TMV (Tobacco mosaic virus)

Host organism: Nicotiana tabacum
Pathogen : TMV
Classification –
Kingdom: Orthornavirae
Phylum: Kitrinoviricota
Class: Alsuviricetes
Order: Martellivirales
Family: Virgaviridae
Genus: Tobamovirus
Species: Tobacco mosaic virus
Characters:
-It is a viral disease
-The infected leaves instead of being uniformly green becomes spotted (chlorosis)
-Light yellow or creamy spots appear on the leaf surface giving the mosaic appearance
-The spots gradually increase in size and ultimately results necrosis (death of tissue)
-This disease is transmitted to healthy plants by contact
-It’s cell sap is highly infectious
Reference : practical botany[semester-1] by Satish Kumar