By David G. A. Walkey (auth.)
For the previous 20 years i've got labored as an utilized plant virologist, trying to determine and keep watch over virus illnesses in box plants. over the last ten years it's been my privilege to offer brief classes in plant virology to final-year scholars learning plant pathology, micro biology and common botany. through the interval i've been lecturing, it's been attainable to suggest numerous very good 'library' books for additional interpreting in plant virology, yet there was no e-book protecting utilized plant virology scholar may give some thought to procuring. With instructing requisites in brain this e-book has been written to supply a concise advent to utilized plant virology in accordance with the studies i've got won engaged on virus illnesses, either in an utilized laboratory and within the box. The textual content concentrates on introducing the reader to features of plant virology that may be encountered each day by means of an utilized virologist attempting to determine viruses and improve regulate measures for virus illnesses of crop vegetation. even though a quick advent to virus constitution and its terminology is given within the commencing bankruptcy of the ebook, no test is made to hide intimately the extra primary features of virus constitution, biochemistry and replication. equally, the indications attributable to person viruses usually are not defined, even if a few of the forms of signs that plant viruses reason and that may be encountered by means of a scholar or study employee are described.
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Extra info for Applied Plant Virology
This classification system has now become widely accepted by most plant virologists. 2 and have been described in more detail by Matthews (1979, 1982) and in the 'Handbook of Plant Virus lrifection' (Kurstak, 1981). 4). Unlike the animal virus groups, the plant virus groups are not normally referred to as families, but the two families, the rhabdoviridae and the reoviridae, include viruses that can infect plants, arthropods and vertebrates. Of the remaining 35 groups, 32 have been given ICTV approval, but the barley yellow mosaic virus, cocksfoot mild mosaic virus and satellite virus groups have yet to receive ICTV approval.
Possible members are bean mild mosaic (231), blackgram mottle (237), 34 Plant Virus Classification cowpea mottle (212), elderberry latent (127), narcissus tip necrosis (166), plantain 6 and tephrosia symptomless (256) viruses. Key reference: Morris and Carrington (1988). Cocksfoot mild mosaic virus Group Type member: cocksfoot mild mottle virus (CMMV, lO7). Rl1 : */23: SIS: SlAp. Not yet given an ICTV name. Group members have isometric particles 25 to 30 nm in diameter, containing a genome consisting of ss-RNA.
Potexvirus Group Type member: potato virus X (PVX, 4; group description 200). 1/6 : E/E : S/O. Name derived from potato X. The particles are flexuous rods about 470-580 nm in length and 13 nm 44 Plant Virus Classification in width. The genome is a single species of ss-RNA. Individual group members frequently have a narrow host range although the host range of PYX is wide. All group members are readily transmitted by sap inoculation and there are no confirmed vectors (Purcifull and Edwardson, 1981).