Chemotaxonomy of Hypericum genus from Portugal: Geographical distribution and essential oils composition of Hypericum perfoliatum, Hypericum humifusum, Hypericum linarifolium and Hypericum pulchrum

Nogueira, Teresa; Marcelo‐Curto, M. J.; Figueiredo, A. Cristina; Barroso, José G.; Pedro, Luís G.; Rubiolo, Patrizia; Bicchi, Carlo

doi:10.1016/j.bse.2007.07.004

Cited by 52 publications

(37 citation statements)

References 7 publications

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“…These authors also mentioned that in this genus the stomata are usually confined to the lower surface, commonly surrounded by three or more cells and there are cases in which several types have been recorded in a single leaf, just like what we observed, with the exception of H. calycinum. Perrone et al [26] also refer that H. androsaemum is a hypostomatic species, displaying only anisocytic stomata, which is in disagreement with our observations. Some researchers consider that stomata index is useful in comparing leaves of different sizes and they agree that the leaf midlamina of the abaxial (Fig.…”

Section: Discussioncontrasting

confidence: 57%

“…1C), H. androsaemum and H. calycinum. Perrone et al, [26] mentioned that the cuticular ornamentations in H. androsaemum are scarce and barely detected, which is not in agreement with the one found in our samples. All species show stomata in the abaxial epidermis (Table 2): anomocytic and anisocytic in H. androsaemum (Fig.…”

Section: Discussioncontrasting

confidence: 56%

“…Reports on H. androsaemum phytochemistry and bioactivities are known [21; 23-24] and also on chemotaxonomy involving this and other Portuguese species [25] but little is known about their phytognostic characters. Maggi et al, [17] and Perrone et al [26] documented the morphology and histochemistry of Italian populations of H. androsaemum. These authors mentioned that there are some differences in size and shape of leaves and flowers, type and distribution of the secretory structures on the herb's parts.…”

Section: Introductionmentioning

confidence: 99%

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Leaf Phytognostic Characters of Six Species of Hypericum L. (Hypericaceae)

Teixeira¹

2017

Ra Journals

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Section: Discussioncontrasting

confidence: 57%

Section: Discussioncontrasting

confidence: 56%

Section: Introductionmentioning

confidence: 99%

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Leaf Phytognostic Characters of Six Species of Hypericum L. (Hypericaceae)

Teixeira¹

2017

Ra Journals

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“…The highest percentage of a-pinene was observed in H. scabrum, while the lowest percentage was obtained from H. perforatum (Table 1). Similarly, a-pinene is the major constituents in other Hypericum species (Baser et al, 2002;Couladis et al, 2001;Crockett et al, 2007;Javidnia et al, 2008;Nogueira et al, 2008;Yuce & Bagci, 2012). Akhbari et al (2012) reported that the content of a-pinene differs greatly between the essential oil extracted from flowers (70.2%) and fruit (25.4%) of both H. perforatum and H. scabrum growing wild in Iran.…”

Section: Chemical Compositionsmentioning

confidence: 99%

Chemical composition and bioactivity of essential oils ofHypericum helianthemoides. Hypericum perforatumandHypericum scabrum

Pirbalouti

Fatahi-Vanani

Craker

et al. 2013

Pharmaceutical Biology

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Context: A number Hypericum species are well known for their therapeutic efficacy and use in traditional medicine. The various species of Hypericum have been traditionally used for the treatment of wounds, eczema, burns, trauma, rheumatism, neuralgia, gastroenteritis, ulcers, hysteria, bedwetting and depression. Objective: This study evaluated the in vitro antioxidant, antibacterial and phytochemical properties of essential oils of Hypericum helianthemoides (Spach) Boiss., Hypericum perforatum L. and Hypericum scabrum L. (Hypericaceae) collected from alpine region of Southwest Iran. Materials and methods: The essential oils obtained from dried flowering aerial parts of three Hypericum species were analyzed by gas chromatography and gas chromatography/mass spectrometry to determine chemical compositions. The antibacterial activity of essential oils within concentration ranges from 16 to 500 mg/mL was individually evaluated against Bacillus cereus, Listeria monocytogenes, Proteus vulgaris and Salmonella typhimurium. The 1,1-diphenyl-2-picrilhydrazyl (DPPH) radical scavenging activity of essential oils was determined using DPPH assay. Results: Essential oil yield of H. helianthemoides, H. scabrum and H. perforatum were 0.12, 0.20 and 0.21 mL/100 g dried material, respectively. The major constituents of the essential oils were a-pinene (12.52-49.96%), b-pinene (6.34-9.70%), (E)-b-ocimene (4.44-12.54%), b-caryophyllene (1.19-5.67%), and germacrene-D (2.34-6.92%). The essential oils of three Hypericum species indicated moderate-to-good inhibitory activities against four bacteria, especially against L. monocytogenes. Discussion and conclusion: The essential oils of the three studied Hypericum species sourced in alpine region of West Iran were rich in monoterpene and sesquiterpenes hydrocarbons. Among the three tested species, the essential oil of H. scabrum showed the highest antibacterial and antioxidant activities.

