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Kusama-Eguchi K, Tokui Y, Minoura A, Yanai Y, Hirose D, Furukawa M, Kosuge Y, Miura M, Ohkoshi E, Makino M, Minagawa K, Matsuzaki K, Ogawa Y, Watanabe K, Ohsaki A. 2(3H)-Dihydrofranolactone metabolites from Pleosporales sp. NUH322 as anti-amyotrophic lateral sclerosis drugs. J Nat Med 2024; 78:146-159. [PMID: 37804412 DOI: 10.1007/s11418-023-01751-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Accepted: 09/08/2023] [Indexed: 10/09/2023]
Abstract
Amyotrophic lateral sclerosis (ALS) is a devastating motor disease with limited treatment options. A domestic fungal extract library was screened using three assays related to the pathophysiology of ALS with the aim of developing a novel ALS drug. 2(3H)-dihydrofuranolactones 1 and 2, and five known compounds 3-7 were isolated from Pleosporales sp. NUH322 culture media, and their protective activity against the excitotoxicity of β-N-oxalyl-L-α,β-diaminopropionic acid (ODAP), an α-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid (AMPA)-type glutamatergic agonist, was evaluated under low mitochondrial glutathione levels induced by ethacrynic acid (EA) and low sulfur amino acids using our developed ODAP-EA assay. Additional assays evaluated the recovery from cytotoxicity caused by transfected SOD1-G93A, an ALS-causal gene, and the inhibitory effect against reactive oxygen species (ROS) elevation. The structures of 1 and 2 were elucidated using various spectroscopic methods. We synthesized 1 from D-ribose, and confirmed the absolute structure. Isolated and synthesized 1 displayed higher ODAP-EA activities than the extract and represented its activity. Furthermore, 1 exhibited protective activity against SOD1-G93A-induced toxicity. An ALS mouse model, SOD1-G93A, of both sexes, was treated orally with 1 at pre- and post-symptomatic stages. The latter treatment significantly extended their lifespan (p = 0.03) and delayed motor deterioration (p = 0.001-0.01). Our result suggests that 1 is a promising lead compound for the development of ALS drugs with a new spectrum of action targeting both SOD1-G93A proteopathy and excitotoxicity through its action on the AMPA-type glutamatergic receptor.
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Affiliation(s)
- Kuniko Kusama-Eguchi
- Department of Chemistry, College of Humanities and Science, Ninon University, Setagaya-Ku, Tokyo, 156-8550, Japan.
- Laboratory of Biochemistry, School of Pharmacy, Nihon University, Funabashi, Chiba, 274-8555, Japan.
- Laboratory of Medical Microbiology, School of Pharmacy, Nihon University. Funabashi, Chiba, 274-8555, Japan.
| | - Yuki Tokui
- Department of Chemistry, College of Humanities and Science, Ninon University, Setagaya-Ku, Tokyo, 156-8550, Japan
| | - Ai Minoura
- Laboratory of Biochemistry, School of Pharmacy, Nihon University, Funabashi, Chiba, 274-8555, Japan
| | - Yuta Yanai
- Department of Chemistry, College of Humanities and Science, Ninon University, Setagaya-Ku, Tokyo, 156-8550, Japan
- Laboratory of Biochemistry, School of Pharmacy, Nihon University, Funabashi, Chiba, 274-8555, Japan
| | - Dai Hirose
- Laboratory of Medical Microbiology, School of Pharmacy, Nihon University. Funabashi, Chiba, 274-8555, Japan
| | - Megumi Furukawa
- Laboratory of Pharmacognosy, School of Pharmacy, Nihon University, Funabashi, Chiba, 274-8555, Japan
| | - Yasuhiro Kosuge
- Laboratory of Pharmacology, School of Pharmacy, Nihon University, Funabashi, Chiba, 274-8555, Japan
| | - Motofumi Miura
- Laboratory of Molecular Chemistry, School of Pharmacy, Nihon University, Funabashi, Chiba, 274-8555, Japan
| | - Emika Ohkoshi
- Department of Natural Products Chemistry, Faculty of Pharmaceutical Sciences, Aomori University, Aomori, Aomori, 030-0943, Japan
| | - Mitsuko Makino
- Laboratory of Pharmacognosy, School of Pharmacy, Nihon University, Funabashi, Chiba, 274-8555, Japan
| | - Kimino Minagawa
- Laboratory of Biochemistry, School of Pharmacy, Nihon University, Funabashi, Chiba, 274-8555, Japan
- Division of Genomic Epidemiology and Clinical Trials, Clinical Trials Research Center, Nihon University School of Medicine, Tokyo, Japan
| | - Keiichi Matsuzaki
- Laboratory of Pharmacognosy, School of Pharmacy, Nihon University, Funabashi, Chiba, 274-8555, Japan
| | - Yoshio Ogawa
- Laboratory of Medical Microbiology, School of Pharmacy, Nihon University. Funabashi, Chiba, 274-8555, Japan
| | - Kazuko Watanabe
- Laboratory of Medical Microbiology, School of Pharmacy, Nihon University. Funabashi, Chiba, 274-8555, Japan
| | - Ayumi Ohsaki
- Department of Chemistry, College of Humanities and Science, Ninon University, Setagaya-Ku, Tokyo, 156-8550, Japan.
