Circadian Rhythm of ATP Contents in Synechococcus RF-1

聚球藻RF-1的ATP含量呈現概日韻律的變化

洪良銘(Liang-Ming Hung) ； 陳宗憲(Tsung-Hsien Chen)

《Bio Formosa》 38卷1期 (2003/06) Pp. 1-5

https://doi.org/10.6248/BF.2003.38(1).01

摘要

經過三次連續12/12小時光／暗週期的處理後，聚球藻Synechococcus RF-1的ATP含量在接下來的連續72小時光照期間呈現韻律性的變化。ATP含量韻律的增減相位和先前週期處理的光／暗相位互相對應。此韻律的週期均為24小時，在24°C到35°C的生理溫度範圍內不大受溫度的影響。如果對兩個對照組加以光／暗相位相反（相差12小時）的前處理，這兩組的ATP含量在接下來的連續光照期間所呈現的韻律亦呈現相反的相位。這些結果可證明聚球藻RF-1的ATP含量受到概日韻律生理時鐘的控制。

關鍵字

概日韻律 ； ATP ； 聚球藻 RF-1

並列摘要

In the cyanobacterium Synechococcus RF-1, ATP contents changed rhythmically in continuous white light during a 72-h observation period, after the culture had been entrained in three successive 12/12 h light/dark cycles. The increase and decrease in ATP contents corresponded to the light and dark period, respectively, of the L/D cycle treatment given previously. The rhythm had a period of about 24 h and was insensitive to temperature from 24°C to 35°C. When two cultures were previously entrained 12 h out of phase, the rhythms were also out of phase. These observations demonstrate that cellular ATP content in Synechococcus RF-1 is controlled by the circadian clock.

並列關鍵字

Circadian rhythm ； ATP ； Synechococcus RF-1