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真核生物的温度上限。

The upper temperature limit for eukaryotic organisms.

作者信息

Tansey M R, Brock T D

出版信息

Proc Natl Acad Sci U S A. 1972 Sep;69(9):2426-8. doi: 10.1073/pnas.69.9.2426.

Abstract

An upper temperature limit near 60 degrees for eukaryotic organisms is documented by results of a systematic search for fungi able to grow at higher temperatures. Samples from hot springs, thermal soils, self-heating coal waste piles, and other natural and man-made heated habitats did not yield fungi when enrichments were done at 62 degrees , whereas fungi able to grow at 55-60 degrees can be readily isolated from such habitats. Earlier work had shown that eukaryotic algae are also absent from environments with temperatures above 55-60 degrees . It is suggested that the failure of eukaryotes to evolve members able to grow at higher temperatures is due to their inability to form organellar membranes that are both thermostable and functional.

摘要

对能够在更高温度下生长的真菌进行系统搜索的结果表明,真核生物的温度上限接近60摄氏度。当在62摄氏度进行富集培养时,来自温泉、热土壤、自热煤矸石堆以及其他天然和人工加热栖息地的样本未培养出真菌,而能够在55 - 60摄氏度生长的真菌则可以很容易地从这些栖息地分离出来。早期的研究表明,温度高于55 - 60摄氏度的环境中也不存在真核藻类。有人提出,真核生物未能进化出能够在更高温度下生长的成员,是因为它们无法形成既耐热又能发挥功能的细胞器膜。

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