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- Defining daily, seasonal and annual changes in gene expression in conifers (the Douglas-fir Transcriptome Observatory)
- Linking spatial genetic differentiation in Port-Orford Cedar to migration, climatic and selective pressure from pathogens.
- Defining the recent colonization history of Yellow Cedar across SE Alaska
- Developing genetic markers for plants and animals of management concern.
- studying the genetic basis of adaptation through the integration of genomic (transcriptomic) and quantitative variation
- studying the population and evolutionary genetic history of North American members of the pine family
- defining mutation rates in conifers to understand their significance in adaptive processes
- defining patterns of neutral differentiation as a foundation for understanding quantitative variation in restoration plant species.
- population and evolutionary genetics of wild cottons
- gene evolution and gene expression in polyploid plant genomes
- biochemistry of antiretroviral agents targeting immune deficiency viruses
Why This Research is Important
Genes -- the DNA codes present in all living organisms -- are the basis of adaptive traits that make species resilient to a changing climate and an array of diseases. The genes of plants are poorly understood, and this is especially true for genes that help plants adapt to changes in seasonal and annual weather. This research applies new genomics methods to address a fundamental question: What genes do plants use to sense seasonal changes in light quality, temperature, and water availability? By defining genes that have a large impact on growth and health, we can use this information to guide breeding methods and plant selections that result in broadly adapted trees that contribute to resilient forest communities.
- Iowa State University, Ph.D. Genetics Evolutionary and population genetics, 1997
Featured Publications & Products
- Cronn, Richard; Knaus, Brian J.; Liston, Aaron; Maughan, Peter J.; Parks, Matthew; Syring, John V.; Udall, Joshua. 2012. Targeted enrichment strategies for next-generation plant biology.
- Howe, Glenn R.; Yu, Jianbin; Knaus, Brian; Cronn, Richard; Kolpak, Scott; Dolan, Peter; Lorenz, W. Walter; Dean, Jeffrey F.D. 2013. A SNP resource for douglas-fir: de novo transcriptome assembly and SNP detection and validation.
- Knaus, Brian J.; Cronn, Richard; Liston, Aaron; Pilgrim, Kristine; Schwartz, Michael K. 2011. Mitochondrial genome sequences illuminate maternal lineages of conservation concern in a rare carnivore.
- Johnson, Randy; Stritch, Larry; Olwell, Peggy; Lambert, Scott; Horning, Matthew E.; Cronn, Richard. 2010. What are the best seed sources for ecosystem restoration on BLM and USFS lands?.
Publications & Products
- Njunguna, Wambui; Liston, Aaron; Cronn, Richard; Ashman, Tia-Lynn; Bassil, Nahla. 2013. Insights into phylogeny, sex function and age of Fragaria based on whole chloroplast genome sequencing.
- Rai, Hardeep S.; Mock, Karen E.; Richardson, Bryce A.; Cronn, Richard C.; Hayden, Katherine J.; Wright, Jessica W.; Knaus, Brian J.; Wolf, Paul G. 2013. Transcriptome characterization and detection of gene expression differences in aspen (Populus tremuloides).
- Ross-Davis, A. L.; Stewart, J. E.; Hanna, J. W.; Kim, M.-S.; Knaus, B. J.; Cronn, R.; Rai, H.; Richardson, B. A.; McDonald, G. I.; Klopfenstein, N. B. 2013. Transcriptome of an Armillaria root disease pathogen reveals candidate genes involved in host substrate utilization at the host-pathogen interface.
- Hayden, Katherine J.; Garbelotto, Matteo; Fai, Hardeep; Knaus, Brian; Cronn, Richard; Wright, Jessica W. 2012. Gene expression in the tanoak-Phytophthora ramorum interaction.
- Alexander, Alana; Steel, Debbie; Slikas, Beth; Hoekzema, Kendra; Carraher, Colm; Parks, Matthew; Cronn, Richard; Baker, C. Scott. 2012. Low diversity in the mitogenome of sperm whales revealed by next-generation sequencing.
