Origin and evolution of the kiwifruit canker pandemic

McCann, Honour C.; Li, Li; Liu, Yifei; Li, Dawei; Pan, Hui; Zhong, Caihong; Rikkerink, Erik H.A.; Templeton, Matthew D.; Straub, Christina; Colombi, Elena; Rainey, Paul B.; Huang, Hongwen

doi:10.1093/gbe/evx055

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Journal Article

Origin and evolution of the kiwifruit canker pandemic

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Rainey, Paul B.
Department Microbial Population Biology, Max Planck Institute for Evolutionary Biology, Max Planck Society;

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http://www.sherpa.ac.uk/romeo/issn/1759-6653/
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Citation

McCann, H. C., Li, L., Liu, Y., Li, D., Pan, H., Zhong, C., et al. (2017). Origin and evolution of the kiwifruit canker pandemic. Genome Biology and Evolution, 9(4), 932-944. doi:10.1093/gbe/evx055.

Cite as: https://hdl.handle.net/11858/00-001M-0000-002E-2C41-2

Abstract

Recurring epidemics of kiwifruit (Actinidia spp.) bleeding canker disease are caused by Pseudomonas syringae pv. actinidiae (Psa). In order to strengthen understanding of population structure, phylogeography, and evolutionary dynamics, we isolated Pseudomonas from cultivated and wild kiwifruit across six provinces in China. Based on the analysis of 80 sequenced Psa genomes, we show that China is the origin of the pandemic lineage but that strain diversity in China is confined to just a single clade. In contrast, Korea and Japan harbor strains from multiple clades. Distinct independent transmission events marked introduction of the pandemic lineage into New Zealand, Chile, Europe, Korea, and Japan. Despite high similarity within the core genome and minimal impact of within-clade recombination, we observed extensive variation even within the single clade from which the global pandemic arose.