Charophyceae
Mostrando 1-12 de 13 artigos, teses e dissertações.
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1. VariaÃÃo da composiÃÃo, distribuiÃÃo espacial e influÃncia dos fatores ambientais sobre a ocorrÃncia de Characeae (Chlorophyta) em um reservatÃrio subtropical / Variation of the Composition, Spatial Distribution and Influence of Environmental Factors on the occurrence of Characeae (Chlorophyta) in a subtropical reservoir
A famÃlia Characeae, representada no Brasil pelos gÃneros Chara e Nitella, Ã considerada a ancestral mais prÃxima das plantas terrestres e possui uma sÃrie de papÃis ecolÃgicos, entre eles o aumento da transparÃncia da Ãgua, aumento da complexidade de habitat. O presente trabalho objetivou verificar a composiÃÃo e estrutura da comunidade de Charac
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 28/04/2011
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2. "Check List" das Charophyceae do Estado de São Paulo
A primeira referência à ocorrência de material de Characeae no Estado de São Paulo está em Braun (1883). Nesse trabalho, foram citadas duas espécies de Nitella : N. acuminata A. Braun var.subglomerata A. Braun e N. microcarpa A. Braun subsp. glaziovii (Zeller) Nordstedt f. santosa Nordstedt. Seguem a esse, dois outros trabalhos que trataram as Characea
Biota Neotrop.. Publicado em: 2011-12
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3. Novos registros de Nitella (Chlorophyta, Characeae) para regiões dos Estados de Mato Grosso e Mato Grosso do Sul, Brasil
As Charophyceae (Chlorophyta) representam uma classe única de algas devido à sua estrutura vegetativa e porte macroscópico dos gametângios. O inventário florístico do gênero Nitella (Characeae, Chlorophyta) nos Estados de Mato Grosso (18º55'05"S e 54º50'39"W) e Mato Grosso do Sul (19º12'03"S e 57º35'32"W), foi realizado a partir da análise espéc
Hoehnea. Publicado em: 2011-09
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4. Algas verdes corticícolas de remanescentes de floresta tropical na região noroeste do Estado de São Paulo, Brasil
As algas habitam uma grande variedade de ambientes e substratos terrestres; entretanto o conhecimento taxonômico para as regiões tropicais ainda é escasso. Esse levantamento foi conduzido em 10 fragmentos florestais no Estado de São Paulo, onde crescimentos visíveis de algas e briófitas foram coletados e os principais componentes da comunidade algal fo
Brazilian Journal of Botany. Publicado em: 2010-06
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5. Variação temporal de Nitella furcata subsp. mucronata var. mucronata f. oligospira (Charophyceae) no Lago das Ninféias, São Paulo, sudeste do Brasil
Dinâmica temporal de uma população de Nitella furcata (Roxburgh ex Bruzelius) C. Agardh emend. R.D. Wood subsp. mucronata (A. Braun) R.D. Wood var. mucronata f. oligospira (A. Braun) R.D. Wood foi estudada no Lago das Ninféias (23°38'18,9"S, 46°37'16,3"W), um reservatório tropical, raso, mesotrófico situado na Reserva Biológica do Parque Estadual da
Acta Botanica Brasilica. Publicado em: 2006-03
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6. Different fates of the chloroplast tufA gene following its transfer to the nucleus in green algae.
Previous work suggested that the tufA gene, encoding protein synthesis elongation factor Tu, was transferred from the chloroplast to the nucleus within the green algal lineage giving rise to land plants. In this report we investigate the timing and mode of transfer by examining chloroplast and nuclear DNA from the three major classes of green algae, with emp
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7. Group I introns are inherited through common ancestry in the nuclear-encoded rRNA of Zygnematales (Charophyceae).
Group I introns are found in organellar genomes, in the genomes of eubacteria and phages, and in nuclear-encoded rRNAs. The origin and distribution of nuclear-encoded rRNA group I introns are not understood. To elucidate their evolutionary relationships, we analyzed diverse nuclear-encoded small-subunit rRNA group I introns including nine sequences from the
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8. Molecular Characterization of Epiphytic Bacterial Communities on Charophycean Green Algae
Epiphytic bacterial communities within the sheath material of three filamentous green algae, Desmidium grevillii, Hyalotheca dissiliens, and Spondylosium pulchrum (class Charophyceae, order Zygnematales), collected from a Sphagnum bog were characterized by PCR amplification, cloning, and sequencing of 16S ribosomal DNA. A total of 20 partial sequences and ni
American Society for Microbiology.
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9. Two Class I Aldolases in the Green Alga Chara foetida (Charophyceae) 1
Aldolase activity of Chara foetida (Braun) could be separated into a minor (peak I) and a major peak (peak II) by ion-exchange chromatography on DEAE-cellulose. Affinity chromatography on P-cellulose resulted in highly purified aldolase preparations with specific activities of 3.2 and 4.8 units per milligram protein and molecular subunit masses of 37 and 35
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10. 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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11. 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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12. The Mitochondrial Genome of Chara vulgaris: Insights into the Mitochondrial DNA Architecture of the Last Common Ancestor of Green Algae and Land PlantsW⃞
Mitochondrial DNA (mtDNA) has undergone radical changes during the evolution of green plants, yet little is known about the dynamics of mtDNA evolution in this phylum. Land plant mtDNAs differ from the few green algal mtDNAs that have been analyzed to date by their expanded size, long spacers, and diversity of introns. We have determined the mtDNA sequence o
American Society of Plant Biologists.