Monocotyledons
Mostrando 13-24 de 40 artigos, teses e dissertações.
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13. Ecologia e Similaridade de Orchidaceae em um Trecho da Serra da Mantiqueira na Zona da Mata de Minas Gerais, Brasil
Neste trabalho, é apresentada a lista de espécies de Orchidaceae da Serra Negra/Serra do Funil (SN/SF), associada à distribuição das espécies ao longo do gradiente altitudinal e ao mosaico de ambientes encontrados na área. A flora de Orchidaceae da SN/SF, também é investigada sob aspectos das relações florísticas com 29 localidades nos estados da
Publicado em: 2010
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14. Metabólitos secundários da família bromeliaceae
This review describes aspects of the Bromeliaceae family dealing the traditional applications, biological activities and distribution of secondary metabolites in distinct subfamilies. Some species are used with medicinal purposed in the treatment of respiratory, diabetes or inflammation diseases, and gastrointestinal disorders. Special emphasis on cycloartan
Química Nova. Publicado em: 2009
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15. The role of the endodermis and pericycle in the formation of primary tissues in Commelinaceae (Monocotyledons) / Estudos em Commelinaceae (Monocotiledôneas): o papel da endoderme e do periciclo na formação do corpo primário
The aim of this work is to show the meristematic activity of the endodermis in roots of five species of Commelinaceae (Commelina erecta, Floscopa glabrata, Dichorisandra tyrsiflora, Tradescantia spathacea e T. zebrina). In all species was observed the initial endodermis suffered several periclinal divisions, originating the radiate layers of the cortex cells
Publicado em: 2008
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16. Distribution of a Ty3/gypsy-like retroelement on the A and B-chromosomes of Cestrum strigilatum Ruiz & Pav. and Cestrum intermedium Sendtn. (Solanaceae)
Retroelements are a diversified fraction of eukaryotic genomes, with the Ty1/copia and Ty3/gypsy groups being very common in a large number of plant genomes. We isolated an internal segment of the Ty3/gypsy retroelement of Cestrum strigilatum (Solanaceae) using PCR amplification with degenerate primers for a conserved region of reverse transcriptase. The iso
Genetics and Molecular Biology. Publicado em: 2007
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17. Erratum to: Meristematic activity of the endodermis and the pericycle in the primary thickening in monocotyledons. Considerations on the "PTM" [An Acad Bras Cienc 77(2005): 259-274]
Anais da Academia Brasileira de Ciências. Publicado em: 2005-12
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18. Meristematic activity of the Endodermis and the Pericycle in the primary thickening in monocotyledons: considerations on the "PTM"
A proposta deste trabalho é mostrar uma nova interpretação do meristema de espessamento primário em monocotiledôneas. Anatomia dos órgãos vegetativos das seguintes espécies foi examinada: Cephalostemon riedelianus (Rapataceae), Cyperus papyrus (Cyperaceae), Lagenocarpus rigidus, L. Junciformis (Cyperaceae), Echinodorus paniculatus (Alismataceae) and
Anais da Academia Brasileira de Ciências. Publicado em: 2005-06
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19. Insertion of pr5k gene in sugar cane to induce resistant plants to rust disease fungi puccinia melanocephala. / Inserção do gene PR5K em cana-de-açúcar visando induzir resistência ao fungo da ferrugem Puccinia melanocephala.
The Sugar cane is very important culture for many countries especially Brazil. This culture however presents many problems with diseases; mainly rust disease that is spread mechanically and caused by Puccinia melanocephala fungi. The aim of this work was to get resistant plants with the gene PR5K , which is related to PR5 resistant proteins. Embriogenic call
Publicado em: 2003
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20. Polinização por beija-flores em remanescente da Mata Atlantica pernambucana, nordeste do Brasil
Hummingbirds are the major vertebrate pollinators of Neotropical plants, pollination by hummingbird being found in many botanical families. Studies on pollination guilds constitutes an efficient way to understand ecological processes in natural ecosystems. During the period of May/1997 and January/1999 and August to Dezember/1999 we studied the ornithophilou
Publicado em: 2002
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21. Phylogenetic analysis of rbcL sequences identifies Acorus calamus as the primal extant monocotyledon.
The identity of the oldest lineage of monocotyledons is a subject of debate. Alternative interpretations of morphological homologies are variously consistent with proposals that species of Alismatanae, Dioscoreales, or Melanthiales were the earliest descendants of the first monocotyledons. We present phylogenetic analyses based on DNA sequences of the plasti
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22. Carbon Dioxide Compensation Points of Flowering Plants 1
Carbon dioxide compensation points of several hundred species of monocotyledons and dicotyledons have been measured during the course of various experiments in our laboratory over a period of several years. These have been classified into two groups: high, compensation points of 40 μl/l or greater; and low, compensation points of 10 μl/l or less. They are
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23. A Surprising Diversity and Abundance of Xyloglucan Endotransglucosylase/Hydrolases in Rice. Classification and Expression Analysis1
A search of the recently completed genomic database of rice (Oryza sativa) identified a 29-member xyloglucan endotransglucosylase/hydrolase (OsXTH) gene family. This first report of a complete XTH family from a monocotyledonous species reveals that the OsXTH family is comparable in size with that of the dicotyledon Arabidopsis thaliana, which consists of 33
The American Society for Plant Biologists.
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24. Localization of Ribulose Bisphosphate Carboxylase in the Guard Cells by an Indirect, Immunofluorescence Technique 1
Ribulose bisphosphate carboxylase, a key enzyme in the photosynthetic carboxylation process, has been localized through an indirect immunofluorescent technique in the guard cells of some of the 41 species of plants examined. This sample includes 17 families of both dicotyledons and monocotyledons, one gymnosperm, and one pteridophyte. Plants were selected to