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Article: Five new Camillea (Xylariales) species described from French Guiana.

Fournier, Jacques / Hsieh, Huei-Mei / Lechat, Christian / Ju, Yu-Ming / Chaduli, Delphine / Favel, Anne

2023 Volume 64, Issue 1, Page(s) 31

Abstract: Background: The genus Camillea was created in 1849 from collections made in French Guiana with eight species included. Numerous species assigned to Camillea were subsequently discovered, especially in the forests of the Amazon basin, but new discoveries ...

Abstract	Background: The genus Camillea was created in 1849 from collections made in French Guiana with eight species included. Numerous species assigned to Camillea were subsequently discovered, especially in the forests of the Amazon basin, but new discoveries have not been reported from French Guiana since 1849. Recent fieldwork in French Guiana has begun to fill this gap by identifying five new species, most of which were collected in the vicinity of Saül village. Results: Based on macro- and micromorphological study of their stromata, including SEM images of ascospore wall ornamentation, five new species were recognized, including C. cribellum, C. heterostomoides, C. nitida, C. rogersii and C. saulensis. Cultures could be obtained for C. heterostomoides and C. rogersii, and ITS and LSU sequences were obtained for all of the five new species. Camillea heterostoma and its variety microspora were shown to be conspecific. Provisional molecular phylogenetic analyses support the possible reinstatement of Hypoxylon melanaspis, currently regarded as merely an applanate form of C. leprieurii. Conclusion: The current study is based on a relatively limited fieldwork in its duration and sampling area but was able to substantially increase the number of Camillea species known from French Guiana. This augurs an exceptional and still unknown diversity of the genus in this area and by extension in the adjacent neotropical forests.
Language	English
Publishing date	2023-10-28
Publishing country	England
Document type	Journal Article
ZDB-ID	2432110-2
ISSN	1999-3110 ; 1817-406X
ISSN (online)	1999-3110
ISSN	1817-406X
DOI	10.1186/s40529-023-00397-6
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article: Paecilosetin Derivatives as Potent Antimicrobial Agents from Isaria farinosa

Brel, Orianne / Touré, Seindé / Levasseur, Marceau / Lechat, Christian / Pellissier, Léonie / Wolfender, Jean-Luc / Van-Elslande, Elsa / Litaudon, Marc / Dusfour, Isabelle / Stien, Didier / Eparvier, Véronique

Journal of natural products. 2020 Oct. 06, v. 83, no. 10

2020

Abstract: Fifty-seven entomopathogenic microorganisms were screened against human pathogens and subjected to mass spectrometry molecular networking based dereplication. Isaria farinosa BSNB-1250, shown to produce potentially novel biologically active metabolites, ... ...

Abstract	Fifty-seven entomopathogenic microorganisms were screened against human pathogens and subjected to mass spectrometry molecular networking based dereplication. Isaria farinosa BSNB-1250, shown to produce potentially novel biologically active metabolites, was grown on a large scale on potato dextrose agar, and paecilosetin (1) and five new analogues (2–6) were subsequently isolated. The structures of the new compounds were elucidated using 1D and 2D NMR. The absolute configurations of compounds 1–6 were determined using Mosher ester derivatives (1, 3, 4), comparison of experimental and calculated ECD spectra (2–4 and 6), and single-crystal X-ray diffraction analysis (5). Compounds 1 and 5 exhibited strong antibacterial activity against MSSA and MRSA with MIC values of 1–2 μg/mL.
Keywords	Isaria farinosa ; X-ray diffraction ; antibacterial properties ; culture media ; humans ; mass spectrometry ; metabolites ; methicillin-resistant Staphylococcus aureus
Language	English
Dates of publication	2020-1006
Size	p. 2915-2922.
Publishing place	American Chemical Society and American Society of Pharmacognosy
Document type	Article
Note	NAL-AP-2-clean
ZDB-ID	304325-3
ISSN	1520-6025 ; 0163-3864
ISSN (online)	1520-6025
ISSN	0163-3864
DOI	10.1021/acs.jnatprod.0c00444
Database	NAL-Catalogue (AGRICOLA)

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Article: The rise and fall of Sarawakus (Hypocreaceae, Ascomycota)

Jaklitsch, Walter M / Lechat, Christian / Voglmayr, Hermann

Mycologia. 2014 Jan. 1, v. 106, no. 1

2014

Abstract: Species of Sarawakus are rarely encountered. Their teleomorphs resemble sexual stages of Trichoderma, formerly called Hypocrea, but differ from that genus by unicellular ascospores. The two green-spored species S. britannicus and the type species of ... ...

