Efficient GFP expression in the mushrooms and requires introns
Burns, C., Gregory, K., Kirby, M., Cheung, M.-K., Riquelme, M., Elliott, T., Challen, M., Bailey, A. and Foster, G. (2005) Efficient GFP expression in the mushrooms and requires introns. Fungal Genetics and Biology, 42 (3). pp. 191-199. ISSN 1087-1845
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Publisher's URL: http://dx.doi.org/10.1016/j.fgb.2004.11.005
We have developed a “Molecular Toolkit” comprising interchangeable promoters and marker genes to facilitate transformation of homobasidiomycete mushrooms. We describe the evaluation of a range of promoters in the homobasidiomycetes Agaricus bisporus and Coprinus cinereus using green fluorescent protein (GFP) as a reporter gene; the C. cinereus trp1 promoter and A. bisporus trp2 and gpdII promoters proving successful in driving expression in C. cinereus, with the gpdII promoter also functioning in A. bisporus. Our investigations demonstrate that a prerequisite for GFP expression in C. cinereus and A. bisporus is the presence of an intron. This is the first reported expression of GFP in either C. cinereus or A. bisporus.