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“…Even though no major differences were observed in essential oil compositions within each species, the range of dominant constituents supports the sectional separation of species. 17 To assess the use of essential oil constituents in identifying taxonomic relationships among species, multivariate analysis by principal components analysis (PCA) and nearest neighbor complete linkage cluster analysis were initially performed with oil constituent levels ≥ 0.5% (14 samples × 41 variables = 574 pieces of data). After the variable modeling which aimed to stabilize the hierarchical structure (final matrix, 14 × 28 = 392), the relative position of the PCA based taxa is shown in Figure 1 Therefore, two types of essential oils were identified.…”

Section: Resultsmentioning

confidence: 99%

Chemotaxonomic markers in essential oils of Hypenia (Mart. ex Benth.) R. Harley

Faria

Costa²,

Vilela³

et al. 2012

J. Braz. Chem. Soc.

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O Cerrado Central brasileiro é considerado o centro de origem e dispersão de Hypenia (Lamiaceae: subtribo Hyptidineae) na América do Sul. O gênero tem sido mantido sem divisão, ou subdividido em duas ou cinco seções taxonômicas, baseadas quase exclusivamente a partir de um conjunto limitado de características florais. Neste trabalho, uma delimitação química interespecífica é descrita a fim de complementar as análises das características botânicas. Análise multivariada dos óleos essenciais de dez espécies na fase vegetativa suporta a divisão taxonômica do gênero em duas seções. Grupo I incluiu quatro espécies da seção Laxiflorae em adição à H. irregularis, os quais foram caracterizados pelos mais altos percentuais de espatulenol e óxido de cariofileno. Grupo II conteve cinco espécies da seção Densiflorae com a-cadinol, a-muuroleno e a-muurolol como constituintes principais. Cadinanos e germacranos/aromadendranos parecem ser as classes marcadoras quimiotaxonômicas nas seções Densiflorae e Laxiflorae, respectivamente. Além disso, análise de redundância canônica não indicou correlação significante entre fatores edáficos com quimiovariação nos óleos essenciais, sugerindo que em Hypenia os óleos são constituídos por substâncias constitutivas e não induzidas pelo ambiente.Central Brazilian Cerrado is regarded as the center of origin and dispersion of Hypenia (Lamiaceae: subtribe Hyptidineae) in South America. The genus has either remained undivided or been divided into two or seven taxonomic sections, based almost exclusively on a limited range of floral features. Interspecific chemical delimitation to complement analyses of botanical traits is described. Multivariate analysis of essential oils of ten species in the vegetative stage supports the taxonomic division in two sections. Cluster I included four species belonging to section Laxiflorae in addition to H. irregularis, which were characterized by the highest percentages of spathulenol and caryophyllene oxide. Cluster II contained five species belonging to section Densiflorae with a-cadinol, a-muurolene and a-muurolol as major constituents. Cadinanes and germacranes/ aromadendranes seem to be chemotaxonomic markers of sections Densiflorae and Laxiflorae, respectively. Furthermore, redundancy analysis revealed no significant correlation between edaphic factors and oil chemovariations, suggesting that Hypenia oils consist of constitutive rather than induced compounds.

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Chemotaxonomy of Hypericum genus from Portugal: Geographical distribution and essential oils composition of Hypericum perfoliatum, Hypericum humifusum, Hypericum linarifolium and Hypericum pulchrum

Cited by 52 publications

References 7 publications

Leaf Phytognostic Characters of Six Species of Hypericum L. (Hypericaceae)

Leaf Phytognostic Characters of Six Species of Hypericum L. (Hypericaceae)

Chemical composition and bioactivity of essential oils ofHypericum helianthemoides. Hypericum perforatumandHypericum scabrum

Chemotaxonomic markers in essential oils of Hypenia (Mart. ex Benth.) R. Harley

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