Abstract	Species of Sarawakus are rarely encountered. Their teleomorphs resemble sexual stages of Trichoderma, formerly called Hypocrea, but differ from that genus by unicellular ascospores. The two green-spored species S. britannicus and the type species of Sarawakus, S. lycogaloides, recently were collected, compared with their types and cultured. We redescribe and illustrate these species and transfer them to Trichoderma, based on phylogenetic analysis of the translation elongation factor 1-alpha encoding gene (tef1), containing the two last introns and exon, and a part of the rpb2 gene, encoding the second largest RNA polymerase subunit. Trichoderma lycogaloides, was found to cluster with Hypocrea sulawesensis, an unusual species of Trichoderma, while T. britannicum is closely related to T. aerugineum of the Spinulosa clade. The anamorphs of the two examined species are characterized by (odd) verticillium-like conidiophores, large cylindrical phialides and conidia, which belong to the largest of those species forming green conidia, oval to subglobose in T. lycogaloides and oblong in T. britannicum. All species currently recognized in Sarawakus are transferred to Trichoderma, introducing the new combinations T. fragile, T. hexasporum, T. izawae, T. sordidum, T. subtrachycarpum, T. succisum and T. trachycarpum and the new name T. rosellum. Trichoderma trachycarpum is redescribed and illustrated from an isotype.
Keywords	DNA-directed RNA polymerase ; Trichoderma ; anamorphs ; ascospores ; conidia ; conidiophores ; exons ; introns ; nomen novum ; peptide elongation factors ; phylogeny ; teleomorphs
Language	English
Dates of publication	2014-0101
Size	p. 133-144.
Publishing place	Taylor & Francis
Document type	Article
Note	NAL-AP-2-clean
ZDB-ID	281335-x
ISSN	1557-2536 ; 0027-5514
ISSN (online)	1557-2536
ISSN	0027-5514
DOI	10.3852/13-117
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Article: The rise and fall of Sarawakus (Hypocreaceae, Ascomycota).

Jaklitsch, Walter M / Lechat, Christian / Voglmayr, Hermann

Mycologia

2014 Volume 106, Issue 1, Page(s) 133–144

Abstract	Species of Sarawakus are rarely encountered. Their teleomorphs resemble sexual stages of Trichoderma, formerly called Hypocrea, but differ from that genus by unicellular ascospores. The two green-spored species S. britannicus and the type species of Sarawakus, S. lycogaloides, recently were collected, compared with their types and cultured. We redescribe and illustrate these species and transfer them to Trichoderma, based on phylogenetic analysis of the translation elongation factor 1-alpha encoding gene (tef1), containing the two last introns and exon, and a part of the rpb2 gene, encoding the second largest RNA polymerase subunit. Trichoderma lycogaloides, was found to cluster with Hypocrea sulawesensis, an unusual species of Trichoderma, while T. britannicum is closely related to T. aerugineum of the Spinulosa clade. The anamorphs of the two examined species are characterized by (odd) verticillium-like conidiophores, large cylindrical phialides and conidia, which belong to the largest of those species forming green conidia, oval to subglobose in T. lycogaloides and oblong in T. britannicum. All species currently recognized in Sarawakus are transferred to Trichoderma, introducing the new combinations T. fragile, T. hexasporum, T. izawae, T. sordidum, T. subtrachycarpum, T. succisum and T. trachycarpum and the new name T. rosellum. Trichoderma trachycarpum is redescribed and illustrated from an isotype.
MeSH term(s)	Fungal Proteins/genetics ; Hypocreales/classification ; Hypocreales/genetics ; Hypocreales/isolation & purification ; Molecular Sequence Data ; Peptide Elongation Factor 1/genetics ; Phylogeny ; Spores, Fungal/classification ; Spores, Fungal/genetics ; Spores, Fungal/growth & development ; Spores, Fungal/isolation & purification
Chemical Substances	Fungal Proteins ; Peptide Elongation Factor 1
Language	English
Publishing date	2014-03-06
Publishing country	England
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ZDB-ID	281335-x
ISSN	1557-2536 ; 0027-5514
ISSN (online)	1557-2536
ISSN	0027-5514
DOI	10.3852/13-117
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Article ; Online: Screening of five marine-derived fungal strains for their potential to produce oxidases with laccase activities suitable for biotechnological applications.

