New host crops of cucurbit chlorotic yellows virus
Cucurbit chlorotic yellows virus (Crinivirus, CCYV) is an emerging virus of cucurbits transmitted by Bemisia tabaci (Hemiptera: Aleyrodidae – EPPO A2 List) (EPPO RS 2022/043). It was previously only known to cause damage to cucurbit plants. However, recently, it was reported from crops in other families.
CCYV is first reported infecting and damaging lettuce (Lactuca sativa) in India. Infected plants were first observed in 2021 and showed blistering, chlorosis, mosaic, rosetting/ excess proliferation, and stunting symptoms.
CCYV is first reported in high cannabidiol-containing cannabis plants (Cannabis sativa) grown in farms in Israel. Infected plants showed foliar symptoms of interveinal chlorosis and yellowing, brittleness and occasionally necrosis, more apparent in older leaves. Severe disease symptoms of yellowing and leaf-edge necrosis were observed in the case of mixed infections with lettuce chlorosis virus (Crinivirus, LCV – formerly EPPO Alert List) and CCYV.
Sources
Gezovitch O, Luria N, Lachman O, Sela N, Smith E, Dombrovsky A (2024) Cucurbit chlorotic yellows virus, a crinivirus infecting Cannabis sativa plants. Plant Pathology 73(1), 47-56.
Kumar A, Choudhary S, Lyngdoh YA, Baranwal VK, Jain RK, Basavaraj YB (2023) Evidence for the natural infection of cucurbit chlorotic yellows virus (CCYV) in lettuce plants from India. VirusDisease 34, 554–557.