1996
DOI: 10.1099/0022-1317-77-11-2839
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In vitro-generated 'inverse' chimeric Coleus blumei viroids evolve in vivo into infectious RNA replicons

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Cited by 31 publications
(16 citation statements)
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“…Coleus blumei (coleus) is an ornamental plant grown worldwide and it is susceptible to infection by several Coleus blumei viroid (CbVd) species in the genus Coleviroid, family Pospiviroidae. At present, six main viroids infecting coleus have been reported, and they are CbVd-1 to CbVd-6 (Fonseca et al, 1989;Spieker, 1996aSpieker, , 1996bSpieker et al, 1996;Hou et al, 2009aHou et al, , 2009b (Fig. 1).…”
Section: Introductionmentioning
confidence: 97%
“…Coleus blumei (coleus) is an ornamental plant grown worldwide and it is susceptible to infection by several Coleus blumei viroid (CbVd) species in the genus Coleviroid, family Pospiviroidae. At present, six main viroids infecting coleus have been reported, and they are CbVd-1 to CbVd-6 (Fonseca et al, 1989;Spieker, 1996aSpieker, , 1996bSpieker et al, 1996;Hou et al, 2009aHou et al, , 2009b (Fig. 1).…”
Section: Introductionmentioning
confidence: 97%
“…Autonomous replication and seed transmission of both CbVd-5 and CbVd-6 have recently been demonstrated [38]. The viroid known as coleus blumei viroid A1 (also referred to as coleus blumei viroid 4-1) is a case apart because it derives from a chimeric cDNA construct generated in the laboratory, thus representing a synthetic viroid [60] that will not be included in future viroid classification schemes.…”
Section: Recombinant Viroidsmentioning
confidence: 99%
“…Three species have been recognized by ICTV in a previous classification scheme based on the arbitrary limit of 90 % sequence identity [21]. Since its first description, it has been clear that coleus blumei viroid 2 (CbVd-2) is a viroid chimera composed of the right and left halves of the rodlike secondary structures of coleus blumei viroid 1 (CbVd-1) and coleus blumei viroid 3 (CbVd-3), respectively [60]. Even though biological differences between these three viroids have never been demonstrated, they have been maintained as members of separate species.…”
Section: Recombinant Viroidsmentioning
confidence: 99%
“…Unlike the strategy followed previously for the construction of chimeric viroids (Visvader and Symons, 1986;Owens et al 1990;Gora et al, 1996;Spieker, 1996;Sano et a., 1998;Reawarkaron and Semancik, 1998), the PCR-based novel approach used in the present study did not rely on the availability of shared restriction endonuclease sites for the exchange of segments between the two viroids. With this method, any choice of chimeric viroids can be constructed.…”
Section: Resultsmentioning
confidence: 98%