Relevant bibliographies by topics / Epulopiscium

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  1. Journal articles
  2. Dissertations / Theses
  3. Book chapters

Academic literature on the topic 'Epulopiscium'

Author: Grafiati
Published: 4 June 2021
Last updated: 2 February 2022

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Journal articles on the topic "Epulopiscium"

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Flint, Joseph F., Dan Drzymalski, W. Linn Montgomery, Gordon Southam, and Esther R. Angert. "Nocturnal Production of Endospores in Natural Populations of Epulopiscium-Like Surgeonfish Symbionts." Journal of Bacteriology 187, no. 21 (November 1, 2005): 7460–70. http://dx.doi.org/10.1128/jb.187.21.7460-7470.2005.

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ABSTRACT Prior studies have described a morphologically diverse group of intestinal microorganisms associated with surgeonfish. Despite their diversity of form, 16S rRNA gene surveys and fluorescent in situ hybridizations indicate that these bacteria are low-G+C gram-positive bacteria related to Epulopiscium spp. Many of these bacteria exhibit an unusual mode of reproduction, developing multiple offspring intracellularly. Previous reports have suggested that some Epulopiscium-like symbionts produce dormant or phase-bright intracellular offspring. Close relatives of Epulopiscium, such as Metabacterium polyspora and Clostridium lentocellum, are endospore-forming bacteria, which raises the possibility that the phase-bright offspring are endospores. Structural evidence and the presence of dipicolinic acid demonstrate that phase-bright offspring of Epulopiscium-like bacteria are true endospores. In addition, endospores are formed as part of the normal daily life cycle of these bacteria. In the populations studied, mature endospores were seen only at night and the majority of cells in a given population produced one or two endospores per mother cell. Phylogenetic analyses confirmed the close relationship between the endospore-forming surgeonfish symbionts characterized here and previously described Epulopiscium spp. The broad distribution of endospore formation among the Epulopiscium phylogenetic group raises the possibility that sporulation is a characteristic of the group. We speculate that spore formation in Epulopiscium-like symbionts may be important for dispersal and may also enhance survival in the changing conditions of the fish intestinal tract.
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Angert, Esther R., and Kendall D. Clements. "Initiation of intracellular offspring in Epulopiscium." Molecular Microbiology 51, no. 3 (December 15, 2003): 827–35. http://dx.doi.org/10.1046/j.1365-2958.2003.03869.x.

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Robinow, C., and Esther R. Angert. "Nucleoids and coated vesicles of " Epulopiscium " spp." Archives of Microbiology 170, no. 4 (September 9, 1998): 227–35. http://dx.doi.org/10.1007/s002030050637.

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Bresler, V., and L. Fishelson. "Polyploidy and polyteny in the gigantic eubacterium Epulopiscium fishelsoni." Marine Biology 143, no. 1 (July 1, 2003): 17–21. http://dx.doi.org/10.1007/s00227-003-1055-2.

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Ngugi, David Kamanda, Sou Miyake, Matt Cahill, Manikandan Vinu, Timothy J. Hackmann, Jochen Blom, Matthew D. Tietbohl, Michael L. Berumen, and Ulrich Stingl. "Genomic diversification of giant enteric symbionts reflects host dietary lifestyles." Proceedings of the National Academy of Sciences 114, no. 36 (August 23, 2017): E7592—E7601. http://dx.doi.org/10.1073/pnas.1703070114.

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Herbivorous surgeonfishes are an ecologically successful group of reef fish that rely on marine algae as their principal food source. Here, we elucidated the significance of giant enteric symbionts colonizing these fishes regarding their roles in the digestive processes of hosts feeding predominantly on polysiphonous red algae and brown Turbinaria algae, which contain different polysaccharide constituents. Using metagenomics, single-cell genomics, and metatranscriptomic analyses, we provide evidence of metabolic diversification of enteric microbiota involved in the degradation of algal biomass in these fishes. The enteric microbiota is also phylogenetically and functionally simple relative to the complex lignocellulose-degrading microbiota of terrestrial herbivores. Over 90% of the enzymes for deconstructing algal polysaccharides emanate from members of a single bacterial lineage, “Candidatus Epulopiscium” and related giant bacteria. These symbionts lack cellulases but encode a distinctive and lineage-specific array of mostly intracellular carbohydrases concurrent with the unique and tractable dietary resources of their hosts. Importantly, enzymes initiating the breakdown of the abundant and complex algal polysaccharides also originate from these symbionts. These are also highly transcribed and peak according to the diel lifestyle of their host, further supporting their importance and host–symbiont cospeciation. Because of their distinctive genomic blueprint, we propose the classification of these giant bacteria into three candidate genera. Collectively, our findings show that the acquisition of metabolically distinct “Epulopiscium” symbionts in hosts feeding on compositionally varied algal diets is a key niche-partitioning driver in the nutritional ecology of herbivorous surgeonfishes.
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Gao, Yu-Miao, Ke-Shu Zou, Lei Zhou, Xian-De Huang, Yi-Yang Li, Xiang-Yang Gao, Xiao Chen, and Xiao-Yong Zhang. "Deep Insights into Gut Microbiota in Four Carnivorous Coral Reef Fishes from the South China Sea." Microorganisms 8, no. 3 (March 18, 2020): 426. http://dx.doi.org/10.3390/microorganisms8030426.

