Article ID Journal Published Year Pages File Type
2060846 Mycoscience 2013 5 Pages PDF
Abstract

Agrobacterium tumefaciens-mediated transformation (AMT) was successfully applied to mycelia of the 3 economically important mushrooms Hypsizigus marmoreus, Flammulina velutipes, and Grifola frondosa. We used the hygromycin B resistance gene (hph) under the control of the Cryptococcus neoformans actin promoter. Eighty-six resistant strains of H. marmoreus, 4 of F. velutipes, and 2 of G. frondosa were obtained. All transformants were highly resistant to hygromycin B, suggesting that the C. neoformans actin promoter has a potential universal promoter activity in basidiomycetes. Southern analysis revealed random but single integration of the hph gene.

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