Stem and leaf anatomy of Plectranthus neochilus Schltr., Lamiaceae

Duarte, Márcia do Rocio; Lopes, Juliano Ferreira

doi:10.1590/s0102-695x2007000400013

Cited by 45 publications

(45 citation statements)

References 36 publications

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“…Possui folhas pequenas, quase triangulares, dispostas compactamente, levemente amargas e de odor forte, principalmente quando está florida (Lorenzi & Matos, 2002). É usada popularmente para o tratamento de insuficiência hepática e dispepsia (Duarte & Lopes, 2007). Informações sobre produtividade vegetal, teor, rendimento e composição química do óleo essencial dessa espécie são incipientes na literatura.…”

Section: Introductionunclassified

Produção vegetal e de óleo essencial de boldo pequeno em função de fontes de adubos orgânicos

Rosal

Pinto²,

Bertolucci³

et al. 2011

Rev. Ceres

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Effect of organic fertilizer sources on biomass and essential oil production of Plectranthus neochilus SchlechterApplication of organic fertilizers to medicinal aromatic plants usually has a positive effect on biomass and essential oil production. Plectranthus neochilus Schlechter was cultivated with three organic fertilizer sources. This study evaluated the biomass production and content, yield and chemical composition of the essential oil. The seedlings, after acclimatization, were transplanted to 10L pots and placed under a protected environment. The experiment consisted of four treatments and four replications, with five pots per plot. The treatments included: without organic fertilizer (control); cattle manure 60 t ha -1 ; chicken manure 30 t ha -1 ; and organic compost 60 t ha -1 . Plants were harvested at 120 days after planting. Part of the fresh leaves was used for the essential oil extraction and the remaining material was A aplicação de fertilizantes orgânicos, em plantas medicinais e aromáticas, normalmente modifica positivamente a produção vegetal e de óleo essencial. Neste contexto, tendo por fim avaliar a resposta de plantas de Plectranthus neochilus Schltr., cultivadas com diferentes fontes de adubos orgânicos, o presente trabalho estudou a produção de biomassa, teor, rendimento e composição química do óleo essencial. As mudas, após a aclimatização, foram transplantadas para vasos de dez litros, acondicionados em casa de vegetação. O experimento foi constituído por quatro tratamentos e quatro repetições (16 parcelas), sendo cada parcela composta por cinco vasos. Os tratamentos foram: ausência de adubo orgânico (testemunha); aplicação de 60 t ha -1 de esterco bovino; 30 t ha -1 de esterco avícola; 60 t ha -1 de composto orgânico. Aos 120 dias de cultivo, as plantas foram colhidas e uma parte das folhas frescas foi destinada à extração do óleo essencial. O restante do material vegetal foi seco em estufa, até atingir peso constante, para a determinação da biomassa seca. As análises químicas do óleo foram realizadas por cromatografia gasosa (CG-DIC e CG-EM). As fontes de adubo orgânico testadas promoveram diferenças entre os tratamentos em relação à produção de biomassa, rendimento e composição do óleo essencial de P. neochilus. A utilização de diferentes fertilizantes orgânicos não modificou o teor de óleo volátil. Palavras-chave:Plectranthus neochilus Schltr., fertilizante orgânico, produção de biomassa, óleo volátil. 671Produção vegetal e de óleo essencial de boldo pequeno em função de fontes de adubos...Rev. Ceres, Viçosa, v. 58, n.5, p. 670-678, set/out, 2011 oven-dried for dry mass determination. The oil composition was determined by gas chromatography-mass spectrometry (CG-MS). The organic fertilizer sources showed differences between treatments related to biomass production, biomass distribution, essential oil yield and chemical composition in Plectranthus neochilus. The use of different organic ferilizers did not change the content of volatile oil.

