原核生物聚球藻属RF-1的昼夜节律
Circadian Rhythm of the Prokaryote Synechococcus sp. RF-1.
作者信息
Huang T C, Tu J, Chow T J, Chen T H
机构信息
Institute of Botany, Academia Sinica, Nankang, Taipei, Taiwan 11529, Republic of China.
出版信息
Plant Physiol. 1990 Feb;92(2):531-3. doi: 10.1104/pp.92.2.531.
Abstract
The prokaryotic Synechococcus sp. RF-1 exhibited a nitrogen fixation circadian rhythm with characteristics remarkably similar to the circadian rhythm of eukaryotes. The rhythm had a free-running period of about 24 hours when the length of the preen-trained cycle did not differ too much from 24 hours, and it was insensitive to changes in temperature from 22 degrees C to 33 degrees C. Because the endogenous rhythm of nitrogen fixation was not affected by a phase-shift of its previous cycles, the circadian rhythm in Synechococcus sp. RF-1 was not considered to be controlled simply by a feedback mechanism.
摘要
原核生物聚球藻属（Synechococcus sp.）RF-1呈现出固氮昼夜节律，其特征与真核生物的昼夜节律极为相似。当预训练周期的时长与24小时相差不大时，该节律的自由运行周期约为24小时，并且在22摄氏度至33摄氏度的温度变化下不敏感。由于固氮的内源性节律不受其先前周期相位变化的影响，因此聚球藻属（Synechococcus sp.）RF-1中的昼夜节律不被认为是简单地由反馈机制控制的。
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