The effect of temperature change on metabolism: separating biological and chemical reactions

IF 0.6 Q4 ECOLOGY

Ecological Questions Pub Date : 2022-08-17 DOI:10.12775/eq.2022.040

K. Rychert

引用次数: 0

Abstract

Life-detection experiments carried out in extraterrestrial locations provided inconclusive results whether processes observed were biological or chemical. In this study, the typical effect of temperature on metabolic rates is described and a life-detection method that is easy to perform is proposed. The method comprises observing changes in microbial metabolic rates after temperature shift. The method was demonstrated by experiments on aquatic microorganisms in the Gulf of Gdansk (Baltic Sea). First experiment, in which temperature was shifted within the temperature range encountered at the sampling site, demonstrated a typical Q10 coefficient (2.84). The experiment in which temperature was shifted beyond the environmental temperature range provided an unexpectedly low Q10 coefficient (1.44), which indicated that excessive temperature exerted an inhibitory effect on metabolism. This response is not expected for chemical reactions, but it is typical for biological processes. In summary, a pair of properly-tailored experiments permitted separating biological and chemical reactions.

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温度变化对新陈代谢的影响:分离生物和化学反应

在地外地点进行的生命探测实验对观察到的过程是生物的还是化学的提供了不确定的结果。在本研究中，描述了温度对代谢率的典型影响，并提出了一种易于执行的生命检测方法。该方法包括观察温度变化后微生物代谢率的变化。通过对波罗的海格但斯克湾水生微生物的实验验证了该方法的有效性。在第一个实验中，温度在采样点遇到的温度范围内移动，显示出典型的Q10系数(2.84)。在温度超出环境温度范围的实验中，Q10系数出乎意料地低(1.44)，这表明过高的温度对代谢有抑制作用。这种反应并不适用于化学反应，但它是典型的生物过程。总而言之，一对精心设计的实验允许分离生物和化学反应。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Ecological Questions ECOLOGY-

CiteScore

1.90

自引率

0.00%

发文量

期刊介绍： The fundamental task set by the editors of the journal is to bring together and present a diversity of research connected with ecology. Apart from the traditional ecological research areas, the scope of the journal will embrace more peripheral ecological issues connected with other disciplines of biology. Recognizing the increasing importance of the humanities in ecological research, the editors will strive to give such issues due representation in the journal. We hope to encourage the researchers contributing to the journal to adopt an unconventional approach to solving ecological problems, to go beyond classical, well-established conceptions, and to include methodological and anthropological issues. Such an approach is validated by the intensive development of the sciences bordering on both biology and the humanities that has been observed over recent years.