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Plant disease triangle. Epidemiology is the study of factors affecting the outbreak and spread of infectious diseases. [11] A disease triangle describes the basic factors required for plant diseases. These are the host plant, the pathogen, and the environment. Any one of these can be modified to control a disease. [12]
Different viruses can infect all the organs and tissues of the body and the outcomes range from mild or no symptoms, to life-threatening diseases. [5] Humans cannot be infected by plant or insect viruses, but they are susceptible to infections with viruses from other vertebrates. These are called viral zoonoses or zoonotic infections. [6]
Although plant viruses are not as well understood as their animal counterparts, one plant virus has become very recognizable: tobacco mosaic virus (TMV), the first virus to be discovered. This and other viruses cause an estimated US$60 billion loss in crop yields worldwide each year. Plant viruses are grouped into 73 genera and 49 families ...
[13]: 802 Plant viruses cannot infect humans and other animals because they can reproduce only in living plant cells. [13]: 799–807 Originally from Peru, the potato has become a staple crop worldwide. [180] The potato virus Y causes disease in potatoes and related species including tomatoes and peppers. In the 1980s, this virus acquired ...
WASHINGTON (Reuters) - Some of the deadliest diseases to stalk humankind have come from pathogens that jumped from animals to people. The virus that causes AIDS, for example, crossed over from ...
Plant diseases are diseases in plants caused by pathogens (infectious organisms) and environmental conditions (physiological factors). [1] Organisms that cause infectious disease include fungi , oomycetes , bacteria , viruses , viroids , virus -like organisms, phytoplasmas , protozoa , nematodes and parasitic plants . [ 2 ]
Viral infections can cause disease in humans, animals and plants. In healthy humans and animals, infections are usually eliminated by the immune system , which can provide lifetime immunity to the host for that virus.
A list of articles about infectious diseases caused by viruses. ... Antiviral drugs (5 C, 134 P) A. Animal viral diseases (18 C ... Viral plant pathogens and diseases ...