Gymnosperms
Mostrando 1-12 de 42 artigos, teses e dissertações.
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1. Arbuscular mycorrhizal fungi and dark septate fungi in plants associated with aquatic environments
ABSTRACT There have been several reports of symbionts in the roots of plants that live in aquatic environments. Arbuscular mycorrhizal fungi (AMF) are the most common microsymbionts and possibly recolonized the aquatic environment together with plants; however, their functions and the extent of their benefits are unclear. Furthermore, the presence of other g
Acta Bot. Bras.. Publicado em: 2017-06
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2. Atmospheric pollen and spore content in the urban area of the city of Medellin, Colombia
The atmosphere of the urban area of the city of Medellin, Colombia was monitored with the objective of identifying airborne pollen and spores throughout a whole year. Sampling was performed between February 2010 and March 2011, coinciding with the La Niña climate phenomenon, which is characterized by a considerable increase in precipitation. Samples of airb
Hoehnea. Publicado em: 2015-03
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3. Seasonality and chemical elicitation of defense oleoresin production in field-grown slash pine under subtropical climate
Oleoresin is a key defense strategy of advanced gymnosperms, based on the combination of a complex anatomical structure of resin ducts and elaborate terpene biochemistry. Given the vast array of oleoresin economic applications in the chemical, pharmaceutical, agrochemical, and biofuel industries, translating factors that regulate terpene biosynthesis into hi
Theor. Exp. Plant Physiol.. Publicado em: 2013
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4. Early Creatceous gymnosperms from the Crato Formation, Araripe Basin, Northeast Brazil / Gimnospermas eocretáceas da Formação Crato, bacia do Araripe, Nordeste do Brasil
Crato Formation, located in the Araripe Basin, Northeastern Brazil, bears one of the most important Lower Cretaceous fóssil plant Record. The fossils have an excellent preservation, usually low fragmentated, with attached organs and epidermic and anatomic features delicatedly replaced by iron oxides. As it happens worldwide, gymnosperms were the dominant gr
Publicado em: 2007
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5. New Gymnosperms and possible Angiosperm from the Crato Palaeoflora, Early Cretaceous of Araripe Basin, Northeastern Brazil / Novas Gimnospermas e possivel Angiosperma da Paleoflora Crato, Eocretaceo da Bacia do Araripe, Nordeste do Brasil
Fitofósseis inéditos excelentemente preservados na forma de impressões/ são descritos e revelam novas espermatófitas da Paleoflora Crato, proveniente dos calcários laminados do Membro Crato, Fonnação Santana, Cretáceo Inferior, Aptiano da Bacia do Araripe, Ceará, Nordeste do Brasil. Importantes lacunas taxonômicas da paleoflora deverão ser preenc
Publicado em: 2007
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6. The ANUROFAUNA Of FORMATION CRATO, EOCRETÃCEO Of the BASIN Of the ARARIPE / A ANUROFAUNA DA FORMAÃÃO CRATO, EOCRETÃCEO DA BACIA DO ARARIPE,
The Crato Formation, Araripe Basin, has yielded one of the most important Early Cretaceous fossil assemblages world-wide, being specially famous for the abundance, taxonomic diversity, and exceptional preservation of its fossils. Its beds contain remains of a continental flora and fauna that have been interpreted to represent a lacustrine environment. The ai
Publicado em: 2006
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7. The leaves of green plants as well as a cyanobacterium, a red alga, and fungi contain insulin-like antigens
We report the detection of insulin-like antigens in a large range of species utilizing a modified ELISA plate assay and Western blotting. We tested the leaves or aerial parts of species of Rhodophyta (red alga), Bryophyta (mosses), Psilophyta (whisk ferns), Lycopodophyta (club mosses), Sphenopsida (horsetails), gymnosperms, and angiosperms, including monocot
Brazilian Journal of Medical and Biological Research. Publicado em: 2002-03
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8. APICAL MERISTEMS OF VEGETATIVE SHOOTS AND STROBILI IN CERTAIN GYMNOSPERMS
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9. Nucleotide sequences of cytosolic 5S ribosomal RNAs from two gymnosperms, Gnetum gnemon and Ephedra kokanica.
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10. Seed plant phylogeny inferred from all three plant genomes: Monophyly of extant gymnosperms and origin of Gnetales from conifers
Phylogenetic relationships among the five groups of extant seed plants are presently quite unclear. For example, morphological studies consistently identify the Gnetales as the extant sister group to angiosperms (the so-called “anthophyte” hypothesis), whereas a number of molecular studies recover gymnosperm monophyly, and few agree with the morphology-b
The National Academy of Sciences.
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11. Phylogeny of seed plants based on all three genomic compartments: Extant gymnosperms are monophyletic and Gnetales' closest relatives are conifers
Efforts to resolve Darwin's “abominable mystery”—the origin of angiosperms—have led to the conclusion that Gnetales and various fossil groups are sister to angiosperms, forming the “anthophytes.” Morphological homologies, however, are difficult to interpret, and molecular data have not provided clear resolution of relationships among major groups
The National Academy of Sciences.
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12. M13 repeat probe detects DNA minisatellite-like sequences in gymnosperms and angiosperms.
Several kinds of minisatellite DNA, all of which are composed of low to moderately repetitive DNA, have been identified in tetrapod genomes. While the repeating oligonucleotide elements (subrepeats) of a given minisatellite are virtually identical, subrepeat nucleotide composition differs between different minisatellites. Several minisatellites have exhibite