Anthocyanin-dependent anoxygenic photosynthesis in coloured flower petals?

Лысенко, В. С.; Varduny, Tatyana

doi:10.1038/srep03373

Cited by 13 publications

(18 citation statements)

References 30 publications

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“…Broennum-Hansen and Flink 380 reported that the anthocyanins containing the disaccharide sambubiose (a component of some glycosides), 380 are more stable than glucose containing monosaccharidic anthocyanins. Thus, the choice is not a simple task, because anthocyanin extracts are strongly affected by pH, 382 processing and storage temperature, 383 concentration, 384 aggregation of dyes, 385 solvents, 386 light intensity and frequency, 387 presence of oxygen, 388,389 metallic ions, 390,391 enzymes and other substances. 381 For the use of anthocyanins as dyes in DSSCs, the aforementioned structural variations are critical in the choice of the natural sensitizer characterized by the most favourable structural and optical properties (e.g., maximum absorptionl max , e, colour stability).…”

Section: Anthocyaninsmentioning

confidence: 99%

Vegetable-based dye-sensitized solar cells

et al. 2015

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There is currently a large effort to improve the performance of low cost renewable energy devices. Dye-sensitized solar cells (DSSCs) are emerging as one of the most promising low cost photovoltaic technologies, addressing "secure, clean and efficient solar energy conversion". Vegetable dyes, extracted from algae, flowers, fruit and leaves, can be used as sensitizers in DSSCs. Thus far, anthocyanin and betalain extracts together with selected chlorophyll derivatives are the most successful vegetable sensitizers. This review analyses recent progress in the exploitation of vegetable dyes for solar energy conversion and compares them to the properties of synthetic dyes. We provide an in-depth discussion on the main limitation of cell performance e.g. dye degradation, effective electron injection from the dye into the conduction band of semiconducting nanoparticles, such as titanium dioxide and zinc oxide, outlining future developments for the use of vegetable sensitizers in DSSCs. We also discuss the cost of vegetable dyes and how their versatility can boost the advancement of new power management solutions, especially for their integration in living environments, making the practical application of such systems economically viable. Finally, we present our view on future prospects in the development of synthetic analogues of vegetable dyes as sensitizers in DSSCs.

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Section: Anthocyaninsmentioning

confidence: 99%

Vegetable-based dye-sensitized solar cells

et al. 2015

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“…Ме тод ін дук ції флуо рес цен ції хло ро фі лу (ФХ) є пер спек тив ним у мо ні то рин гу дов кіл ля, ос кільки вив чен ня кі не ти ки флуо рес цен ції може на да ти свід чен ня про ха рак тер ак тив ності зо внішньо го сере до ви ща і вплив його на па ра мет ри фо то син те зу. Цю ін фор ма цію мож на ви ко риста ти для еко ло гічно го мо ні то рин гу та оцін ки стій кості фо то син тезую чих ор га ніз мів (Lysenko et al, 2013).…”

Section: вступunclassified

“…ПОЛІЩУК, 2017 який вхо дить до скла ду ор га ніз му, знач но ниж ча ніж флуо рес цен ція роз чи ну хло ро фі лу від по відної кон цен тра ції. В по даль шо му ці спос те ре жен ня ста ли ос но вою в ро зу мін ні яви ща фо то хі міч но го га сін ня флуо рес цен ції, коли збу дже на мо ле ку ла, пе ре хо дя чи до ос нов но го, не збу дже но го, ста ну, від дає час ти ну сво єї енер гії для здій снен ня фо тосин те тич них про це сів (Lysenko et al, 2013).…”

Section: вступunclassified

Untitled

2017

Ukr.Bot.J.

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“…In a similar vein, we did not observe any direct effects of floral tissue damage due to the robber hole or nectar removal on female plant reproduction. These effects may only be common in cases where (1) the robber damages floral parts that can photosynthesize (Lysenko & Varduny 2013) and that fixed carbon makes up an important component of the plant's total carbon budget (Galen, Dawson & Stanton 1993), (2) robbing damages sexual organs of the flowers while robbing (McDade & Kinsman 1980;Galen 1983), or (3) subsequent nectar production by robbed flowers exacts a fitness cost to the plant. Carbohydrate costs to producing nectar can be extreme in some cases (Southwick 1984;Pyke 1991;Ordano & Ornelas 2005); in these systems, repeated nectar removal by robbers may exact severe fitness consequences for the plant.…”

Section: I R E C T E F F E C T S O F N E C T a R R O B B I N Gmentioning

confidence: 99%

Quantifying direct vs. indirect effects of nectar robbers on male and female components of plant fitness

2015

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Summary Plants interact simultaneously with both mutualists and antagonists. While webs of plant–animal interactions in natural systems can be highly complex, most interactions can be simplified into those that are either direct (mediated through pairwise interactions) or indirect (mediated through third‐party species). Mechanistic studies of the direct and indirect pathways by which foliar herbivores affect plants have been well explored; however, mechanistic explorations of how floral herbivores, such as nectar robbers, affect total plant fitness via direct vs. indirect pathways have received less attention. The goal of this study was to assess the importance of direct vs. pollinator‐mediated indirect effects of a floral antagonist on female and male components of plant fitness. We focused on the hummingbird‐pollinated plant scarlet gilia, Ipomopsis aggregata, which is nectar‐robbed by the bumblebee Bombus occidentalis. Prior studies have found evidence for pollinator‐mediated indirect effects of robbing on female and male components of I. aggregata fitness, but the mechanisms by which these indirect effects occur, and experimental evidence supporting or refuting direct effects of robbing, have been lacking. We found no evidence for direct effects of robbing on plant fitness. Robbers did not act as pollinators of I. aggregata nor did they directly affect seed production by making nectar‐robber holes or removing nectar in hand‐pollinated flowers. Moreover, robbing had no direct effect on pollen production per flower or the ability of pollen from robbed flowers to sire seeds in hand pollinations. However, nectar robbing had indirect effects on plant reproduction mediated through per‐visit pollinator effectiveness at depositing pollen in robbed vs. unrobbed flowers. A simple model of a plant‐robber‐pollinator system suggested that robbing effects in general may occur through more indirect mechanisms when nectar removal by robbers is high relative to nectar replenishment, and that compensation for robbing is then more profitable through the production of additional flowers. Synthesis. Our results highlight the importance of indirect effects in mediating the fitness consequences of species interactions.

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Anthocyanin-dependent anoxygenic photosynthesis in coloured flower petals?

Cited by 13 publications

References 30 publications

Vegetable-based dye-sensitized solar cells

Vegetable-based dye-sensitized solar cells

Untitled

Quantifying direct vs. indirect effects of nectar robbers on male and female components of plant fitness

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