Isoetes
Mostrando 1-8 de 8 artigos, teses e dissertações.
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1. Morphology of the megaspore Lagenoisporites magnus (Chi and Hills 1976) Candilier et al. (1982), from the Carboniferous (lower Mississippian: mid-upper Tournaisian) of Bolivia
Abstract: The morphology and structure of megaspores assigned to Lagenoisporites magnus from the Toregua Formation, Retama Group, mid-upper Tournaisian of Bolivia were studied. The analysis was performed with light, fluorescence and scanning electron microscopy. Megaspores were laterally compressed and presented a spherical body with a proximal gula, of the
An. Acad. Bras. Ciênc.. Publicado em: 22/07/2019
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2. Flora of the cangas of Serra dos Carajás, Pará, Brazil: Isoetaceae
Resumo Este estudo apresenta o tratamento taxonômico das espécies de Isoetaceae da Serra dos Carajás, Pará, Brasil. Nesta localidade ocorrem duas espécies (Isoetes cangae e I. serracarajensis). Aqui são apresentados descrições, ilustrações, imagens dos mega- e microsporos, comentários, dados da distribuição geográfica e uma chave para estas esp
Rodriguésia. Publicado em: 2017
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3. Effects of flooding on the spatial distribution of soil seed and spore banks of native grasslands of the Pantanal wetland
ABSTRACTTo better understand the role that flooding plays in shaping plant communities of native floodable grasslands of the Pantanal and to characterize the spatial distribution of plants, we present the results of a survey of soil seed and spore banks using the seedling emergence method. We hypothesized that terrain subjected to the deepest and longest flo
Acta Bot. Bras.. Publicado em: 2015-09
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4. Isoetes pedersenii, a new species from Southern South America
O nome Isoetes pedersenii H.P. Fuchs (Lycophyta) foi validado para a espécie identificada apenas no Parque Nacional de Mburucuyá, em Corrientes na Argentina. Material preservado em herbário foi avaliado com microscópios estereoscó pico, de luz branca e eletrônico de varredura. A espécie foi descrita e tipificada. Um diagnóstico e uma discussão sobre
Anais da Academia Brasileira de Ciências. Publicado em: 2010-06
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5. Morphology and ultrastructure of megaspores and microspores of Isoetes sehnemii Fuchs (Lycophyta)
A morfologia e a ultraestrutura da parede de megasporos e microspores de Isoetes sehnemii que crescem no Brasil foram analisados como parte do estudo de Isoetaceae presente no sul da América do Sul. As observações foram realizadas com microscopias de luz e eletrônicas de transmissão e varredura. Os megasporos são triletes com 350-450μm de diâmetro eq
Anais da Academia Brasileira de Ciências. Publicado em: 2010-06
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6. Pteridófitas da caatinga : lista anotada, análise da composição florística e padrões de distribuição geográfica.
This work represents the first comprehensive contribution to the knowledge of the pteridophyte flora of Caatinga vegetation (semi-arid region in northeastern Brazil and northern of Minas Gerais State). With the purpose to collecties and observies the species, localities along nine thousand kilometers of roads were visited. Samples deposited in regional herba
Publicado em: 2007
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7. Expression of Sporophytic Storage Proteins in the Corm of the Quillwort (Isoetes echinospora Dur.).
Parenchyma cells from the corm tissue of the aquatic lycopod Isoetes echinospora Dur. were shown by electron microscopy to be packed with amyloplasts, lipid bodies, and protein bodies. The protein bodies are morphologically similar to those identified in seeds and certain vegetative tissues of higher plants. Globoid-containing protein bodies (1-10 [mu]m) iso
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8. RNA editing in bryophytes and a molecular phylogeny of land plants.
RNA editing has been observed to date in all groups of vascular plants, but not in bryophytes. Its occurrence was therefore assumed to correlate with the evolution of tracheophytes. To gain more insight into both the phylogeny of early land plants and the evolution of mitochondrial RNA editing we have investigated a number of vascular and non-vascular plant