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Liu F, Marincowitz S, Chen S, Mbenoun M, Tsopelas P, Soulioti N, Wingfield MJ. Novel species of Huntiella from naturally-occurring forest trees in Greece and South Africa. MycoKeys 2020; 69:33-52. [PMID: 32733148 PMCID: PMC7367892 DOI: 10.3897/mycokeys.69.53205] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2020] [Accepted: 06/04/2020] [Indexed: 11/30/2022] Open
Abstract
Huntiella species are wood-infecting, filamentous ascomycetes that occur in fresh wounds on a wide variety of tree species. These fungi are mainly known as saprobes although some have been associated with disease symptoms. Six fungal isolates with typical culture characteristics of Huntiella spp. were collected from wounds on native forest trees in Greece and South Africa. The aim of this study was to identify these isolates, using morphological characters and multigene phylogenies of the rRNA internal transcribed spacer (ITS) region, portions of the β-tubulin (BT1) and translation elongation factor 1α (TEF-1α) genes. The mating strategies of these fungi were also determined through PCR amplification of mating type genes. The study revealed two new species; one from Platanus orientalis in Greece and one from Colophospermum mopane and Senegalia nigrescens in South Africa. These novel taxa have been provided with the names, H. hellenica sp. nov. and H. krugeri sp. nov., respectively. The former species was found to have a homothallic and the latter a heterothallic mating system.
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Affiliation(s)
- FeiFei Liu
- Department of Biochemistry, Genetics and Microbiology (BGM), Forestry and Agricultural Biotechnology Institute (FABI), University of Pretoria, Pretoria 0028, South AfricaUniversity of PretoriaPretoriaSouth Africa
- China Eucalypt Research Centre (CERC), Chinese Academy of Forestry (CAF), ZhanJiang, 524022, GuangDong Province, ChinaChinese Academy of ForestryGuangDongChina
| | - Seonju Marincowitz
- Department of Biochemistry, Genetics and Microbiology (BGM), Forestry and Agricultural Biotechnology Institute (FABI), University of Pretoria, Pretoria 0028, South AfricaUniversity of PretoriaPretoriaSouth Africa
| | - ShuaiFei Chen
- Department of Biochemistry, Genetics and Microbiology (BGM), Forestry and Agricultural Biotechnology Institute (FABI), University of Pretoria, Pretoria 0028, South AfricaUniversity of PretoriaPretoriaSouth Africa
- China Eucalypt Research Centre (CERC), Chinese Academy of Forestry (CAF), ZhanJiang, 524022, GuangDong Province, ChinaChinese Academy of ForestryGuangDongChina
| | - Michael Mbenoun
- Department of Biochemistry, Genetics and Microbiology (BGM), Forestry and Agricultural Biotechnology Institute (FABI), University of Pretoria, Pretoria 0028, South AfricaUniversity of PretoriaPretoriaSouth Africa
| | - Panaghiotis Tsopelas
- Institute of Mediterranean Forest Ecosystems, Terma Alkmanos, 11528 Athens, GreeceInstitute of Mediterranean Forest EcosystemsAthensGreece
| | - Nikoleta Soulioti
- Institute of Mediterranean Forest Ecosystems, Terma Alkmanos, 11528 Athens, GreeceInstitute of Mediterranean Forest EcosystemsAthensGreece
| | - Michael J. Wingfield
- Department of Biochemistry, Genetics and Microbiology (BGM), Forestry and Agricultural Biotechnology Institute (FABI), University of Pretoria, Pretoria 0028, South AfricaUniversity of PretoriaPretoriaSouth Africa
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Simpson MC, Coetzee MPA, van der Nest MA, Wingfield MJ, Wingfield BD. Ceratocystidaceae exhibit high levels of recombination at the mating-type (MAT) locus. Fungal Biol 2018; 122:1184-1191. [PMID: 30449356 DOI: 10.1016/j.funbio.2018.09.003] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2017] [Revised: 07/11/2018] [Accepted: 09/12/2018] [Indexed: 12/29/2022]
Abstract
Mating is central to many fungal life cycles and is controlled by genes at the mating-type (MAT) locus. These genes determine whether the fungus will be self-sterile (heterothallic) or self-fertile (homothallic). Species in the ascomycete family Ceratocystidaceae have different mating strategies, making them interesting to consider with regards to their MAT loci. The aim of this study was to compare the composition of the MAT locus flanking regions in 11 species of Ceratocystidaceae representing four genera. Genome assemblies for each species were examined to identify the MAT locus and determine the structure of the flanking regions. Large contigs containing the MAT locus were then functionally annotated and analysed for the presence of transposable elements. Genes typically flanking the MAT locus in sordariomycetes were found to be highly conserved in the Ceratocystidaceae. The different genera in the Ceratocystidaceae displayed little synteny outside of the immediate MAT locus flanking genes. Even though species ofCeratocystis did not show much synteny outside of the immediate MAT locus flanking genes, species of Huntiella and Endoconidiophora were comparatively syntenic. Due to the high number of transposable elements present in Ceratocystis MAT flanking regions, we hypothesise that Ceratocystis species may have undergone recombination in this region.