- Magbanua, Zenaida V.; Ozkan, Seval; Bartlett, Benjamin D.; Chouvarine, Philippe; Saski, Christopher A.; Liston, Aaron; Cronn, Richard C.; Nelson, C. Dana; Peterson, Daniel G. 2011. Adventures in the enormous: a 1.8 million clone BAC library for the 21.7 Gb genome of loblolly pine.
- Straub, Shannon C.K.; Fishbein, Mark; Livshult, Tatyana; Foster, Zachary; Parks, Matthew; Weitemier, Kevin; Cronn, Richard C.; Liston, Aaron. 2011. Building a model: developing genomic resources for common milkweed (Asclepias syriaca) with low coverage genome sequencing.
- Parks, Matthew; Liston, Aaron; Cronn, Rich. 2011. Newly developed primers for complete YCF1 amplification in Pinus (Pinaceae) chloroplasts with possible family-wide utility.
- Bajgain, Prabin; Richardson, Bryce A.; Price, Jared C.; Cronn, Richard C.; Udall, Joshua A. 2011. Transcriptome characterization and polymorphism detection between subspecies of big sagebrush (Artemisia tridentata).
- Zapiola, Maria L.; Cronn, Richard C.; Mallory-Smith, Carol A. 2010. Development of novel chloroplast microsatellite markers to identify species in the Agrostis complex (Poaceae) and related genera..
- Whittall, J.B.; Syring, J.; Parks, M.; Buenrostro, J.; Dick, C.; Liston, A.; Cronn, R. 2010. Finding a (pine) needle in a haystack: chloroplast genome sequence divergence in rare and widespread pines.
- Njuguna, W.; Liston, A.; Cronn, R.; Bassil, N.V. 2010. Multiplexed fragaria chloroplast genome sequencing.
- Parks, Matthew; Cronn, Richard; Liston, Aaron. 2009. Increasing phylogenetic resolution at low taxonomic levels using massively parallel sequencing of chloroplast genomes.
- Hersch-Green, Erika l.; Cronn, Richard. 2009. Tangled trios? Characterizing a hybrid zone in Castilleja (Orobanchaceae).
- Cronn, Richard; Liston, Aaron; Parks, Matthew; Gernandt, David S.; Shen, Rongkun; Mockler, Todd. 2008. Multiplex sequencing of plant chloroplast genomes using Solexa sequencing-by-synthesis technology.
- Syring, John; del Castillo, Rafael F.; Cronn, Richard; Liston, Aaron. 2007. Multiple nuclear loci reveal the distinctiveness of the threatened, Neotropical Pinus chiapensis.
- Horning, Matthew E.; Cronn, Richard C. 2006. Length polymorphism scanning is an efficient approach for revealing chloroplast DNA variation..
- Syring, John; Willyard, Ann; Cronn, Richard; Liston, Aaron. 2005. Evolutionary relationships among Pinus (Pinaceae) subsections inferred from multiple low-copy nuclear loci..
- Johnson, GR; Sorensen, Frank C; St Clair, J Bradley; Cronn, Richard C. 2004. Pacific Northwest forest tree seed zones: a template for native plants?.
- Wendel, Jonathan F.; Cronn, Richard C.; Jonhston, J. Spencer; Price, H. James. 2002. Feast and famine in plant genomes..
- Cronn, Richard C.; Cedroni, M.; Haselkorn, T.; Grover, C.; Wendel, Jonathan F. 2002. PCR-mediated recombination in amplification products derived from polyploid cotton..
- Cronn, Richard C.; Small, Randall L.; Hanselkorn, Tamara; Wendel, Jonathan F. 2002. Rapid diversification of the cotton genus (Gossypium: Malvaceae) revealed by analysis of sixteen nuclear and chloroplast genes..
- Cronn, Richard C.; Small, Randall L.; Wendel, Jonathan F. 1999. Duplicated genes evolve independently in allopolyploid cotton..
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