Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Viral Diversity in Mixed Tree Fruit Production Systems Determined through Bee-Mediated Pollen Collection

Version 1 : Received: 30 May 2024 / Approved: 31 May 2024 / Online: 31 May 2024 (13:46:57 CEST)

How to cite: Vansia, R.; Smadi, M.; Phelan, J.; Wang, A.; Bilodeau, G. J.; Pernal, S. F.; Guarna, M. M.; Rott, M.; Griffiths, J. S. Viral Diversity in Mixed Tree Fruit Production Systems Determined through Bee-Mediated Pollen Collection. Preprints 2024, 2024052139. https://doi.org/10.20944/preprints202405.2139.v1 Vansia, R.; Smadi, M.; Phelan, J.; Wang, A.; Bilodeau, G. J.; Pernal, S. F.; Guarna, M. M.; Rott, M.; Griffiths, J. S. Viral Diversity in Mixed Tree Fruit Production Systems Determined through Bee-Mediated Pollen Collection. Preprints 2024, 2024052139. https://doi.org/10.20944/preprints202405.2139.v1

Abstract

Commercially cultivated Prunus species are commonly grown in adjacent or mixed orchards, and can be infected with unique or commonly shared viruses. Apple (Malus domestica), another member of the Rosacea and distantly related to Prunus, can share the same growing regions and common pathogens. Pollen can be a major route for virus transmission, and analysis of the pollen virome in tree fruit orchards can provide insights into these virus pathogen complexes from mixed production sites. Commercial honey bee (Apis mellifera) pollination is essential for improved fruit set and yield in tree fruit production systems. Here we describe the metagenomics-based detection of plant viruses through bee and pollen samples collected during the spring bloom period from a mixed Prunus and Malus orchard. Twenty-one unique viruses were detected in samples collected during apricot (Prunus armeniaca), sweet cherry (Prunus avium), peach (Prunus persica), and apple blooms. Ilarviruses prune dwarf virus (PDV) and prunus necrotic ringspot virus (PNRSV), Secoviridae family members tomato necrotic ringspot virus, tobacco necrotic ringspot virus, and prunus virus F, and Capillovirus cherry virus A (CVA) were detected in all time points, while other viruses were detected with restricted ranges. These results demonstrate the benefits of area-wide monitoring through bee pollination activities, and provide new insights into the diversity of viruses in tree fruit pollination ecosystems.

Keywords

metagenomics; virus; pollen; pollen transmission; Prunus; Honey bee; Apricot; Cherry; Peach; Apple; Virus diversity; Virus spillover

Subject

Biology and Life Sciences, Virology

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