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温度和底物浓度对塞纳河水批次培养中细菌生长产量的影响

Influence of temperature and substrate concentration on bacterial growth yield in Seine River water batch cultures.

作者信息

Barillier A, Garnier J

机构信息

CEMAGREF, Paris, France.

出版信息

Appl Environ Microbiol. 1993 May;59(5):1678-82. doi: 10.1128/aem.59.5.1678-1682.1993.

Abstract

The growth of natural bacterial assemblages was monitored in 3-liter reactors under various temperature and substrate concentration conditions. The oxygen concentration was continuously monitored, and subsamples were taken at short time intervals to determine bacterial number and biomass. The rate of bacterial mortality was also determined. Bacterial growth yield was calculated as the ratio of net production (increase in biomass corrected for mortality) to gross production (net production plus oxygen consumption expressed in carbon units). Averaging 33%, the growth yield did not show any trend with temperatures in the range of 8 to 25 degrees C but increased with the concentration of dissolved organic carbon in the range of 2 to 12 mg of C.liter-1.

摘要

在3升反应器中,于不同温度和底物浓度条件下监测天然细菌群落的生长情况。持续监测氧气浓度,并每隔较短时间间隔采集子样本,以确定细菌数量和生物量。还测定了细菌死亡率。细菌生长产量计算为净产量(校正死亡率后的生物量增加量)与总生产量(净产量加上以碳单位表示的氧气消耗量)的比值。生长产量平均为33%,在8至25摄氏度范围内,未随温度呈现任何趋势,但在2至12毫克碳·升-1的溶解有机碳浓度范围内随其增加而增加。

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