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Genome diversity in microbial eukaryotes
Trends in Ecology & Evolution, 2004The genomic peculiarities among microbial eukaryotes challenge the conventional wisdom of genome evolution. Currently, many studies and textbooks explore principles of genome evolution from a limited number of eukaryotic lineages, focusing often on only a few representative species of plants, animals and fungi. Increasing emphasis on studies of genomes
Casey L, McGrath, Laura A, Katz
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Energetics and evolution of anaerobic microbial eukaryotes
Nature Microbiology, 2023Mitochondria and aerobic respiration have been suggested to be required for the evolution of eukaryotic cell complexity. Aerobic respiration is several times more energetically efficient than fermentation. Moreover, aerobic respiration occurs at internalized mitochondrial membranes that are not constrained by a sublinear scaling with cell volume ...
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2013
A bioinformatics survey of about 120 protist and 240 fungal genomes and transcriptomes revealed a broad array of globins, representing five of the eight subfamilies identified in bacteria. Most conspicuous is the absence of protoglobins and globin-coupled sensors, except for a two-domain globin in Leishmanias, that comprises a nucleotidyl cyclase ...
Serge N, Vinogradov +5 more
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A bioinformatics survey of about 120 protist and 240 fungal genomes and transcriptomes revealed a broad array of globins, representing five of the eight subfamilies identified in bacteria. Most conspicuous is the absence of protoglobins and globin-coupled sensors, except for a two-domain globin in Leishmanias, that comprises a nucleotidyl cyclase ...
Serge N, Vinogradov +5 more
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Spatial scaling of microbial eukaryote diversity
Nature, 2004Patterns in the spatial distribution of organisms provide important information about mechanisms that regulate the diversity of life and the complexity of ecosystems. Although microorganisms may comprise much of the Earth's biodiversity and have critical roles in biogeochemistry and ecosystem functioning, little is known about their spatial ...
Jessica L, Green +7 more
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Acidocalcisomes: Ultrastructure, Biogenesis, and Distribution in Microbial Eukaryotes
Protist, 2019Acidocalcisomes are membrane-enclosed organelles with acidic lumens that accumulate polyphosphate, often in granular form, and sequester calcium and metals. They carry a transmembrane polyphosphate polymerase and two classes of proton pumps: H+-pyrophosphatases (H+-PPases) and V-type ATPases.
Ursula, Goodenough +4 more
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Cosmopolitanism of microbial eukaryotes in the global deep seas
Molecular Ecology, 2012Deep sea environments cover more than 65% of the earth’s surface and fulfil a range of ecosystem functions, yet they are also amongst the least known habitats on earth. Whilst the discovery of key geological processes, combined with technological developments, has focused interest onto geologically active areas such as hydrothermal vents, most abyssal ...
Simon, Creer, Frederic, Sinniger
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Unveiling new microbial eukaryotes in the surface ocean
Current Opinion in Microbiology, 2008A decade after molecular techniques were used to discover novel bacteria and archaea in the oceans, the same approach has revealed a wealth of new marine eukaryotic microbes. The approach has been particularly successful with the smallest eukaryotes, where morphological and culture approaches frequently fail. Analysis of samples from the surface ocean,
Massana, Ramon, Pedrós-Alió, Carlos
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Microbial Eukaryotes in the Marine Subsurface?
2011Marine sediments cover more than two-thirds of the Earth’s surface and have been estimated to contain as much as one-third of Earth’s prokaryotic biomass (Whitman et al. 1998). Despite this, relatively little is known about this deep biosphere, and essentially nothing is known about the presence of microbial eukaryotes (protists) in sediments deeper ...
Virginia P. Edgcomb, Jennifer F. Biddle
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Secretive ciliates and putative asexuality in microbial eukaryotes
Trends in Microbiology, 2010Facultative sexuality is assumed to have occurred in the ancestor of all extant eukaryotes, but the distribution and maintenance of sex among microbial eukaryotes is still under debate. In this paper, we address the purported asexuality in colpodean ciliates as an exemplary lineage. Colpodeans are a primarily terrestrial clade thought to have arisen up
Micah, Dunthorn, Laura A, Katz
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Gene Transfer and Diversification of Microbial Eukaryotes
Annual Review of Microbiology, 2009The importance of lateral gene transfer in genome evolution of microbial eukaryotes is slowly being appreciated. Acquisitions of genes have led to metabolic adaptation in diverse eukaryotic lineages. In most cases the metabolic genes have originated from prokaryotes, often followed by sequential transfers between eukaryotes.
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