Li Paetzold

Senior Research Associate
6500 Amarillo Blvd. West
Amarillo, TX 79106
Office: (806) 354-5822
lpaetzold@ag.tamu.edu

Education

B.S., Medical Administration, Shenyang Pharmaceutical University, Shenyang, China
M.S., Biotechnology, Texas A&M University, College Station, TX

Experience

Research Associate (March 2007 – April 2010) Gene Technologies Laboratory, Biology Department, Texas A&M University
Research Associate (April 2010 – May 2015) Plant Pathology Department, Texas A&M AgriLife Research and Extension Center
Senior Research Associate (May 2015 – Present) Plant Pathology Department, Texas A&M AgriLife Research and Extension Center

Current Objective

  1. Conduct Texas Zebra Chip Disease survey and diagnosis, including receiving and testing of samples, sending weekly results, and writing official reports to the funding resource agency.
  2. Design and conduct experiments in support of various research projects, including determination of best experimental approaches to use for specific tasks, and use of appropriate methodology to provide optimum experimental results.
  3. Analyze data, prepare reports and collaborate in writing and preparation of research results for publication in referred journals.

Referred Publications

Rashed, A., C. M. Wallis, Workneh, F., Paetzold, L. and Rush, C. M. 2016. Variations in Zebra Chip   disease expression and tuber biochemistry in response to vector density. Phytopathology 106:854-860.

Workneh, F. Rashed, A., Paetzold, L, and Rush, C.M. 2016. Population dynamics of released potato psyllids and their bacteriliferous status in relation to disease incidence in caged field plots. Plant Disease 100:1762-1767.

Rashed, A. Workneh, F., Paetzold, L. and Rush, C.M. 2015. Emergence of ‘Candidatus Liberibacter solanacearum’-infected seed potatoes in relation to the time of infection. Plant Disease. 99: 274 – 280.

Rashed, A., Paetzold. L., Workneh, F., Rush, C.M. 2015. Patterns on potato psyllid appearance in non-cultivated vagetation in relation to potato emergence time. Journal of Economic Entomology. (in preparation)

Rashed, A., Wallis C.M. Paetzold, L. Woodell, Olsen, N., Workneh, F., Rashidi, M., Rush, C.M. 2015. Candidatus Liberibacter solanacearum development in Russet Norkotah under commercial storage conditions. Plant Disease. (in preparation)

Rashed, A., Wallis, C.M., Workneh, F., Paetzold, L., Rush, C.M. 2015. The impact of potato psyllid vector density on Zebra Chip symptoms in tubers. Applied and Environmental Microbiology. (in preparation)

Wallis, C. M., Rashed, A., Wallingford, A. K., Chen, J., Paetzold, L., Workneh, F., and Rush, C. M. 2015. Effects of potato psyllid-vectored ‘Candidatus Liberibacter solanacearum’ infection on potato leaf and stem physiology. Phytopathology. 105: 189 – 198.

Workneh, F. Paetzold, L., Rashed, A., and Rush, C. M. 2015. Monitoring of different densities of psyllids for their Lso status and corresponding impact on zebra chip incidence in caged field plots. Journal of Economic Entomology 108:XX. (in preparation)

Workneh, F., Paetzold, L., Rashed, A., and Rush, C. M. 2015. Population dynamics of potato psyllid haplotypes in natural vegetation in West Texas. Environmental Entomology 44:XX. (in preparation)

Rashed, A., Workneh, F., Paetzold, L., Gray, J., and Rush, C.M. 2014. Zebra chip disease development in relation to plant age and time of ‘Candidatus Liberibacter solanacearum’ infection. Plant Disease. 98:24-31.

Rashed, A., C.M. Wallis, L. Paetzold, F. Workneh, and C. M. Rush. 2013. Zebra Chip disease and potato biochemistry: Tuber physiological changes in response to ‘Candidatus Liberibacter solanacearum’ infection throughout the season. Phytopathology 103: 419 – 426.

Wallis, C., Rashed, A., Wallingford, A., Rush, C., Workneh, F., and Paetzold, L. 2013. Similarities and Differences in Physiological Responses to ‘Candidatus Liberibacter solanacearum’ Infection among Different Potato Cultivars. Phytopathology. 104: 126 – 133.

Workneh, F., Henne, D. C., Goolsby, J. A., Crosslin, J. M., Whipple, S. D., Bradshaw, J. D., Rashed, A., Paetzold, L., Harveson, R. M., and Rush, C. M. 2013. Characterization of management and environmental factors associated with regional variations in potato zebra chip occurrence. Phytopathology 103: 1235-1242.

Rashed, A., D. Nash, L. Paetzold, F. Workneh, and C. M. Rush. 2012. Transmission efficiency of Candidatus Liberibacter solanacearum and potato zebra chip disease progress in relation to pathogen titer, vector numbers and feeding sites. Phytopathology. 102: 1079 – 1085.

