nutrient concentrations, toxin production was markedly enhanced when the salinity was 20 and 25%. Toxin concentration increased with salinity, independent of cell concentration and toxin stability. From the results obtained in this study, it is concluded that physical and chemical parameters of the aquatic environment affect not only the physiological state of V. cholerae, but also its potential pathogenicity.
摘要
利用海水微观生态系统研究了水生过程对霍乱弧菌产生霍乱毒素的影响。采用了几种盐度和有机营养物浓度。在每升海水含有10克有机营养物的情况下，毒素产量随着盐度的增加而增加。在较低的有机营养物浓度下，当盐度为20%和25%时，毒素产量显著提高。毒素浓度随盐度增加，与细胞浓度和毒素稳定性无关。从本研究获得的结果可以得出结论，水生环境的物理和化学参数不仅影响霍乱弧菌的生理状态，还影响其潜在致病性。
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