Andreeva A S, Tikhonov A N, Ruuge E K
Biofizika. 1979 May-Jun;24(3):548-9.
The state I in equilibrium state II transients in bean leaves were studied by ESR method at various temperatures. P700 photooxidation induced by far-red light after leaf adaptation to darkness demonstrated two phases. This kinetics correlated with two overshuts in the kinetics of P700+ reduction observed after additional switching on the light exciting Photosystem II. In the atmosphere of gaseous nitrogen P700 behaviour was reversibly modified. Multiphase character of P700 kinetics correlated with the state I in equilibrium state II phenomenon as measured by chlorophyll a fluorescence from Photosystem II. The rate-limiting step at the acceptor side of Photosystem I electron transport chain may be considered as a point controlling the state of intact chloroplasts.
利用电子自旋共振（ESR）方法，在不同温度下研究了菜豆叶片从平衡态I到平衡态II转变过程中的瞬态变化。叶片适应黑暗后，远红光诱导的P700光氧化呈现出两个阶段。这种动力学与在额外开启激发光系统II的光后观察到的P700+还原动力学中的两个过冲相关。在气态氮气氛中，P700的行为发生了可逆变化。P700动力学的多相特征与通过光系统II叶绿素a荧光测量的平衡态II中的状态I现象相关。光系统I电子传递链受体侧的限速步骤可被视为控制完整叶绿体状态的一个控制点。
