Marine basidiomycetous yeasts (Rhodosporidium spp. n.) with tetrapolar and multiple allelic bipolar mating systems

1973 ◽  
Vol 19 (5) ◽  
pp. 643-657 ◽  
Author(s):  
Jack W. Fell ◽  
Ingrid L. Hunter ◽  
Adele S. Tallman
Keyword(s):  
Mating Systems ◽  
Taxonomic Status ◽  
Basidiomycetous Yeast ◽  
Basidiomycetous Yeasts ◽  
Formal Description

Studies of the mating systems of basidiomycetous yeasts from oceanic regions demonstrate that Rhodosporidium bisporidiis sp. n. and Rhodosporidium dacryoidum sp. n. have tetrapolar mating factors. Rhodosporidium infirmo-miniatum sp. n. is bipolar with three known alleles. The formal description of these three species is presented, as well as that of Rhodosporidium capitatum sp. n., a self-sporulating form. Rhodosporidium capitatum and Rhodosporidium bisporidiis are distinguished by the formation of basidia with terminal sporidia that develop on primary sporidia. The sporidia are not forcefully ejected. Rhodosporidium infirmo-miniatum has short basidia with terminal sporidia, but lacks primary sporidia. Rhodosporidium dacryoidum has two- to four-celled basidia with lateral sporidia. Rhodosporidium capitatum, Rhodosporidium infirmo-miniatum, and Rhodosporidium bisporidiis produce endospores. The taxonomic status of these species, and of the basidiomycetous yeast-like genera, is discussed.

scholarly journals Mrakia stelviica sp. nov. and Mrakia montana sp. nov., two novel basidiomycetous yeast species isolated from cold environments

2020 ◽  
Vol 70 (8) ◽  
pp. 4704-4713 ◽  
Author(s):  
Benedetta Turchetti ◽  
Ciro Sannino ◽  
Ambra Mezzasoma ◽  
Laura Zucconi ◽  
Silvano Onofri ◽  
...  
Keyword(s):  
Yeast Species ◽  
Novel Species ◽  
Phylogenetic Analyses ◽  
Intermediate Position ◽  
Basidiomycetous Yeast ◽  
Basidiomycetous Yeasts ◽  
Cold Environments ◽  
Yeast Strains ◽  
Unknown Species ◽  
Physiological Tests

Five yeast strains were isolated from soil and sediments collected from Alps and Apennines glaciers during sampling campaigns carried out in summer 2007 and 2017, respectively. Based on morphological and physiological tests and on phylogenetic analyses reconstructed with ITS and D1/D2 sequences, the five strains were considered to belong to two related but hitherto unknown species within the genus Mrakia, in an intermediate position between Mrakia cryoconiti and Mrakia arctica. The names Mrakia stelviica (holotype DBVPG 10734T) and Mrakia montana (holotype DBVPG 10736T) are proposed for the two novel species and a detailed description of their morphological, physiological and phylogenetic features are presented. Both species fermented glucose, sucrose and trehalose, which is an uncommon feature in basidiomycetous yeasts, and showed septate hyphae with teliospore formation.

The hydroid research of American naturalist Samuel F. Clarke, 1851–1928

1997 ◽  
Vol 24 (1) ◽  
pp. 19-36 ◽  
Author(s):  
DALE R. CALDER ◽  
LESTER D. STEPHENS
Keyword(s):  
Developmental Biology ◽  
Taxonomic Status ◽  
Doctoral Dissertation ◽  
Nominal Species ◽  
Marine Biological Laboratory ◽  
Spotted Salamander ◽  
Johns Hopkins University ◽  
American Naturalist ◽  
American Schools ◽  
American Society

Samuel Fessenden Clarke was the leading specialist on hydroids (phylum Cnidaria) in North America over the last quarter of the nineteenth century. During that period he published taxonomic papers on hydroids from both the Atlantic and Pacific coasts of the continent, from the Gulf of Mexico, and from the eastern Pacific off Central and South America. He also authored a section on hydrozoan biology for “The Riverside Natural History” series. Most of his papers on hydroids were published while he was in his twenties. Clarke described as new 61 nominal species, three nominal genera, and one nominal family, as well as two “varieties” of hydroids. A list of these, and their current taxonomic status, appears in the present work. Clarke consistently provided sound descriptions and locality data for all supposed new species, and drew accurate illustrations of most of them. His research on Hydrozoa, beyond alphataxonomy, was directed towards faunal distributions and the use of hydroid assemblages as biogeographic indicators. In addition to investigations on hydroids, Clarke carried out research on the developmental biology of amphibians and reptiles. His doctoral dissertation at Johns Hopkins University was based on the embryology of the “Spotted Salamander” (=Yellow-spotted Salamander), and he published a major paper on the habits and embryology of the American Alligator. Most of Clarke's career was devoted to academic duties at Williams College, Massachusetts, where he was recognized as a dedicated and inspiring teacher. He served the American Society of Naturalists in various capacities, including a term as its president, was an influential trustee of the Marine Biological Laboratory, Woods Hole, and promoted the study of science in American schools.

