Cucurbit aphid-borne yellows virus

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symptoms of Cucurbit aphid-borne yellows virus on naturally infected melon plants in Korea - A) chlorosis, B) leaf mosaic (click on image to enlarge it)
Author(s): Hae-Ryun Kwak et al.
Source: The Plant Pathology Journal (2018) vol. 36, p. 536

Cucurbit aphid-borne yellows virus (CABYV)

The virus is widely distributed in Europe, Asia and Africa and infects various cucurbits. The symptoms include interveinal mottling and chlorosis on younger leaves as well as yellowing and thickening of the older leaves. Yield losses can reach 50%. The virus is limited to the phloem tissue.

The virus is transmitted by aphids like Aphis gossypii and Myzus persicae in a circulative and non-propagative manner. The behaviour of the aphid vector can be altered in such a way that non-viruliferous aphids spent longer time feeding on CABYV-infected plants compared to non-infected plants, and viruliferous aphids show a preference for non-infected over CABYV-infected plants (e.g. Carmo-Sousa et al., 2016).

Vernacular names
• Deutsch: Blattlaus-übertragbare Cucurbitaceen-Vergilbungsvirus
• English: Cucurbit aphid-borne yellows virus
• Français: jaunisse des cucurbitacées transmise par puceron