UV-B protective effect of a polyacylated anthocyanin, HBA, in flower petals of the blue morning glory, Ipomoea tricolor cv. Heavenly Blue

Mori, Masayuki; Yoshida, Kumi; Ishigaki, Yasuhito; Matsunaga, Tsukasa; Nikaido, Osamu; Kameda, Kiyoshi; Kondo, Tadao

doi:10.1016/j.bmc.2005.01.011

Cited by 35 publications

(15 citation statements)

References 37 publications

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“…Examples include protecting against desiccation, cold, drought, herbivory or UV damage (Ben-Tal and King 1997;ChalkerScott 1999;Chittka et al 2001;Fineblum and Rausher 1997;Mori et al 2005;Warren and Mackenzie 2001), and to other challenges such as herbivory (Johnson et al 2008), all factors which are likely to differ in importance at different elevations. Similarly, the increase in ultraviolet at high elevations can be damaging to some plant cells, and it has been found that floral pigments such as anthocyanins (usually conferring a blue or red colouration) may also confer protection against UV damage (Mori et al 2005). It is therefore conceivable that in some cases the pigments favoured by physical factors conflict with those that pollinators may favour, resulting in an overall observation that colour frequencies at different altitudes do not differ, in spite of various selection pressures favouring particular colours in particular circumstances.…”

Section: Discussionmentioning

confidence: 98%

Flower colours along an alpine altitude gradient, seen through the eyes of fly and bee pollinators

Arnold

Savolainen

Chittka

2009

Arthropod-Plant Interactions

124

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Alpine flowers face multiple challenges in terms of abiotic and biotic factors, some of which may result in selection for certain colours at increasing altitude, in particular the changing pollinator species composition, which tends to move from bee-dominated at lower elevations to fly-dominated in high-alpine regions. To evaluate whether growing at altitude-and the associated change in the dominant pollinator groups present-has an effect on the colour of flowers, we analysed data collected from the Dovrefjell National Park in Norway. Unlike previous studies, however, we considered the flower colours according to ecologically relevant models of bee and fly colour vision and also their physical spectral properties independently of any colour vision system, rather than merely looking at human colour categories. The shift from bee to fly pollination with elevation might, according to the pollination syndrome hypothesis, lead to the prediction that flower colours should shift from more bee-blue and UVblue flowers (blue/violet to humans, i.e. colours traditionally associated with large bee pollinators) at low elevations to more bee-blue-green and green (yellow and white to humans-colours often linked to fly pollination) flowers at higher altitude. However, although there was a slight increase in bee-blue-green flowers and a decrease in beeblue flowers with increasing elevation, there were no statistically significant effects of altitude on flower colour as seen either by bees or by flies. Although flower colour is known to be constrained by evolutionary history, in this sample we also did not find evidence that phylogeny and elevation interact to determine flower colours in alpine areas.

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Section: Discussionmentioning

confidence: 98%

Flower colours along an alpine altitude gradient, seen through the eyes of fly and bee pollinators

Arnold

Savolainen

Chittka

2009

Arthropod-Plant Interactions

124

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“…Flavonoids are very abundant 15C secondary metabolites in plants, containing two aromatic rings (connected by a heterocycle pyrone ring), which are tailored with diverse hydroxyl moieties. Some are produced at chloroplasts as defense against oxidative damage generated during photosynthesis [ 1 ]; others are produced at the sexual organs as defense against solar UV [ 2 ], at the root area as attractants for bacterial and fungal symbionts [ 3 ], or as defense against virus, bacteria, fungi, and herbivores [ 4 ].…”

Section: Bioavailability Of Dietary Polyphenolsmentioning

confidence: 99%

Bioavailability of Dietary Polyphenols and Gut Microbiota Metabolism: Antimicrobial Properties

Marín

Miguélez

Villar

et al. 2015

BioMed Research International

613

502

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Polyphenolic compounds are plant nutraceuticals showing a huge structural diversity, including chlorogenic acids, hydrolyzable tannins, and flavonoids (flavonols, flavanones, flavan-3-ols, anthocyanidins, isoflavones, and flavones). Most of them occur as glycosylated derivatives in plants and foods. In order to become bioactive at human body, these polyphenols must undergo diverse intestinal transformations, due to the action of digestive enzymes, but also by the action of microbiota metabolism. After elimination of sugar tailoring (generating the corresponding aglycons) and diverse hydroxyl moieties, as well as further backbone reorganizations, the final absorbed compounds enter the portal vein circulation towards liver (where other enzymatic transformations take place) and from there to other organs, including behind the digestive tract or via blood towards urine excretion. During this transit along diverse tissues and organs, they are able to carry out strong antiviral, antibacterial, and antiparasitic activities. This paper revises and discusses these antimicrobial activities of dietary polyphenols and their relevance for human health, shedding light on the importance of polyphenols structure recognition by specific enzymes produced by intestinal microbial taxa.

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“…From this species were also isolated peonidins (Saito et al, 2005) and the anthocyans HBA (56) that presents protective effects against UV-B ( Mori et al, 2005). A spermidine alkaloid, N1, N10-ditigloylspermidine were isolated from the seeds of I. nil (Schimming et al, 2005b).…”

Section: Ipomoea Nil (L) Rothmentioning

confidence: 99%

Review of the genus Ipomoea: traditional uses, chemistry and biological activities

Meira¹,

Silva²,

David³

et al. 2012

Rev. bras. farmacogn.

156

120

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Approximately 600-700 species of Ipomoea, Convolvulaceae, are found throughout tropical and subtropical regions of the world. Several of those species have been used as ornamental plants, food, medicines or in religious ritual. The present work reviews the traditional uses, chemistry and biological activities of Ipomoea species and illustrates the potential of the genus as a source of therapeutic agents. These species are used in different parts of the world for the treatment of several diseases, such as, diabetes, hypertension, dysentery, constipation, fatigue, arthritis, rheumatism, hydrocephaly, meningitis, kidney ailments and infl ammations. Some of these species showed antimicrobial, analgesic, spasmolitic, spasmogenic, hypoglycemic, hypotensive, anticoagulant, anti-infl ammatory, psychotomimetic and anticancer activities. Alkaloids, phenolics compounds and glycolipids are the most common biologically active constituents from these plant extracts.

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UV-B protective effect of a polyacylated anthocyanin, HBA, in flower petals of the blue morning glory, Ipomoea tricolor cv. Heavenly Blue

Cited by 35 publications

References 37 publications

Flower colours along an alpine altitude gradient, seen through the eyes of fly and bee pollinators

Flower colours along an alpine altitude gradient, seen through the eyes of fly and bee pollinators

Bioavailability of Dietary Polyphenols and Gut Microbiota Metabolism: Antimicrobial Properties

Review of the genus Ipomoea: traditional uses, chemistry and biological activities

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