Department of Biology, Yale University, New Haven, Connecticut 06520.
Plant Physiol. 1979 Sep;64(3):379-81. doi: 10.1104/pp.64.3.379.
The rate of O(2) uptake by excised Samanea pulvini oscillates with a circadian rhythm during 52 hours of darkness. Rates of respiration increase during pulvinar opening and decrease prior to and during closure, consistent with the concept that opening requires a greater expenditure of energy. Externally supplied sucrose, necessary for perpetuation of the leaflet movement rhythm, has a small promotive effect on the rate of respiration.
在 52 小时的黑暗中，被切除的金合欢叶褥组织中 O(2) 的摄取率随昼夜节律而波动。呼吸速率在叶褥组织打开时增加，在关闭前和关闭时减少，这与开放需要更大能量支出的概念一致。为了使小叶运动节律持续下去，外部供应的蔗糖对呼吸速率有很小的促进作用。
