Biology
Scientific paper
Nov 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002esasp.518..137c&link_type=abstract
In: Proceedings of the First European Workshop on Exo-Astrobiology, 16 - 19 September 2002, Graz, Austria. Ed.: Huguette Lacoste
Biology
1
Organic Matter: Origin
Scientific paper
The current preponderance of geological and geochemical evidence favours a warm to hot Earth during the first few hundred million years after accretion. Nowadays, volcanic areas, essentially unchanged for at least 4.3 Ga, are populated by hyperthermophilic microorganisms, the majority belonging to the domain Archaea. Most Archaea live in almost any environmental niches previously thought of as insurmountable physical and chemical barriers to life. These findings expanded what we considered the limits of life stimulating the exobiological research area and increasing the likelihood that life could have evolved in planets considered totally inhospitable. The study of the biology of Archaea can provide useful answers to questions concerning the chemical-physical conditions that are compatible with the mechanisms of abiogenesis and the evolution of early life. In this framework, our group is involved since a long time in the study of hyperthermophilic Archaea. We faced some crucial questions dealing with the biology of these organisms like: was the last universal common ancestor (LUCA) a (hyper)thermophile? How are Archaea phylogenetically related to the other domains of living organisms regarding DNA replication, transcription and gene organization? How can withstand DNA and proteins of hyperthermophiles to high temperatures? We here report on recent advances we obtained on these aspects.
Carpentieri Floriana
Ciaramella Maria
Cobucci-Ponzano Beatrice
de Falco Rosaria M.
de Felice Mariarita
No associations
LandOfFree
Hyperthermophilic Archaea as model systems to study origin and evolution of early organisms does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Hyperthermophilic Archaea as model systems to study origin and evolution of early organisms, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hyperthermophilic Archaea as model systems to study origin and evolution of early organisms will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-739077