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Since viruses are obligate intracellular parasites they must develop direct methods of transmission, between hosts, in order to survive. The mobility of animals increases the mechanisms of viral transmission that have evolved, whereas plants remain immobile, and thus plant viruses must rely on environmental factors to be transmitted between hosts.
Plant virus transmission strategies in insect vectors. Plant viruses need to be transmitted by a vector, most often insects such as leafhoppers. One class of viruses, the Rhabdoviridae, has been proposed to actually be insect viruses that have evolved to replicate in plants. The chosen insect vector of a plant virus will often be the ...
Geminiviridae is a family of plant viruses that encode their genetic information on a circular genome of single-stranded (ss) DNA. There are 520 species in this family, assigned to 14 genera. There are 520 species in this family, assigned to 14 genera.
Brome mosaic virus (BMV) is a small (28 nm, 86S), positive-stranded, icosahedral RNA plant virus belonging to the genus Bromovirus, family Bromoviridae, in the Alphavirus-like superfamily. BMV was first isolated in 1942 from bromegrass ( Bromus inermis ), [ 2 ] had its genomic organization determined by the 1970s, and was completely sequenced ...
Transmission electron micrograph of tomato spotted wilt virus. The circulative propagative transmission of TSWV is carried out by at least ten different species of thrips. [2] The most common species is Frankliniella occidentalis (western flower thrips) as it is the vector that predominantly transmits TSWV globally and in greenhouses.
Due to the presence of a cell wall, virus entry into plant cells is limited to mechanical transmission or transmission by a vector that can pierce or damage a plant and create a site of entry for the virus. SPFMV is transmitted non-persistently on the stylet tips of aphids as they bite the sweet potato plant.
Aphid species Myzus persicae. The cauliflower mosaic virus (CaMV) is a member of the family Caulimoviridae.This family is grouped together with the Belpaoviridae, Metaviridae, Pseudoviridae, and Retroviridae (all of which instead have an RNA genome replicated via a DNA intermediate) in the order Ortervirales; the Hepadnaviridae, despite having a DNA genome replicated via an RNA intermediate ...
The INSV virus infects by injecting the RNA the virus contains into the cell which then starts using the cell resources to transcribe what the virus RNA states. [3] Viral infection can often result in the death of the plant. The disease is mainly controlled by the elimination of the western flower thrip vector and by destroying any infected ...