Ben Ali, Wissal / Chaduli, Delphine / Navarro, David / Lechat, Christian / Turbé-Doan, Annick / Bertrand, Emmanuel / Faulds, Craig B / Sciara, Giuliano / Lesage-Meessen, Laurence / Record, Eric / Mechichi, Tahar

BMC biotechnology

2020 Volume 20, Issue 1, Page(s) 27

Abstract: Background: Environmental pollution is one of the major problems that the world is facing today. Several approaches have been taken, from physical and chemical methods to biotechnological strategies (e.g. the use of oxidoreductases). Oxidative enzymes ... ...

Abstract	Background: Environmental pollution is one of the major problems that the world is facing today. Several approaches have been taken, from physical and chemical methods to biotechnological strategies (e.g. the use of oxidoreductases). Oxidative enzymes from microorganisms offer eco-friendly, cost-effective processes amenable to biotechnological applications, such as in industrial dye decolorization. The aim of this study was to screen marine-derived fungal strains isolated from three coastal areas in Tunisia to identify laccase-like activities, and to produce and characterize active cell-free supernatants of interest for dye decolorization. Results: Following the screening of 20 fungal strains isolated from the harbors of Sfax and Monastir (Tunisia), five strains were identified that displayed laccase-like activities. Molecular-based taxonomic approaches identified these strains as belonging to the species Trichoderma asperellum, Stemphylium lucomagnoense and Aspergillus nidulans. Among these five isolates, one T. asperellum strain (T. asperellum 1) gave the highest level of secreted oxidative activities, and so was chosen for further studies. Optimization of the growth medium for liquid cultures was first undertaken to improve the level of laccase-like activity in culture supernatants. Finally, the culture supernatant of T. asperellum 1 decolorized different synthetic dyes belonging to diverse dye families, in the presence or absence of 1-hydroxybenzotriazole (HBT) as a mediator. Conclusions: The optimal growth conditions to produce laccase-like active cell-free supernatants from T. asperellum 1 were 1.8 mM CuSO
MeSH term(s)	Ascomycota ; Aspergillus nidulans ; Biotechnology ; Coloring Agents/chemistry ; Fungi/classification ; Fungi/enzymology ; Fungi/genetics ; Fungi/isolation & purification ; Hypocreales ; Laccase/genetics ; Laccase/metabolism ; Mass Screening ; Phylogeny ; Seawater/microbiology ; Seaweed/microbiology
Chemical Substances	Coloring Agents ; Laccase (EC 1.10.3.2)
Language	English
Publishing date	2020-05-12
Publishing country	England
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ISSN	1472-6750
ISSN (online)	1472-6750
DOI	10.1186/s12896-020-00617-y
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Article ; Online: Paecilosetin Derivatives as Potent Antimicrobial Agents from

Journal of natural products

2020 Volume 83, Issue 10, Page(s) 2915–2922

Abstract: Fifty-seven entomopathogenic microorganisms were screened against human pathogens and subjected to mass spectrometry molecular networking based dereplication. ...

Abstract	Fifty-seven entomopathogenic microorganisms were screened against human pathogens and subjected to mass spectrometry molecular networking based dereplication.
Language	English
Publishing date	2020-10-06
Publishing country	United States
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ZDB-ID	304325-3
ISSN	1520-6025 ; 0163-3864
ISSN (online)	1520-6025
ISSN	0163-3864
DOI	10.1021/acs.jnatprod.0c00444
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Article ; Online: The enigma of Calonectria species occurring on leaves of Ilex aquifolium in Europe.

