Hesse M, Kulandaivelu G, Böger P
Arch Microbiol. 1977 Mar 1;112(2):141-5. doi: 10.1007/BF00429326.
Activity of the photosynthetic apparatus of synchronized cultures was studied with the xanthophycean alga Bumilleriopsis filiformis, following the kinetics of fluorescence induction and photooxidation of cytochrome f (= cytochrome c-553) of intact cells. During the beginning of the cell-division phase, minimum cellular photosynthetic activity is observed and a maximum after its completion, which is accompanied by corresponding changes in Hill reaction activity and re-reduction of cytochrome f by photosystem II light. At minimum activity, the level of steady state fluorescence was higher than at the maximum. This is due, at least in part, to the diminished electron flow between the two photosystems seemingly caused by decreased photosystem I activity. This explanation was suported by the kinetics of cytochrome-f photooxidation. Thus, electron transport activity of both photosystems appears to vary during the cell cycle.
利用丝状黄藻Bumilleriopsis filiformis同步培养物，通过完整细胞荧光诱导动力学和细胞色素f（=细胞色素c-553）的光氧化作用，研究了光合机构的活性。在细胞分裂期开始时，观察到细胞光合活性最低，而在分裂完成后达到最高，同时伴随着希尔反应活性的相应变化以及光系统II光对细胞色素f的再还原。在最低活性时，稳态荧光水平高于最高活性时。这至少部分是由于两个光系统之间的电子流减少，这似乎是由光系统I活性降低引起的。细胞色素f光氧化动力学支持了这一解释。因此，两个光系统的电子传递活性在细胞周期中似乎都有所变化。