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Pinchi-Davila XJ, Vargas-Hernández D, Romero-Jiménez MJ, Jumpponen A, Rudgers JA, Herrera J, Hutchinson M, Dunbar JM, Kuske C, Porras-Alfaro A. Pleoardoris graminearum, gen. et sp. nov., a new member of Pleosporales from North American Plains, its biogeography and effects on a foundation grass species. Mycologia 2023; 115:749-767. [PMID: 37874894 DOI: 10.1080/00275514.2023.2258269] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Accepted: 09/08/2023] [Indexed: 10/26/2023]
Abstract
Diverse fungi colonize plant roots worldwide and include species from many orders of the phylum Ascomycota. These fungi include taxa with dark septate hyphae that colonize grass roots and may modulate plant responses to stress. We describe a novel group of fungal isolates and evaluate their effects on the grass Bouteloua gracilis in vitro. We isolated fungi from roots of six native grasses from 24 sites spanning replicated latitudinal gradients in the south-central US grasslands and characterized isolates phylogenetically using a genome analysis. We analyzed 14 isolates representing a novel clade within the family Montagnulaceae (order Pleosporales), here typified as Pleoardoris graminearum, closely related to the genera Didymocrea and Bimuria. This novel species produces asexual, light brown pycnidium-like conidioma, hyaline hyphae, and chlamydospores when cultured on quinoa and kiwicha agar. To evaluate its effects on B. gracilis, seeds were inoculated with one of three isolates (DS304, DS334, and DS1613) and incubated at 25 C for 20 d. We also tested the effect of volatile organic compounds (VOCs) produced by the same isolates on B. gracilis root and stem lengths. Isolates had variable effects on plant growth. One isolate increased B. gracilis root length up to 34% compared with uninoculated controls. VOCs produced by two isolates increased root and stem lengths (P < 0.05) compared with controls. Internal transcribed spacer ITS2 metabarcode data revealed that P. graminearum is distributed across a wide range of sites in North America (22 of 24 sites sampled), and its relative abundance is influenced by host species identity and latitude. Host species identity and site were the most important factors determining P. graminearum relative abundance in drought experiments at the Extreme Drought in the Grasslands Experiment (EDGE) sites. Variable responses of B. gracilis to inoculation highlight the potential importance of nonmycorrhizal root-associated fungi on plant survival in arid ecosystems.
