William B. Walker III

William Walker
As a researcher I have 10 years of professional experience with expertise in molecular biology, including 6 years with genomics/transcriptomics bioinformatics-based data analysis. I have authored or co-authored 25 peer reviewed scientific articles. I am currently working as an Associate Professor in the area of Molecular Chemical Ecology, with a focus on insect pests that damage apple, which is a major crop product in Sweden.


Research Methodology Expertise/Skills

• Whole Transcriptome Shotgun Sequencing (RNA-Seq), bioinformatics analyses of whole transcriptome data, qualitative and quantitative analysis of large data sets, Unix/Command Line programming, R programming

• Molecular cloning, DNA/RNA extraction/purification, end-point PCR, quantitative real-time PCR, RNA interference, fluorescent in situ hybridization and immunocytochemistry, molecular evolution/phylogenetics, insect cell culture, western blots

• Antennal electrophysiology (EAG and SSR), plant volatile headspace extraction, insect behavioral bioassay


Guest Lecturer - Masters Course in Chemical Ecology, SLU-Alnarp

Co-Organizer - 2018 Ph.D. Course in Chemical Ecology, SLU-Alnarp


Associate Professor

Swedish University of Agricultural Sciences, Alnarp, Sweden

10/2017 – Current

Visiting Researcher

Lund University, Lund Protein Production Platform

08/2017 – Current

Scientific Researcher

Swedish University of Agricultural Sciences, Alnarp, Sweden

01/2016 – 10/2017


Research Fellow

Max Planck Institute for Chemical Ecology, Jena, Germany

03/2013 – 12/2015


Postdoctoral Researcher

Lund University, Lund, Sweden

03/2012 – 02/2013


Postdoctoral Researcher

Swedish University of Agricultural Sciences, Alnarp, Sweden

03/2010 – 02/2012


Postdoctoral Researcher

United States Department of Agriculture, Stoneville Mississippi, USA

4/2008 – 02/2010


Ph.D. Research Trainee

Vanderbilt University, Nashville TN, USA

05/2003 - 04/2008


TEDx Folketspark Invited Speaker; Malmö Sweden; May 2017

Supervision of Gymnasietarbete (2016-Current) - Supervision of highschool students on short research projects, who come to SLU to do the projects in our research environment. I have supervised three groups of students on the effects of pestcidies on Spotted Wing Drosophila, Drosophila suzukii. 


Doctorate of Philosophy (Ph.D.) in Neuroscience, 2008

Vanderbilt University, Nashville, TN, USA


Bachelors of Science. in Zoology (Concentration in Genetics), 2002

Michigan State University, East Lansing, Michigan, USA


Publikationer i urval

Select Publications

1) *de Fouchier, A., *Walker III, W.B., Montagné, N., Steiner, C., Binyameen, M., Schlyter, F., Chertemps, T., Maria, A., Francois, M.-C., Monsempes, C., Anderson, P., Hansson, B.S., Larsson, M.C., Jacquin-Joly, E. (2017). “Functional evolution of Lepidoptera olfactory receptors revealed by deorphanization of a moth repertoire”. Nature Communications 8, ncomms15709. * Equal Contributions.

2) Lebreton, S., Borrero-Echeverry, F., Gonzalez, F., Solum, M., Wallin, E.A., Hedenström, E., Hansson, B.S., Gustavsson, A.L., Bengtsson, M., Birgersson, G., Walker, W.B., Dweck, H.K.M., Becher, P., Witzgall, P. (2017). "A Drosophila female pheromone elicits species-specific long-range attraction via an olfactory channel with dual specificity for sex and food". BMC Biology15(1), 88.

3) Walker III, W.B., Gonzalez, F., Garczynski, S.F., Witzgall, P. (2016). “The chemosensory receptors of codling moth Cydia pomonella – expression in larvae and adults. Scientific Reports. 6, 23518.

4) Gonzalez, F., Witzgall, P., Walker III, W.B. (2016). “Protocol for heterologous expression of insect odourant receptors in Drosophila.” Frontiers in Ecology and Evolution. 4: 24.

5) Zhang, J., Walker, W.B., Wang, G. (2015) “Pheromone Reception in Moth: from molecules to behaviors.” Progress in Molecular Biology and Translational Science: Molecular Basis of Olfaction. 130: 109-128.

6) Roy, A., Walker III, W.B., Vogel H., Chattington, S., Larsson, M., Anderson, P., Heckel, D., Schlyter, F. (2016). "Diet dependent metabolic responses in three generalist insect herbivores Spodoptera spp.” Insect Biochemistry and Molecular Biology. 71: 91-105.

7) Bengtsson, J.M., Gonzalez, F., Cattaneo, A.M., Montagné, N., Walker, W.B., Bengtsson, M., Anfora, G., Ignell, R., Jacquin-Joly, E., Witzgall, P. (2014). “A predicted sex pheromone receptor of codling moth Cydia pomonella detects the plant volatile pear ester.” Frontiers in Ecology and Evolution. 2: 33. 

8) Allen, M.L., Walker III, W.B. (2011). “Saliva of Lygus lineolaris digests double stranded ribonucleic acids.” Journal of Insect Physiology. 58(3): 391-396.

9) Walker III, W.B., Allen, M.L. (2011). “RNA interference mediated knockdown of IAP1 in Lygus lineolaris induces mortality in adult and pre-adult stages.” Entomologia Experimentalis et Applicata. 138(2): 83-92. 

10) Walker, W. B., Allen, M.L. (2010). Expression and RNA interference of salivary polygalacturonase genes in Lygus lineolaris (Miridae: Hemiptera). Journal of Insect Science. 10:.). 

11) Walker III, W.B., Jacquin-Joly, E., Hill, S.R. (2016). “Editorial: Functional Characterization of Insect Chemoreceptors: Receptivity Range and Expression.” Frontiers in Ecology and Evolution. 4:37.


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Extern resurs vid Institutionen för växtskyddsbiologi
Telefon: +4640-415228
Växtskyddsbiologi, Box 102
23053 Alnarp
Besöksadress: Sundsvägen 16, Alnarp