Tree An area of woodland composed primarily of trees established by planting or artificial seeding is known as a plantation. Trees are the source of many of the world's best known fleshy fruits. Apples, pears, plums, cherries and citrus are all grown commercially in temperate climates and a wide range of edible fruits are found in the tropics. Other commercially important fruit include dates, figs and olives. Palm oil is obtained from the fruits of the oil palm ("Elaeis guineensis"). The fruits of the cocoa tree ("Theobroma cacao") are used to make cocoa and chocolate and the berries of coffee trees,
Cacao necrosis virus translucent veinal necrosis of leaves, necrotic or chlorotic spots of leaves, defoliation, and dieback of shoots that rarely leads to seedling death if infected by the Ghanaian isolate. A following recovery phase of live plants shows limited leaf symptoms. The virus has been transmitted to numerous diagnostically susceptible host species including "Beta vulgaris", "Chenopodium amaranticolor", "Chenopodium quinoa", "Cucumis sativus", "Glycine max", "Gomphrena globosa", "Nicotiana clevelandii", "Nicotiana glutinosa", "Nicotiana tabacum", "Petunia × hybrida", "Phaseolus vulgaris", "Tetragonia tetragonioides", "Theobroma cacao", and "Vigna unguiculata", but these plants are not infected in nature. The strain used to infect these species was the Ghanian isolate.