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- W76395989 abstract "Abstract : Eukaryotic marine algal viruses are large, dsDNA viruses. Feldmannia species Virus (resolved in two genome size classes 158 and 178 kbp) was developed as our prototype study systems. This virus infects marine brown algae. In nature sporophytic plants develop both plurilocular (mitotic) sporangia producing 2N spores and unilocular (meiotic) sporangia producing N spores. 2N spores normally yield adult sporophytes; haploid spores produce male and female gametophytes whose spores are the gametes for the sexual cycle. In the virus infected plant this life cycle is altered. Sporangia from virus-infected sporophytes do not produce spores. Instead unilocular sporangia contain virus particles. We show that the virus genomes exists in an integrated form within all other cells. All together the data suggest an integration/excision mechanism that employs an integrase/recombinase and conservative site-specific recombination. This enzyme complex appears to include topoisomerase-like activities which recognize sites within the virus and host. Unlike previously described systems we expect blunt end cutting and ligation or single bp. A large family of 173 bp repeat elements in the FsV genome was characterized. Two ORFs for 'RING' zinc finger bearing genes were found as were two protein kinase genes. Northern blots demonstrated 6 major and 18 minor transcripts. The most abundant transcript was the major structural protein. Sequence analysis indicated significant homology with proteins of Chlorella-virus, Iridioviruses and African Swine Virus." @default.
- W76395989 created "2016-06-24" @default.
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- W76395989 date "1997-10-01" @default.
- W76395989 modified "2023-09-24" @default.
- W76395989 title "Mechanisms of Viral Infection in Marine Brown Algae" @default.
- W76395989 doi "https://doi.org/10.21236/ada330610" @default.
- W76395989 hasPublicationYear "1997" @default.
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