Identification of growth phenotype-related genes in Aspergillus oryzae by heterologous macroarray and suppression subtractive hybridization
| Autor: | Biesebeke, R. te, Levin, A., Sagt, C., Bartels, J., Goosen, T., Ram, A., Hondel, C. van den, Punt, P. |
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| Přispěvatelé: | TNO Kwaliteit van Leven |
| Jazyk: | angličtina |
| Rok vydání: | 2005 |
| Předmět: |
Morphology
molecular cloning phenotype Aspergillus oryzae Genes Fungal Molecular Sequence Data Triticum aestivum complementary DNA morphogenesis Heterologous hybridization suppression subtractive hybridization wheat Gene Expression Regulation Fungal controlled study Biology protein expression Triticum DNA Primers Gene Library nonhuman Base Sequence article genetic transcription seed kernel food and beverages Computational Biology Nucleic Acid Hybridization nucleotide sequence Polarized growth Sequence Analysis DNA Blotting Northern DNA isolation DNA library fungus growth Aspergillus DNA probe priority journal Macroarray hybridization gene expression RNA cell wall Northern blotting Aspergillus niger liquid culture morphological trait biosynthesis Biotechnology |
| Zdroj: | Molecular Genetics and Genomics, 1, 273, 33-42 |
| Popis: | Aspergillus oryzae requires polarized growth for colonization of solid substrates, and this growth phenotype differs from that seen in liquid medium. Various experimental approaches were used to identify genes that are differentially expressed when A. oryzae is grown on wheat kernels and in a wheat-based liquid medium. Hybridization of A. oryzae RNAs to a macroarray bearing cDNAs isolated from a library representing at least 16% of the total number of A. niger genes identified 14 differentially expressed cDNA clones, showing that heterologous macroarray analysis with an A. niger cDNA library can be used to identify regulated gene transcripts in the related species A. oryzae. Moreover, Northern analysis with a selection of eight probes for A. niger genes encoding proteins involved in morphological development and cell wall biosynthesis identified five more differentially expressed genes. A suppression subtractive hybridization procedure revealed another 12 differentially expressed genes. The results presented show that, of the 29 identified genes which are expressed at higher levels during growth on wheat kernels, six encode proteins that are functionally related to polarized growth, four encode products known to be involved in morphogenesis, three code for proteins related to cell wall composition, and nine of the cDNA clones encode novel proteins. These findings pinpoint genes associated with the changes in cellular morphogenesis seen in A. oryzae grown on wheat kernels as opposed to wheat-based liquid medium. © Springer-Verlag 2005. |
| Databáze: | OpenAIRE |
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