Titlebook: Satellites and Defective Viral RNAs; Peter K. Vogt,Andrew O. Jackson Book 1999 The Editor(s) (if applicable) and The Author(s), under excl

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Defective and Defective Interfering RNAs of Monopartite Plus-strand RNA Plant Viruses,ons. Structurally, these molecules are derived from, and represent mutant forms of, the viral genome (. 1981; . et al. 1981). DI RNAs may contain distinct types of modifications; however, the most prevalent is the deletion of one or more large segments of sequence. Despite structural differences, th

Dealing

Replication, Recombination, and Symptom-Modulation Properties of the Satellite RNAs of Turnip Crink TCV is quite widespread, including numerous cruciferous and some noncruciferous hosts (. and . 1958). TCV has a single RNA genome of 4054 bases (. et al. 1989; . et al. 1995) and two subgenomic RNAs of 1721 bases and 1447 bases (. et al. 1987; . and . 1997) (Fig. 1). The genomic RNA is the mRNA for

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Encapsidated Circular Viroid-like Satellite RNAs (Virusoids) of Plants,dentified (. 1987) but, strangely, it was not until 17 years later that a fifth one was reported (. et al. 1998). The five viruses which harbour these circular satellite RNAs are listed in Table 1; all are members of the sobemovirus, or Southern bean mosaic virus, group (. 1987) which contains at le

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Luteovirus-associated Viruses and Subviral RNAs,he most widespread and economically important (. 1994). They cause important diseases worldwide in nearly all of the crops human beings grow for food and fiber (. 1977; . 1994). They are obligately vector transmitted from plant to plant by specific aphids, and, once acquired, a vector aphid may carr