Mostrando recursos 1 - 3 de 3

  1. Eukaryotic metabarcoding pipelines for biodiversity assessment of marine benthic communities affected by ocean acidification

    Soto Valdés, Ana Zaida
    The development of high-throughput sequencing technologies has provided ecologists with an efficient approach to assess biodiversity in benthic communities, particularly with the recent advances in metabarcoding technologies using universal primers. However, analyzing such high-throughput data is posing important computational challenges, requiring specialized bioinformatics solutions at different stages during the processing pipeline, such as assembly of paired-end reads, chimera removal, correction of sequencing errors, and clustering of obtained sequences into Molecular Operational Taxonomic Units (MOTUs). The inferred MOTUs can then be used to estimate species diversity, composition, and richness. Although a number of methods have been developed and commonly used to...
    - 29-nov-2017

  2. The interaction between the energy and Gibberellin signaling pathway – a molecular approach

    Lopes, Cláudia Isabel Rodrigues
    As plantas, sendo organismos sésseis, não conseguem escapar a condições de stress biótico e abiótico por mais severas que estas possam ser. Essas condições de stress resultam tipicamente em défice energético afetando o crescimento e desenvolvimento da planta. Assim, para uma resposta eficiente ao stress é crucial que esta seja acompanhada pela ativação de mecanismos que assegurem a reposição da homeostasia energética. SnRK1 (sucrose non-fermenting 1-related protein kinase 1) deteta condições de stress energético devidas a escassez de nutrientes, stress ambiental ou escuridão repentina, e atua controlando o metabolismo e a transcrição de genes para garantir a homeostasia. São cada...
    - 29-nov-2017

  3. Invasive marine macroalgae and their current and potential use in cosmetics

    McReynolds, Colin
    With increasing interconnectivity, human population growth along coastlines and changing climate, nearshore ecological assemblages are being modified at an unprecedented rate. These changes are bringing to light widespread proliferations of macroalgae, with various effects on the affected ecosystems. However, this abundance may also present opportunities. The production of cosmetics, and particularly those from natural origin, is in high demand. Many of the invasive species have demonstrated biological activity that can be applied to skin care products, so-called ‘cosmeceuticals’. A survey of common ‘invasive’ species revealed 47 species, 16 Chlorophyta, 19 Rhodophyta and 12 Phaeophyta. Their effects are interlinked but the...
    - 29-ago-2017

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