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Affiliation(s)
- Melissa C Simpson
- Department of Biochemistry, Genetics and Microbiology, Forestry and Agricultural Biotechnology Institute, University of Pretoria, Pretoria, 0002, South Africa.
| | - Martin P A Coetzee
- Department of Biochemistry, Genetics and Microbiology, Forestry and Agricultural Biotechnology Institute, University of Pretoria, Pretoria, 0002, South Africa.
| | - Magriet A van der Nest
- Department of Biochemistry, Genetics and Microbiology, Forestry and Agricultural Biotechnology Institute, University of Pretoria, Pretoria, 0002, South Africa.
| | - Michael J Wingfield
- Department of Biochemistry, Genetics and Microbiology, Forestry and Agricultural Biotechnology Institute, University of Pretoria, Pretoria, 0002, South Africa.
| | - Brenda D Wingfield
- Department of Biochemistry, Genetics and Microbiology, Forestry and Agricultural Biotechnology Institute, University of Pretoria, Pretoria, 0002, South Africa.
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Affiliation(s)
- P. W. J. Van Wyk
- Department of Botany and Genetics, University of the Orange Free State, Bloemfontein 9300, South Africa
| | - M. J. Wingfield
- Department of Microbiology and Biochemistry, University of the Orange Free State, Bloemfontein 9300, South Africa
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Van Wyk PWJ, Wingfield MJ. Ultrastructure of ascus arrangement and ascospore development inOphiostoma seticolle. Mycologia 2018. [DOI: 10.1080/00275514.1994.12026459] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- P. W. J. Van Wyk
- Department of Botany and Genetics, University of the Orange Free State, Bloemfontein, South Africa
| | - M. J. Wingfield
- Department of Microbiology and Biochemistry, University of the Orange Free State, Bloemfontein, South Africa
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Hausner G, Reid J, Klassen GR. Do Galeate-Ascospore Members of the Cephaloascaceae, Endomycetaceae and Ophiostomataceae Share a Common Phylogeny? Mycologia 2018. [DOI: 10.1080/00275514.1992.12026219] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Georg Hausner
- Department of Botany, University of Manitoba, Winnipeg, Manitoba R3T 2N2, Canada
| | - James Reid
- Department of Botany, University of Manitoba, Winnipeg, Manitoba R3T 2N2, Canada
| | - Glen R. Klassen
- Department of Microbiology, University of Manitoba, Winnipeg, Manitoba R3T 2N2, Canada
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Marais GJ, Wingfield MJ, Viljoen CD, Wingfield BD. A new ophiostomatoid genus from Protea infructescences. Mycologia 2018. [DOI: 10.1080/00275514.1998.12026890] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Gert J. Marais
- Department of Microbiology and Biochemistry, University of the Orange Free State, P. O. Box 339, Bloemfontein, 9300, South Africa
| | - Michael J. Wingfield
- Department of Microbiology and Biochemistry, University of the Orange Free State, P. O. Box 339, Bloemfontein, 9300, South Africa
| | - Christopher D. Viljoen
- Department of Microbiology and Biochemistry, University of the Orange Free State, P. O. Box 339, Bloemfontein, 9300, South Africa
| | - Brenda D. Wingfield
- Department of Microbiology and Biochemistry, University of the Orange Free State, P. O. Box 339, Bloemfontein, 9300, South Africa
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Affiliation(s)
- Steven Cassar
- Department of Botany, Louisiana State University, Baton Rouge, Louisiana 70803
| | - Meredith Blackwell
- Department of Botany, Louisiana State University, Baton Rouge, Louisiana 70803
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Tang AMC, Jeewon R, Hyde KD. Phylogenetic utility of protein (RPB2, β-tubulin) and ribosomal (LSU, SSU) gene sequences in the systematics of Sordariomycetes (Ascomycota, Fungi). Antonie van Leeuwenhoek 2006; 91:327-49. [PMID: 17072532 DOI: 10.1007/s10482-006-9120-8] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/09/2006] [Accepted: 09/15/2006] [Indexed: 10/24/2022]
Abstract
