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| Silva,Taiza M.; Vilhalva,Divina A.A.; Moraes,Moemy G.; Figueiredo-Ribeiro,Rita de Cássia L.. |
| Among the compounds stored by plants, several functions are assigned to fructans, such as source of energy and protection against drought and extreme temperatures. In the present study we analyzed the anatomy and distribution of fructans in vegetative organs of Dimerostemma vestitum (Asteraceae), an endemic species from the Brazilian campos rupestres. D. vestitum has amphistomatic and pubescent leaves, with both glandular and non-glandular trichomes. In the basal aerial stem the medulla has two types of parenchyma, which differ from the apical portion. The xylopodium has mixed anatomical origin. Interestingly, although inulin-type fructans with high degree of polymerization were found in all analyzed organs except the leaves, the highest amount and maximum... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Campo rupestre; Fructans; Inulin spherocrystals; Secretory structures; Xylopodium. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652015000200797 |
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| Vilhalva,Divina A.A.; Appezzato-da-Glória,Beatriz. |
| Várias espécies herbáceas do cerrado apresentam sistema subterrâneo espessado, esses podem ser de natureza radicular, caulinar ou mista. Esses sistemas muitas vezes possuem potencial gemífero, promovendo o rebrotamento de ramos aéreos após um período desfavorável do ambiente, como uma seca prolongada ou uma queimada. A verificação da natureza dos sistemas subterrâneos é de extrema importância para utilização correta da terminologia dos mesmos. O objetivo desse trabalho foi fornecer informações sobre a morfo-anatomia dos sistemas subterrâneos de Calea verticillata e Isostigma megapotamicum, com ênfase na formação de gemas caulinares. Os sistemas subterrâneos foram coletados em áreas do cerrado do Estado de São Paulo. As espécies apresentam sistema... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Anatomia; Cerrado; Gemas; Reservas; Xilopódios. |
| Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042006000100005 |
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| Santos,Vanessa S.; Souza,Vinicius P.; Vilhalva,Divina A.A.; Ferreira,Fernanda P.S.; Paula,José R.; Rezende,Maria Helena. |
| The occurrence of thickened underground systems in Asteraceae is widely reported in the literature. Given the great complexity of underground systems, which may originate from roots, stems, or both, morpho-anatomical analyses are essential to ensure the use of correct terminology. The goals of this study were to describe the morpho-anatomy and ontogeny, investigate the occurrence of secondary metabolites and evaluate the effects of seasonality on the underground system of Chrysolaena simplex (Less.) Dematt. Samples were studied using standard protocols of plant anatomy, scanning electron microscopy, histochemical and phytochemical. The underground system of C. simplex was categorised as a rhizophore which started from cotyledonary node. In adult... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bud; Cerrado; Fructan; Phytochemical; Rhizophore; Secretory ducts. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652016000100269 |
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