Screening for Differentially Expressed Genes in Endophytic Fungus Strain 39 During Co-culture with Herbal Extract of its Host Dioscorea nipponica Makino
| Autor: | Ying Xu, Dan Yu, Jin-Chao Mou, Xiao-Wei Du, Li-Juan Wang, Wan-Li Wang, Yan Liu, Jun-Kai Wu, Chang-Hong Ding, Xiao-Meng Xu, Fan-Jia Meng |
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| Rok vydání: | 2014 |
| Předmět: |
Differential display
Fungal protein Strain (chemistry) Dioscorea Plant Extracts Squalene monooxygenase Fungi General Medicine Saponins Biology biology.organism_classification Applied Microbiology and Biotechnology Microbiology Fungal Proteins Reverse transcription polymerase chain reaction Squalene chemistry.chemical_compound chemistry Biochemistry Biotransformation Gene Expression Regulation Fungal Endophytes |
| Zdroj: | Current Microbiology. 69:517-524 |
| ISSN: | 1432-0991 0343-8651 |
| Popis: | Strain 39 is an endophytic fungus which was isolated from Dioscorea nipponica Makino (DNM). After Strain 39 co-cultured with ethanol extract of DNM rhizomes for several days, the content of saponins in this culture mixture would be obviously increased. To analyze the mechanism of this microbial transformation, we used the differential display reverse transcription polymerase chain reaction (DDRT-PCR) method to compare the transcriptomes between Strain 39 cultured in normal PD medium and in PD medium which added ethanol extract of DNM rhizomes. We amplified 29 DDRT-PCR bands using 12 primer combinations of three anchored primers and five random primers, and six bands were re-amplified. Analysis of real-time PCR and sequence alignment showed that three clones were up-regulated in sample group: squalene epoxidase, squalene synthase, and catalase, one clone was expressed only in sample group. The possible roles and origins of the above genes were discussed, and the molecular mechanism of Strain 39 biotransformation was speculated. This study is the first report of the molecular biotransformation mechanism of saponins production by endophytic fungus of DNM. |
| Databáze: | OpenAIRE |
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