Linear mitochondrial plasmids of Fusarium oxysporum contain genes with sequence similarity to genes encoding a reverse transcriptase from Neurospora spp.
Two linear mitochondrial plasmids called pFOXC1 and pFOXC2 from the fungus Fusarium oxysporum were previously described. DNA sequence comparisons indicated that the derived amino acid sequences of both plasmids exhibit similarity to the reverse transcriptase of the Mauriceville and Varkud plasmids of Neurospora spp. The derived amino acid sequence of pFOXC2 has 51% similarity and 32% identity to the Neurospora reverse transcriptase; sequence similarity was greatest for seven blocks of amino acids that are conserved in reverse transcriptases from a wide range of biological sources. Northern analysis suggests that full-length RNAs corresponding to the plasmids are found in representative isolates.
Kistler
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Plant Pathology Department, University of Florida, Gainesville 32611-0680, USA. hck@gnv.ifas.ufl.edu
Benny
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Powell
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D000595:Amino Acid Sequence; D005670:Fusarium / Q000235:genetics*; D008928:Mitochondria / Q000235:genetics*; D008969:Molecular Sequence Data; D009491:Neurospora / Q000235:genetics; D010957:Plasmids / Q000235:genetics*; D012331:RNA, Fungal / Q000032:analysis; D012194:RNA-Directed DNA Polymerase / Q000235:genetics*; D016415:Sequence Alignment; D017386:Sequence Homology, Amino Acid
D012331:RNA, Fungal; D012194:RNA-Directed DNA Polymerase