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  • 1
    ISSN: 1432-0983
    Keywords: Trichoderma ; Transformation ; Hygromycin B resistance ; Benomyl resistance
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary We have developed a transformation system for Trichoderma hamatum and Trichoderma harzianum Rifai, using dominant markers for selection based on the Escherichia coli hygromycin B phosphotransferase gene (hph) and the β-tubulin gene (bml) from Neurospora crassa, respectively. Transformation frequencies and protoplast regeneration were low in both species. All the T. hamatum hygromycin-resistant transformants analysed were mitotically stable, in contrast to those of T. harzianum derived by benomyl resistance, in which only 50% of the transformants analysed were stable. Molecular analysis of transformants showed the integration of the transforming DNA into the genome and indicated that the number and sites of integration varied among the transformants.
    Type of Medium: Electronic Resource
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