Lechat, Christian / Crous, Pedro W / Groenewald, Johannes Z

IMA fungus

2010 Volume 1, Issue 2, Page(s) 101–108

Abstract: Species of Calonectria are common saprobes and plant pathogens on a wide range of hosts occurring in subtropical to tropical regions of the world. The aim of the present study was to resolve the status of new Calonectria collections obtained on Ilex ... ...

Abstract	Species of Calonectria are common saprobes and plant pathogens on a wide range of hosts occurring in subtropical to tropical regions of the world. The aim of the present study was to resolve the status of new Calonectria collections obtained on Ilex leaves from France. Based on DNA sequence data of their β-tubulin and histone gene regions, as well as morphology, the new collections matched the ex-type strain of Cylindrocladium ilicicola. On the host and in culture, yellow to brownish-yellow perithecia were observed that did not strain red in 3 % KOH. Based on these results, C. ilicicola and its purported teleomorph, Ca. pyrochroa, were shown to represent two distinct species, as the latter has bright red perithecia that strain purple in KOH. A new combination, Ca. lauri, based on Tetracytumlauri, is subsequently proposed for C. ilicicola. Calonectria lauri is distinct from Ca. ilicicola, a pathogen commonly associated with Cylindrocladium black rot of peanut. Finally, Ca. canadiana is proposed as new name for Cy. canadiense, which is a nursery pathogen involved with root rot of several tree genera in Quebec, Canada.
Language	English
Publishing date	2010-11-02
Publishing country	England
Document type	Journal Article
ZDB-ID	2666116-0
ISSN	2210-6359 ; 2210-6340
ISSN (online)	2210-6359
ISSN	2210-6340
DOI	10.5598/imafungus.2010.01.02.01
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Article ; Online: Large-scale phenotyping of 1,000 fungal strains for the degradation of non-natural, industrial compounds.

Navarro, David / Chaduli, Delphine / Taussac, Sabine / Lesage-Meessen, Laurence / Grisel, Sacha / Haon, Mireille / Callac, Philippe / Courtecuisse, Régis / Decock, Cony / Dupont, Joëlle / Richard-Forget, Florence / Fournier, Jacques / Guinberteau, Jacques / Lechat, Christian / Moreau, Pierre-Arthur / Pinson-Gadais, Laetitia / Rivoire, Bernard / Sage, Lucile / Welti, Stéphane /

Rosso, Marie-Noëlle / Berrin, Jean-Guy / Bissaro, Bastien / Favel, Anne

Communications biology

2021 Volume 4, Issue 1, Page(s) 871

Abstract: Fungal biotechnology is set to play a keystone role in the emerging bioeconomy, notably to address pollution issues arising from human activities. Because they preserve biological diversity, Biological Resource Centres are considered as critical ... ...

Abstract	Fungal biotechnology is set to play a keystone role in the emerging bioeconomy, notably to address pollution issues arising from human activities. Because they preserve biological diversity, Biological Resource Centres are considered as critical infrastructures to support the development of biotechnological solutions. Here, we report the first large-scale phenotyping of more than 1,000 fungal strains with evaluation of their growth and degradation potential towards five industrial, human-designed and recalcitrant compounds, including two synthetic dyes, two lignocellulose-derived compounds and a synthetic plastic polymer. We draw a functional map over the phylogenetic diversity of Basidiomycota and Ascomycota, to guide the selection of fungal taxa to be tested for dedicated biotechnological applications. We evidence a functional diversity at all taxonomic ranks, including between strains of a same species. Beyond demonstrating the tremendous potential of filamentous fungi, our results pave the avenue for further functional exploration to solve the ever-growing issue of ecosystems pollution.
MeSH term(s)	Ascomycota/classification ; Ascomycota/genetics ; Ascomycota/metabolism ; Basidiomycota/classification ; Basidiomycota/genetics ; Basidiomycota/metabolism ; Biotechnology/methods ; Coloring Agents/metabolism ; Fungi/classification ; Fungi/genetics ; Fungi/metabolism ; Genetic Variation ; Geography ; Humans ; Industrial Microbiology/methods ; Lignin/metabolism ; Phenotype ; Phylogeny ; Plastics/metabolism ; Species Specificity
Chemical Substances	Coloring Agents ; Plastics ; lignocellulose (11132-73-3) ; Lignin (9005-53-2)
Language	English
Publishing date	2021-07-15
Publishing country	England
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ISSN	2399-3642
ISSN (online)	2399-3642
DOI	10.1038/s42003-021-02401-w
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Article: A new species of Hydropisphaera, H. bambusicola, is the sexual state of Gliomastix fusigera

