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Anthocyanin-dependent anoxygenic photosynthesis in coloured flower petals?

Lysenko V, Varduny T - Sci Rep (2013)

Bottom Line: 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.

View Article: PubMed Central - PubMed

Affiliation: Southern Federal University, Rostov-on-Don 344090, Russia.

ABSTRACT
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.

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Blue, white and red corollas of P. hybrida ‘Dreams Appleblossom' plants.Photograph by V. Lysenko.
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f5: Blue, white and red corollas of P. hybrida ‘Dreams Appleblossom' plants.Photograph by V. Lysenko.

Mentions: Petunia hybrida ‘Dreams Appleblossom' plants with blue, white and red corollas (Fig. 5) were cultivated to floral maturity in a greenhouse on a vermiculite-perlite-peat (2∶1:2) mixture under standard conditions (temperature 25 ± 1°C; relative air humidity 70%; relative soil moisture 60%; light/dark regime 16 h/8 h; full sun PAR – 1800 μmol photons m−1 s−2 for 6 h and shade light – 300–500 μmol photons m−1 s−2 for 10 h). Fully opened corollas, 5–6 cm in diametre, were collected shortly before anthesis.


Anthocyanin-dependent anoxygenic photosynthesis in coloured flower petals?

Lysenko V, Varduny T - Sci Rep (2013)

Blue, white and red corollas of P. hybrida ‘Dreams Appleblossom' plants.Photograph by V. Lysenko.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC3842538&req=5

f5: Blue, white and red corollas of P. hybrida ‘Dreams Appleblossom' plants.Photograph by V. Lysenko.
Mentions: Petunia hybrida ‘Dreams Appleblossom' plants with blue, white and red corollas (Fig. 5) were cultivated to floral maturity in a greenhouse on a vermiculite-perlite-peat (2∶1:2) mixture under standard conditions (temperature 25 ± 1°C; relative air humidity 70%; relative soil moisture 60%; light/dark regime 16 h/8 h; full sun PAR – 1800 μmol photons m−1 s−2 for 6 h and shade light – 300–500 μmol photons m−1 s−2 for 10 h). Fully opened corollas, 5–6 cm in diametre, were collected shortly before anthesis.

Bottom Line: 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.

View Article: PubMed Central - PubMed

Affiliation: Southern Federal University, Rostov-on-Don 344090, Russia.

ABSTRACT
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.

Show MeSH