Workneh, F., D.C. Henne, A.C. Childers, L. Paetzold, and C.M. Rush. 2012. Assessments of Edge Effect in Incidence of Potato Zebra Chip Disease. Plant Disease 96: 943 – 947.

Edward J. Cargill, Li Paetzold, and James E. Womack was published in DNA Sequence 2006;  00(0): 1-5. Radiation Hybrid Mapping and Comparative Sequence Analysis of Bovine RIG-I and MAVS.

Proceedings

Paetzold, L., Rashed, A., Workneh, F., and Rush, C.M. 2014. Temporal and spatial variation of psyllid haplotype occurring in indigenous vegetation of Texas. 14th Annual SCRI ZC Reporting Session. Portland, OR. Nov. 9, 2014.

Rashed, A., Wallis, C.M., Paetzold, L., Woodell, L., Olsen, N., Workneh, F., Rashidi, M., Wenninger, E.J., and Rush, C.M. 2014. ‘Candidatus Liberibacter solanacearum’ development in Russet Norkotah under commercial storage conditions. 14th Annual SCRI ZC Reporting Session. Portland, OR. Nov. 9, 2014.

Rush, C.M., Workneh, F., Paetzold, L., Olsen, N., Henne, D., and Rashed, A. 2014. Impact of vine-kill on Lso and zebra chip symptom development in tubers following late season psyllid infestations. 14th Annual SCRI ZC Reporting Session. Portland, OR. Nov. 9, 2014.

Villanueva, R., Esparza ,G., Henne, D., Paetzold, L., and Rush, C.M. 2014. The Mexican conundrum of hot potato psyllids: commercial hosts, and surveyed sites. 14th Annual SCRI ZC Reporting Session. Portland, OR. Nov. 9, 2014.

Workneh, F., Henne, D., Paetzold, L., Warfield, B., Silva, A., Bradshaw, J., and Rush, C.M. 2014. Psyllid survey results for 2014. 14th Annual SCRI ZC Reporting Session. Portland, OR. Nov. 9, 2014.

Workneh, F., Henne, D.C., Bradshaw, J., Paetzold, L., and Rush, C.M. 2014. Progress in regional assessments of zebra chip incidence and associated factors. 14th Annual SCRI ZC Reporting Session. Portland, OR. Nov. 9, 2014.

Rashed, A., Wallis, C.M., Wallingford, A.K., Workneh, F., Paetzold, L., and Rush, C.M. 2013. Potato psyllid vector density and zebra chip disease. In: Proceedings of the 13th Annual SCRI Zebra Chip Reporting Session (eds. F. Workneh and C.M. Rush). Pg. 136-140. Frederic Printing, Aurora, CO.

Rush, C.M., Workneh, F., Paetzold, L., and Rashed, A. 2013. Impact of initial psyllid population density on pathogen and disease dynamics. In: Proceedings of the 13th Annual SCRI Zebra Chip Reporting Session (eds. F. Workneh and C.M. Rush). Pg. 19-22. Frederic Printing, Aurora, CO.

Workneh, F., Henne, D., Goolsby, J., Crosslin, J., Whipple, S., Bradshaw, J., Rashad, A., Paetzold, L., Harveson, R., and Rush, C. 2013. Potato zebra chip epidemiology: What we learned and probable future directions. In: Proceedings of the 13th Annual SCRI Zebra Chip Reporting Session (eds. F. Workneh and C.M. Rush). Pg. 6-9. Frederic Printing, Aurora, CO.

Rush, C. M., Rashed, A., Paetzold L., and Workneh, F. 2012. Impact of late season psyllid infestation on tuber infection, symptom development and seedling emergence. In: F. Workneh, A. Rashed, and C. M. Rush (eds.), Proceedings of the 12th Annual Zebra Chip Reporting Session. Oct. 30 – Nov. 2, 2012. San Antonio, TX USA.

Rush, C. M., Rashed, A., Paetzold L., and Workneh, F. 2012. Impact of late season psyllid infestation on tuber infection, symptom development and seedling emergence. In: F. Workneh, A. Rashed, and C. M. Rush (eds.), Proceedings of the 12th Annual Zebra Chip Reporting Session. Oct. 30 – Nov. 2, 2012. San Antonio, TX USA.

Workneh, F., Goolsby, J., Henne, D., Crosslin, J., Whipple, S., Bradshaw, J., Rashed, A., Paetzold, L., Harveson, R., and Rush, C. M. 2012. Assessing the associations of management/environmental factors with regional psyllid abundance and zebra chip intensity. In: F. Workneh, A. Rashed, and C. M. Rush (eds.), Proceedings of the 12th Annual Zebra Chip Reporting Session. Oct. 30 – Nov. 2, 2012. San Antonio, TX USA.

