Estudo farmacognóstico do caule e raízes de Microgramma squamulosa (Kaulf.) Sota (Polypodiaceae)

Suffredini, Ivana Barbosa; Bacchi, Elfriede Marianne; Kraus, Jane Elizabeth

doi:10.1590/s0102-695x2008000200023

Cited by 8 publications

(8 citation statements)

References 18 publications

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“…The sclerified layer of M. squamulosa surrounding the cells of the vascular bundle was also seen in the rhizome of this species by Suffredini et al (2008). The species also has phenolic compounds (Jaime et al 2007), which are responsible for the brownish color of the support tissues and parenchymal cells close to the vascular bundle (Ogura 1972), as found in this study.…”

Section: Discussionsupporting

confidence: 75%

“…de la Sota is an epiphytic fern occurring in Peru, Bolivia, Brazil, Argentina, Paraguay and Uruguay (Tryon & Stolze 1993), both in human-modified environments (Gonçalves & Waechter 2003) and in natural forests (Kersten & Silva 2002). This species presents a long rhizome from which arise the petioles of the fertile and sterile leaves, which are dimorphic (Sehnem 1970, Jaime et al 2007, Suffredini et al 2008. Hirsch & Kaplan (1974) studied the organography and development of the shoot systems of M. squamulosa and M. vacciniifolia (Langsd.…”

mentioning

confidence: 99%

“…Jaime et al (2007) described the diagnostic characteristics of M. squamulosa to contribute to its taxonomic identification and to the control of the quality of secondary metabolites with medicinal properties. Stem and root morphology and anatomy of M. squamulosa have been characterized in the pharmacognostic study conducted by Suffredini et al (2008). However, these studies did not analyze the structural differences between dimorphic leaves.…”

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confidence: 99%

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Leaf dimorphism of Microgramma squamulosa (Polypodiaceae): a qualitative and quantitative analysis focusing on adaptations to epiphytism

Rocha

Droste

Gehlen

et al. 2013

RBT

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Abstract:The epiphytic fern Microgramma squamulosa occurs in the Neotropics and shows dimorphic sterile and fertile leaves. The present study aimed to describe and compare qualitatively and quantitatively macroscopic and microscopic structural characteristics of the dimorphic leaves of M. squamulosa, to point more precisely those characteristics which may contribute to epiphytic adaptations. In June 2009, six isolated host trees covered by M. squamulosa were selected close to the edge of a semi-deciduous seasonal forest fragment in the municipality of Novo Hamburgo, State of Rio Grande do Sul, Brazil. Macroscopic and microscopic analyzes were performed from 192 samples for each leaf type, and permanent and semi-permanent slides were prepared. Sections were observed under light microscopy using image capture software to produce illustrations and scales, as well as to perform quantitative analyses. Fertile and sterile leaves had no qualitative structural differences, being hypostomatous and presenting uniseriate epidermis, homogeneous chlorenchyma, amphicribal vascular bundle, and hypodermis. The presence of hypodermal tissue and the occurrence of stomata at the abaxial face are typical characteristics of xeromorphic leaves. Sterile leaves showed significantly larger areas (14.80cm 2 ), higher sclerophylly index (0.13g/cm 2 ) and higher stomatal density (27.75stomata/mm 2 ) than fertile leaves. The higher sclerophylly index and the higher stomatal density observed in sterile leaves are features that make these leaves more xeromorphic, enhancing their efficiency to deal with limited water availability in the epiphytic environment, compared to fertile leaves. Rev. Biol. Trop. 61 (1): 291-299. Epub 2013 March 01.

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Section: Discussionsupporting

confidence: 75%

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confidence: 99%

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confidence: 99%

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Leaf dimorphism of Microgramma squamulosa (Polypodiaceae): a qualitative and quantitative analysis focusing on adaptations to epiphytism

Rocha

Droste

Gehlen

et al. 2013

RBT

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“…One of the most common features mentioned in anatomical studies on ferns is their lignified schlerenchymatous sheath in the cortex [40][41][42][43][44][45][46], which only encloses the petiole vascular bundles in E. laminarioides. It is considered a specialized character found in specimens of most of the derived families, such as Dryopteridaceae [45].…”

Section: Discussionmentioning

confidence: 99%

Elaphoglossum (Dryopteridaceae-Fern) of Amazon Rainforest in Brazil: Anatomic Characterization and Adaptative Strategies

Feio¹,

Aguiar-Dias²,

Potiguara³

2013

AJPS

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This study describes the anatomy of sterile leaves of Elaphoglossum discolor (Kuhn) C. Chr., E. flaccidum (Fée) T. Moore and E. laminarioides (Bory ex Fée) T. Moore, the most representative species of the genus in the Ecological Park of Gunma in Pará State. It reports the main diagnostic characters and provides new systematic data for the group. In addition, it locates the production and accumulation sites of bioactive compounds to determine possible adaptive strategies of these species in the Amazon rainforest environment. Diagnostic structural features include stoma typology, central veins and margin forms, type of mesophyll, and the presence of schlerenchymatous sheaths in the cortex, among others. Among the bioactive compounds related to defense adaptation are phenolic compounds, which occur in all three species, and alkaloids and mucilage, which are exclusive to E. laminarioides. Of the three species studied, E. laminarioides has features that make it the best suited to the rainforest environment.

