Fock H, Hilgenberg W, Egle K
Fachbereich Biologie der Universität Frankfurt a.M., Frankfurt a.M., Deutschland.
Planta. 1972 Dec;106(4):355-61. doi: 10.1007/BF00384772.
The O2- and CO2-exchange of detached, illuminated leaves from 18 species of plants grown in the Botanical Garden at the University of Frankfurt was measured at 22° C in an open gas stream (400 ppm CO2 supplied to the assimilation chamber) at both 2% O2 and 21% O2.At a low partial pressure of oxygen (2%) the ratios of CO2 uptake to O2 evolution were in all cases near unity, with a mean of 0.93±0.01. In normal atmosphere (21% O2) the CO2/O2 ratios were higher than those in 2% O2 and averaged 1.26±0.01.The results are interpreted as showing that oxygen is involved in the regulation of metabolism and may cause a shift in the direction of carbon flow in photosynthesizing tissue.
在22°C下，于开放气流（向同化室供应400 ppm二氧化碳）中，分别在2%氧气和21%氧气条件下，测定了在法兰克福大学植物园种植的18种植物离体、光照叶片的氧气和二氧化碳交换情况。在低氧分压（2%）下，所有情况下二氧化碳吸收与氧气释放的比率均接近1，平均值为0.93±0.01。在正常大气（21%氧气）中，二氧化碳/氧气比率高于2%氧气条件下的比率，平均为1.26±0.01。结果表明，氧气参与了代谢调节，可能会导致光合组织中碳流方向的转变。
