Papaya leaf curl virus
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Authors: Sumit K. Soni et al.
Source: Plants (2022), 11 (5), 579
Papaya leaf curl virus (PaLCuV)
This virus is found in various countries of southern Asia, from Pakistan and India in the west to Korea in the east. It infects mainly papaya, but has been also reported from other crops, ranging from vegetables and cotton to ornamentals.
On papaya, the virus often causes a severe disease. Symptoms include wrinkled, chlorotic, deformed and curled leaves that roll downwards. The leaf may be transformed into an inverted, leathery cup, reduced in size with thickened veins and twisted petioles (see bottom part of image at right). In the advanced stage of infection, infected plants defoliate and produce small and distorted fruits that often fall off prematurely.
The virus is transmitted by the whitefly (Bemisia tabaci) and management typically consists of controlling the vector. Apart from the typical form, two other related viruses have been described from eastern Asia, Papaya leaf curl China virus and Papaya leaf curl Guangdong virus.
