Lysenko Vladimir, Varduny Tatyana
Southern Federal University, Rostov-on-Don 344090, Russia.
Sci Rep. 2013 Nov 28;3:3373. doi: 10.1038/srep03373.
Chlorophylless flower petals are known to be composed of non-photosynthetic tissues. Here, we show that the light energy storage that can be photoacoustically measured in flower petals of Petunia hybrida is approximately 10-12%. We found that the supposed chlorophylless photosynthesis is an anoxygenic, anthocyanin-dependent process occurring in blue flower petals (ADAPFP), accompanied by non-respiratory light-dependent oxygen uptake and a 1.5-fold photoinduced increase in ATP levels. Using a simple, adhesive tape stripping technique, we have obtained a backside image of an intact flower petal epidermis, revealing sword-shaped ingrowths connecting the cell wall and vacuole, which is of interest for the further study of possible vacuole-related photosynthesis. Approaches to the interpretations of ADAPFP are discussed, and we conclude that these results are not impossible in terms of the known photochemistry of anthocyanins.
已知无叶绿素的花瓣由非光合组织构成。在此，我们表明，在矮牵牛花瓣中可通过光声测量的光能储存约为10%-12%。我们发现，所谓的无叶绿素光合作用是一种发生在蓝色花瓣中的不产氧、花青素依赖过程（ADAPFP），伴随着非呼吸性光依赖型氧气摄取以及ATP水平1.5倍的光诱导增加。通过一种简单的胶带剥离技术，我们获得了完整花瓣表皮的背面图像，揭示了连接细胞壁和液泡的剑状内生长物，这对于进一步研究可能与液泡相关的光合作用具有重要意义。文中讨论了对ADAPFP的解释方法，并且我们得出结论，就已知的花青素光化学而言，这些结果并非不可能。