Notes on the molecular taxonomy of the Proclossiana eunomia complex (Lepidoptera, Nymphalidae: Argynnini): analysis of DNA barcodes

2018 ◽  
Vol 8 (1) ◽  
pp. 222-232 ◽  
Author(s):  
R. V. Yakovlev ◽  
N. A. Shapoval ◽  
G. N. Kuftina ◽  
A. V. Kulak ◽  
S. V. Kovalev
Keyword(s):  
Body Size ◽  
Molecular Taxonomy ◽  
Taxonomic Status ◽  
Molecular Data ◽  
Coi Gene ◽  
Wing Pattern ◽  
Molecular Approach ◽  
Dna Barcodes ◽  
Morphological Differences ◽  
Proclossiana Eunomia

The Proclossiana eunomia (Esper, 1799) complex is currently composed of the several subspecies distributed throughout Palaearсtic region and North America. Despite the fact that some of the taxa have differences in wing pattern and body size, previous assumptions on taxonomy not supported by molecular data. Therefore, the identity of certain populations of this complex has remained unclear and the taxonomic status of several recently described taxa is debated. Here, we provide insights into systematics of some Palaearctic members of this group using molecular approach, based on the analysis of the barcoding fragment of the COI gene taking into account known morphological differences.

The Taxonomic Status and Distribution Range of Six Theloderma Species (Anura: Rhacophoridae) with a New Record in China

2017 ◽  
Vol 24 (2) ◽  
pp. 99 ◽  
Author(s):  
Hou Mian ◽  
Yu Guo-hua ◽  
Chen Hong-man ◽  
Liao Chang-le ◽  
Zhang Li ◽  
...  
Keyword(s):  
New Record ◽  
Taxonomic Status ◽  
Distribution Range

On three unpublished lectotype designations and on the status and positions of Kreizbergius simo-group taxa (Lepidoptera, Papilionidae)

2018 ◽  
Vol 69 (2) ◽  
pp. 98-106
Author(s):  
Stanislav K. Korb
Keyword(s):  
Taxonomic Status ◽  
New Synonyms ◽  
The Status

The taxonomic status and positions of taxa described within the genus Kreizbergius Korshunov, 1990 (the simo-group sensu Ackery, 1975) are rearranged. Lectotypes of the following taxa are designated: Parnassius simo var. simonius Staudinger, 1889, Parnassius simo var. simulator Staudinger, 1889, Parnassius gylippos Fruhstorfer, 1903, Parnassius simo confusa Bang-Haas, 1927. It is shown that K. anrdeji (Eisner, 1930) is a subspecies of K. simonius and has the oldest available name K. simonius kozlovi Avinov, 1913. New synonyms within K. simo and K. simonius are established.

Cuticular structures in the copulatory apparatus of Planorbis planorbis (Linnaeus, 1758) (Gastropoda: Pulmonata: Planorbidae)

2009 ◽  
Vol 18 (1) ◽  
pp. 11-16
Author(s):  
E.V. Soldatenko ◽  
A.A. Petrov
Keyword(s):  
Light Microscopy ◽  
Confocal Laser Scanning Microscopy ◽  
Laser Scanning ◽  
Taxonomic Status ◽  
Laser Scanning Microscopy ◽  
Confocal Laser Scanning ◽  
Confocal Laser ◽  
Copulatory Apparatus ◽  
The Family ◽  
Cuticular Structures

The morphology of the copulatory apparatus and associated cuticular structures in Planorbis planorbis was studied by light microscopy, SEM, TEM and confocal laser scanning microscopy. The significance of these cuticular structures for the taxonomic status of the species and for the systematics of the family Planorbidae in general is discussed.

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