Science. 1961 Aug 11;134(3476):391-2. doi: 10.1126/science.134.3476.391.
Absorption studies, made on suspensions of Anacystis nidulans, Chlorella pyrenoidosa, and Porphyridium cruentum by means of an integrating spectrophotometer, suggest the existence of pigments absorbing "extreme red" light in the 720- to 800-mmicro region. In the bluegreen alga Anacystis, one pigment of this type exists, which produces a relatively strong absorption band at 750 mmicro. In the green alga Chlorella and the red alga phyridium, two considerably weaker absorption bands appear, at 730 to 740 mmicro and 750 to 760 mmicro, which may be due to one or two pigments. These pigments must be responsible for the photoinhibition of photosynthesis observed in these algae in the same spectral region; as yet, no photoinhibition has been observed in Anacystis.
利用积分分光光度计对鱼腥藻、蛋白核小球藻和紫球藻的悬浮液进行的吸收研究表明，在 720-800μmicro 范围内存在吸收“极端红光”的色素。在蓝绿藻鱼腥藻中，存在一种这样的色素，在 750μmicro 处产生一个相对较强的吸收带。在绿藻小球藻和红藻紫球藻中，出现了两个较弱得多的吸收带，在 730 到 740μmicro 和 750 到 760μmicro，这可能是由于一个或两个色素。这些色素一定是这些藻类在同一光谱区域观察到的光合作用光抑制的原因；然而，在鱼腥藻中尚未观察到光抑制。
