Growth inhibition and ultra-structural changes of Saccharomyces cerevisiae by paraquat
1986
Park, Y.S. | Kim, M.L. | Choi, K.H. (Hyoseung Women's Univ., Taegu (Korea R.). Dept. of Food Science and Nutrition)
Exponentially growing cells of S. cerevisiae were cultivated in the concomitant presence of 2 x 10** (-3) M paraquat for 12 hrs. Cellular growth became slower as the time passed and then, it was completely inhibited after 6 hours of cultivation. More than 70 % of the yeast cells were killed within 12 hrs of paraquat treatment. It was observed that size of the yeast cell varied from 4.5 x 5.5 micro m to 2.5 x 3.5 micro m in diameter, while that of control was uniform. The number of budding cells became rare, cell wall of the paraquat treated cell was thinner (0.15 micro m) than that of control cell (0.20 micro m)
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