Lechat, Christian / Farr, David F / Hirooka, Yuuri / Minnis, Andrew M / Rossman, Amy Y

Mycotaxon. 2010 Jan-Mar, v. 111

2010

Abstract: Hydropisphaera bambusicola sp. nov. (Bionectriaceae, Hypocreales) is described and illustrated based on a collection from Bambusa vulgaris in Martinique. The asexual state was obtained in culture and identified as Gliomastix fusigera. Gliomastix fusigera ...

Abstract	Hydropisphaera bambusicola sp. nov. (Bionectriaceae, Hypocreales) is described and illustrated based on a collection from Bambusa vulgaris in Martinique. The asexual state was obtained in culture and identified as Gliomastix fusigera. Gliomastix fusigera is an anamorphic species that occurs on members of the Arecaceae and Poaceae throughout the tropics and for which no sexual state is known. Hydropisphaera bambusicola is distinctive in having aseptate, striate ascospores. All other species of Hydropisphaera and most species of the Bionectriaceae have one or more septate ascospores. Hydropisphaera bambusicola and eight other species in Hydropisphaera are unusual in having fasciculate hairs near the perithecial apex. A key to the species of Hydropisphaera with hairs is presented.
Keywords	Ascomycota ; taxonomy ; new species ; geographical distribution ; descriptions ; fungal anatomy ; asci ; ascospores ; hyphae ; Bambusa vulgaris ; anamorphs ; taxonomic keys ; Martinique
Language	English
Dates of publication	2010-01
Size	p. 95-102.
Document type	Article
ZDB-ID	2409472-9
ISSN	0093-4666
ISSN	0093-4666
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Article: Chemotaxonomic and phylogenetic studies of Thamnomyces (Xylariaceae)

Stadler, Marc / Fournier, Jacques / Læssøe, Thomas / Chlebicki, Andrzej / Lechat, Christian / Flessa, Fabienne / Rambold, Gerhard / Peršoh, Derek

Mycoscience. 2010 May, v. 51, no. 3

2010

Abstract: The tropical genus Thamnomyces is characterized by having wiry, black, brittle stromata and early deliquescent asci, lacking an amyloid apical apparatus. Thamnomyces is regarded as a member of the Xylariaceae because the morphology of its ascospores and ... ...

Abstract	The tropical genus Thamnomyces is characterized by having wiry, black, brittle stromata and early deliquescent asci, lacking an amyloid apical apparatus. Thamnomyces is regarded as a member of the Xylariaceae because the morphology of its ascospores and the anamorphic structures are typical for this family. However, its relationship to other xylariaceous genera remained to be clarified. Cultures of three Thamnomyces species were obtained and studied for morphological characters, and their secondary metabolite profiles as inferred from high performance liquid chromatography coupled with mass spectrometric and diode array detection (HPLC-MS/DAD) were also compared. Cultures of Thamnomyces closely resembled those of the genera Daldinia and Phylacia and even produced several secondary metabolite families that are known to be chemotaxonomic markers for the aforementioned genera. These findings were corroborated by a comparison of their 5.8S/ITS nrDNA sequences. We conclude that Thamnomyces, Daldinia, and Phylacia are derived from the same evolutionary lineage, despite these genera differing drastically in their stromatal morphology and anatomy. Along with Entonaema and Rhopalostoma, these fungi comprise an evolutionarily derived lineage of the hypoxyloid Xylariaceae. A new species of Thamnomyces is erected, and preliminary descriptions of three further, potentially new taxa are also provided.
Keywords	chemotaxonomy ; fungi ; metabolomics ; phylogeny ; Xylariales
Language	English
Dates of publication	2010-05
Size	p. 189-207.
Publisher	Springer Japan
Publishing place	Japan
Document type	Article
ZDB-ID	1285813-4
ISSN	1618-2545 ; 1340-3540
ISSN (online)	1618-2545
ISSN	1340-3540
DOI	10.1007/s10267-009-0028-9
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