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Studies on three rare coprophilous Plectomycetes from Italy.
No full textVolume: 124Start Page: 279End Page: 30
Rodentomyces, a new hypocrealean genus from Italy
No full textAn ascomycete with non stromatic, narrowly ovoidal or subpyriform, pale yellow to luteous perithecia, a Nectria-like centrum, yellowish-brown reticulate ascospores, and a Trichothecium-like anamorph has been isolated from small rodent dung in Italy. Based on morphological, cultural and molecular (nrLSU and ITS sequences) data, a new genus, Rodentomyces, and a new species, R. reticulatus, are therefore introduced to accommodate this fungus. Rodentomyces represents a hypocrealean genus in the Nectriaceae. Within this family, and based on molecular data, R. reticulatus is placed in the group including Calonectria, Leuconectria, Nectricladiella, Neonectria and Nectria mariannaeae. Several coprophilous genera are recorded in Hypocreales almost evenly distributed among the main families of this order
A comparative study of Neogymnomyces virgineus, a new keratinolytic species from dung, and its relationships with the Onygenales
No full textAbstract Isolations of onygenalean fungi were made recently
from different dung samples from Italy. A striking snowwhite
species with gymnothecial ascomata, developed in
damp chamber on dormouse dung collected in a cave, was
subjected to keratinolytic tests and morphological, cultural,
and phylogenetic studies. The keratinolytic ability of this
species, associated with a Chrysosporium anamorph and a
sexual state of appendiculate reticuloperidia and oblate
ascospores, allows it to be accomodated in Onygenaceae.
White ascomata, blunt or subcapitate peridial appendages,
pitted ascospores, and tuberculate conidia suggest it to be a
new Neogymnomyces, and this was confirmed by parsimony
analyses of LSU and ITS nrDNA sequences. Following
recent phylogenetic analyses, the morphological and physiological
features of order Onygenales and its families are re–
examined and discussed. After the introduction of a new
species, Neogymnomyces is reviewed and compared with all
other genera in Onygenaceae. The Chrysosporium imperfect
state of Neogymnomyces virgineus is described and compared
to the anamorph of N. demonbreunii. It is also
compared to the atypical Chrysosporium merdarium and to
several other Chrysosporium species with echinulate to
verrucose–tuberculate conidia, isolated from guano, dung,
and nitrogen–rich soils in caves. The onygenalean fungi
isolated from any kind of dung are discussed and their
facultative coprophily ascribed to variable faecal contents of
keratin or other degradable substances. A key to the families
and genera of the Onygenales is provided
A comparative study of Neogymnomyces virgineus, a new keratinolytic species from dung, and its relationships with the Onygenales
No full textIsolations of onygenalean fungi were made recently from different dung samples from Italy.. A striking snow-white species with gymnothecial ascomata, developed in damp chamber on dormouse dung collected in a cave, was subjected to keratinolytic tests and morphological, cultural, and phylogenetic studies. The keratinolytic ability of this species, associated with a Chrysosporium anamorph and a sexual state of appendiculate reticuloperidia and oblate ascospores, allows it to be accomodated in Onygenaceae. White ascomata, blunt or subcapitate peridial appendages, pitted ascospores, and tuberculate conidia suggest it to be a new Neogymnomyces, and this was confirmed by parsimony analyses of LSU and ITS nrDNA sequences. Following recent phylogenetic analyses, the morphological and physiological features of order Onygenales and its families are re–examined and discussed. After the introduction of a new species, Neogymnomyces is reviewed and compared with all other genera in Onygenaceae. The Chrysosporium imperfect state of Neogymnomyces virgineus is described and compared to the anamorph of N. demonbreunii. It is also compared to the atypical Chrysosporium merdarium and to several other Chrysosporium species with echinulate to verrucose–tuberculate conidia, isolated from guano, dung, and nitrogen–rich soils in caves. The onygenalean fungi isolated from any kind of dung are discussed and their facultative coprophily ascribed to variable faecal contents of keratin or other degradable substances. A key to the families and genera of the Onygenales is provided
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
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