Information about viral diseases caused by plants
Answers
Answer:
Ringspot(common name)
tomato ringspot virus ((scientific name)
spotted wilt ( common name )
tomato spotted wilt ( scientific name )
1>Barley yellow dwarf
information
the barley yellow dwarf virus effect several grains and staples crops including wheat.
2> bud blight
information
a bud blight virus affects soybeans ,a staple crops.
3>sugarcanes mosaic virus
information
a sugarcanes mosaic virus discolor the leaves of sugarcane plant..
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Explanation:
Plant viruses are viruses that affect plants. Like all other viruses, plant viruses are obligate intracellular parasites that do not have the molecular machinery to replicate without a host. Plant viruses can be pathogenic to higher plants.
Most plant viruses are rod-shaped, with protein discs forming a tube surrounding the viral genome; isometric particles are another common structure. They rarely have an envelope. The great majority have an RNA genome, which is usually small and single stranded (ss), but some viruses have double-stranded (ds) RNA, ssDNA or dsDNA genomes. Although plant viruses are not as well understood as their animal counterparts, one plant virus has become iconic: tobacco mosaic virus (TMV), the first virus to be discovered. This and other viruses cause an estimated U.S$60 billion loss in crop yields worldwide each year. Plant viruses are grouped into 73 genera and 49 families. However, these figures relate only to cultivated plants, which represent only a tiny fraction of the total number of plant species. Viruses in wild plants have been relatively little studied, but the interactions between wild plants and their viruses often do not appear to cause disease in the host plants