Rashed, A., C. Wallis, F. Workneh, L. Paetzold, and C.M. Rush. 2011. Fluctuations in ‘Candidatus Liberibacter Solanacearum’ Populations and Symptoms Severity within Potato Plants Throughout the Field Season. 2011 Zebra Chip Annual Reporting Session. San Antonio, TX, USA.

Workneh, F., J.Goolsby, D. Henne, L. Paetzold, A. Rashed, P.B. Hamm, S.I. Rondon, and C.M. Rush. 2011. Exploratory assessments of weather variables in Relation to ZC/Psyllid Prevalence. 2011 Zebra Chip Annual Reporting Session. San Antonio, TX, USA.

Workneh, F., J.Goolsby, D. Henne, L. Paetzold, A. Rashed, P.B. Hamm, S.I. Rondon, and C.M. Rush. 2011. Exploratory assessments of weather variables in Relation to ZC/Psyllid Prevalence. 2011 Zebra Chip Annual Reporting Session. San Antonio, TX, USA.

Henne, D.C., L. Paetzold, F. Workneh, and C. M. Rush. 2010. Evaluation of potato psyllid cold tolerance, overwintering survival, sticky trap sampling, and effects of Liberibacter on potato psyllid alternate host plants. Zebra Chip Annual Reporting Session Proceedings. Nov. 7 – 10, 2010. Dallas, TX USA.

Rush C., D. Henne, F. Workneh, and L. Paetzold. 2010. Investigating titer variation of “Candidatus Liberibacter solanacearum” in individual potato psyllids. Zebra Chip Annual Reporting Session Proceedings. Nov. 7 – 10, 2010. Dallas, TX USA.

Workneh, F., D. Henne, L. Paetzold, J. Goolsby, R. Harveson, J. Bradshaw, and C. M. Rush. 2010. Status of regional zebra chip incidence in 2010 and evaluation of temperature effect under controlled conditions. 2010. Zebra Chip Annual Reporting Session Proceedings. Nov. 7 – 10, 2010. Dallas, TX USA.

Abstracts

Workneh, F., Paetzold, L., Rashed, A., and Rush, C. M. 2015. Population dynamics of released potato psyllids and their bacteriliferous status in relation to disease incidence in caged field plots. Pasadena, CA. Aug. 1-5, 2015.

Paetzold, L., Rashed, A., Workneh, F., and Rush, C.M. 2014. Regional Temporal Variations in Potato Psyllid Haplotypes in Natural Vegetation. APS Meeting, Minneapolis, MN. August, 2014.

Workneh, F., Henne, D. C., Goolsby, J. A., Crosslin, J. M., Whipple, S. D., Bradshaw, J. D., Rashed, A., Paetzold, L., Harveson, R. M., and Rush, C. M. 2013. Exploratory assessments of weather and location factors influencing potato zebra chip occurrence.  Midwest Climate Working Group.  Austin, TX, USA. August 9, 2013.

Workneh, F., Henne, D.C., Goolsby, J.A., Crosslin, J.M., Whipple, S.D., Bradshaw, J.D., Rashed, A., Paetzold, L., Harveson, R.M., and Rush, C.M. 2013. Assessments of potential management and environmental factors affecting regional occurrence of potato zebra chip disease. (Abstr.) Phytopathology 103(Suppl. 2):S2.162. http://dx.doi.org/10.1094/PHYTO-103-6-S2.1

Rush, C. M., Rashed, A., Paetzold, L. and Workneh, F. Overview of Zebra Chip of Potato in the USA and Impact on Tuber Quality. Caribbean Division/Pacific Division Joint APS Meeting. Tucson, AZ USA. June 17-19, 2013.

Rashed, A., L. Paetzold, F. Workneh, and C. M. Rush. 2012. Pathogen-plant-vector interactions in the newly emerging Zebra Chip disease of potatoes. Entomological Society of America. November 11-14, 2012. Knoxville, TN, USA.

Rush, C. M., F. Workneh, A. Rashed, and L. Paetzold. 2012. Overview of Zebra Chip in the US: Focus on Disease Epidemiology. American Phytopathological Society Caribbean Division Meeting.  April 16-18, 2012, South Padre Island, TX, USA.

Workneh, F., D. Henne. L. Paetzold, and C.M. Rush. 2011. Effect of temperature on potato psyllid reproduction and Liberibacter titer levels in tubers. Phytopathology 101: S194.

Presentation

Paetzold, L., Rashed, A., Workneh, F., and Rush, C.M. 2014. Temporal and spatial variation of psyllid haplotype occurring in indigenous vegetation of Texas. 14th Annual SCRI ZC Reporting Session. Portland, OR. Nov. 9, 2014.