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Investigations of gut microbial diversity among fish to provide baseline data for wild marine fish, especially the carnivorous coral reef fishes of the South China Sea, are lacking. The present study investigated the gut microbiota of four carnivorous coral reef fishes, including Oxycheilinus unifasciatus, Cephalopholis urodeta, Lutjanus kasmira, and Gnathodentex aurolineatus, from the South China Sea for the first time using high-throughput Illumina sequencing. Proteobacteria, Firmicutes, and Bacteroidetes constituted 98% of the gut microbiota of the four fishes, and 20 of the gut microbial genera recovered in this study represent new reports from marine fishes. Comparative analysis indicated that the four fishes shared a similar microbial community, suggesting that diet type (carnivorous) might play a more important role in shaping the gut microbiota of coral reef fishes than the species of fish. Furthermore, the genera Psychrobacter, Escherichia-Shigella, and Vibrio constituted the core microbial community of the four fishes, accounting for 61–91% of the total sequences in each fish. The lack of the genus Epulopiscium in the four fishes was in sharp contrast to what has been found in coral reef fishes from the Red Sea, in which Epulopiscium was shown to be the most dominant gut microbial genus in seven herbivorous coral reef fishes. In addition, while unique gut microbial genera accounted for a small proportion (8–13%) of the total sequences, many such genera were distributed in each coral reef fish species, including several genera (Endozoicomonas, Clostridium, and Staphylococcus) that are frequently found in marine fishes and 11 new reports of gut microbes in marine fishes. The present study expands our knowledge of the diversity and specificity of gut microbes associated with coral reef fishes.
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Bresler, V., and L. Fishelson. "Export pumps in Epulopiscium fishelsoni, the symbiotic giant gut bacterium in Acanthurus nigrofuscus." Naturwissenschaften 93, no. 4 (March 14, 2006): 181–84. http://dx.doi.org/10.1007/s00114-006-0084-3.

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Arroyo, Francine A., Teresa E. Pawlowska, J. Howard Choat, Kendall D. Clements, and Esther R. Angert. "Recombination contributes to population diversification in the polyploid intestinal symbiont Epulopiscium sp. type B." ISME Journal 13, no. 4 (January 14, 2019): 1084–97. http://dx.doi.org/10.1038/s41396-018-0339-y.

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Pollak, Peggy E., and W. Linn Montgomery. "Giant bacterium (Epulopiscium fishelsoni ) influences digestive enzyme activity of an herbivorous surgeonfish (Acanthurus nigrofuscus)." Comparative Biochemistry and Physiology Part A: Physiology 108, no. 4 (August 1994): 657–62. http://dx.doi.org/10.1016/0300-9629(94)90352-2.

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Miller, D. A., J. H. Choat, K. D. Clements, and E. R. Angert. "The spoIIE Homolog of Epulopiscium sp. Type B Is Expressed Early in Intracellular Offspring Development." Journal of Bacteriology 193, no. 10 (March 11, 2011): 2642–46. http://dx.doi.org/10.1128/jb.00105-11.

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Dissertations / Theses on the topic "Epulopiscium"

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Miyake, Sou. "Studies on the structure and function of intestinal microbes of surgeonfishes in the central Red Sea with a focus on the giant bacteria Epulopiscium spp." Diss., 2015. http://hdl.handle.net/10754/552840.

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The intestinal tract microbiota – microbial community of the gut – is an important field in microbiology not only because of its critical role in the host development, but also increasingly large number of diseases are associated with certain state of the gut microbiota. The community structure and function of the gut microbiota is relatively well studied in humans and related higher vertebrates, but is severely understudied in fish. This is especially true for the coral reef fishes, who constitute the most diverse assemblage of vertebrates spread over a very local scale, and are essential for the resilience of the reefs. In order to bridge this gap in knowledge, this dissertation studied the community structure, interactions and functions of the gut microbial community from the surgeonfishes in the Red Sea – with special focus on the surgeonfish enteric symbiont Epulopiscium spp. Initially, I studied the composition of the gut microbiota of nine surgeonfish and three nonsurgeonfish species from the Red Sea using 454 pyrosequencing. Upon discovering the high abundance of Epulopiscium spp. in herbivorous surgeonfishes, I then proceeded to identify their phylogenetic diversity, distribution, as well as deducing their coevolutionary relationship with the host. Because Epulopiscium spp. undergo substantial changes in the cell size (grow up to ~600μm) and the DNA concentration (from 85 to over 250pg per cell) throughout their diel lifecycle, I also studied the temporal changes in their expression pattern using RNA-seq. Overall, this dissertation shed light on the complex structure, interaction and function of an important family of coral reef fish from the Red Sea through range of molecular techniques.
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Book chapters on the topic "Epulopiscium"

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Angert, Esther R. "The Enigmatic Cytoarchitecture of Epulopiscium spp." In Microbiology Monographs, 285–301. Berlin, Heidelberg: Springer Berlin Heidelberg, 2006. http://dx.doi.org/10.1007/7171_027.

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Journal articles
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