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Allison K. Hansen

Assistant Professor

PhD, 2009, University of California, Riverside

Fax: 217-244-3499
Email: akh@illinois.edu

Hansen Lab Website

Allison Hansen

Hansen is interested in ecological and evolutionary genomics of insect-microbe interactions. Her lab's research teases apart the molecular mechanisms that underpin insect-microbe co-evolution using comparative and functional genomics in an evolutionary framework. Broad questions her lab addresses are: how do host and microbe genomes interact with one another? More specifically, which microbe and host genes are important for maintaining the symbioses? Also, which microbe genes are responsible for producing the extended host phenotype that may increase host fitness in certain environments? Her lab uses insect and microbe genomics together with field and laboratory trials to provide novel insights into the complexity and dynamics of insect-microbe symbioses.

Join the lab!

Graduate students interested in joining the lab can be a Master's or Ph.D. student in the Department of Entomology, or as a Master's or Ph.D. student in the Program in Ecology, Evolution and Conservation (PEEC) within the School of Integrative Biology at the University of Illinois. If you would like to apply to my lab as a Post-doc, technician, or graduate student please send me your c.v. , three letters of recommendation, along with a personal research statement via e-mail. Undergraduates interested in acquiring research opportunities in insect symbiont interactions are welcome to contact me by e-mail.

Representative and Recent Publications

Reed, D.A., K.A. Luhring, C.A. Stafford, A.K. Hansen, J.G. Millar, L.M. Hanks, and T.D. Paine 2007. Host defensive response against an egg parasitoid involves cellular encapsulation and melanization. Biological Control 41(2), 214-222..

Hansen, A.K., G. Jeong, T.D. Paine, and R. Stouthamer 2007. Frequency of secondary symbiont infection in an invasive psyllid relates to parasitism pressure on a geographic scale in California. Applied and Environmental Microbiology. Vol. 73, No. 23: 7531-7535.

Mc Donnell, R.J., A. Hansen, T.D. Paine, and M.J. Gormally 2008. A record of the invasive slug, Veronicella cubensis (Pfeiffer, 1840) in California. The Veliger. Vol. 50, No. 2: 81-82.

Hansen, A.K., J.T. Trumble, R. Stouthamer, and T.D. Paine 2008. New Huanglongbing (HLB) Candidatus species,"C. Liberibacter psyllaurous", found to infect tomato and potato is vectored by the psyllid Bactericerca cockerelli (Sulc). Applied and Environmental Microbiology. Vol. 74, No. 18: 5862-5865.

Hansen, A.K., D.L. Six, and Y.K. Ortega 2009. Comparison of ground beetle (Coleoptera: Carabidae) assemblages in Rocky Mountain savannas invaded and un-invaded by an exotic forb, spotted knapweed. Northwest Science. Volume 83 Issue 4: 348�360.

Degnan, P.H., L.S. Bittleston, A.K. Hansen, Z.L. Sabree, N.A. Moran, and R.P. Almeida 2011. Origin and examination of a leafhopper facultative endosymbiont. Current Microbiology. 62(5): 1565-1572.

Six, D.L., M. Poulsen, A.K. Hansen, M.J. Wingfield, J. Roux, P. Eggleton, B. Slippers, and T.D. Paine 2011. Anthropogenic effects on interaction outcomes: examples from insect-microbial symbioses in forest and savanna ecosystems. Symbiosis. 53:101-121.

Hansen, A.K. and N.A. Moran 2011. Aphid genome expression reveals host-symbiont cooperation in the production of amino acids. Proceedings of the National Academy of Sciences USA. January 31, 2011. [Epub ahead of print]

Hansen, A.K., C. Vorburger, and N.A. Moran 2012. Genomic basis of endosymbiont-conferred protection against an insect parasitoid. Genome Research. 22:106-114.

Casteel*, C.L., A.K. Hansen*, L.L. Walling, and T.D. Paine 2012. Manipulation of plant defense responses by the tomato psyllid (Bactericera cockerelli) and its associated endosymbiont Liberibacter psyllaurous. PLoS ONE. 7(4): e35191. [LINK] *Co-first authors - Contributed equally

Moran, N.A., A.K. Hansen, J.E. Powell, and Z.L. Sabree 2012. Distinctive gut microbiota of honey bees assessed using deep sampling from individual worker bees. PLoS ONE. 7(4): e36393. [LINK]

Hansen, A.K. and N.A. Moran 2012. Altered tRNA characteristics and 3' maturation in bacterial symbionts with reduced genomes. Nucleic Acids Research 40(16), 7870-7884.

Sabree, Z.L., A. K. Hansen, and N.A. Moran 2012. Independent studies using deep sequencing resolve the same set of core bacterial species dominating gut communities of honey bees. PLoS ONE 7(7): e41250. [LINK]

Hansen, A.H. and N.A. Moran 2013. The impact of microbial symbionts on host plant utilization by herbivorous insects. Molecular Ecology. Article first published online: 16 AUG 2013. [LINK]