Through seed : Seed can be infected with virus either due to external contamination of the seed with virus particles, or due to infection of the living tissues of the embryo. Transmission by this route leads to early outbreaks of disease in new crops which are usually initially focal in distribution, but may subsequently be transmitted to the remainder of the crop by other mechanisms.

Vegetative propagation/grafting: These techniques are cheap and easy methods to allow more growth but provide the ideal opportunity for viruses to spread to new plants.

Vectors: Many different groups of living organisms can act as vectors and spread viruses from one plant to another: i.e. are inscects like beetle,grasshopper. When this inscects sucks or bite the plant tissues, viruses is transmitted. In some cases, the virus may also infect and multiply in the tissues of the insect, and so these inscects not only serves as a vectors but also of amplifying the infection.

Mechanical: Plant viruses rely on a mechanical breach of the integrity of a cell wall to directly introduce a virus particle into a cell. Thus, when an inscect bite or sucks it makes the plant vulnerable for infectious. Sometimes, virus from the soil or the air can infect the plant.

Spraying of pesticide or insecticide will damage the plant cell wall thus it make plants vulnerable to infectious. Most of the time this form of action will cause the whole crop population to be infected. Farmers will be the only suffering the lose of crops but it can cause food shortage in this century of times as many farmers are using pesticide or insecticide and with the climate changing virus can spread rapidly from one crops to the next killing them. Crops are important to human for food so thus plants in the wild, they also give off oxygen which is the breath of every living creature on this earth. If we would to eat this virus infected plants this virus may start mutating to start infecting humans too. Everything that seems impossible will be possible with nature so we should not only should learn our nature but should start repairing this very damage earth if not we will become extinct.

Done by me, Jiani