Re: [問題]問一篇研究的重要性
※ 引述《boblu.bbs@beta.life.nthu.edu.tw (六百)》之銘言：
> http://udn.com/NEWS/NATIONAL/NAT5/3567269.shtml
> 還沒抓到全文
> 偷懶上來問一下有沒有人已經看過了？
> 就媒體的介紹來說實在看不太出個所以然
> 以硫化物為能量來源的生物不是早被發現了嗎？ 課本裡都有了...
> 這篇的突破又在哪裡呢？
> 是因為另一個不同的代謝路徑 或者是說因為整個生物群系都如此
> 或者是因為是一個幾乎封閉的環境？
Hyperthermophile嗎? Pyrolobus fumarii嗎? 有興趣的人可以比較一下以下兩篇
(第一篇為本期Science的摘要, 也就是新聞裡所述的文章)
http://www.sciencemag.org/cgi/content/abstract/314/5798/479
Science 20 October 2006: Vol. 314. no. 5798, pp. 479 - 482
Long-Term Sustainability of a High-Energy, Low-Diversity Crustal Biome
Li-Hung Lin,1,2* Pei-Ling Wang,3 Douglas Rumble,4 Johanna Lippmann-Pipke,5
Erik Boice,6 Lisa M. Pratt,6 Barbara Sherwood Lollar,7 Eoin L. Brodie,8 Terry
C. Hazen,8 Gary L. Andersen,8 Todd Z. DeSantis,8 Duane P. Moser,9 Dave
Kershaw,10 T. C. Onstott1
Geochemical, microbiological, and molecular analyses of alkaline saline
groundwater at 2.8 kilometers depth in Archaean metabasalt revealed a
microbial biome dominated by a single phylotype affiliated with thermophilic
sulfate reducers belonging to Firmicutes. These sulfate reducers were
sustained by geologically produced sulfate and hydrogen at concentrations
sufficient to maintain activities for millions of years with no apparent
reliance on photosynthetically derived substrates.
http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=search&term=10376671
FEBS Lett. 1999 Jun 4;452(1-2):22-5
Minireview: Extremophiles and their adaptation to hot environments.
Stetter KO.
Water-containing terrestrial, subterranean and submarine high temperature
areas harbor a variety of hyperthermophilic bacteria and archaea which are
able to grow optimally above 80 degrees C. Hyperthermophiles are adapted to
hot environments by their physiological and nutritional requirements. As a
consequence, cell components like proteins, nucleic acids and membranes have
to be stable and even function best at temperatures around 100 degrees C. The
chemolithoautotrophic archaeon Pyrolobus fumarii is able to grow at 113
degrees C and, therefore, represents the upper temperature border of life.
For the first time, (vegetative) cultures of Pyrolobus and Pyrodictium are
able to survive autoclaving.
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