title: A common group I intron between a plant parasitic fungus and its host.
abstract: The self-splicing RNAs known as group I introns exist in many organisms, but their distribution is difficult to explain. We hypothesize that group I introns have been transferred between a parasite and its host. We describe here the discovery of a common group I intron sequence between a plant-parasitic fungus, Protomyces inouyei, and its host, Youngia japonica. It strongly supports our theory that the group I intron had been transferred from the host plant to the parasitic fungus in the course of evolution.
mesh_terms: D001203:Ascomycota / Q000235:genetics* / Q000302:isolation & purification; D001483:Base Sequence; D005075:Biological Evolution; D016384:Consensus Sequence; D017931:DNA Primers; D004275:DNA, Ribosomal / Q000235:genetics*; D007438:Introns; D008957:Models, Genetic; D008969:Molecular Sequence Data; D010944:Plants / Q000235:genetics* / Q000469:parasitology*; D016133:Polymerase Chain Reaction; D012326:RNA Splicing; D012331:RNA, Fungal / Q000235:genetics; D012337:RNA, Ribosomal, 18S / Q000235:genetics*; D015183:Restriction Mapping; D012689:Sequence Homology, Nucleic Acid
chemical_list: D017931:DNA Primers; D004275:DNA, Ribosomal; D012331:RNA, Fungal; D012337:RNA, Ribosomal, 18S