First report of Tomato leaf curl New Delhi virus in Morocco.
Viral disease symptoms were observed in zucchini (Cucurbita pepo) crops growing in the Agadir and Taroudant regions of Morocco, in 2017. The incidence of disease was significant, with severe yellow mosaic symptoms accompanied by leaf curling and roughness of the fruit skin. The infected plants had smaller and fewer fruits when compared to healthy ones and, in most cases, fruit bursting was observed. A total of 15 zucchini samples were collected from open fields in the affected regions: 9 samples from Agadir (zone Soud Khmiss); and 6 from Taroudante (zone Boudmass). The causal pathogen was isolated and identified as Tomato Leaf Curl New Delhi virus (ToLCNDV) based on various molecular analyses. This is thought to be the first report of ToLCNDV in Morocco.