2,4-DICHLORPHENOXICACETIC ACID AT LOW CONCENTRATIONS ENHANCES REPRODUCTIVE ABILITY AND OXIDATIVE STRESS RESISTANCE OF YEAST SACCHAROMYCES CEREVISIAE
2,4-dichlorphenoxicacetic acid (2,4-D) is one of the most widely used herbicides with well documented toxic effects on non-target organisms. In this study, the effect of low concentrations of 2,4-D on reproductive activity and resistance of yeast <em>S. cerevisiae</em> to oxidative stres...
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| Format: | Book |
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Vasyl Stefanyk Precarpathian National University,
2015-05-01T00:00:00Z.
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| Summary: | 2,4-dichlorphenoxicacetic acid (2,4-D) is one of the most widely used herbicides with well documented toxic effects on non-target organisms. In this study, the effect of low concentrations of 2,4-D on reproductive activity and resistance of yeast <em>S. cerevisiae</em> to oxidative stress was evaluated. Supplementation of the cultivation medium with 0.1-100 µM 2,4-D did not affect the rate of yeast growth. In early stationary phase, yeast cultures grown with 0.1 and 1 µM 2,4-D had higher number of reproductively active cells than control ones (without 2,4-D). In exponential phase, <em>S. cerevisiae</em> cells grown in the presence of 1-100 µM 2,4-D were more resistant to hydrogen peroxide comparing to control ones. Thus, the herbicide increased reproductive potential and cross-resistance to oxidative stress in yeast but the effective concentrations of 2,4-D were different for these phenomena. In summary, the results suggest possible involvement of certain hormetic mechanisms in the influence of 2,4-D at low concentrations on yeast. |
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| Item Description: | 2311-0155 2413-2349 10.15330/jpnu.2.1.93-99 |