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2021 Eva J. Pell Interdisciplinary Lecture on Plant Health at Penn State
Investigating plant immune perception and pathogen virulence in bacterial vector-borne disease

Climate change is predicted to increase the prevalence of vector borne disease due to expansion of insect populations. Despite the importance of bacterial vector-borne pathogens, our understanding of how they manipulate their hosts is in its infancy compared to free-living pathogenic organisms. Candidatus Liberibacter species are unculturable, slow growing, phloem-limited pathogens associated with multiple economically important diseases in citrus and Solanaceous crops. We studied Liberibacter effectors to gain insight into disease development in both tomato and citrus. SEC secreted effectors were identified from four different haplotypes. Liberibacter effector subcellular localization, cell-to-cell movement and expression patterns were determined. Our results demonstrate that Lso differentially deploys suites effectors capable of targeting diverse eukaryotic subcellular compartments to modify its insect vector and plant hosts. Data will be reported on effector plant targets as well as our progress on utilizing a mechanistic understanding of plant immunity to target vector-borne disease.

Dec 6, 2021 03:35 PM in Eastern Time (US and Canada)

Eva J. Pell Interdisciplinary Lecture on Plant Health
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