Flavonoid glycosides in the petals of some Rhododendron species and hybrids

Loose, R. De

doi:10.1016/s0031-9422(00)85196-1

Cited by 28 publications

(8 citation statements)

References 10 publications

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“…In evergreen azalea flowers, the anthocyanins detected with thin‐layer chromatography were cyanidin, peonidin and malvidin glycosides (Asen & Budin ; De Loose ), while delphinidin and petunidin were detected using HPLC analysis (Mizuta et al . ).…”

Section: Discussionmentioning

confidence: 99%

“…So far, studies on rhododendron floral colouration have mainly focused on evergreen azalea, mostly in the subgenus Tsutsusi . The flavonoid pigments contributing to petal colouration in azalea cultivars have been investigated previously using thin‐layer chromatography, and include the anthocyanins cyanidin 3‐ O ‐galactoside, cyanidin 3‐ O ‐glucoside, cyanidin 3‐ O ‐arabinoside, cyanidin 3,5‐di‐ O ‐glucoside, cyanidin 3‐ O ‐arabinoside‐5‐ O ‐glucoside, peonidin 3,5‐di‐ O ‐glucoside and malvidin 3,5‐di‐ O ‐glucoside, and the flavonols azaleatin, quercetin, myricetin and their glycoside derivatives (arabinose, galactoside and glucose; Harborne ; Asen & Budin ; De Loose , ; Asen et al . ).…”

Section: Introductionmentioning

confidence: 99%

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Characterisation of flower colouration in 30 Rhododendron species via anthocyanin and flavonol identification and quantitative traits

Lai

Wang

et al. 2017

Plant Biol J

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Floral colour is a key reproductive character, often associated with environmental adaptation, and subject to human intervention. A large number of Rhododendron species differ widely in flower colour, providing a good model for flower colouration. The chromatic features and anthocyanin compositions of 30 species from seven subgenera were systematically analysed. The Royal Horticultural Society Colour Chart and CIE L*a*b* system were employed to describe and investigate flower colours. The UPLC-PDA/ESI-MS system was used to identify and quantify anthocyanins in petal extracts. The flower colours of 30 Rhododendron species were categorised into four groups - red, purplish pink, purple and white. Seven anthocyanins were identified and quantified in petals: delphinidin, cyanidin and malvidin 3-O-arabinoside-5-O-glucosides, cyanidin 3,5-di-O-glucoside, 3-O-galactoside and 3-O-arabinoside, and delphinidin 3-O-glucoside. The red-flowered species mainly contained cyanidin monoglycosides and had much higher total anthocyanin content than purplish pink- and purple-flowered species. Purplish pink- and purple-flowered species had similar anthocyanin types and content. The chromatic differences were significant among groups, except the purplish pink and purple groups. Statistical analysis showed that Cy3Gal and Cy3Arb are characteristic for red-flowered species, and Mv3Arb5G and Dp3Arb5G play important roles in purple colouration; their contents were major components that greatly affected the chromatic parameters. In total, 21 flavonol derivates were identified. However, total flavonol content and co-pigmentation index showed no significant difference or correlation among/with colour groups, suggesting that flavonols might not play a major role in colouration. These results enhance our knowledge of the biochemical basis of flower colouration in Rhododendron species, and provide a foundation for genetic variation studies and aid in breeding cultivars with novel flower colours.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Characterisation of flower colouration in 30 Rhododendron species via anthocyanin and flavonol identification and quantitative traits

