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Forney Lab: Research

WHO WINS AND WHY?

Research done in the laboratory focuses on the ecology of prokaryotic organisms.  The overall aim of the program is to better understand adaptive evolution in various species of Eubacteria and Archaea, and factors that influence the outcome of competition in various habitats.  This is integrated with studies on the diversity found within species, and investigations to characterize the temporal and spatial patterns of diversity in microbial communities.  All of the research projects that are done in some way address the question: "Who wins, and why?"

 
Community Diversity

Culture-independent methods based on the analysis of terminal restriction fragment length polymorphisms of 16S rRNA genes are used to assess spatial and temporal differences in microbial community structure.   This general approach is now followed in studies of normal microflora of the human vagina and vulva, chemosynthetic microbial communities found at "mud volcanoes" of the Mediterranean Sea; nitrogen-fixing cyanobacterial communities in Arctic soils; and communities in geothermal hot springs.

 
Biogeography and Populations Genetics

Genomic fingerprinting and phylogenetic analyses of metabolic genes are used to characterize the biogeography and population genetics of prokaryotes, with a particular emphasis on the genetic diversity found within species and how various chemical and physical characteristics of an environment influence the maintenance of diversity and the spatial patterns observed.

These studies employ rep-PCR genomic DNA fingerprinting to assess differences in genome structure, and data from DNA sequencing of structural genes and are used to assess the phylogeny of populations and genes that may be horizontally transferred.

 

 

 

 

Mutation Rates


In addition, other studies are done to assess the tempo of evolution in prokaryotes, with a focus on understanding the role of genome plasticity (via asexual recombination) and possible regulation of mutation rates in response to changes in cellular growth rate and stress. These studies employ reporter gene fusions to measure the expression of genes involved in genetic recombination and cellular stress response, and genome arrays to compare global patterns of gene expression under various growth conditions.

 

 

Views from around the Lab

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Forney Lab
Department of Biological Sciences

Room 282, Life Sciences Building
University of Idaho
P.O. Box 443051
Moscow, ID 83844-3051
Lab Phone: (208) 885-2583
Email: lforney@uidaho.edu


Updated September 2005
Website enhancements were supported by the NSF-Idaho EPSCoR program and by the National Science Foundation under award number EPS-0132626.