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Affiliation(s)
| | | | | | - Ari Jumpponen
- Division of Biology, Kansas State University, Manhattan, Kansas, 66506
| | - Jennifer A Rudgers
- Department of Biology, University of New Mexico, Albuquerque, New Mexico, 87131
| | - Jose Herrera
- Office of the Provost and Executive Vice President for Academic Affairs, University of Northern Iowa, Cedar Falls, Iowa, 50614
| | | | - John M Dunbar
- Los Alamos National Laboratory, Los Alamos, New Mexico, 87545
| | - Cheryl Kuske
- Los Alamos National Laboratory, Los Alamos, New Mexico, 87545
| | - Andrea Porras-Alfaro
- Institute for Environmental Studies, Western Illinois University, Macomb, Illinois
- Division of Environmental Biology, National Science Foundation, Alexandria, Virginia 22314
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3
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Wang WP, Shen HW, Bao DF, Lu YZ, Yang QX, Su XJ, Luo ZL. Two novel species and three new records of Torulaceae from Yunnan Province, China. MycoKeys 2023; 99:1-24. [PMID: 37588799 PMCID: PMC10425956 DOI: 10.3897/mycokeys.99.106699] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2023] [Accepted: 07/17/2023] [Indexed: 08/18/2023] Open
Abstract
While investigating the diversity of lignicolous fungi in Yunnan Province, China, six fresh collections of Torulaceae were collected and identified based on morphological examination and phylogenetic analyses of combined LSU, ITS, SSU, tef1-α, and rpb2 sequence data. Two new species, viz. Neopodoconisyunnanensis and Torulasuae, and three new records, viz. T.canangae (new freshwater habitat record), T.masonii (new host record), and T.sundara (new freshwater habitat record) are reported. Detailed descriptions, illustrations, and a phylogenetic tree to show the placement of these species are provided.
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Affiliation(s)
- Wen-Peng Wang
- College of Agriculture and Biological Science, Dali University, Dali 671003, Yunnan, China
| | - Hong-Wei Shen
- College of Agriculture and Biological Science, Dali University, Dali 671003, Yunnan, China
- Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai 57100, Thailand
| | - Dan-Feng Bao
- College of Agriculture and Biological Science, Dali University, Dali 671003, Yunnan, China
- Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai 57100, Thailand
| | - Yong-Zhong Lu
- School of Science, Mae Fah Luang University, Chiang Rai 57100, Thailand
| | - Qiu-Xia Yang
- College of Agriculture and Biological Science, Dali University, Dali 671003, Yunnan, China
| | - Xi-Jun Su
- College of Agriculture and Biological Science, Dali University, Dali 671003, Yunnan, China
| | - Zong-Long Luo
- College of Agriculture and Biological Science, Dali University, Dali 671003, Yunnan, China
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Gao Y, Zhong T, Bhat JD, Gomes de Farias AR, Dawoud TM, Hyde KD, Xiong W, Li Y, Gui H, Yang X, Wu S, Wanasinghe DN. Pleomorphic Dematiomelanommayunnanense gen. et sp. nov. (Ascomycota, Melanommataceae) from grassland vegetation in Yunnan, China. MycoKeys 2023; 98:273-297. [PMID: 37539358 PMCID: PMC10394607 DOI: 10.3897/mycokeys.98.107093] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2023] [Accepted: 07/03/2023] [Indexed: 08/05/2023] Open
Abstract
During a survey of microfungi associated with grasslands and related vegetation types from Yunnan Province in China, various ascomycetous and coelomycetous fungi were isolated. This study reports the discovery of four strains of ascomycetous and coelomycetous fungi from dead stalks of Hypericummonogynum L. (Hypericaceae) and Rubusparvifolius L. (Rosaceae) in the Zhaotong region of Yunnan Province, China. The isolates were characterized using multi-locus phylogenetic analyses and were found to represent a new monophyletic lineage in Melanommataceae (Pleosporales, Dothideomycetes). This new clade was named as Dematiomelanommayunnanense gen. et sp. nov. which consists of both sexual and asexual morphs. The sexual morph is characterized by globose to subglobose ascomata with a central ostiole, cylindrical asci with a pedicel and ocular chamber, and muriform, ellipsoidal to fusiform ascospores. The asexual morph has synanamorphs including both brown, muriform macroconidia and hyaline, round to oblong or ellipsoidal microconidia. These findings contribute to the understanding of fungal diversity in grasslands and related vegetation types in Yunnan Province, China.
