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Turnip yellow mosaic virus crystals grown on Earth (left) and in outer space under microgravity conditions (right). [1] Turnip yellow mosaic virus (TYMV) is an isometric Tymovirus of the family Tymoviridae. Its host range is confined almost entirely to plants in the genus Brassica in western Europe, which includes cabbages, cauliflower and ...
Brome mosaic virus (BMV) is a small (28 nm, 86S), positive-stranded, icosahedral RNA plant virus belonging to the genus Bromovirus, family Bromoviridae, in the Alphavirus-like superfamily. BMV was first isolated in 1942 from bromegrass ( Bromus inermis ), [ 2 ] had its genomic organization determined by the 1970s, and was completely sequenced ...
Chilling injury to fruit One of the less common plantain diseases is exostentialis clittellus referred to by most plantain and banana farmers as "segmented banana". This is a result of the peel forming tiny inter-fruit membranes which cause the banana to appear as though it has been sliced before it is peeled.
Life cycle of the black rot pathogen, the gram negative bacterium Xanthomonas campestris pathovar campestris. Plant pathology or phytopathology is the scientific study of plant diseases caused by pathogens (infectious organisms) and environmental conditions (physiological factors). [1]
There is tenuous evidence that a virus common to peppers, the Pepper Mild Mottle Virus (PMMoV) may have moved on to infect humans. [9] This is a rare and unlikely event as, to enter a cell and replicate, a virus must "bind to a receptor on its surface, and a plant virus would be highly unlikely to recognize a receptor on a human cell.
Influenza B virus is almost exclusively a human pathogen, and is less common than influenza A. The only other animal known to be susceptible to influenza B infection is the seal . [ 47 ] This type of influenza mutates at a rate 2–3 times lower than type A [ 48 ] and consequently is less genetically diverse, with only one influenza B serotype ...
Digitaria sanguinalis is a species of grass known by several common names, including hairy crabgrass, [2] hairy finger-grass, [3] large crabgrass, crab finger grass, purple crabgrass. [4] It is one of the better-known species of the genus Digitaria , and one that is known nearly worldwide as a common weed.
Of the virus isolates, enterovirus 71 (EV71) was diagnosed in 44.4% of the patients (132 of 297) in 1998, 2% (13 of 646) in 1999, and 20.5% (195 of 949) in 2000. Genetic analyses of the 5′-untranslated and VP1 regions of EV71 isolates by reverse transcription-PCR and sequencing were performed to understand the diversity of EV71 in these ...