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Full-Text Articles in Biology

Rules Of Engagement: Interspecies Interactions That Regulate Microbial Communities, Ainslie Little, Courtney Jaime Robinson, S Brook Peterson, Kenneth F. Raffa, Jo Handelsman May 2008

Rules Of Engagement: Interspecies Interactions That Regulate Microbial Communities, Ainslie Little, Courtney Jaime Robinson, S Brook Peterson, Kenneth F. Raffa, Jo Handelsman

Courtney Robinson

Microbial communities comprise an interwoven matrix of biological diversity modified by physical and chemical variation over space and time. Although these communities are the major drivers of biosphere processes, relatively little is known about their structure and function, and predictive modeling is limited by a dearth of comprehensive ecological principles that describe microbial community processes. Here we discuss working definitions of central ecological terms that have been used in various fashions in microbial ecology, provide a framework by focusing on different types of interactions within communities, review the status of the interface between evolutionary and ecological study, and highlight important …


Writing Research Proposal: Literature Review And Database Search, Mamoudou H. Dicko Prof. May 2008

Writing Research Proposal: Literature Review And Database Search, Mamoudou H. Dicko Prof.

Pr. Mamoudou H. DICKO, PhD

The maiden proposed research project should demonstrate that the present study will add a significant knowledge on the subject. The main objective of the literature research is to allow that the statement of the research need will clearly establish the objective of the new study.


Isolation And Characterization Of Vibrio Tubiashii Outer Membrane Proteins And Determination Of A Toxr Homolog, Broderick Eribo Jan 2008

Isolation And Characterization Of Vibrio Tubiashii Outer Membrane Proteins And Determination Of A Toxr Homolog, Broderick Eribo

Broderick Eribo

Outer membrane proteins (OMPs) expressed by Vibrio tubiashii under different environmental growth conditions were characterized by sodium dodecyl sulfate-polyacrylamide gel electrophoresis, N-terminal amino acid sequencing, and PCR analyses. Results showed the presence of a 38- to 40-kDa OmpU-like protein and ompU gene, a maltoporin-like protein, several novel OMPs, and a regulatory toxR homolog.


Temporal Evolution Of Methane Cycling And Phylogenetic Diversity Of Archaea In Sediments From A Deep-Sea Whale Fall In Monterey Canyon (Ca), Shana K. Goffredi, Regina Wilpiszeski, Ray Lee, Victoria J. Orphan Jan 2008

Temporal Evolution Of Methane Cycling And Phylogenetic Diversity Of Archaea In Sediments From A Deep-Sea Whale Fall In Monterey Canyon (Ca), Shana K. Goffredi, Regina Wilpiszeski, Ray Lee, Victoria J. Orphan

Shana Goffredi

Whale-falls represent localized areas of extreme organic enrichment in an otherwise oligotrophic deep-sea environment. Anaerobic remineralization within these habitats is typically portrayed as sulfidogenic; however, we demonstrate that these systems are also favorable for diverse methane-producing archaeal assemblages, representing up to 40% of total cell counts. Chemical analyses revealed elevated methane and depleted sulfate concentrations in sediments under the whale-fall, as compared to surrounding sediments. Carbon was enriched (up to 3.5%) in whale-fall sediments, as well as the surrounding sea floor to at least 10 m, forming a ‘bulls eye’ of elevated carbon. The diversity of sedimentary archaea associated with …


Probiotics: 100 Years (1907-2007) After Elie Metchnikoff's Observations, Kingsley Anukam, Gregor Reid Jan 2008

Probiotics: 100 Years (1907-2007) After Elie Metchnikoff's Observations, Kingsley Anukam, Gregor Reid

Kingsley C Anukam

No abstract provided.