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Microbial Analysis and Isolation of Iron-Reducing Bacteria from Marquez Crater, TX, USA
Başlık:
Microbial Analysis and Isolation of Iron-Reducing Bacteria from Marquez Crater, TX, USA
Yazar:
Baviskar, Manish Dnyaneshwar, author.
ISBN:
9780438137806
Yazar Ek Girişi:
Fiziksel Tanımlama:
1 electronic resource (57 pages)
Genel Not:
Source: Masters Abstracts International, Volume: 57-06M(E).
Advisors: T. Thuy Minh Nguyen Committee members: Paul Bernazzani; Xiangyang Lei.
Özet:
Meteoroid impacts are considered crucial events in the history of planets as well as in the universe. These impacts are also responsible for changes in the evolution of organisms. The initial effect of meteoroid impact is catastrophic but after a certain period of time, novel bacterial species establish in the unique environment of a crater ecosystem. The Marquez crater is a buried and complexed meteoroid impact crater located in Texas, USA. Geophysical and geochemical gradients caused by the impact influenced the microbial diversity.
The purpose of this research is the microbial assessment of the Marquez crater on the basis of viable heterotrophs (aerobes, anaerobes and yeast and molds), chemotrophs (iron reducing bacteria) and indicator bacteria. We determined the microbial distribution, the ecological richness and the level of microbial contaminants in the crater environment caused by human activities. Data show that populations of viable heterotrophic aerobes present remarkable differences in lateral distribution and gradually decreased from the outer edge of the crater to the center while viable chemotrophs showed the opposite pattern. Novel magneto tactic bacterial species were isolated from sediments in this region, cultivated and enriched. We optimized the growth characteristics of these magneto tactic bacteria and achieved higher cell density and magnetosome yield.
Notlar:
School code: 0424
Tüzel Kişi Ek Girişi:
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Yer Numarası | Demirbaş Numarası | Shelf Location | Lokasyon / Statüsü / İade Tarihi |
---|---|---|---|
XX(693045.1) | 693045-1001 | Proquest E-Tez Koleksiyonu | Arıyor... |
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