Anthocyanin-dependent anoxygenic photosynthesis in coloured flower petals?

Anthocyanin-dependent anoxygenic photosynthesis in coloured flower petals?
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DOI:
10.1038/srep03373
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发表时间:
2013-11-28
期刊:
影响因子:
4.6
通讯作者:
Varduny, Tatyana
Varduny, Tatyana
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Lysenko, Vladimir;Varduny, Tatyana

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无叶绿素的花瓣是由非光合组织组成的。通过光声测量,我们发现矮牵牛(Petunia hybrida)花瓣的光能存储量约为10-12%。我们发现所谓的无叶绿素光合作用是发生在蓝色花瓣(ADAPFP)中的无氧、花青素依赖的过程,伴随着非呼吸性光依赖的氧摄取和1.5倍的光诱导ATP水平增加。利用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形长生物,这对进一步研究可能与液泡相关的光合作用具有重要意义。讨论了ADAPFP的解释方法,我们得出结论,这些结果在已知的花青素光化学方面不是不可能的。
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.
DOI: 10.1155/s1110724304406147
发表时间: 2004
影响因子: --
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