Morphological, cultural, and biodestructive peculiarities of Chaetomium species

Прохоров, В. П.; Linnik, M. A.

doi:10.3103/s0096392511030072

Cited by 12 publications

(7 citation statements)

References 26 publications

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“…In contrast to C. ramosissimum , C. elatum and C. cochliodes ceased their growth at 35°C. For C. elatum this observation is in agreement with previous studies (Asgari and Zare 2011; Prokhorov and Linnik 2011). The isolates of C. globosum were able to grow at 35°C in our study, but growth was strongly restricted compared to the other temperatures employed.…”

Section: Discussionsupporting

confidence: 93%

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Characterization of cultural traits and fungicidal activity of strains belonging to the fungal genus Chaetomium

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Jacob

Zink

et al. 2020

J. Appl. Microbiol.

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Compare and characterize Chaetomium strains with special regard to their potentialities as biocontrol agents. Methods and results: Twelve strains of the fungal genus Chaetomium from diverse ecological niches were identified as belonging to six different species. Large differences were observed between the strains with regard to temperature requirements for mycelial growth and pigmentation of culture filtrates. Culture filtrates and ethyl acetate extracts were assayed for fungicidal effects against important phytopathogens both on agar media and in multiwell plates. The samples from C. globosum were particularly active against Botrytis cinerea, Pyrenophora graminea and Bipolaris sorokiniana, while those from C. cochliodes and C. aureum were inhibitory towards Phytophthora infestans, and P. infestans and Fusarium culmorum, respectively. In order to narrow down the active principle, the most promising extracts were separated by preparative HPLC and the resulting fractions tested in bioassays. Chaetoglobosins were identified as active compounds produced by C. globosum. Conclusions: The bioassays revealed C. aureum and C. cochliodes as promising candidates for use in biocontrol. Both showed remarkably good activity against the prominent plant pathogen P. infestans.

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Section: Discussionsupporting

confidence: 93%

“…Most Chaetomium species are mesophilic, with an optimal temperature range of 25 -28 °C (Prokhorov and Linnik 2011). Among the incubation temperatures tested, 35 °C was the optimum for C. ramosissimum.…”

Section: Discussionmentioning

confidence: 99%

Characterization of cultural traits and fungicidal activity of strains belonging to the fungal genus Chaetomium

Linkies

Jacob

Zink

et al. 2020

J. Appl. Microbiol.

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“…Additionally, 1 ml·L −1 of the trace elements solution containing Na 2 B 4 O 7 ·10H 2 O (100 mg·L −1 ), MnSO 4 (50 mg·L −1 ), CuSO 4 ·5H 2 O (250 mg·L −1 ), and Na 2 MoO 4 ·2H 2 O (50 mg·L −1 ) was added (Bizukojc & Ledakowicz, ; Casas Lopez et al., ). The use of lactose as a carbon source for C. globosum was previously verified by Prokhorov and Linnik (). For P. rubens ATCC 9178 (originally deposited in ATCC as Penicillium notatum ), this medium was modified with regard to the carbon sources and contained lactose (7.5 g l −1 ) and glucose (7.5 g·L −1 ), as glucose is a preferable substrate in the early stages of P. rubens growth (Koffler, Emerson, Perlman, & Burris, ).…”

Section: Methodsmentioning

confidence: 86%

Morphological evolution of various fungal species in the presence and absence of aluminum oxide microparticles: Comparative and quantitative insights into microparticle‐enhanced cultivation (MPEC)

2018

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The application of microparticle‐enhanced cultivation (MPEC) is an attractive method to control mycelial morphology, and thus enhance the production of metabolites and enzymes in the submerged cultivations of filamentous fungi. Unfortunately, most literature data deals with the spore‐agglomerating species like aspergilli. Therefore, the detailed quantitative study of the morphological evolution of four different fungal species (Aspergillus terreus, Penicillium rubens, Chaetomium globosum, and Mucor racemosus) based on the digital analysis of microscopic images was presented in this paper. In accordance with the current knowledge, these species exhibit different mechanisms of agglomerates formation. The standard submerged shake flask cultivations (as a reference) and MPEC involving 10 μm aluminum oxide microparticles (6 g·L−1) were performed. The morphological parameters, including mean projected area, elongation, roughness, and morphology number were determined for the mycelial objects within the first 24 hr of growth. It occurred that heretofore observed and widely discussed effect of microparticles on fungi, namely the decrease in pellet size, was not observed for the species whose pellet formation mechanism is different from spore agglomeration. In the MPEC, C. globosum developed core‐shell pellets, and M. racemosus, a nonagglomerative species, formed the relatively larger, compared to standard cultures, pellets with distinct cores.

