Department of Botany, University of Minnesota, Saint Paul, Minnesota 55108.
Plant Physiol. 1978 Oct;62(4):612-5. doi: 10.1104/pp.62.4.612.
The oscillations in phenylalanine ammonia-lyase activity from Spirodela polyrhiza and phenylalanine ammonia-lyase and tyrosine ammonia-lyase activities from Lemna perpusilla displayed a circadian rhythm under continuous light. Rhythmicity in enzymic activity could not be detected in continuous darkness since under this condition phenylalanine ammonia-lyase activity remains at a fairly constantly low level. Results from our studies of the oscillatory pattern of the respective activities of phenylalanine and tyrosine ammonia-lyase support their "inseparability."
满江红鱼腥藻和小茨藻的苯丙氨酸解氨酶及酪氨酸解氨酶活性在连续光照下呈现出昼夜节律。在连续黑暗条件下，酶活性没有节律性，因为在此条件下，苯丙氨酸解氨酶活性保持在相当低的水平。我们对苯丙氨酸和酪氨酸解氨酶各自活性的波动模式的研究结果支持它们的“不可分离性”。
