Citrus gummy bark viroid
Encyclopedia
The citrus gummy bark viroid (abbreviated CGBVd) is a sub-species of the hop stunt viroid
Hop stunt viroid
The hop stunt viroid is a viroid species that infects the common hop plant, citrus plants and grapevines, among others. It is a member of the Pospiviroidae family and the Hostuviroid genus....

, and thus is a member of the genus Hostuviroid
Hostuviroid
Hostuviroid is a genus of viroids that includes the hop stunt viroids, a group of viroids that infects many different types of plants, including the common hop plant.Some hostuviroids:Citrus gummy bark viroidGrapevine viroid...

.
As the name suggests, the citrus gummy bark viroid causes problems in the bark of the sweet orange tree.
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