Bryan A M, Olafsson P G
Bull Environ Contam Toxicol. 1978 Mar;19(3):374-81. doi: 10.1007/BF01685813.
Aroclor 1242 is inhibitory to long-term batch growth of Euglena gracilis at 10 ppm. Exposure to PCB's, subsequent to an initial drop of 50% in the first 30 minutes, does not appear to inhibit photosynthesis on a per cell basis over the time span of four hours. Consequently our experimental findings suggest that inhibition of population growth does not lie directly in the photosynthetic pathway despite the initial inhibition by Aroclor 1242 on Euglena gracilis in "light". "Dark" absorption of bicarbonate appears to decrease with increased PCB exposure. This decrease may be causally related to the population growth inhibition observed.
10 ppm的Aroclor 1242对纤细裸藻的长期分批培养生长具有抑制作用。在最初30分钟内下降50%之后，暴露于多氯联苯中，在四个小时的时间跨度内，似乎并不会以单个细胞为基础抑制光合作用。因此，我们的实验结果表明，尽管Aroclor 1242最初在“光照”条件下对纤细裸藻有抑制作用，但种群生长的抑制并非直接源于光合途径。随着多氯联苯暴露量的增加，碳酸氢盐的“暗”吸收似乎会减少。这种减少可能与观察到的种群生长抑制存在因果关系。
