Prokaryotes stimulate mineral H2 formation for the deep biosphere and subsequent thermogenic activity
Prokaryotes stimulate mineral H2 formation for the deep biosphere and subsequent thermogenic activity
复制标题
原核生物刺激深层生物圈矿物质 H2 的形成以及随后的产热活动
作者:
Parkes R
The deep subseafloor biosphere contains two-thirds of Earth's prokaryotic biomass, which may indicate the presence of novel mechanisms of energy generation as temperatures increase in the subsurface. In sediment slurry experiments (0–100 °C) with a range of common minerals and rocks (including basalt and quartz), there is significant H2formation at elevated temperatures, but only in the presence of prokaryotes. This stimulates further prokaryotic activity, typical of deep sediments (sulfate reduction, acetogenesis, and CO2production, plus continuing methanogenesis), andBacteriaandArchaearepresentative of many deep sediment types develop. H2and acetate formation is particularly stimulated above 70 °C. This prokaryotic activity even enhances reactions when temperatures are raised to thermogenic levels (∼125–155 °C), including hydrocarbon generation. Mechanochemistry may be important for mineral H2formation; this is enhanced by prokaryotes (biomechanochemistry), and subsurface stress and fracturing, which is widespread on Earth.
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影响因子:
4.2
作者:
N. Sleep;M. Zoback
通讯作者:
M. Zoback
影响因子:
56.9
作者:
S. Biggin
通讯作者:
S. Biggin
DOI:
10.1073/pnas.95.12.6578
发表时间:
1998-06-09
影响因子:
11.1
作者:
Whitman, WB;Coleman, DC;Wiebe, WJ
通讯作者:
Wiebe, WJ
影响因子:
2.2
作者:
T. Nunoura;F. Inagaki;M. Delwiche;F. Colwell;K. Takai
通讯作者:
T. Nunoura;F. Inagaki;M. Delwiche;F. Colwell;K. Takai
DOI:
--
发表时间:
1989
期刊:
影响因子:
--
作者:
R. Parkes;G. Gibson;I. Mueller;W. Buckingham;R. Herbert
通讯作者:
R. Herbert