Department of Biological Sciences
Program in Ecology and Evolution
University of Illinois at Chicago
SEL 1016 M/C 067
840 West Taylor Street
Chicago, IL 60607
B.S. Biology, University Paul Sabatier (Toulouse, France), 2004
M.S. Ecology, University Paul Sabatier (Toulouse, France) / University of Wisconsin (Madison), 2005
M.S. Ecology, Evolution, Behavior, University of Rennes 1 (Rennes, France), 2007
Polyploidy, Systematics, Phylogenetics and Biogeography of Elymus (Poaceae).
Patterns of Gene Expression and Silencing in North American Elymus (Triticeae: Poaceae) Allotetraploids
Elymus L., is the largest and most widely distributed genus in the wheat tribe Triticeae (Poaceae). This genus is an exclusively allopolyploid group, characterized by huge morphological variation within and between species. Cytologically, five basic genomes, designated S, H, Y, P and W are found within the genus, in a variety of combinations. Cytogenetic and phylogenetic data confirms that nearly all North American species contain a maternal (S) genome from Pseudoroegnaria and paternal (H) genome from Hordeum, in a tetraploid combination StStHH.
My research will focus on investigating patterns of gene expression and gene silencing in natural North American populations of Elymus with the following objectives: (1) examine the relative expression and silencing of selected genes in North American Elymus species in different organ types of each individual plant, and during different developmental stages; (2) examine gene expression and silencing patterns in multiple independently created synthetic allotetraploid lines of Elymus and compare the results with the observed patterns of gene silencing in natural populations; (3) compare overall patterns of gene expression and silencing of North American samples and those from Europe with the same genomic composition (e.g. StStHH).
University of Illinois at Chicago, Biology of Populations and Communities, fall 2007; spring 2008