Prasinophyceae
Mostrando 1-12 de 14 artigos, teses e dissertações.
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1. O fitoplâncton da Baía de Guanabara, Brasil: I. histórico da biodiversidade local
Este é o histórico dos estudos sobre a biodiversidade do fitoplâncton da Baía da Guanabara, Brasil, com base em 57 publicações relativas a amostras coletadas no período entre 1913 e 2004. Estão aqui incluídas apenas as investigações que identificaram espécies por microscopia. Apesar de 80% dos estudos serem de cunho ecológico, os quais tendem a
Biota Neotropica. Publicado em: 2010-06
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2. Algas verdes flageladas de quarto corpos d'água no Estado do Rio de Janeiro, Sudeste do Brasil
Inventário florístico das algas verdes flageladas (Chlorophyceae e Prasinophyceae) de quatro corpos d'água do sudeste do estado do Rio de Janeiro, Brasil. Com base em amostras coletadas bimensalmente, entre setembro de 1988 e agosto de 1999, foram identificados 35 táxons distribuídos em 31 Chlorophyceae (24 Chlamydomonadales e sete Volvocales) e quatro
Hoehnea. Publicado em: 2008
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3. Urban secondary sewage: an alternative medium for the culture of Tetraselmis chuii (Prasinophyceae) and Dunaliella viridis (Chlorophyceae)
Foi estudado o efeito das diferentes concentrações de esgoto urbano secundário (10%, 20%, 30% e 40%) sobre o crescimento de Tetraselmis chuii (Prasinophyceae) e Dunaliellla viridis (Chlorophyceae) para verificar a possibilidade do seu uso como meio de cultura altenativo para estas espécies. Culturas stocks duplicatas de 700mL foram mantidas sob condiçõ
Brazilian Archives of Biology and Technology. Publicado em: 2004-07
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4. Atividade extra e intracelular da Anidrase Carbônica na microalga marinha Tetraselmis gracilis (Chlorophyta)
As atividades da Anidrase Carbônica (AC) extra e intracelular foram estudadas na microalga marinha Tetraselmis gracilis (Kylin) Butcher (Chlorophyta, Prasinophyceae) crescendo em cultivos laboratoriais. Durante dez dias de cultivo, determinações diárias do pH, número de células, atividades enzimáticas, carbono inorgânico total dissolvido (CID) e suas
Brazilian Journal of Microbiology. Publicado em: 2003-07
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5. A Single Species, Micromonas pusilla (Prasinophyceae), Dominates the Eukaryotic Picoplankton in the Western English Channel
The class Prasinophyceae (Chlorophyta) contains several photosynthetic picoeukaryotic species described from cultured isolates. The ecology of these organisms and their contributions to the picoeukaryotic community in aquatic ecosystems have received little consideration. We have designed and tested eight new 18S ribosomal DNA oligonucleotide probes specific
American Society for Microbiology.
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6. The complete mitochondrial DNA sequences of Nephroselmis olivacea and Pedinomonas minor. Two radically different evolutionary patterns within green algae.
Green plants appear to comprise two sister lineages, Chlorophyta (classes Chlorophyceae, Ulvophyceae, Trebouxiophyceae, and Prasinophyceae) and Streptophyta (Charophyceae and Embryophyta, or land plants). To gain insight into the nature of the ancestral green plant mitochondrial genome, we have sequenced the mitochondrial DNAs (mtDNAs) of Nephroselmis olivac
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7. The complete chloroplast DNA sequence of the green alga Nephroselmis olivacea: Insights into the architecture of ancestral chloroplast genomes
Green plants seem to form two sister lineages: Chlorophyta, comprising the green algal classes Prasinophyceae, Ulvophyceae, Trebouxiophyceae, and Chlorophyceae, and Streptophyta, comprising the Charophyceae and land plants. We have determined the complete chloroplast DNA (cpDNA) sequence (200,799 bp) of Nephroselmis olivacea, a member of the class (Prasinoph
The National Academy of Sciences.
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8. Starch Division and Partitioning. A Mechanism for Granule Propagation and Maintenance in the Picophytoplanktonic Green Alga Ostreococcus tauri1[w]
Whereas Glc is stored in small-sized hydrosoluble glycogen particles in archaea, eubacteria, fungi, and animal cells, photosynthetic eukaryotes have resorted to building starch, which is composed of several distinct polysaccharide fractions packed into a highly organized semicrystalline granule. In plants, both the initiation of polysaccharide synthesis and
American Society of Plant Biologists.
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9. Gene sequence and expression of an analog of proliferating cell nuclear antigen (PCNA) in the alga Tetraselmis chui and detection of the encoded protein with anti-rat PCNA monoclonal antibody.
To identify a phytoplankton cell cycle marker detected by a monoclonal antibody against mammalian proliferating cell nuclear antigen (PCNA) (S. Lin, J. Chang, and E. J. Carpenter, J. Phycol. 30:449-456, 1994), a PCNA gene fragment was isolated by reverse transcription-PCR from the marine unicellular alga Tetraselmis chui Butcher (Prasinophyceae). The gene fr
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10. Factors Affecting Development of Peroxisomes and Glycolate Metabolism among Algae of Different Evolutionary Lines of the Prasinophyceae.
Leaf-type peroxisomes are not present in the primitive unicellular Prasinophycean line of algae but are present in the multicellular algae Mougeotia, Chara, and Nitella, which are in the one evolutionary line, Charophyceae, that led to higher plants. Processes related to glycolate metabolism that may have been modified or induced with the appearance of perox
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11. Quantitative Assessment of Picoeukaryotes in the Natural Environment by Using Taxon-Specific Oligonucleotide Probes in Association with Tyramide Signal Amplification-Fluorescence In Situ Hybridization and Flow Cytometry
Picoeukaryotes (cells of <3 μm in diameter) contribute significantly to marine plankton biomass and productivity, and recently molecular studies have brought to light their wide diversity. Among the methods that have been used so far to quantify aquatic microorganisms, fluorescence in situ hybridization of oligonucleotide probes combined with flow cytometry
American Society for Microbiology.
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12. Study of Genetic Diversity of Eukaryotic Picoplankton in Different Oceanic Regions by Small-Subunit rRNA Gene Cloning and Sequencing
Very small eukaryotic organisms (picoeukaryotes) are fundamental components of marine planktonic systems, often accounting for a significant fraction of the biomass and activity in a system. Their identity, however, has remained elusive, since the small cells lack morphological features for identification. We determined the diversity of marine picoeukaryotes
American Society for Microbiology.