溶解氧浓度对浮游球衣菌生理生态学的影响

The influence of the dissolved oxygen concentration on the physiology and ecology of Sphaerotilus natans Kütz.

作者信息

Mechsner Kl

机构信息

Swiss Federal Institute of Technology, Zürich, Switzerland.

Federal Institute for Water Resources and Water Pollution Control, CH-8600, Dübendorf, Switzerland.

出版信息

Oecologia. 1983 Oct;60(1):18-20. doi: 10.1007/BF00379314.

DOI:10.1007/BF00379314

PMID:28310528

Abstract

Using a hermetically closed experimental system the influence of continuously decreasing oxygen concentration on the metabolism of Sphaerotilus natans was investigated by concurrently measuring the temperature, pH, oxygen, sucrose, organic acids, diluted organic carbon (DOC) and dry weight.Oxygen and sucrose were eliminated linearly until the detection limit of <0,1 mg O/l for dissolved oxygen concentration was reached. Under anaerobic conditions neither sucrose uptake nor organic acid formation occured and autolytic processes were evident. The results confirm that Sphaerotilus natans is an aerobic organism with no capacity for fermentative metabolism.

摘要

使用一个密闭的实验系统，通过同时测量温度、pH值、氧气、蔗糖、有机酸、溶解性有机碳（DOC）和干重，研究了不断降低的氧气浓度对浮游球衣菌代谢的影响。氧气和蔗糖呈线性减少，直到溶解氧浓度达到<0.1 mg O/l的检测极限。在厌氧条件下，既不发生蔗糖摄取也不形成有机酸，自溶过程明显。结果证实，浮游球衣菌是一种需氧生物，没有发酵代谢能力。