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Infection of a susceptible cowpea leaf causes a "mosaic" pattern in the leaf, and results in high virus yields (1-2 g/kg). Its genome consists of 2 molecules of positive-sense RNA (RNA-1 and RNA-2) which are separately encapsidated. Both RNA1 and RNA2 have a VPg (virus genome-linked protein) at the 5'end, and polyadenylation at the 3' end ...
Plant cells do not possess receptors like animal cells that would allow the virus to enter and since plant cells are thick, viruses achieve entry as aforementioned. Once inside the plant, the virus spreads using plasmodesmata, a membrane channel found in plants connecting one plant cell to another. Caulimoviruses are para-retroviruses with a ...
Nipah virus infection is an infection caused by the Nipah virus. Symptoms from infection vary from none to fever , cough, headache, shortness of breath , and confusion. This may worsen into a coma over a day or two, and 50% to 75% of those infected die.
The targets should also be common across many strains of a virus, or even among different species of virus in the same family, so a single drug will have broad effectiveness. For example, a researcher might target a critical enzyme synthesized by the virus, but not by the patient, that is common across strains, and see what can be done to ...
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Tobacco mosaic virus has been known to cause a production loss for flue cured tobacco of up to two percent in North Carolina. [33] It is known to infect members of nine plant families, and at least 125 individual species, including tobacco, tomato , pepper (all members of the Solanaceae ), cucumbers , a number of ornamental flowers , [ 34 ] and ...
Positive-stranded RNA virus transcription is the method of transcription. Translation takes place by −1 ribosomal frameshifting. The virus exits the host cell by tubule-guided viral movement. [4] [5] Plants serve as the natural host. The virus is transmitted via a vector (often an insect or mite). Transmission routes are vector and mechanical ...
The first mimivirus (BV-PW1) was described in 1995, [15] but was not recognized as such until its sequenced genome was released as Cafeteria roenbergensis virus (CroV) in 2010. [16] Subsequently, the Giant Virus Acanthamoeba polyphaga Mimivirus was characterized [17] (which had been mistaken as a bacterium in 1993), [18] and then sequenced. [19]