TY - JOUR
T1 - Viral sequences integrated into plant genomes
AU - Harper, Glyn
AU - Hull, Roger
AU - Lockhart, Ben
AU - Olszewski, Neil
N1 - Copyright:
Copyright 2008 Elsevier B.V., All rights reserved.
PY - 2002
Y1 - 2002
N2 - Sequences of various DNA plant viruses have been found integrated into the host genome. There are two forms of integrant, those that can form episomal viral infections and those that cannot. Integrants of three pararetroviruses, Banana streak virus (BSV), Tobacco vein clearing virus (TVCV), and Petunia vein clearing virus (PVCV), can generate episomal infections in certain hybrid plant hosts in response to stress. In the case of BSV and TVCV, one of the parents contains the integrant but is has not been seen to be activated in that parent; the other parent does not contain the integrant. The number of integrant loci is low for BSV and PVCV and high in TVCV. The structure of the integrants is complex, and it is thought that episomal virus is released by recombination and/or reverse transcription. Geminiviral and pararetroviral sequences are found in plant genomes although not so far associated with a virus disease. It appears that integration of viral sequences is widespread in the plant kingdom and has been occurring for a long period of time.
AB - Sequences of various DNA plant viruses have been found integrated into the host genome. There are two forms of integrant, those that can form episomal viral infections and those that cannot. Integrants of three pararetroviruses, Banana streak virus (BSV), Tobacco vein clearing virus (TVCV), and Petunia vein clearing virus (PVCV), can generate episomal infections in certain hybrid plant hosts in response to stress. In the case of BSV and TVCV, one of the parents contains the integrant but is has not been seen to be activated in that parent; the other parent does not contain the integrant. The number of integrant loci is low for BSV and PVCV and high in TVCV. The structure of the integrants is complex, and it is thought that episomal virus is released by recombination and/or reverse transcription. Geminiviral and pararetroviral sequences are found in plant genomes although not so far associated with a virus disease. It appears that integration of viral sequences is widespread in the plant kingdom and has been occurring for a long period of time.
KW - Activation of integrated viral sequences
KW - Banana streak virus
KW - Integrated viral sequences
KW - Petunia vein clearing virus
KW - Tobacco vein clearing virus
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U2 - 10.1146/annurev.phyto.40.120301.105642
DO - 10.1146/annurev.phyto.40.120301.105642
M3 - Review article
C2 - 12147756
AN - SCOPUS:0036029014
SN - 0066-4286
VL - 40
SP - 119
EP - 136
JO - Annual Review of Phytopathology
JF - Annual Review of Phytopathology
ER -