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Mitch Cruzan, Principal Investigator

Current Lab Members:


Alisa Ramakrishnan, PhD candidate

 
 
Evolution and spread of the newly invasive false brome, Brachypodium sylvaticum.
Ramakrishnan, A.P.,  D.M. Rosenthal, T. Musial, and M.B. Cruzan. 2008.  Isolation and characterization of nine microsatellite markers for Brachypodium sylvaticum (Huds.) Beauv., a recently invasive grass species in Oregon.  Molecular Ecology Resources (in press).
 Ramakrishnan, A.P. 2008.  Dispersal-Migration.  In Encyclopedia of Ecology, Elsevier.

 

Tanya Cheeke-Içöz, PhD candidate
Mycorrhizal associations in genetically  modified corn.

 

Diana Jolles, PhD candidate
.Parasitism and phylogeography in Pyrola

 

Paul Sochacki, MS candidate
Mycorrhizal associations in Piriqueta hybrid and parental genotypes.

 

Trieste Musial, MS candidate
Using molecular markers to describe the population genetics of Oregon cougars.

 

Laura Taylor, MS candidate
Habitat invasibilty by false brome, Brachypodium sylvaticum.

 









Gina Marchini, MS candidate
Responses to climate change in invasive false brome, Brachypodium sylvaticum.

Courtney Crawford, Undergraduate Independent Study

Beth Jordan, Undergraduate Independent Study

Mathew LaPlante, Undergraduate Independent Study

Past Lab Members:




Brian Pace, Senior Honor's Thesis completed Winter 2008.
Effects of Nutrient Stress in Genetically Modified Bt Corn: On Infectivity of Mutualistic Vesicular-Arbuscular Mycorrhizal Fungi.
Jennifer Lawson, Senior Honor's Thesis completed Winter 2008. 
Relative Growth Rate in the locally invasive grass Brachypodium sylvaticum.
Kristin Anton, MS completed Winter 2008.  Robert Noyce Scholarship for Science Educators recipient in the PSU certification program.
Anton, K.A., J.M. Rhode, and M.B. Cruzan. 2008. Effects of floral morphology on pollen deposition in a generalist pollination system.(in review).
Heather Machado, MS completed Summer 2007. Fullbright Scholar 2007 - 2008, Corrientes, Argentina.
Machado, H.E., and M.B. Cruzan.  Differential gene expression in response to drought in the Piriqueta caroliniana complex. (in preparation).
David Rosenthal, Post Doctoral Research Associate.  Currently a Research Plant Physiologist, USDA/ARS - UIUC Institute for Genomic Biology.
Rosenthal, D.M., A.P. Ramakrishnan, and M.B. Cruzan. 2008.  Evidence for multiple sources and intraspecific hybridization at early stages of the invasion of Brachypodium sylvaticum (Hudson) Beauv. in North America. Molecular Ecology (in press).
Josh Picotte, Master's completed fall, 2006.  Currently working as a research associate at Tall Timbers Research Station, Tallahassee, FL
Picotte, J.J., D.M. Rosenthal, J.M. Rhode, and M.B. Cruzan. 2007. Plastic responses to temporal variation in moisture availability: consequences for water use efficiency and plant performance. Oecologia 153:821-832.
Picotte, J.J., J.M. Rhode, and M.B. Cruzan. 2008.  Leaf morphological responses to variation in water availability for plants in the Piriqueta caroliniana complex.  Plant Ecology (in press).
Bryan Benz, MS completed Fall, 2006.  Currently working as a Botanist for the Umpqua National Forest.
Benz, B.R., J.M. Rhode, and M.B. Cruzan. 2007. Aerenchyma development and elevated alcohol dehydrogenase activity as alternative responses to hypoxic soils in the Piriqueta caroliniana complex. American Journal of Botany 94: 542-550
Jen Rhode, Post Doctoral Research Associate.  Currently tenure-track faculty at University on North Carlolina at Asheville.
Rhode, J. M., and M. B. Cruzan. 2005. Contributions of heterosis and epistasis to hybrid fitness. The American Naturalist 166:E124-E139
Jon Martin, PSU undergraduate Scholarly and Creative Activity Grant recipient (earned an MS from the Department of Biology, PSU).
SSR marker development and clonal population genetics in Piriqueta..
Katy McQuinn, PSU undergraduate Scholarly and Creative Activity Grant recipient .
Morphological responses to drought and flood conditions in Piriqueta hybrid.
Allison Fortner, National Science Foundation REU student (earned an MS from the University of Oklahoma).
Fitness consequences of cyto-nuclear epistasis in a Piriqueta hybrid zone.

