Observations on Thamnidiaceae (Mucorales). New Taxa, New Combinations, and Notes on Selected Species

Benny, Gerald L.; Benjamin, R. K.

doi:10.5642/aliso.19750803.10

Cited by 54 publications

(36 citation statements)

References 14 publications

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“…Mirza, S.M. Khan, S. Begum & Shagufta], were isolated only from animal dung, particularly rodents (Benny and Benjamin, 1975). Thus, this represents the first record of the genus in soil.…”

Section: Discussionmentioning

confidence: 99%

Mucorales from the semiarid of Pernambuco, Brazil

Santiago¹,

Santos²,

Maia³

2013

Braz. J. Microbiol.

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Nineteen taxa of Mucorales, belonging to Absidia, Apophysomyces, Cunninghamella, Fennellomyces, Lichtheimia, Mucor, Mycotypha, Rhizopus and Syncephalastrum were isolated from 36 composite soil samples in three semiarid areas in the State of Pernambuco (Triunfo, Cabrobó and Belém de São Francisco), Northeast Brazil, which are characterized by Caatinga vegetation. Triunfo is preserved, whereas Cabroró and Belém de São Francisco are experiencing low and severe desertification processes, respectively. Mucorales were isolated in Petri dishes in triplicate from 5 mg samples of soil placed on the surface of wheat germ agar plus chloramphenicol and Cercobin [Dimethyl 4,49-(103 phenylene) bis (3-thioallophanate)] medium. The plates were left on a bench at room temperature (28 ± 2 °C) for 72 h of alternating dark and light periods. Absidia cylindrospora presented the highest amount of CFU/g of soil, followed by L. hyalospora, C. phaeospora and C. echinulata var. echinulata. The latter, and R. microsporus var. microsporus, presented the highest frequencies of occurrence. Soils from Triunfo showed higher diversity of Mucorales than the samples from the other areas, although without differing statistically in relation to species richness. The communities of Mucorales from the degraded areas were more similar, while that from the preserved area was quite different. Most of the identified specimens have been commonly isolated from soil in other Brazilian regions, which indicates that they are not endemic of the semiarid. Eleven taxa are registered for the first time in this ecosystem, while F. heterothallicus is reported for the first time in Brazil.

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“…Mirza, S.M. Khan, S. Begum & Shagufta], were isolated only from animal dung, particularly rodents (Benny and Benjamin, 1975). Thus, this represents the first record of the genus in soil.…”

Section: Discussionmentioning

confidence: 99%

Mucorales from the semiarid of Pernambuco, Brazil

Santiago¹,

Santos²,

Maia³

2013

Braz. J. Microbiol.

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“…Our results pointed out that Thamnostylum piriforme was the commonest species (100% frequency). According to Benny and Benjamin (5) this taxa occurs most commonly in excrement, but can be found in soil and organic matter undergoing decomposition.…”

Section: Discussionmentioning

confidence: 99%

Zygomycetes from herbivore dung in the ecological reserve of Dois Irmãos, Northeast Brazil

Santiago¹,

Trufem²,

Malosso³

et al. 2011

Braz. J. Microbiol.

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Thirty-eight taxa of Zygomycetes distributed in 15 genera were recorded from tapir (Tapirus terrestris), camel (Camelus bactrianus), horse (Equus caballus), deer (Cervus elaphus), agouti (Dasyprocta aguti), donkey (Equus asinus), llama (Llama glama) and waterbuck (Kobus ellipsiprymnus) dung collected at the Reserva Ecológica de Dois Irmãos located in Recife, State of Pernambuco, Northeast Brazil. The samples were collected on a monthly basis from June 2005 to May 2006, taken to the laboratory and incubated in moist chambers. Higher number of taxa was observed in the excrements of tapir, followed by deer and donkey. The highest number of species was detected for Mucor, followed by Pilobolus. Statistical analyses showed significant differences in richness of Zygomycetes taxa between the herbivore dung types. Differences of species composition, however, were weak. Seasonality influenced the Zygomycetes species composition but not its richness. Variations in taxa composition between ruminants and non-ruminants dung were non significant.

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“…in colder regions are related to clinical isolates and might refer to imported clinical cases. Other taxa have been isolated from restricted areas: e.g., Lichtheimia sphaerocystis is only known in India, Ellisomyces anomalus has only been found in California, despite being widely distributed there [141], and Radiomyces species have been only isolated from California and Mexico [142]. A better understanding of the biology of the opportunists, including their natural niches, reservoirs, dispersal, and geographic distribution, is a prerequisite for understanding the route of acquisition and consequently for the prevention of infections.…”

Section: Ecology and Geographic Distributionmentioning

confidence: 99%

Updates on the Taxonomy of Mucorales with an Emphasis on Clinically Important Taxa

Walther

Wagner

Kurzai

2019

JoF

149

125

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Fungi of the order Mucorales colonize all kinds of wet, organic materials and represent a permanent part of the human environment. They are economically important as fermenting agents of soybean products and producers of enzymes, but also as plant parasites and spoilage organisms. Several taxa cause life-threatening infections, predominantly in patients with impaired immunity. The order Mucorales has now been assigned to the phylum Mucoromycota and is comprised of 261 species in 55 genera. Of these accepted species, 38 have been reported to cause infections in humans, as a clinical entity known as mucormycosis. Due to molecular phylogenetic studies, the taxonomy of the order has changed widely during the last years. Characteristics such as homothallism, the shape of the suspensors, or the formation of sporangiola are shown to be not taxonomically relevant. Several genera including Absidia, Backusella, Circinella, Mucor, and Rhizomucor have been amended and their revisions are summarized in this review. Medically important species that have been affected by recent changes include Lichtheimia corymbifera, Mucor circinelloides, and Rhizopus microsporus. The species concept of Rhizopus arrhizus (syn. R. oryzae) is still a matter of debate. Currently, species identification of the Mucorales is best performed by sequencing of the internal transcribed spacer (ITS) region. Ecologically, the Mucorales represent a diverse group but for the majority of taxa, the ecological role and the geographic distribution remain unknown. Understanding the biology of these opportunistic fungal pathogens is a prerequisite for the prevention of infections, and, consequently, studies on the ecology of the Mucorales are urgently needed.

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Observations on Thamnidiaceae (Mucorales). New Taxa, New Combinations, and Notes on Selected Species

Abstract: SUMMARYThe Thamnidiaceae is defin ed and six of the 13 genera included in the family by the authors are discussed. Thfrteen species are d escdbed and illustrated as follows

Cited by 54 publications

References 14 publications

Mucorales from the semiarid of Pernambuco, Brazil

Mucorales from the semiarid of Pernambuco, Brazil

Zygomycetes from herbivore dung in the ecological reserve of Dois Irmãos, Northeast Brazil

Updates on the Taxonomy of Mucorales with an Emphasis on Clinically Important Taxa

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