The Sordariomycetes is an important group of fungi whose taxonomic relationships and classification is obscure. There is presently no multi-gene molecular phylogeny that addresses evolutionary relationships among different classes and orders. In this study, phylogenetic analyses with a broad taxon sampling of the Sordariomycetes were conducted to evaluate the utility of four gene regions (LSU rDNA, SSU rDNA, beta-tubulin and RPB2) for inferring evolutionary relationships at different taxonomic ranks. Single and multi-gene genealogies inferred from Bayesian and Maximum Parsimony analyses were compared in individual and combined datasets. At the subclass level, SSU rDNA phylogenies demonstrate their utility as a marker to infer phylogenetic relationships at higher levels. All analyses with SSU rDNA alone, combined LSU rDNA and SSU rDNA, and the combined 28 S rDNA, SSU rDNA and RPB2 datasets resulted in three subclasses: Hypocreomycetidae, Sordariomycetidae and Xylariomycetidae, which correspond well to established morphological classification schemes. At the ordinal level, the best resolved phylogeny was obtained from the combined LSU rDNA and SSU rDNA datasets. Individually, the RPB2 gene dataset resulted in significantly higher number of parsimony informative characters. Our results supported the recent separation of Boliniaceae, Chaetosphaeriaceae and Coniochaetaceae from Sordariales and placement of Coronophorales in Hypocreomycetidae. Microascales was found to be paraphyletic and Ceratocystis is phylogenetically associated to Faurelina, while Microascus and Petriella formed another clade and basal to other members of Halosphaeriales. In addition, the order Lulworthiales does not appear to fit in any of the three subclasses. Congruence between morphological and molecular classification schemes is discussed.
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Affiliation(s)
- Alvin M C Tang
- Centre for Research in Fungal Diversity, Department of Ecology & Biodiversity, The University of Hong Kong, Hong Kong, SAR, Republic of China.
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Ophiostoma africanum sp. nov., and a key to ophiostomatoid species from Protea infructescences. ACTA ACUST UNITED AC 2001. [DOI: 10.1017/s0953756200003257] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Ting Au DW, Thomas Moss S, Gareth Jones EB, John Hodgkiss I. Characterization of the mucilage sheaths of Lemonniera aquatica by lectin-gold labelling. MYCOSCIENCE 1996. [DOI: 10.1007/bf02461344] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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de Beer C, van Wyk PW, Wingfield MJ, Kemp GH. The fine structure of ascospore shape and development in Ceratocystis fimbriata. Antonie Van Leeuwenhoek 1995; 67:325-32. [PMID: 7574547 DOI: 10.1007/bf00872930] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Ascospore development in Ceratocystis fimbriata Ell. & Halst. commenced in an eight-nucleate ascus. A single vesicle formed along the periphery of the ascus from fragments of ascospore delimiting membranes, surrounded all eight nuclei and eventually invaginated, first forming pouches with open ends, then finally enclosing each of the eight nuclei in a separate sac, thus delimiting ascospores. Pairing of the ascospores followed and brim formation occurred at the contact area between two ascospores. Osmiophilic bodies contributed to the formation of brim-like appendages by fusing to the ascospore walls. Additional brims were observed at opposite ends of the ascospores giving them a double-brimmed appearance.
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Affiliation(s)
- C de Beer
- Department of Microbiology and Biochemistry, University of Orange Free State, Bloemfontein, South Africa
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Schumacher TK, Kamaletdinova FI, Vassilyev AE. Ultrastructural observations on ascosporogenesis in Ciboria betulae (Helotiales : Sclerotiniaceae). ACTA ACUST UNITED AC 1995. [DOI: 10.1139/b95-024] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The ultrastructure of ascospore ontogeny including spore delimitation and spore wall formation is examined in Ciboria betulae. A peripheral delimiting cisterna is derived from the ascus plasmalemma apparently by the self-assembly of subunits in the cytosol. The cisterna is discontinuous and delimits each of eight incipient ascospores in the ascus. The particular, verrucose ascospore ornamentation in C. betulae appears early during primary wall formation. The electron-lucent primary wall differentiates into an endospore of finely fibrillar texture and a two-layered, fibrillar epispore. The ultrastructural changes of ascus epiplasm, sporoplasm, and spore wall are described and compared with previous studies on Ascomycetes. Key words: ascosporogenesis, ascospore ontogeny, Ciboria betulae, ascospore wall differentiation.
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Wingfield MJ, Van Wyk PS. A new species of Ophiostoma from Protea infructescences in South Africa. ACTA ACUST UNITED AC 1993. [DOI: 10.1016/s0953-7562(09)80152-4] [Citation(s) in RCA: 25] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Hausner G, Reid J, Klassen G. Ceratocystiopsis: a reappraisal based on molecular criteria. ACTA ACUST UNITED AC 1993. [DOI: 10.1016/s0953-7562(09)81188-x] [Citation(s) in RCA: 39] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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