Transposons in biotechnologically relevant strains of Aspergillus niger and Penicillium chrysogenum |
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| Authors: | Braumann Ilka van den Berg Marco Kempken Frank |
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| Institution: | 1. Sofia University, Department of Geology, Paleontology and Fossil Fuels, Sofia, Bulgaria;2. Institute of Mineralogy and Crystallography, Bulgarian Academy of Sciences, Bulgaria;3. State Key Laboratory of Coal Resources and Safe Mining, China University of Mining and Technology, Beijing, China;4. University of Kentucky, Center for Applied Energy Research, Lexington, KY, USA;1. State Key Laboratory of Ore Deposit Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, China;2. Key Laboratory of Mineral Resources, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China;3. School of Civil and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China;4. CODES ARC Centre of Excellence in Ore Deposits, University of Tasmania, Hobart, TAS 7001, Australia |
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| Abstract: | In the past 15 years, many class I and class II transposons were identified in filamentous fungi. However, little is known about the influence of transposons during industrial strain development. The availability of the complete genome sequences of the industrially relevant fungi Aspergillus niger and Penicillium chrysogenum has enabled an analysis of transposons present in these two fungi. Here, a compilation of the transposon-like sequences identified is provided. We investigated a yet undescribed A. niger retrotransposon, ANiTa1, as well as two P. chrysogenum transposons (PeTra1 and PeTra2), which are the first P. chrysogenum transposons ever described, in more detail. Analysis of the genomic distribution of selected transposable elements in five strains of A. niger and seven strains of P. chrysogenum revealed the transposon distribution to be virtually identical. However, one element, Vader-previously published-from A. niger, showed strain-specific differences in transposon distribution, suggesting transposition activity during classical strain improvement programs. |
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| Keywords: | Aspergillus niger Penicillium chrysogenum Transposon Vader PeTra ANiTa1 |
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