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Multiple Cosmopolitan Ecotypes within a Microbial Eukaryote Morphospecies
Protist, 2006Microbial eukaryotes that are morphologically indistinguishable (i.e. 'morphospecies') tend to be genetically diverse. While most protist morphospecies have cosmopolitan distribution, it has been suggested that ribotypes (unique rRNA gene sequences) or rRNA sequence clusters do have biogeography and such clusters may correlate with particular (non ...
Finlay, B.J. +4 more
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Science, 2002
In his viewpoint “global dispersal of free-living microbial eukaryote species” (Environmental Microbiology Special Issue, 10 May, p. [1061][1]), B. J. Finlay suggests that there are a limited number of microbial eukaryote species (in the sense of recognizable morphologies) and that most of them are worldwide in distribution. The catch comes in assuming
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In his viewpoint “global dispersal of free-living microbial eukaryote species” (Environmental Microbiology Special Issue, 10 May, p. [1061][1]), B. J. Finlay suggests that there are a limited number of microbial eukaryote species (in the sense of recognizable morphologies) and that most of them are worldwide in distribution. The catch comes in assuming
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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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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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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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Horizontal Gene Transfer Between Microbial Eukaryotes
2009Comparative genomics have identified two loosely defined classes of genes: widely distributed core genes that encode proteins for central functions in the cell and accessory genes that are patchily distributed across lineages and encode taxa-specific functions.
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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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Transcriptomics and microbial eukaryote diversity: a way forward
Trends in Ecology & Evolution, 2012Recent reviews have pointed out the large proportion of microbial eukaryotic (protist) diversity that has yet to be described, and the enormous challenges that accompany its description [1]. The ∼100 000 species [2] of microbial eukaryotes may be significantly underestimated if we continue to discover increasing numbers of cryptic species.
Shauna A, Murray +2 more
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Reactive oxygen species and development in microbial eukaryotes
Trends in Microbiology, 2005Reactive oxygen species (ROS) have been regarded as inevitable harmful by-products of aerobic metabolism. Growing evidence, however, suggests that ROS play important physiological roles. This raises questions about the pathways that different groups of organisms use to produce and sense ROS.
Jesús, Aguirre +3 more
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RACE and RAGE Cloning in Parasitic Microbial Eukaryotes
2004Many gene-cloning strategies and gene survey often provide partial sequence data. To exploit the information from these partial sequences numerous PCR-based approaches have been developed to clone full-length open reading frames. These approaches can be successful using small quantities of cDNA or genomic DNA as starting material and avoid the need to ...
Bryony A P, Williams, Robert P, Hirt
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