Molecular Phylogeny of Archaea from "non-extreme"Environments
- Editore:
VDM Verlag Dr. Müller e.K.
- EAN:
9783639090543
- ISBN:
3639090543
- Pagine:
- 84
- Formato:
- Paperback
- Lingua:
- Tedesco
Descrizione Molecular Phylogeny of Archaea from "non-extreme"Environments
Despite our increasing knowledge of the scale ofmicrobial diversity, most microbes observed innatural environments remain uncultivated, theirecology and functional roles are unknown and ourunderstanding of the composition of the naturalmicrobial world is therefore rudimentary. However,modern molecular methods provide an easy way ofsurveying microbial biodiversity using ribosomal RNAgene sequences retrieved directly from theenvironment. The most significant finding from theapplication of such new approaches was the discoveryof high numbers of novel archaeal phenotypes. Before,it was considered that Archaea were restricted tospecialized "extreme" environments characterized byhigh temperature, salinity, pH, or strict anoxic.Over the last decade, a ubiquitous distribution of"non-extreme" Archaea in a wide variety of temperateand cold terrestrial and aquatic environments wasdemonstrated. The results presented in this thesisinclude the discovery of unexpected and new Archaeain boreal forest soil, freshwater forest lake andtemperate estuarine sediment samples. We suggest thatArchaea are ecologically much more successful andglobally important than previously thought.
