Citrus tristeza virus Viruses can be classified in several ways, such as by their geometry, by whether they have envelopes, by the identity of the host organism they can infect, by mode of transmission, or by the type of disease they cause. ... An RNA virus is a virus that either uses RNA as its genetic material, or whose genetic material passes through an RNA intermediate during replication. ...
Citrus tristeza virus (CTV) is a viral species of the Closterovirus genus that causes the most economically damaging disease to its namesake plant genus, Citrus. The disease has lead to the death of millions of Citrus trees all over the world and has rendered other millions useless for production. Farmers in Brazil and other South American countries coined the word "tristeza", ("tristeza" means sadness in Portuguese and Spanish) referring to the devastation produced by the disease in the 1930s. Species & major hybrids Species Citrus aurantifolia - Key lime Citrus maxima - Pomelo Citrus medica - Citron Citrus reticulata - Mandarin & Tangerine Major hybrids Citrus ×sinensis - Sweet Orange Citrus ×aurantium - Bitter Orange Citrus ×paradisi - Grapefruit Citrus ×limon - Lemon Citrus ×latifolia - Persian lime See also main text for other hybrids Citrus is a common term... This article or section does not cite its references or sources. ...
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