Consulta: subjectFacets:"Endosymbiosis"
Registros recuperados: 6
Data/hora: 13/06/2024 11:05:17

Variación intraespecífica del hongo conidiobolus coronatus y su relación endosimbiótica con la bacteria pseudomonas sp.
Provedor de dados: 32
Autores: Pérez Martínez, Carolina.
El hongo Conidiobolus coronatus es un saprófito facultativo, patógeno de muchas especies de insectos e incluso está reportado como causante de micosis subcutánea en humanos, aunque los reportes de esto último son poco comunes y se restringen a regiones con climas tropicales y de alta humedad. En la presente investigación se analiza la variación genética de aislamientos de C. coronatus de diferentes hospedantes (incluyendo al humano) y se corrobora la presencia de una bacteria endosimbiótica en dicho hongo. Mediante las técnicas RAPD, SSR y secuenciación de ITS 1 y 2 y región 5.8, se obtuvo variación intraespecífica y una clara distancia genética entre aislamientos obtenidos de humanos y otras fuentes (insectos y suelo). Para corroborar la endosimbiosis, se...
Palavras-chave: Análisis filogenético; Clonación; Endosimbiosis; Entomoftorales; Microscopía Láser confocal; Multihospedero; Polimorfismo; Variación intraespecífica; Phylogenetic analysis; Cloning; Endosymbiosis; Entomophtorales; Confocal lasser microscopy; Multihost; Polimorphism; Intraespecific variation; Doctorado; Entomología y Acarología.
Ano: 2010
URL: http://hdl.handle.net/10521/366

A dual symbiosis shared by two mussel species, Bathymodiolus azoricus and Bathymodiolus puteoserpentis (Bivalvia : Mytilidae), from hydrothermal vents along the northern Mid-Atlantic Ridge
Provedor de dados: 5
Autores: Duperron, Sebastien; Bergin, C; Zielinski, F; Blazejak, A; Pernthaler, A; Mckiness, Z; Dechaine, E; Cavanaugh, C; Dubilier, Nicole.
Bathymodiolus azoricus and Bathymodiolus puteoserpentis are symbiont-bearing mussels that dominate hydrothermal vent sites along the northern Mid-Atlantic Ridge (MAR). Both species live in symbiosis with two physiologically and phylogenetically distinct Gammaproteobacteria: a sulfur-oxidizing chemoautotroph and a methane-oxidizer. A detailed analysis of mussels collected from four MAR vent sites (Menez Gwen, Lucky Strike, Rainbow, and Logatchev) using comparative 16S rRNA sequence analysis and fluorescence in situ hybridization (FISH) showed that the two mussel species share highly similar to identical symbiont phylotypes. FISH observations of symbiont distribution and relative abundances showed no obvious differences between the two host species. In...
Tipo: Text
Palavras-chave: Bacteria; Phylogeny; Fluorescence in situ hybridization (FISH); Methane oxidizer; Sulfur oxidizer; 16S rRNA; Endosymbiosis.
Ano: 2006
URL: http://archimer.ifremer.fr/doc/2006/publication-1864.pdf

Size-dependent variations on the nutritional pathway of Bathymodiolus azoricus demonstrated by a C-flux model
Provedor de dados: 5
Autores: Martins, Irene; Colaco, Ana; Dando, Paul R; Martins, I; Desbruyeres, Daniel; Sarradin, Pierre-marie; Marques, J; Serrao Santos, R.
Bathymodiolus azoricus is a mussel from vent fields in the south-west of the Azores Triple junction (Mid-Atlantic Ridge-MAR). Experimental evidence indicates that B. azoricus is a mixotrophic organism, which obtains energy from a dual endosymbiosis and filter-feeding. Yet the relative contribution of symbiosis and filter-feeding to B. azoricus nutrition is still unclear. To address this question, we developed and individual-based model which describes sulphide and methane uptake by endosymbionts, the energy gained through microbial oxidations, the transfer of energy from endosymbionts to B. azoricus, filter-feeding of particulate organic matter (POC) by B. azoricus and the energetic wastes of the mytilid with respiration. The model accounts for...
Tipo: Text
Palavras-chave: Carbon flux model; Organic matter; Size; Filter feeding; Endosymbiosis; Bathymodiolus azoricus.
Ano: 2008
URL: https://archimer.ifremer.fr/doc/2008/publication-4541.pdf

First Indonesian record of Fungiacava eilatensis Goreau et al., 1968 (Bivalvia: Mytilidae), endosymbiont of Fungia spp. (Scleractinia: Fungiidae)
Provedor de dados: 16
Autores: Hoeksema, B.W.; Achituv, Y.
The mytilid bivalve Fungiacava eilatensis Goreau, Goreau, Neumann &amp; Yonge, 1968, previously mistakenly referred to as F. eilatensis Soot-Ryen, 1969, is reported for the first time from Indonesia. It lives as an obligate endosymbiont of mushroom corals, particulary Fungia spp., reef-dwelling corals restricted to the tropical Indo-Pacific. Notes are given on its association with different host species, its habitat, its biogeography, and its possible competition with endosymbiotic gastropods belonging to the genus Leptoconchus (Coralliophilidae).
Tipo: Article / Letter to the editor
Palavras-chave: Bivalvia; Mytilidae; Fungiacava; Lithophaga; Gastropoda; Prosobranchia; Coralliophilidae; Leptoconchus; Endosymbiosis; Host species; Anthozoa; Scleractinia; Fungiidae; Fungia; Ecology; Biogeography; Indonesia; 42.72; 72.73.
Ano: 1993
URL: http://www.repository.naturalis.nl/record/268735

Characterization of Symbiotic Algae-free Strains of Paramecium bursaria Produced by the Herbicide Paraquat
Provedor de dados: 19
Autores: Nishihara, Naohisa; Takahashi, Tadao; Kosaka, Toshikazu; Hosoya, Hiroshi.
Palavras-chave: Paraquat; Algae-free paramecia; Paramecium bursaria; Endosymbiosis; Chlorella sp.
Ano: 1996
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/247

Bacteria associated with the extraradical mycelium of an arbuscular mycorrhizal fungus in an As/Cu polluted soil
Provedor de dados: 115
Autores: González-Chávez,Ma. del Carmen A.; Newsam,Ray; Linderman,Robert; Dodd,John; Valdez-Carrasco,Jorge M.
Synergistic interactions between bacteria and arbuscular mycorrhizal fungi (AMF) occur under natural soil conditions; however, in polluted soils there is little information regarding these relationships. Microscopy was used to study the interaction between the hyphae of an AM fungus (Glomus claroideum BEG134 from an As/Cu polluted soil) and bacteria in polluted soil cultures. BacLightTM staining showed viable bacteria mainly in the runner hyphae of the fungus associated with plants (Holcus lanatus L.) growing in polluted soils. Transmission electron microscopy revealed that a morphologically different bacterial population was intimately associated with the extraradical mycelium (ERM). Bacteria were embedded in the mucilaginous outer layer, encrusted at the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Glomus claroideum; Bacterial interaction; Endosymbiosis; Mycorrhizosphere; Rhizosphere synergism.
Ano: 2008
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952008000100001