Intrastrain internal transcribed spacer heterogeneity in Ganoderma species

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Intrastrain internal transcribed spacer (ITS) heterogeneity is first reported from Ganoderma, a fungal genus within Basidiomycetes. ITS amplification products from 4 strains, representing 4 Ganoderma species, were cloned and sequenced. Two to five different ITS types were found within a single strain. The clone sequences were analyzed along with other sequences from Ganoderma retrieved from GenBank. The results show that sequence variation within strains varies considerably with species and the heterogeneity may occur in the 3 parts (ITS1, ITS2, and 5.8S) of the ITS region.Key words: intragenomic ITS heterogeneity, polymorphism, Ganoderma.

Nous relatons pour la première fois l'hétérogénéité de l'espaceur interne transcrit (ITS) à l'intérieur des souches de Ganoderma, un genre de champignons appartenant aux basidiomycètes. Les produits d'amplification de l'ITS de 4 souches, représentant 4 espèces de Ganoderma, ont été clonés et séquencés. Les séquences des clones ont été analysées en conjonction avec celle de Ganoderma issus de GenBank. Les résultats démontrent que les variations de séquence à l'intérieur des souches varient considérablement selon l'espèce et que l'hétérogénéité peut être retrouvée dans 3 parties (ITS1, ITS2 et 5,8S) de la région ITS.Mots clés : hétérogénéité intragénomique des ITS, polymorphisme, Ganoderma.[Traduit par la Rédaction]

Document Type: Research Article

Publication date: February 1, 2005

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  • Published since 1954, this monthly journal contains new research in the field of microbiology including applied microbiology and biotechnology; microbial structure and function; fungi and other eucaryotic protists; infection and immunity; microbial ecology; physiology, metabolism and enzymology; and virology, genetics, and molecular biology. It also publishes review articles and notes on an occasional basis, contributed by recognized scientists worldwide.
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