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“…A partir de uma análise histoquímica com vermelho de Rutênio constatou presença mucilaginosa na camada subepidérmica da folha. O pecíolo tem sua área lisa, presença limitada de escamas, o que evidencia epiderme uniestratificada, e sua parede externa é periclinal densa, em sua porção proximal, mediana possui dois meristelos, já na porção distal ainda com dois meristelos com diferença que eles se unem no xilema em um molde de "V", ao longo do pecíolo ainda se encontra células parenquimáticas e conteúdo fenólico (FERRARI, 2009;LEHN;ARANA, 2020;SUFFREDINI;BACCHI;KRAUS, 2008).…”

Section: Aspectos Botânicos Do Gênerounclassified

Aspectos biológicos e terapêuticos do gênero Microgramma, família Polypodiaceae

Santos¹,

Maciel

Silva³

et al. 2020

BJD

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Introdução: O gênero Microgramma pertence à família Polypodiaceae, possuindo plantas medicinais com propriedades farmacológicas, em destaque temos a Microgramma vacciniifolia e a Microrgamma Squamulosa, sendo essas a mais estudadas. Segundo conhecimento empírico o gênero Microgramma possui ação antimicrobiana, antioxidante, é eficaz contra infecções, auxilia em enfermidades renais, entre outros. Entretanto, há a necessidade de verificar e comprovar suas atividades biológicas com estudos fitoquímicos e toxicológicos, considerando a falta de estudos entre as plantas deste gênero. Objetivo: Verificar na literatura os conhecimentos técnicos científicos, como aspectos biológicos, fitoquímicos e terapêuticos acerca deste gênero. Metodologia: Por meio de plataformas digitais através de artigos e monografias, que foram direcionadas para o interesse desta revisão, foi analisado a parti das plantas medicinais deste gênero, pertencente à família Polypodiaceae, filtrando seus conhecimentos sobre toxicidade e fitoquímicos, assim como atividade biológicos e aspectos botânicos. Resultados: As espécies Microgramma vacciniifolia e Microgramma squamulosa se destacaram entre as do gênero, exibindo estudos sobre a sua fitoquímica e toxicológicos relevantes, a Microgramma geminata apresentou estudos iniciais da sua fitoquímica. Conclusão: Sendo insatisfatório os atuais estudos realizados para as plantas deste gênero, diante da riqueza de fitoquímicos que elas possuem, são necessárias mais pesquisas de eficácia e segurança, buscando maior contribuição para o meio acadêmico e sociedade.

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Estudo farmacognóstico do caule e raízes de Microgramma squamulosa (Kaulf.) Sota (Polypodiaceae)

Cited by 8 publications

References 18 publications

Leaf dimorphism of <i>Microgramma squamulosa</i> (Polypodiaceae): a qualitative and quantitative analysis focusing on adaptations to epiphytism

Leaf dimorphism of <i>Microgramma squamulosa</i> (Polypodiaceae): a qualitative and quantitative analysis focusing on adaptations to epiphytism

<i>Elaphoglossum</i> (Dryopteridaceae-Fern) of Amazon Rainforest in Brazil: Anatomic Characterization and Adaptative Strategies

Aspectos biológicos e terapêuticos do gênero Microgramma, família Polypodiaceae

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Estudo farmacognóstico do caule e raízes de Microgramma squamulosa (Kaulf.) Sota (Polypodiaceae)

Cited by 8 publications

References 18 publications

Leaf dimorphism of <i>Microgramma squamulosa</i> (Polypodiaceae): a qualitative and quantitative analysis focusing on adaptations to epiphytism

Leaf dimorphism of <i>Microgramma squamulosa</i> (Polypodiaceae): a qualitative and quantitative analysis focusing on adaptations to epiphytism

&lt;i&gt;Elaphoglossum&lt;/i&gt; (Dryopteridaceae-Fern) of Amazon Rainforest in Brazil: Anatomic Characterization and Adaptative Strategies

Aspectos biológicos e terapêuticos do gênero Microgramma, família Polypodiaceae

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<i>Elaphoglossum</i> (Dryopteridaceae-Fern) of Amazon Rainforest in Brazil: Anatomic Characterization and Adaptative Strategies