The closteroviruses, capilloviruses and other similar viruses: a short review

Screening of the closterovirus genome by degenerate primer-mediated polymerase chain reaction

“…Closteroviruses are a loosely defined group of plant viruses that include'10 definite and 12 possible members (Francki et at., 1991;Coffin & Coutts, 1993;Dolja et al, 1994). The group consists of single-component filamentous viruses with positive-strand ssRNA genomes (Bar-Joseph & Murant, 1982;Milne, 1988).…”

Nucleotide sequences of apple stem pitting virus and of the coat protein gene of a similar virus from pear associated with vein yellows disease and their relationship with potex- and carlaviruses

“…The results presented demonstrate that ASPV and the clostero-like virus associated with pear VY do not fall into the subgroup A of closteroviruses as suggested by the modal particle length of 800 nm and particle morphology by negative staining (Coffin &Coutts, 1993;Guinchedi & Poggi Pollini, 1992). Other unclassified viruses with coat proteins of 27K to 28K which share properties with potex-and carlaviruses have been reported from garlic (Sumi et al, 1993) and further nucleotide sequence data are awaited to clarify the taxonomic position of the viruses concerned.…”

“…The particle characteristics of both viruses were as described by Koganezawa & Yanase (1990). Currently ASPV is classified as a tentative member of the closterovirus subgroup A (Coffin & Coutts, 1993) which also contains apple chlorotic leafspot virus (ACLSV). Based on particle morphology and cross reaction with antiserum to ASPV Giunchedi & Poggi Pollini (1992) suggested that the VY-associated virus should be assigned to the closterovirus subgroup containing ACLSV.…”

Complete sequence of an infectious full-length cDNA clone of citrus tatter leaf capillovirus: comparative sequence analysis of capillovirus genomes

“…Their taxonomy has been unclear due to a lack of information other than on morphological features (Coffin & Coutts, 1993). The capillovirus genus includes apple stem grooving virus (ASGV; Lister, 1970), the type member of the group, potato virus T (PVT; Salazar & Harrison, 1978), citrus tatter leaf virus (CTLV; Nishio et al, 1989), lilac chlorotic leaf spot virus (LCLV; Brunt, 1978) and Nandina stem pitting virus (NSPV; Ahmed et al, 1983).…”