Endosymbiosis
Mostrando 1-12 de 40 artigos, teses e dissertações.
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1. Symbiont modulates expression of specific gene categories in Angomonas deanei
Trypanosomatids are parasites that cause disease in humans, animals, and plants. Most are non-pathogenic and some harbor a symbiotic bacterium. Endosymbiosis is part of the evolutionary process of vital cell functions such as respiration and photosynthesis. Angomonas deanei is an example of a symbiont-containing trypanosomatid. In this paper, we sought to in
Mem. Inst. Oswaldo Cruz. Publicado em: 03/10/2016
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2. Dependência e resposta de mudas de cedro a fungos micorrízicos arbusculares.
Os objetivos deste trabalho foram avaliar a resposta de mudas de cedro (Cedrela fissilis Vell.) a espécies de fungos micorrízicos arbusculares (FMA) e determinar o grau de dependência micorrízica dessas mudas. O ensaio foi conduzido em casa de vegetação, em delineamento de blocos inteiramente casualizados, em esquema fatorial 5 (doses de P) x 5 (4 esp�
Pesquisa Agropecuária Brasileira. Publicado em: 2011
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3. Modelando evolução por endossimbiose / Modeling evolution by endosymbiosis
Nesta dissertação é apresentada uma modelagem analítica para o processo evolucionário formulado pela Teoria da Evolução por Endossimbiose representado através de uma sucessão de estágios envolvendo diferentes interações ecológicas e metábolicas entre populações de bactérias considerando tanto a dinâmica populacional como os processos produt
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 13/07/2010
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4. Algoritmo treansgenético na solução do problema do Caixeiro Viajante
The Traveling Purchaser Problem is a variant of the Traveling Salesman Problem, where there is a set of markets and a set of products. Each product is available on a subset of markets and its unit cost depends on the market where it is available. The objective is to buy all the products, departing and returning to a domicile, at the least possible cost defin
Publicado em: 2007
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5. The single, ancient origin of chromist plastids
Algae include a diverse array of photosynthetic eukaryotes excluding land plants. Explaining the origin of algal plastids continues to be a major challenge in evolutionary biology. Current knowledge suggests that plastid primary endosymbiosis, in which a single-celled protist engulfs and “enslaves” a cyanobacterium, likely occurred once and resulted in t
National Academy of Sciences.
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6. Presence of a mitochondrial-type 70-kDa heat shock protein in Trichomonas vaginalis suggests a very early mitochondrial endosymbiosis in eukaryotes
Molecular phylogenetic analyses, based mainly on ribosomal RNA, show that three amitochondriate protist lineages, diplomonads, microsporidia, and trichomonads, emerge consistently at the base of the eukaryotic tree before groups having mitochondria. This suggests that these groups could have diverged before the mitochondrial endosymbiosis. Nevertheless,
The National Academy of Sciences of the USA.
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7. Dynamin: The endosymbiosis ring of power?
The National Academy of Sciences.
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8. Endosymbiosis: Lessons in Conflict Resolution
Endosymbiotic bacteria live within a host species. There are many and diverse examples of such relationships, the study of which provides important lessons for ecology and evolution
Public Library of Science.
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9. Phylogenomic evidence supports past endosymbiosis, intracellular and horizontal gene transfer in Cryptosporidium parvum
An analysis of Cryptosporidium parvum genes of likely endosymbiont or prokaryotic origin supports the hypothesis that C. arvum evolved from a plastid-containing lineage.
BioMed Central.
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10. A single origin of the peridinin- and fucoxanthin-containing plastids in dinoflagellates through tertiary endosymbiosis
The most widely distributed dinoflagellate plastid contains chlorophyll c2 and peridinin as the major carotenoid. A second plastid type, found in taxa such as Karlodinium micrum and Karenia spp., contains chlorophylls c1 + c2 and 19′-hexanoyloxy-fucoxanthin and/or 19′-butanoyloxy-fucoxanthin but lacks peridinin. Because the presence of chlorophylls c1 +
The National Academy of Sciences.
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11. Genomics and chloroplast evolution: what did cyanobacteria do for plants?
Plant chloroplast originated, through endosymbiosis, from a cyanobacterium, but the genomic legacy of cyanobacterial ancestry extends far beyond the chloroplast itself, and persists in organisms that have lost chloroplasts completely.
BioMed Central.
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12. Second- and third-hand chloroplasts in dinoflagellates: Phylogeny of oxygen-evolving enhancer 1 (PsbO) protein reveals replacement of a nuclear-encoded plastid gene by that of a haptophyte tertiary endosymbiont
Several dinoflagellate species have plastids that more closely resemble those of an unrelated algal group, the haptophytes, suggesting these plastids have been obtained by tertiary endosymbiosis. Because both groups are photosynthetic, all of the genes for nuclear-encoded plastid proteins might be supplied by the dinoflagellate host or some of them might hav
The National Academy of Sciences.