Sara Handy, National Science Foundation REU student (PhD from the University of Delaware.  Currently a post-doc at the University of Maryland).
Patterns of fluctuating asymmetry in Piriqueta hybrids.
g Handy, S.M., K. McBreen, and M.B. Cruzan. 2004. Patterns of fitness and fluctuating asymmetry across a broad hybrid zone. International Journal of Plant Sciences 165: 973-981.

Chuck Price, National Science Foundation REU student (PhD from the University of Arizona; currently a post-doc at the Georgia Institue of Technology).
Patterns of concerted evolution across hybrid Piriqueta populations

Ashley Morris, MS completed (12/00), Department of Botany (Ph.D. from the University of Florida; currently an Assisstant Professor at the University of South Alabama).  
Morris A.B., R.L. Small, and M.B. Cruzan.  2004. Variation in frequency of clonal reproduction among populations of Fagus grandifolia Ehrh. in response to disturbance. Castanea 69:38-51. 
Morris, A.B., R. Baucom, and M.B. Cruzan. 2002. Stratified analysis of the soil seed bank in the cedar glade endemic, Astragalus bibullatus: Evidence for historical changes in genetic structure. American Journal of Botany: 89 29-36.

Morris A.B., R.L. Small, and M.B. Cruzan.  2003.  Investigating the relationship between Cryptococcus fagisuga and Fagus grandifolia in Great Smoky Mountains National Park.  Southeastern Naturalist 1:415-424.

Regina Baucom, undergraduate assistant (PhD from the University of Georgia Department of Genetics; currently a post-doc in the same department).
Landscape genetics of sugar maples in response to logging history.

Baucom, R. S., J. C. Estill, and M. B. Cruzan. 2005. The effect of deforestation on the genetic diversity and structure in Acer saccharum (Marsh): Evidence for the loss and restructuring of genetic variation in a natural system. Conservation Genetics 6:39-50.

Jamie Estill, MS candidate, Department of Botany (Research Technician at the University of Georgia).
Phylogeography of Phacelia fimbriata and Pityopsis ruthii.
Estill, J. C., and M. B. Cruzan. 2001. Phytogeography of rare plant species endemic to the Southeastern United States. Castanea 66:3-23.

Samantha Hopkins, Senior Honor's Thesis completed Spring 2000.  (PhD from the University of California at Berkeley; currently an Assistant Professor at the University or Oregon). 
Annual oscillations in reproductive investment in the iteroparis perennial, Scutellaria montana: A consequence of selection for large inflorescence size?
Lori Martin, MS completed (12/97), Department of Botany.
Martin, L.J. and M.B. Cruzan. 1999. Patterns of hybridization in the Piriqueta caroliniana complex in central Florida: Evidence for an expanding hybrid zone. Evolution: 53:1037-1049. 

Jiongqian (June) Wang, MS completed (6/97), Department of Botany.
Wang, J. and M.B. Cruzan. 1998. Interspecific mating in the Piriqueta caroliniana (Turneraceae) complex: effects of pollen load size and composition. American Journal of Botany: 85:1172-1179.

Amy McCaskill, MS completed (6/97), Department of Entomology and Plant Pathology.
Host race evolution in the Pyralid moth Dicymolomia jullianalis.

Stephanie Maskas, MS completed (6/00), Department of Botany.
Maskas, S.D. and M.B. Cruzan. 2000. Patterns of intraspecific diversification in the Piriqueta caroliniana complex in North America and the Bahamas. Evolution (June 2000).

Maureen Cunningham, PhD completed (12/99), Department of Ecology and Evolutionary Biology.
Demographic trends and host interactions of the rare hemiparasite, Aureolaria patula (Scrophulariaceae).