Potyvirus Taxonomy (Archives of Virology. Supplementa, 5)

A number of economically important diseases are caused by potyviruses, the largest group of plant viruses. Many of these diseases are distributed worldwide. The development of effective control strategies against viruses is dependent on the availability of reliable methods of identification and detection. To date this has not seemed possible for the potyvirus group, because of its size, complexity, and immense variation. This book brings together the collaborative efforts of exports in the field. It summarizes characteristics of potyviruses which relate to their taxonomy and points to areas which require consideration before an international consensus can be reached. Main topics dealt with in detail are: serological relationships, nucleic acid sequence information, biological properties, and specific problems with several virus subgroups or pairs of viruses. Front Matter....Pages I-IX Front Matter....Pages 1-1 The general properties of potyviruses....Pages 3-16 Application of genome sequence information in potyvirus taxonomy: an overview....Pages 17-23 Inclusion bodies....Pages 25-30 Potyviruses, chaos or order?....Pages 31-46 What is a virus?....Pages 47-53 Front Matter....Pages 55-55 Serology of potyviruses: current problems and some solutions....Pages 57-69 Polyclonal reference antisera may be useful for the differentiation of potyvirus species....Pages 71-74 Proteolytic cleavage of the N-terminal region of potyvirus coat protein and its relation to host recovery and vector transmission....Pages 75-76 Some unusual serological reactions among potyviruses....Pages 77-79 Potyviruses, monoclonal antibodies, and antigenic sites....Pages 81-95 Serological relationships involving potyviral nonstructural proteins....Pages 97-122 Potyvirus serology, sequences and biology....Pages 123-138 Coat protein phylogeny and systematics of potyviruses....Pages 139-170 Front Matter....Pages 171-171 Importance of host ranges and other biological properties for the taxonomy of plant viruses....Pages 173-176 Clustering Potyviridae species on the basis of four major traits....Pages 177-182 Specific infectivity and host resistance have predicated potyviral and pathotype nomenclature but relate less to taxonomy....Pages 183-187 Sources of resistance to viruses in the Potyviridae ....Pages 189-211 Potential for using transgenic plants as a tool for virus taxonomy....Pages 213-215 A potyvirus in nature: indistinct populations....Pages 217-219 Potyvirus taxonomy: potyviruses that affect solanaceous crops....Pages 221-222 Front Matter....Pages 171-171 Biological variants of tobacco etch virus that induce morphologically distinct nuclear inclusions....Pages 223-227 Biological variability of potyviruses, an example: zucchini yellow mosaic virus....Pages 229-234 Designation of potyvirus genera: a question of perspective and timing....Pages 235-237 Fungal transmission of a potyvirus: uredospores of Puccinia sorghi transmit maize dwarf mosaic virus....Pages 239-250 The usefulness of aphid transmission as a taxonomie criterion for potyviruses....Pages 251-255 Front Matter....Pages 257-257 Viruses of the Potyviridae with non-aphid vectors....Pages 259-267 Potyviridae : genus Rymovirus ....Pages 269-276 How important is genome division as a taxonomic criterion in plant virus classification?....Pages 277-282 Sequence data as the major criterion for potyvirus classification....Pages 283-297 The recombinative nature of potyviruses: implications for setting up true phylogenetic taxonomy....Pages 299-304 Front Matter....Pages 305-305 Nomenclature and relationships of some Brazilian leguminous potyviruses related to bean common mosaic and/or passionfruit woodiness viruses....Pages 307-310 Ecology and taxonomy of some European potyviruses....Pages 311-316 Relationships among iris severe mosaic virus (ISMV) isolates....Pages 317-318 Front Matter....Pages 319-319 A comparison of pepper mottle virus with potato virus Y and evidence for their distinction....Pages 321-326 Is pepper mottle virus a strain of potato virus Y?....Pages 327-335 Evidence that pepper mottle virus and potato virus Y are distinct viruses: analyses of the coat protein and 3′ untranslated sequence of a California isolate of pepper mottle virus....Pages 337-345 Front Matter....Pages 347-347 A viewpoint on the taxonomy of potyviruses infecting sugarcane, maize, and sorghum....Pages 349-351 Differentiation of the four viruses of the sugarcane mosaic virus subgroup based on cytopathology....Pages 353-361 Present status of the sugarcane mosaic subgroup of potyviruses....Pages 363-373 Front Matter....Pages 375-375 Bean yellow mosaic virus subgroup; search for the group specific sequences in the 3′ terminal region of the genome....Pages 377-385 Front Matter....Pages 387-387 A proposal for a bean common mosaic subgroup of potyviruses....Pages 389-395 Serological and biological relationships among viruses in the bean common mosaic virus subgroup....Pages 397-406 Strains of bean common mosaic virus consist of at least two distinct potyviruses....Pages 407-414 Serotype A and B strains of bean common mosaic virus are two distinct potyviruses....Pages 415-431 Front Matter....Pages 433-433 A summary of potyvirus taxonomy and definitions....Pages 435-444 Back Matter....Pages 445-450