There are over 35 known virus and virus-like diseases of sweet cherry (Prunus avium), some with potential to cause severe economic impact by reducing vegetative growth, vigor, or fruit quality. Oregon is the second-ranked state for sweet cherry production in the United States.
Statewide surveys were conducted in Oregon sweet cherry orchards for virus and virus-like diversity and distribution. Orchards in key production regions with suspected virus disease symptoms were sampled.
Virus-specific enzyme-linked immunosorbent assay, isothermal amplification, or quantitative real-time PCR were used to test for the presence of common or economically important sweet cherry pathogens, including cherry leaf roll virus (CLRV), little cherry virus 2 (LChV2), prune dwarf virus (PDV), prunus necrotic ringspot virus (PNRSV), tomato ringspot virus (ToRSV), and ‘Candidatus Phytoplasma pruni’.
CLRV, a new virus of sweet cherry in Oregon, was found associated with enation and dieback symptoms in The Dalles. Some viruses were found in new regions, which included Hood River (PDV, PNRSV, and ToRSV) and the Umpqua Valley (PDV and PNRSV).
A subsequent survey was conducted in the Mid-Columbia production region for the presence of little cherry symptoms associated with little cherry and X-Diseases. All symptomatic samples from The Dalles and Mosier, OR, or Dallesport, WA, tested positive for ‘Ca. P. pruni’ but not LChV2. These findings provide a foundation for the current understanding and management of virus and virus-like diseases of sweet cherry in Oregon and context for further studies into these pathogens and their vectors.
Source: Diagnostic and Historical Surveys of Sweet Cherry (Prunus avium) Virus and Virus-Like Diseases in Oregon, Plant Disease 2023 107:3, 633-643, https://doi.org/10.1094/PDIS-02-21-0327-SR.
Image: OSU
Lauri A. Reinhold and Jay W. Pscheidt
Department of Botany and Plant Pathology, Oregon State University
14 Jun 2024
Frutas de Chile and the Servicio Agrícola y Ganadero (SAG) are already working to mitigate the impact of this quarantine. Representatives of the two organisations are in China to propose alternatives that could make it less burdensome for Chilean producers.
15 Feb 2024
The American Diabetes Association lists cherries as an encouraged food when following a low glycaemic index diet as a low glycaemic index diet can help people control their blood sugar levels.
21 Nov 2024
A Chinese study analyzed the effects of five different rootstocks on Summit sweet cherry cultivar during the fruit veraison phase with or without nitrogen-free nutrient fertilizers. The five rootstocks tested were: Mahaleb, Gisela 5, and three hybrid selections H11, H17, and H22.
21 Nov 2024
Given its direct influence on other indices such as flavor and firmness, this time we will analyze color, from the perspective of homogenization in the final product, the high percentage of light-colored fruit, and the high percentage of dark-colored fruit.