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“…Chaetomium globosum sensu Von Arx is reported to be cosmopolitan, and occurs in a great variety of environments which include soil, dung, a wide variety of plant materials and other cellulose-rich substrates, as well as in air and marine environments ( Ames 1963 , Carter 1982 , Kopytina 2005 , Momesso et al 2008 , Kharwar et al 2011 , Yamada et al 2012 ). This species is also well known for its cellulolytic ability, having potential use in biodegradation of waste plant material and other industrial applications ( Umikalsom et al 1998 , El-Gindy et al 2003 , Ahammed et al 2008 , Prokhorov & Linnik 2011 , Longoni et al 2012 , Singh et al 2013 , Sharma et al 2014 ). In order to adapt to diverse environments, C. globosum is capable of producing various enzymes and secondary metabolites, displaying a wide range of biological activities.…”

Section: Introductionmentioning

confidence: 99%

Phylogenetic reassessment of the <I>Chaetomium globosum</I> species complex

Wang¹,

Lombard²,

Groenewald³

et al. 2016

Pers - Int Mycol J

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Chaetomium globosum, the type species of the genus, is ubiquitous, occurring on a wide variety of substrates, in air and in marine environments. This species is recognised as a cellulolytic and/or endophytic fungus. It is also known as a source of secondary metabolites with various biological activities, having great potential in the agricultural, medicinal and industrial fields. On the negative side, C. globosum has been reported as an air contaminant causing adverse health effects and as causal agent of human fungal infections. However, the taxonomic status of C. globosum is still poorly understood. The contemporary species concept for this fungus includes a broadly defined morphological diversity as well as a large number of synonymies with limited phylogenetic evidence. The aim of this study is, therefore, to resolve the phylogenetic limits of C. globosum s.str. and related species. Screening of isolates in the collections of the CBS-KNAW Fungal Biodiversity Centre (The Netherlands) and the China General Microbiological Culture Collection Centre (China) resulted in recognising 80 representative isolates of the C. globosum species complex. Thirty-six species are identified based on phylogenetic inference of six loci, supported by typical morphological characters, mainly ascospore shape. Of these, 12 species are newly described here. Additionally, C. cruentum, C. mollipilium, C. rectum, C. subterraneum and two varieties of C. globosum are synonymised under C. globosum s.str., and six species are resurrected, i.e. C. angustispirale, C. coarctatum, C. cochliodes, C. olivaceum, C. spiculipilium and C. subglobosum. Chaetomium ascotrichoides is segregated from C. madrasense and the genus name Chaetomidium is rejected. Five species, including C. globosum s.str., are typified here to stabilise their taxonomic status. A further evaluation of the six loci used in this study as potential barcodes indicated that the 28S large subunit (LSU) nrDNA and the internal transcribed spacer regions and intervening 5.8S nrRNA (ITS) gene regions were unreliable to resolve species, whereas β-tubulin (tub2) and RNA polymerase II second largest subunit (rpb2) showed the greatest promise as DNA barcodes for differentiating Chaetomium species. This study provides a starting point to establish a more robust classification system for Chaetomium and for the Chaetomiaceae.

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Morphological, cultural, and biodestructive peculiarities of Chaetomium species

Cited by 12 publications

References 26 publications

Characterization of cultural traits and fungicidal activity of strains belonging to the fungal genus Chaetomium

Characterization of cultural traits and fungicidal activity of strains belonging to the fungal genus Chaetomium

Morphological evolution of various fungal species in the presence and absence of aluminum oxide microparticles: Comparative and quantitative insights into microparticle‐enhanced cultivation (MPEC)

Phylogenetic reassessment of the <I>Chaetomium globosum</I> species complex

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