Publication: Conditional lethal disruption of TATA-binding protein gene in Penicillium marneffei
Issued Date
2005-11-01
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ISSN
10960937
10871845
10871845
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2-s2.0-27544459764
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Mahidol University
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SCOPUS
Bibliographic Citation
Fungal Genetics and Biology. Vol.42, No.11 (2005), 893-903
Suggested Citation
Supinya Pongsunk, Alex Andrianopoulos, Sansanee C. Chaiyaroj Conditional lethal disruption of TATA-binding protein gene in Penicillium marneffei. Fungal Genetics and Biology. Vol.42, No.11 (2005), 893-903. doi:10.1016/j.fgb.2005.07.002 Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/16277
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Title
Conditional lethal disruption of TATA-binding protein gene in Penicillium marneffei
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Abstract
Problems can arise in studying the regulation of transcription in fungi if gene disruption is employed to evaluate the role of essential transcription factors. Herein, we have developed a method to characterize the essential genes of Penicillium marneffei. This has been used to examine the significance of P. marneffei TATA-binding protein (TBP) in growth and development. Strains in which the expression of TbpA could be regulated were constructed by placing tbpA under the control of the xylP promoter. The construct was introduced into P. marneffei and the resulting strains were used to produce P. marneffei tbpA deletion strains. Phenotypic examination of growth of the tbpA overexpressing strains revealed that high levels of TbpA expression inhibit fungal growth at conidial germination in both filamentous and yeast forms. Under repressing conditions, the tbpA deletion strains failed to grow at 25°C whilst showing reduced growth at 37°C. The results suggested that TbpA is essential for P. marneffei filamentous growth, but plays a less significant role in growth and development during the yeast phase. © 2005 Elsevier Inc. All rights reserved.