Lai

Wang

et al. 2017

Plant Biol J

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“…Identification of 1-13 and 16-19 Compounds 1-13 and 16-19 were identified as 5,7-dihydroxycoumarin (1), 5) trans-feruloyltyramine (2), 6) gallic acid (3), 7) b-glucogallin (4), 7) trifolin (5), 8) hyperin (6), 9,10) myricetin 3-O-b-D-galactopyranoside (7), 11,12) myricitrin (8), 11) resveratorol (9), 13) astringenin (10), 14) piceid (11), 15) astringin (12), 16) resveratorol 3-O-b-D-(6-Ogalloyl)glucopyranoside (13), 17,18) (Ϫ)-epigallocatechin 3-O-gallate (16), 19) catechin (4a→8)-epigallocatechin 3-O-gallate (17), 19) epicatechin 3-O-gallate-(4b→8)-epigallocatechin 3-O-gallate (18), 19) and idaein (19), 20) respectively, by direct comparison (UV, IR, and 1 H-and 13 C-NMR spectra) with authentic samples (3, 5, 6, 8, 16) or of respective spectral and chemical data with those described in the literature (1, 2, 4, 7, 9-13, 17-19). Vol.…”

Section: Methodsmentioning

confidence: 99%

Studies on Nepalese Crude Drugs. XXVIII. Chemical Constituents of Bhote Khair, the Underground Parts of Eskemukerjea megacarpum HARA

Miyaichi

Nunomura

Kawata

et al. 2006

CHEMICAL & PHARMACEUTICAL BULLETIN

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“…В листьях представителей рода Rhododendron госсипетин был обнаружен только в форме 3-О-галактозида (De Loose, 1970;Harborne, Williams, 1971). Отсутствие современных данных по идентификации производных госсипетина Рис.…”

Section: таблица 2 размеры особей и листовых пластинок Rhododendron Punclassified

Ecological and geographical variation of morphometric parameters and flavonoid composition of Rhododendron parvifolium

2018

turczaninowia

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Ключевые слова: кластерный анализ, морфометрия, популяции, флавоноиды, Rhododendron parvifolium.Аннотация. Rhododendron parvifolium обладает обширным ареалом в Восточной Сибири и Дальнем Вос-токе России, включая остров Сахалин. Значительный полиморфизм морфологических и химических призна-ков вида слабо изучен. Нами проведено изучение морфологических показателей и состава флавоноидов в образцах растений из четырех популяций этого вида, в том числе растений из популяции, расположенной в Иркутской области (г. Слюдянка), отличающейся от остальных значительной высотой растений и размерами листьев. Климат в месте ее произрастания был значительно более мягким по сравнению с местообитаниями остальных популяций. Определяли длину и ширину листовой пластинки, длину черешка, листовой индекс -отношение ширины к длине листа. В результате кластерного анализа морфометрических данных выявлено обособление популяции из Иркутской области от остальных, образующих единый кластер. Методом высоко-эффективной жидкостной хроматографии в гидролизатах образцов удалось идентифицировать пять агликонов (дигидрокверцетин, мирицетин, кверцетин, лютеолин и кемпферол), главными из которых были кверцетин и ди-гидрокверцетин. Методом высокоэффективной жидкостной хроматографии-масс-спектрометрии в нативных экстрактах всех образцов идентифицированы гиперозид, авикулярин, а также пентозиды дигидрокверцетина и кверцетина, дезоксигексозид дигидрокверцетина, кверцетин и кемпферол в свободном виде. Основными гликозидными компонентами во всех образцах были пентозид дигидрокверцетина и гиперозид. Кластерный анализ данных по составу флавоноидов показал наличие двух кластеров, характеризующихся различными эдафическими условиями. Популяции, произрастающие на гольцах, отличались от растущих на болотах по-вышенным содержанием флавоноидов, в том числе гликозидов дигидрокверцетина, мирицетина, кверцетина, а также свободных агликонов.

show abstract

Flavonoid glycosides in the petals of some Rhododendron species and hybrids

Cited by 28 publications

References 10 publications

Characterisation of flower colouration in 30 Rhododendron species via anthocyanin and flavonol identification and quantitative traits

Characterisation of flower colouration in 30 Rhododendron species via anthocyanin and flavonol identification and quantitative traits

Studies on Nepalese Crude Drugs. XXVIII. Chemical Constituents of Bhote Khair, the Underground Parts of Eskemukerjea megacarpum HARA

Ecological and geographical variation of morphometric parameters and flavonoid composition of Rhododendron parvifolium

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