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核心技术专利：CN118964589B侵权必究

核心技术专利：CN118964589B侵权必究

Arch Microbiol. 1977 Mar 1;112(2):179-85. doi: 10.1007/BF00429333.

The effects of carbon dioxide, oxygen and pH on the inversion intensity of phototaxis of Chlamydomonas reinhardtii have been investigated. 2. With decreasing with CO2 tension the inversion intensity is decreased. 3. The gassing with CO2 can be substituted by hydrogencarbonate only to a small extent (20%). On the other hand, the effect of decreasing CO2 tension can be prevented also only in part by adjusting the pH to about 6.5-7.0. Thus the effect of CO2 on the inversion intensity of phototaxis is obviously a composite of a true CO2 effect and an effect of the concomitant pH change. 4. Oxygen has only a slight effect. In presence of oxygen (air) the phototactic reaction values are somewhat lower than in its absence. 5. Under certain conditions circadian rhythms seem to be initiated by changing oxygen as well as CO2 tensions. 6. Based on these results some contradictory results of older investigations are discussed.

研究了二氧化碳、氧气和pH对莱茵衣藻趋光性反转强度的影响。2. 随着二氧化碳张力的降低，反转强度降低。3. 用碳酸氢盐替代二氧化碳通气的程度很小（20%）。另一方面，通过将pH调节至约6.5 - 7.0，也只能部分防止二氧化碳张力降低的影响。因此，二氧化碳对趋光性反转强度的影响显然是真正的二氧化碳效应和伴随的pH变化效应的综合。4. 氧气的影响很小。在有氧气（空气）存在时，趋光反应值略低于无氧气时。5. 在某些条件下，昼夜节律似乎是由改变氧气和二氧化碳张力引发的。6. 基于这些结果，讨论了早期研究中的一些矛盾结果。

Arch Microbiol. 1977 Mar 1;112(2):179-85. doi: 10.1007/BF00429333.

The effects of carbon dioxide, oxygen and pH on the inversion intensity of phototaxis of Chlamydomonas reinhardtii have been investigated. 2. With decreasing with CO2 tension the inversion intensity is decreased. 3. The gassing with CO2 can be substituted by hydrogencarbonate only to a small extent (20%). On the other hand, the effect of decreasing CO2 tension can be prevented also only in part by adjusting the pH to about 6.5-7.0. Thus the effect of CO2 on the inversion intensity of phototaxis is obviously a composite of a true CO2 effect and an effect of the concomitant pH change. 4. Oxygen has only a slight effect. In presence of oxygen (air) the phototactic reaction values are somewhat lower than in its absence. 5. Under certain conditions circadian rhythms seem to be initiated by changing oxygen as well as CO2 tensions. 6. Based on these results some contradictory results of older investigations are discussed.

研究了二氧化碳、氧气和pH对莱茵衣藻趋光性反转强度的影响。2. 随着二氧化碳张力的降低，反转强度降低。3. 用碳酸氢盐替代二氧化碳通气的程度很小（20%）。另一方面，通过将pH调节至约6.5 - 7.0，也只能部分防止二氧化碳张力降低的影响。因此，二氧化碳对趋光性反转强度的影响显然是真正的二氧化碳效应和伴随的pH变化效应的综合。4. 氧气的影响很小。在有氧气（空气）存在时，趋光反应值略低于无氧气时。5. 在某些条件下，昼夜节律似乎是由改变氧气和二氧化碳张力引发的。6. 基于这些结果，讨论了早期研究中的一些矛盾结果。