Science. 1960 Aug 12;132(3424):421. doi: 10.1126/science.132.3424.421.
The second Emerson effect can be observed not only in photosynthesis but also in the photoreduction of quinone by Chlorella cells. This shows that this effect is not due to respiration and is not associated with the carbon dioxide-reducing phase of photosynthesis. Peaks at 650 and 670 mmicro in the action spectra of this effect, in the case of quinone reductions as well as in that of photosynthesis in Chlorella, show that light absorbed by chlorophyll b as well as that absorbed by chlorophyll a 670 can effectively supplement far-red light (> 680 mmicro) in both reactions; light absorbed by chlorophyll a 680 cannot do so.
第二个爱默生效应不仅可以在光合作用中观察到，也可以在小球藻细胞的醌的光还原中观察到。这表明，这种效应不是由于呼吸作用引起的，也与光合作用的二氧化碳还原阶段无关。在醌还原和小球藻光合作用的作用光谱中，650 和 670nm 处的峰值表明，叶绿素 b 吸收的光以及叶绿素 a 670 吸收的光可以有效地补充两种反应中的远红光（>680nm）；而叶绿素 a 680 吸收的光则不能。
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