Emad Darvishi ,۱,۲,۳ Mansoor Omidi,۱* Ali-Akbar Booshehri,۱ Ashkan Golshani,۲,۳  Myron Smith۲,۳


۱Department of Agronomy and Plant Breeding, College of Agriculture, University of Tehran, Karaj, Iran

۲Department of Biology, Carleton University, 1125 Colonel By Drive, Ottawa, K1S 5B6, Canada

۳Ottawa Institute of Systems Biology, Carleton University, 1125 Colonel By Drive, Ottawa, K1S5B6, Canada



The antifungal activity of thymol was evaluated using the broth microdilution assay with Saccharomyces cerevisiae. The results indicate that minimum inhibitory concentration (MIC۱۰۰) for thymol is in the range of 80-100 µg/ml. Chemical-genetic profile analysis was completed with thymol using ~4700 haploid S. cerevisiae gene deletion mutants to find out the mode of action of thymol in the yeast cell. 76 S. cerevisiae deletion mutants with the greatest degree of susceptibility to subinhibitory concentration of thymol (50 µg/ml) were selected by digital analysis. Cellular roles of deleted genes in the most susceptible mutants and gene ontology annotation analysis using online gene profiling software (Profcom, gprofiler and GeneMANIA) indicate that the targets for thymol include pathways involved in telomere length maintenance. Finally, Spot test analysis of targeted mutants confirmed the accuracy of our large-scale approach to detect drug sensitive mutants.


[۱]               CLSI, Clinical and Laboratory Standards Institute.2008, Approved Standard M27- A3.

[۲]               Tong, AH.; Evangelista, M.; Parsons, AB.; Xu, H.; Bader, GD.; Page, N.; Robinson, M.; Raghibizadeh, S.; Hogue, CW.; Bussey, H.; Andrews, B.; Tyers, M.; Boone, C.; Science, ۲۰۰۱, ۲۹۴, ۲۳۶۴–۲۳۶۸.

[۳]               Parsons, AB.; Brost, R.L.; Ding, H.; Li, Z.; Zhang, C.; Sheikh, B.; Brown, G.W.; Kane, P.M.; Hughes, T.R.; Boone, C. Nat. Biotechnol. ۲۰۰۴, ۲۲, ۶۲–۶۹.

[۴]               Galván, I.J.; Mir-Rashed, N.; Jessulat, M.; Atanya, M.; Golshani, A.; Durst, T.; Petit, P.; Amiquet, V.T.; Boekhout, T.; Summerbell, R.; Cruz, I.; Arnason, J.T.; Smith, M.L. Phytochemistry.۲۰۰۸, ۶۹,۷۳۸-۷۴۶.

[۵]               Memarian, N.; Jessulat, M.; Alirezaie, J.; Mir-Rashed, N.; Xu, J.; Zareie, M.; Smith, M.; Golshani, A. BMC Bioinform. ۲۰۰۷, ۸, ۱۱۷.

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