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- 870Biological Sciences, Department of/Journal Articles (Biological Sciences)
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- 419University of Alberta, Department of Biological Sciences
- 138Sawchuk, Matthew
- 81Mark A. Lewis
- 53Lewis, Mark A.
- 52Stockey, R.A.
- 23Wishart, D.S.
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Characterization of the cold stress-induced cyanobacterial DEAD-box protein CrhC as an RNA helicase
Download2000
Owttrim, George W., Yu, Esther
We have shown previously that CrhC is a unique member of the DEAD-box family of RNA helicases whose expression occurs specifically under conditions of cold stress. Here we show that recombinant His-tagged CrhC, purified from Escherichia coli, is an ATP-independent RNA binding protein possessing...
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Characterizing the physical and genetic structure of the lodgepole pine × jack pine hybrid zone: mosaic structure and differential introgression
Download2012-01-01
Coltman, David W., James, Patrick M. A., Cullingham,Catherine I., Cooke, Janice E. K.
Understanding the physical and genetic structure of hybrid zones can illuminate factors affecting their formation and stability. In north-central Alberta, lodgepole pine (Pinus contorta Dougl. ex Loud. var. latifolia) and jack pine (Pinus banksiana Lamb) form a complex and poorly defined hybrid...
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Characterizing vegetation structural and topographic characteristics sampled by eddy covariance within two mature aspen stands using lidar and a flux footprint model: Scaling to MODIS
Download2011
Kljun, N., Hopkinson, C., Giroux, K., Petrone, R., Chasmer, L., Milne, T., Devito, K., Creed, I., Barr, A.
In this study, a Boolean classification was applied using novel methods to 3-D vegetation structural and topographic attributes found within flux footprint source/sink areas measured by eddy covariance instrumentation. The purpose was to determine if the spatial frequency of 3-D attributes, such...
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Chemical similarity between historical and novel host plants promotes range and host expansion of the mountain pine beetle in a naïve host ecosystem
Download2013-01-01
Evenden, Maya, Shan, Bin, Ma, Cary, Najar, Ahmed, Erbilgin, Nadir, Whitehouse, Caroline
Host plant secondary chemistry can have cascading impacts on host and range expansion of herbivorous insect populations. We investigated the role of host secondary compounds on pheromone production by themountain pine beetle (Dendroctonus ponderosae) (MPB) and beetle attraction in response to a...
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2005
Li, S., Dai, M., He, X., Zhang, Y., Ruan, J., Burt, D., Yu, J., Wang, J., Yang, H., Hu, Y., Liu, B., Wong, G., Ye, C., Chen, J., Cong, L., Fang, L.
Working in parallel with the efforts to sequence the chicken (Gallus gallus) genome, the Beijing Genomics Institute led an international team of scientists from China, USA, UK, Sweden, The Netherlands and Germany to map extensive DNA sequence variation throughout the chicken genome by sampling...
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Chk1 and Wee1 kinases coordinate DNA replication, chromosome condensation and anaphase entry
Download2012
Campbell, S.D., Homola, E.M., Fasulo, B., Yu, K.R., Hsieh, T.S., Sullivan, W., Koyama, C.
Defects in DNA replication and chromosome condensation are common phenotypes in cancer cells. A link between replication and condensation has been established, but little is known about the role of checkpoints in monitoring chromosome condensation. We investigate this function by live analysis,...
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2013-01-01
Merrill, E., Lewis, Mark A., Pybus, M., Potapov, A., Coltman, D.
We develop a model for the spread of chronic wasting disease (CWD) in a mule deer (Odocoileus hemionus) population to assess possible mechanisms of disease transmission and parameterize it for the mule deer population in Alberta, Canada. We consider seven mechanisms of disease transmission...
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2016-01-01
Potapov, Alex, Merrill, Evelyn, Pybus, Margo, Lewis, Mark A.
We develop a model of CWD management by nonselective deer harvest, currently the most feasible approach available for managing CWD in wild populations. We use the model to explore the effects of 6 common harvest strategies on disease prevalence and to identify potential optimal harvest policies...
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2004-01-01
Predictions for climate change include movement of temperature isoclines up to 1000 meters per year, and this is supported by recent empirical studies. This paper considers effects of a rapidly changing environment on competitive outcomes between species. The model is formulated as a system of...
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Climate and nutrient influences on the growth of white spruce trees in the boreal forests of the Yukon
Download2008
Krebs, C.J., Boonstra, R., Desantis, L., Hik, D.S.
The boreal forests of North America are undergoing major changes because of the direct effects of global warming and increased CO2 levels. Plant production in the boreal forest is nutrient limited, and we examined how long-term fertilization affected growth of white spruce Picea glauca in the...