Armstrong J E, Calder J A
Appl Environ Microbiol. 1978 May;35(5):858-62. doi: 10.1128/aem.35.5.858-862.1978.
Light-induced alkalinization of the extracellular medium was found to be a common feature of the primary photosynthetic process of several marine microalgae. The light-induce PH increase of suspensions of whole cells was immediately and severely inhibited by a single dose of water-soluble components from crude and fuel oils. Differential effects on the rates of microalgal photosynthetic O2 evolution and cell suspension pH increase suggest different toxicity mechanisms of the water-soluble components of no. 2 fuel oil as compared with Southern Louisiana and Jay Crude oils. These short-term studies on the nature of sublethal petroleum toxicity to microalgae indicate that the primary effect may be through direct action on the energy-yielding electron transport systems.
光诱导细胞外介质碱化被发现是几种海洋微藻初级光合作用过程的一个共同特征。全细胞悬浮液的光诱导pH值升高会被来自原油和燃料油的单剂量水溶性成分立即且严重地抑制。与南路易斯安那原油和杰伊原油相比，2号燃料油的水溶性成分对微藻光合放氧速率和细胞悬浮液pH值升高的影响不同，这表明其毒性机制不同。这些关于石油对微藻亚致死毒性本质的短期研究表明，主要影响可能是通过直接作用于能量产生的电子传递系统。
