Institut für Biophysik und Physikalische Biochemie and Lehrstuhl für Mikrobiologie, Universität Regensburg, D-8400 Regensburg, Federal Republic of Germany.
Appl Environ Microbiol. 1988 May;54(5):1258-61. doi: 10.1128/aem.54.5.1258-1261.1988.
Temperature and hydrostatic pressure are essential in determining the assemblage of species in their specific biotopes. To evaluate the effect of high pressure on the range of viability of thermophiles, the pressure and temperature dependence of the growth of the methanogenic archaebacterium Methanococcus thermolithotrophicus was investigated. High pressure up to 50 MPa enhanced the growth rate without extending the temperature range of viability. The optimum temperature remained unaltered (65 degrees C). Beyond 50 MPa, cell lysis predominated over cell proliferation. Destabilization was also observed at temperatures below and above the optimum growth temperature (<60 degrees C, >/=70 degrees C) and at low substrate concentrations.
温度和静水压力对于确定物种在其特定生境中的组合至关重要。为了评估高压对嗜热微生物生存范围的影响，研究了产甲烷古细菌 Methanococcus thermolithotrophicus 的生长对压力和温度的依赖性。高达 50 MPa 的高压可提高生长速率，而不会扩大生存范围。最适温度保持不变（65°C）。超过 50 MPa 后，细胞裂解超过细胞增殖。在最适生长温度以下和以上（<60°C，≥70°C）以及在低底物浓度下也观察到了失稳。
