Publications

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preliminary observations on the holdfast of amoebidium parasiticum. 19685700456
pure culture of the trichomycete, amoebidium parasiticum. 196013844311
developmental control of amoebidium parasiticum. 19685661080
intermediary metabolism in protists: a sequence-based view of facultative anaerobic metabolism in evolutionarily diverse eukaryotes.protists account for the bulk of eukaryotic diversity. through studies of gene and especially genome sequences the molecular basis for this diversity can be determined. evident from genome sequencing are examples of versatile metabolism that go far beyond the canonical pathways described for eukaryotes in textbooks. in the last 2-3 years, genome sequencing and transcript profiling has unveiled several examples of heterotrophic and phototrophic protists that are unexpectedly well-equipped for atp ...201021036663
do we need many genes for phylogenetic inference?fifty-six nuclear protein coding genes from taxonomically broad est database and other databases were selected for phylogenomic-based examination of alternative phylogenetic hypotheses concerning intergroup relationship between multicellular animals (metazoa) and other representatives of opisthokonta. the results of this work support sister group relationship between metazoa and choanoflagellata. both of these groups form the taxon holozoa along with the monophyletic ichthyosporea or mesomycetoz ...200718205615
a phylogenomic investigation into the origin of metazoa.the evolution of multicellular animals (metazoa) from their unicellular ancestors was a key transition that was accompanied by the emergence and diversification of gene families associated with multicellularity. to clarify the timing and order of specific events in this transition, we conducted expressed sequence tag surveys on 4 putative protistan relatives of metazoa including the choanoflagellate monosiga ovata, the ichthyosporeans sphaeroforma arctica and amoebidium parasiticum, and the amoe ...200818184723
eccrinales (trichomycetes) are not fungi, but a clade of protists at the early divergence of animals and fungi.the morphologically diverse orders eccrinales and amoebidiales have been considered members of the fungal class trichomycetes (zygomycota) for the last 50 years. these organisms either inhabit the gut or are ectocommensals on the exoskeleton of a wide range of arthropods--crustacea, insecta, and diplopoda--in varied habitats. the taxonomy of both orders is based on a few micromorphological characters. one species, amoebidium parasiticum, has been axenically cultured and this has permitted severa ...200515737579
first report of basidiolum fimbriatum since 1861, with comments on its development, occurrence, distribution and relationship with other fungi.an obscure parasitic fungus, basidiolum fimbriatum, was found on amoebidium parasiticum (amoebidiales) associated with caenis sp. (mayfly) nymphs, during a survey of gut fungi (trichomycetes) from a small stream in northeastern kansas, usa. the hindguts of the nymphs harboured a species of legeriomycetaceae and paramoebidium sp. this is the first report of the ectocommensal protozoan, a. parasiticum, associated with the gills of caenidae (ephemeroptera), and of b. fimbriatum in the 142 years sin ...200312747337
unique mitochondrial genome architecture in unicellular relatives of animals.animal mtdnas are typically small (approximately 16 kbp), circular-mapping molecules that encode 37 or fewer tightly packed genes. here we investigate whether similarly compact mitochondrial genomes are also present in the closest unicellular relatives of animals, i.e., choanoflagellate and ichthyosporean protists. we find that the gene content and architecture of the mitochondrial genomes of the choanoflagellate monosiga brevicollis, the ichthyosporean amoebidium parasiticum, and metazoa are ra ...200312552117
the closest unicellular relatives of animals.molecular phylogenies support a common ancestry between animals (metazoa) and fungi, but the evolutionary descent of the metazoa from single-celled eukaryotes (protists) and the nature and taxonomic affiliation of these ancestral protists remain elusive. we addressed this question by sequencing complete mitochondrial genomes from taxonomically diverse protists to generate a large body of molecular data for phylogenetic analyses. trees inferred from multiple concatenated mitochondrial protein seq ...200212401173
hyaloraphidium curvatum is not a green alga, but a lower fungus; amoebidium parasiticum is not a fungus, but a member of the drips.the unicellular heterotrophic protist hyaloraphidium is classified with a family of green algae, the ankistrodesmaceae. the only species that exists in pure culture and that is available for taxonomic studies is h. curvatum. comparative 18s ribosomal rna sequence analyses showed that h. curvatum belongs to the fungi rather than to the algae. within the fungi, h. curvatum preferentially clustered with chytridiomycetes. unlike chytridiomycetes, h. curvatum propagates by autosporulation, and the pr ...200011079770
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