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Section: Introductionunclassified

Produção vegetal e de óleo essencial de boldo pequeno em função de fontes de adubos orgânicos

Rosal

Pinto²,

Bertolucci³

et al. 2011

Rev. Ceres

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“…The presence of peltate and capitate glandular trichomes is a common feature to Lamiaceae species Ascensão et al 1999), and has been reported to species from different genera (Ascensão et al 1995;Corsi & Bottega 1999;Rodrigues et al 2006;Duarte & Lopes 2007;Gonçalves et al 2010). As a rule, peltate trichomes present short stalk and a large secretory head, while in the capitate trichomes the stalk is more than half of the height of the head (Abu-Asab & Cantino 1987;Ascensão & Pais 1998;Werker 2000).…”

Section: Discussionmentioning

confidence: 95%

Morphology and histochemistry of glandular trichomes in Hyptis villosa Pohl ex Benth. (Lamiaceae) and differential labeling of cytoskeletal elements

Tozin

Rodrigues

2016

Acta Bot. Bras.

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Lamiaceae contains many species known for their aromatic properties that are produced by the production of essential oils in glandular trichomes. Hyptis is one of the most common genera of Lamiaceae in the Brazilian fl ora, and includes several species with medicinal value. However, studies on the morphology and functioning of their glandular trichomes are lacking. We analyzed the morphology, histochemistry and ultrastructure of the glandular trichomes in leaves of H. villosa, emphasizing the diff erential distribution of actin fi laments and microtubules in cells secreting hydrophilic and lipophilic compounds. Four morphotypes of glandular trichomes were identifi ed. Total lipid, terpenes, alkaloids, phenolic compounds, proteins and polysaccharides were histochemically detected in all morphotyes. Th is evidences the mixed nature of the secretions of this species, although there are diff erences in the prevalence of lipophilic and hydrophilic components among the glandular morphotypes and among the cells of the same trichome. Th e actin microfi laments are more abundant in cells that secrete mainly hydrophilic compounds, and microtubules predominate in cells that secrete lipophilic compounds. Our results corroborate the correlation between the glandular morphotype and the composition of the secretion produced, with a diff erential distribution of the cytoskeletal elements according to the prevalence of either hydrophilic or lipophilic substances.

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“…However, the studied species was not mentioned. Duarte and Lopes (2007) reported a morphological study of Plectranthus neochilus aiming at the correct differentiation between various species of the genus Plectranthus and other genus commonly called "boldo", all used in folk medicine to treat diseases of the digestive tract. The brine shrimp lethality induced by Plectranthus neochilus ethanol extract provides an indication of antitumor activity for this species, still not reported in literature, and seems to be associated with antitumor and larvicide activities for other species of the genus Plectranthus (Gurgel et al, 2009;Tadesse et al, 2009).…”

Section: Discussionmentioning

confidence: 99%

Bioactivity evaluation against Artemia salina Leach of medicinal plants used in Brazilian Northeastern folk medicine

et al. 2012

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The brine shrimp (Artemia salina Leach) lethality bioassay offers an advantage in standardization and quality control of botanical products. This test is well correlated with antitumor activity (cytotoxicity) and can be used to monitor the activity of bioactive natural products. This paper reports the bioactivity of ethanol extracts from seven medicinal plants from the Northeast of Brazil (Acmella uliginosa, Ageratum conyzoides, Eugenia uniflora, Plectranthus neochilus, Moringa oleifera, Justicia pectoralis and Equisetum sp.) against Artemia salina. Biological activity was evaluated for extracts at 1, 10, 100, and 1000 µg/mL in triplicate, and the mean lethal concentration values (LC 50 ) were obtained by probit analysis. The species Acmella uliginosa showed the highest bioactivity, and its flower extract was more active than its leaf extract. Keywords

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Stem and leaf anatomy of Plectranthus neochilus Schltr., Lamiaceae

Cited by 45 publications

References 36 publications

Produção vegetal e de óleo essencial de boldo pequeno em função de fontes de adubos orgânicos

Produção vegetal e de óleo essencial de boldo pequeno em função de fontes de adubos orgânicos

Morphology and histochemistry of glandular trichomes in Hyptis villosa Pohl ex Benth. (Lamiaceae) and differential labeling of cytoskeletal elements

Bioactivity evaluation against Artemia salina Leach of medicinal plants used in Brazilian Northeastern folk medicine

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