Morfoanatomia dos órgãos vegetativos de Piper crassinervium H.B. &amp; K. (Piperaceae)

Albiero, Adriana Lenita Meyer; Paoli, Adelita Aparecida Sartori; Souza, Luiz Antônio de; Mourão, Káthia Socorro Mathias

doi:10.1590/s0102-33062005000200013

Cited by 23 publications

(40 citation statements)

References 11 publications

(6 reference statements)

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“…Another example can be described in a study carried out with P. aduncum, which has capitate glandular trichomes on both sides (Vianna & Akisue 1997), and in P. betle, in which only unicellular tector trichomes are found on the abaxial surface (Datta & Dasgupta 1980). Given that there are significant variations in the morphology of trichomes in Piper species, these data provide subsidies to differentiate them (Albiero et al 2005a).…”

Section: Resultsmentioning

confidence: 99%

Comparative anatomy of the leaves of Piper lepturum(Kunth) C.DC. var. lepturum and Piper lepturum var. angustifolium (C.DC.) Yunck.

Machado

Pereira

Santos

et al. 2015

Hoehnea

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-(Comparative anatomy of the leaves of Piper lepturum (Kunth) C.DC. var. lepturum and Piper lepturum var. angustifolium (C.DC.) Yunck.). This study showed anatomical differences related to Piper lepturum var. lepturum and P. lepturum var. angustifolium species, sometimes considered varieties and in other cases synonyms. For histological analysis, fully expanded leaves were collected and for analysis by scanning electron microscope (SEM), fragments from the midrib were fixed on both leaf surfaces. The two species revealed differences in plant anatomy and it was observed that the stem of P. lepturum var. lepturum showed persistent wings and papillary epidermal cells, and these characters are absent in P. lepturum var. angustifolium. There was also the presence of raphides only in the lamina leaf and petiole of P. lepturum var. angustifolium, differentiating the two species. Recent studies have shown the importance of plant anatomy with species where there are issues related to taxonomic delimitation.

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Section: Resultsmentioning

confidence: 99%

Comparative anatomy of the leaves of Piper lepturum(Kunth) C.DC. var. lepturum and Piper lepturum var. angustifolium (C.DC.) Yunck.

Machado

Pereira

Santos

et al. 2015

Hoehnea

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“…1a-i). Tais resultados assemelham-se ao que ocorre em outras espécies de Piper já descritas, (Metcalfe & Chalk 1965, 1979Souza et al 2004;Albiero et al 2005aAlbiero et al ,b, 2006Souza et al 2009). A ocorrência de uma ou mais camadas de parênquima paliçádico nas folhas está potencialmente relacionada com a intensidade luminosa que atinge as folhas (Smith et al 1997).…”

Section: Resultsunclassified

“…4b-c). Albiero et al (2006) destacam para P. hispidum a presença de dois feixes vasculares na região mediana do limbo, enquanto que em P. crassinervium foi observado apenas um feixe (Albiero et al 2005a). Em P. gaudichaudianum, Albiero et al (2005b) e Albiero et al (2006) registraram oito feixes vasculares na base da folha e um feixe vascular na região mediana e apical da folha.…”

Section: Resultsunclassified

Anatomia foliar comparativa de nove espécies do gênero Piper (Piperaceae)

et al. 2012

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ResumoAs espécies de Piper são de grande interesse medicinal. Porém apresentam considerável desafio taxonômico, provavelmente pelo diminuto tamanho das partes florais. Por isso a morfologia externa da folha tem sido muito utilizada para taxonomia do grupo. Entretanto, há poucos trabalhos anatômicos para o gênero. Neste estudo, as folhas de nove espécies foram comparadas anatomicamente: Piper aduncum Vell.; P. cernuum Vell.; P. dilatatum Rich; P. gaudichaudianum Kunth; P. glabratum Kunth; P. hispidinervum C. DC.; P. lindbergii C. DC.; P. solmsianum C. DC. e P. umbellatum Jacq. O objetivo era avaliar o potencial dos caracteres anatômicos para separação de espécies. A maioria das espécies estudadas tem a epiderme do limbo constituída por células retangulares e arredondadas. Camadas subepidérmicas ocorrem em ambas às faces do limbo, exceto em P. aduncum, P. cernuum e P. hispidinervum. Todas as espécies são hipoestomáticas, exceto P. hispidinervum. O mesofilo é dorsiventral na maioria das espécies, enquanto em P. solmsianum e P. umbellatum o mesofilo é homogêneo. O número de camadas dos tecidos paliçádico e esponjoso é variável. Também ocorrem variações no número e no tamanho dos feixes vasculares. Em geral, ocorrem células secretoras, idioblastos, tricomas tectores e glandulares, lipídios, compostos fenólicos e amido. A análise de agrupamento identificou três grupos distintos entre as espécies, com base nas características anatômicas estudadas. Palavras-chave: anatomia, folha, Piperaceae, Piper. AbstractThe species of Piper are of great medical interest. They, however, represent considerable taxonomic challenge, probably due to the small size of floral parts. Therefore, the external morphology of the leaf has been used as diagnostic features in the taxonomy of the group. However, there are few anatomical studies on species of this genus. In this study, the leaves of nine species were compared anatomically: Piper aduncum Vell., P. cernuum Vell., P. dilatatum Rich, P. gaudichaudianum Kunth, P. glabratum Kunth, P. hispidinervum C. DC., P. lindbergii C. DC., P. solmsianum C. DC. and P. umbellatum Jacq. The objective was to evaluate the potential of anatomical characters for species separation. Most species studied have the epidermis of the lamina consists of rectangular and rounded cells. Subepidermal layers occur on both sides of the lamina, except in P. aduncum, P. cernuum and P. hispidinervum. All species are hypostomatic, except P.hispidinervum. The mesophyll is dorsiventral in most species, while in P. solmsianum and P. umbellatum, the mesophyll is homogeneous. The number of layers of palisade and spongy tissue is variable. Also there are variations in the number and size of vascular bundles. In general, secreting cells, idioblasts, and glandular trichomes, lipids, phenolic compounds and starch are present. Cluster analysis identified three distinct groups of species based on anatomical features studied.

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“…Seeds, for instance of P. amalago (Souza and Rosa, unpublished data), P. crassinervium H. B. and K. and P. hispidum Sw. (Albiero, 2005) germinated and formed phanerocotylar seedlings. In spite of the possible sexual reproduction it was observed that Piperaceae species occurred as big shrubs and could spread vegetatively.…”

Section: Resultsmentioning

confidence: 99%