Selman B R
J Bioenerg Biomembr. 1976 Jun;8(3):143-56. doi: 10.1007/BF00748960.
Phenylenediamines have been studied and compared as to their effectiveness in stimulating photosynthetic electron flux in DBMIB-inhibited chloroplasts. It has been found that N-substituted as well as C-substituted p-phenylenediamines accelerate the rate of ferricyanide reduction, a photosystem II photoreaction, under conditions where the radical cations of N-substituted p-phenylenediamines are stable. The P/e2 ratios for these partial reactions are between 0.4 and 0.5; this is taken as evidence that N-substituted p-phenylenediamines are reduced by the chloroplasts close to the outer surface. Both N- and C-substituted p-phenylenediamines are capable of bypassing the site of DBMIB inhibition and restoring electron flow from water to methylviologen. N-substituted p-phenylenediamines appear to be more effective even at high concentrations of DBMIB. The P/e2 ratios for these reactions are on the order of 0.75-1.0; this is taken as evidence that the bypass reaction for N-substituted p-phenylenediamines occurs on the inside of the thylakoid membrane.
人们对苯二胺进行了研究和比较，以了解它们在刺激被二溴百里香酚蓝（DBMIB）抑制的叶绿体中光合电子通量方面的有效性。已发现，在N-取代对苯二胺的自由基阳离子稳定的条件下，N-取代以及C-取代的对苯二胺会加速铁氰化物还原速率，这是光系统II的光反应。这些部分反应的P/e2比率在0.4至0.5之间；这被视为叶绿体在靠近外表面处还原N-取代对苯二胺的证据。N-取代和C-取代的对苯二胺都能够绕过DBMIB抑制位点，并恢复从水到甲基紫精的电子流动。即使在高浓度DBMIB的情况下，N-取代对苯二胺似乎也更有效。这些反应的P/e2比率约为0.75 - 1.0；这被视为N-取代对苯二胺的旁路反应发生在类囊体膜内部的证据。
