13th Annual Patton Lecture

Professor Bryony Bonning, Iowa State University, the 2014 Patton Lecturer

The 13th Annual Patton Lecture was given by Professor Bryony Bonning, Iowa State University on 3rd December 2014 . The title of Professor Bonning’s presentation was: Plant Virus-Aphid Vector Molecular Interactions and Associated Technologies.

Bryoning Bonning, Patton Lecturer, (right) and Angela Douglas

Professor Bonning’s presentation was founded on the fact that aphids transmit more than 275 plant viruses, resulting in considerable economic loss within the agricultural sector. Viruses in the Luteoviridae are obligately transmitted by aphids in a persistent manner that requires virion accumulation in the aphid hemocoel. To enter the hemocoel, the virion must bind and traverse the aphid gut epithelium. The molecular mechanisms involved in this process are poorly understood. By screening a phage display library, we identified a peptide that binds to the gut epithelium of the pea aphid Acyrthosiphon pisum and impedes the uptake of Pea enation mosaic virus (PEMV) from the pea aphid gut into the hemocoel. The talk describes the identification of the gut receptor for PEMV and the development of two novel aphid management technologies based on knowledge of pea aphid – PEMV molecular interactions. These technologies provide enhanced delivery of both gut active and neurotoxic peptides.

Georg Jander and Bryony Bonning in discussion at lunch

A one-day symposium Hemiptera Day was held in Professor Bonning’s honor, and to showcase the research on Hemiptera at Cornell University.

Georg Jander (Boyce Thompson Institute) Evidence for cytokinin involvement in plant-aphid interactions

Junbo Luan responds to questions after his presentation

unbo Luan (Entomology) The molecular basis of nutrient exchange in the whitefly symbiosis with two intracellular bacteria.

Vered Tzin (Boyce Thompson Institute) Characterization of the biological processes occurring in maize leaves during short and long-term aphid feeding

Tobias Zuest’s talk

Tobias Zuest (Ecology & Evolutionary Biology) Plants driving insect community dynamics: the aphid-milkweed system Anna Wallingford (Entomology) Hemipteran pests in horticultural crops

Jason Smith (Penn State) The hazards of eating a parasite: Aphid feeding on the parasitic plant dodder (Cuscuta gronovii) is inhibited by toxins that originate in dodder’s host (Arabidopsis

John Ramsey (Boyce Thompson Institute) Analysis of circulative transmission of Candidatus Liberibacter asiaticus in the Asian Citrus Psyllid using Protein Interaction Reporter technology

Lunch-time discussions

Michelle Cilia gives her presentation

Katie Marchetto (Ecology and Evolutionary Biology) Are stolen goods best? Evolving interactions between coinfecting, aphid-vectored viruses

Yi Xu (Plant Pathology) Population Diversity of rice stripe virus-derived siRNAs and RNAi-Based antiviral immunity in the planthopper Laodelphax striatellus

Michelle Cilia (USDA ARS) A role for cathepsin in aphid transmission of circulative viruses


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