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Examples include Polymyxa graminis, which has been shown to transmit plant viral diseases in cereal crops [8] and Polymyxa betae which transmits Beet necrotic yellow vein virus. Plasmodiophorids also create wounds in the plant's root through which other viruses can enter.
Pages in category "Viral plant pathogens and diseases" The following 200 pages are in this category, out of approximately 368 total. This list may not reflect recent changes .
Plant pathogens, organisms that cause infectious plant diseases, include fungi, oomycetes, bacteria, viruses, viroids, virus-like organisms, phytoplasmas, protozoa, nematodes and parasitic plants. [2] In most plant pathosystems, virulence depends on hydrolases and enzymes that degrade the cell wall.
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 ]
When control of plant virus infections is considered economical, for perennial fruits, for example, efforts are concentrated on killing the vectors and removing alternate hosts such as weeds. [13]: 802 Plant viruses cannot infect humans and other animals because they can reproduce only in living plant cells. [13]: 799–807
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.
A number of “vampire viruses” have been discovered in soil samples in Maryland and Missouri for the first time.. The existence of the eerily-nicknamed viruses has been known to researchers for ...
However, there are many cases where mycoviruses are grouped together with plant viruses. For example, CHV1 showed phylogenetic relatedness to the ssRNA genus Potyvirus, [25] and some ssRNA viruses, which were assumed to confer hypovirulence or debilitation, were often found to be more closely related to plant viruses than to other mycoviruses. [1]