J. R. Úrbez‐Torres

Presence and abundance of airborne Botryosphaeriaceae conidia are governed by temperature and season in the Okanagan Valley, Canada

Isidora Silva‐Valderrama, Jane Theilmann, Melanie Walker, J. Boulé et autres

BACKGROUND: Grapevine trunk diseases (GTDs) are one of the most important diseases in grapevines, threatening vineyard longevity and productivity worldwide. However, regional patterns of airborne inoculum remain poorly understood for many production areas, including the Okanagan Valley in British Columbia, Canada. Here, …

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Towards the reliable use of aerial eDNA for ecosystem monitoring

Nadia Sokal, J. R. Úrbez‐Torres, Letitia Da Ros

Abstract Evidence supporting the use of airborne eDNA for biodiversity studies and ecosystem monitoring is growing. The promise of wide-area population dynamics data for downstream applications in targeted monitoring of pests and pathogens for agriculture and rare species for conservation is appealing; …

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Investigating the interaction between ring nematode infestation and Petri disease development in young Merlot grapevines infected with Phaeomoniella chlamydospora

Jared Hrycan, Thomas A. Forge, Pat Bowen, Miranda Hart et autres

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Co‐phylogenetic constraints on host breadth within an emerging fungal pathogen complex of global concern

Isidora Silva‐Valderrama, J. R. Úrbez‐Torres, T. Jonathan Davies

Abstract Emerging fungal infectious diseases constitute the largest pathogen threat to plants. However, the factors influencing fungal‐plant interactions, host shifts, and the emergence of pathogens on a novel host are still not well understood. Evolutionary relationships among hosts appear to be important, …

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First Report of ‘Candidatus Phytoplasma pruni’ Associated with X-Disease on Sweet Cherry (Prunus avium) in Canada

J. R. Úrbez‐Torres, Siva Sabaratnam, Susanna Acheampong, D. Balcaen et autres

British Columbia (BC) is the lead producer of sweet cherries in Canada with more than 2,000 ha in production and a farm gate value of over CAD$100 million annually. Since 2010, an outbreak of little cherry disease caused by Little cherry virus …

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Health Status of Ready-to-Plant Grapevine Nursery Material in Canada Regarding Crown Gall and Description of the First Allorhizobium vitis Strain OP-G1 Isolated from British Columbia

Tanja M. Voegel, Portiaa McGonigal, Louise M. Nelson, J. R. Úrbez‐Torres

Crown gall disease of grapevines caused by Allorhizobium vitis causes significant damage to vineyards in cold-climate viticulture areas such as Canada and the northern United States. Introduction of the disease into vineyards occurs mainly through planting of infected but asymptomatic nursery material. …

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Microbial communities of sweet cherry ( Prunus avium L.) and assessment of their association with cherry slip-skin-maceration disorder

Daniel T. O’Gorman, P. Haag, J. Boulé, Glen Healy et autres

A relatively new condition of sweet cherry (Prunus avium L.), cherry slip-skin-maceration disorder (cherry-SSMD), presumably associated with yeast species, required a detailed study looking at the microbial communities inhabiting the fruit and blossoms of commercial cherry trees. Cherry-SSMD affects the fruit quality …

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Genera of phytopathogenic fungi: GOPHY 4

Qian Chen, Mounes Bakhshi, Y. Balcì, Kirk Broders et autres

This paper is the fourth contribution in the Genera of Phytopathogenic Fungi (GOPHY) series. The series provides morphological descriptions and information about the pathology, distribution, hosts and disease symptoms, as well as DNA barcodes for the taxa covered. Moreover, 12 whole-genome sequences …

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Grapevine trunk disease fungi: their roles as latent pathogens and stress factors that favour disease development and symptom expression

J. R. Úrbez‐Torres, Jared Hrycan, Miranda Hart, Patricia Bowen et autres

Grapevine trunk diseases (GTDs) are major biotic factors reducing yields and limiting vineyard economic life spans. Fungi in the GTD complex cause a range of symptoms in host plants, although these pathogens are slow wood colonizers and potentially latent pathogens. Understanding has …

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Novel microsatellite markers reveal multiple origins of Botryosphaeria dothidea causing the Chinese grapevine trunk disease

Ishara S. Manawasinghe, Wei Zhang, Xinghong Li, Wensheng Zhao et autres

Botryosphaeria dothidea causes diseases in many different hosts worldwide. This species has become the most prominent fungal taxon causing grapevine trunk disease in China, with a recent disease outbreak. To reveal the genetic diversity and explore the origin of B. dothidea , …

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Relationship Between Drosophila suzukii and Postharvest Disorders of Sweet Cherry (Prunus avium)

Murali‐Mohan Ayyanath, Cheryl L. Zurowski, Ian M. Scott, D. Thomas Lowery et autres

Spotted wing drosophila, Drosophila suzukii, utilizes intact ripe fruits for oviposition and larval development. Sweet cherry (Prunus avium) and D. suzukii share a saprophytic microbial community, or microbiome, that colonizes the interior and exterior of the fruit, which benefits the nutrition and …

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Epidemiology and Genetic Diversity of Grapevine Leafroll-Associated Viruses in British Columbia

Sudarsana Poojari, J. Boulé, Naomi C. DeLury, D. Thomas Lowery et autres

Grapevine leafroll disease (GLD) is a complex associated with one or more virus species belonging to the family Closteroviridae. The majority of viruses in this complex are vectored by one or more species of mealybugs (Pseudococcidae) and/or scale insects (Coccidae). Grape-growing regions …

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