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Affiliation(s)
- Ying Gao
- Center for Mountain Futures, Kunming Institute of Botany, Honghe 654400, Yunnan, ChinaCenter for Mountain Futures, Kunming Institute of BotanyKunmingChina
- School of Science, Mae Fah Luang University, Chiang Rai 57100, ThailandMae Fah Luang UniversityChiang RaiThailand
| | - Tingfang Zhong
- Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai 57100, ThailandKey Laboratory of Economic Plants and Biotechnology and the Yunnan Key Laboratory for Wild Plant Resources, Kunming Institute of Botany, Chinese Academy of SciencesKunmingChina
- Key Laboratory of Economic Plants and Biotechnology and the Yunnan Key Laboratory for Wild Plant Resources, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, ChinaUniversity of Chinese Academy of SciencesBeijingChina
| | - Jayarama D. Bhat
- University of Chinese Academy of Sciences, Beijing 100049, ChinaKing Saud UniversityRiyadhSaudi Arabia
- Department of Botany and Microbiology, College of Science, King Saud University, P.O. Box 2455, Riyadh-11451, Saudi ArabiaVishnugupta VishwavidyapeetamGokarnaIndia
| | | | - Turki M. Dawoud
- University of Chinese Academy of Sciences, Beijing 100049, ChinaKing Saud UniversityRiyadhSaudi Arabia
| | - Kevin D. Hyde
- School of Science, Mae Fah Luang University, Chiang Rai 57100, ThailandMae Fah Luang UniversityChiang RaiThailand
| | - Weiqiang Xiong
- Biology Division, Vishnugupta Vishwavidyapeetam, Ashoke, Gokarna 581326, IndiaScience and Technology on Aerospace Chemical Power Laboratory, Hubei Institute of Aerospace ChemotechnologyHubeiChina
| | - Yunju Li
- Science and Technology on Aerospace Chemical Power Laboratory, Hubei Institute of Aerospace Chemotechnology, Xiangyang, 441003, Hubei, ChinaThe State Phosphorus Resource Development and Utilization Engineering Technology Research CentreKunmingChina
- The State Phosphorus Resource Development and Utilization Engineering Technology Research Centre, Yunnan Phosphate Chemical Group Co. Ltd, Kunming, ChinaYTH Modern Agriculture Development Co. LtdKunmingChina
| | - Heng Gui
- Center for Mountain Futures, Kunming Institute of Botany, Honghe 654400, Yunnan, ChinaCenter for Mountain Futures, Kunming Institute of BotanyKunmingChina
- Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai 57100, ThailandKey Laboratory of Economic Plants and Biotechnology and the Yunnan Key Laboratory for Wild Plant Resources, Kunming Institute of Botany, Chinese Academy of SciencesKunmingChina
| | - Xuefei Yang
- Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai 57100, ThailandKey Laboratory of Economic Plants and Biotechnology and the Yunnan Key Laboratory for Wild Plant Resources, Kunming Institute of Botany, Chinese Academy of SciencesKunmingChina
- Key Laboratory of Economic Plants and Biotechnology and the Yunnan Key Laboratory for Wild Plant Resources, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, ChinaUniversity of Chinese Academy of SciencesBeijingChina
| | - Shixi Wu
- Biology Division, Vishnugupta Vishwavidyapeetam, Ashoke, Gokarna 581326, IndiaScience and Technology on Aerospace Chemical Power Laboratory, Hubei Institute of Aerospace ChemotechnologyHubeiChina
| | - Dhanushka N. Wanasinghe
- Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai 57100, ThailandKey Laboratory of Economic Plants and Biotechnology and the Yunnan Key Laboratory for Wild Plant Resources, Kunming Institute of Botany, Chinese Academy of SciencesKunmingChina
- YTH Modern Agriculture Development Co. Ltd, Kunming, ChinaCenter for Mountain Futures, Kunming Institute of BotanyYunnanChina
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Xu RJ, Zhu YA, Liu NG, Boonmee S, Zhou DQ, Zhao Q. Taxonomy and Phylogeny of Hyphomycetous Muriform Conidial Taxa from the Tibetan Plateau, China. J Fungi (Basel) 2023; 9:jof9050560. [PMID: 37233273 DOI: 10.3390/jof9050560] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Revised: 05/10/2023] [Accepted: 05/11/2023] [Indexed: 05/27/2023] Open
Abstract
During the investigation of lignicolous freshwater fungi in the Tibetan Plateau habitat, fifteen collections were isolated from submerged decaying wood. Fungal characteristics are commonly found as punctiform or powdery colonies with dark pigmented and muriform conidia. Multigene phylogenetic analyses of combined ITS, LSU, SSU and TEF DNA sequences showed that they belong to three families in Pleosporales. Among them, Paramonodictys dispersa, Pleopunctum megalosporum, Pl. multicellularum and Pl. rotundatum are established as new species. Paradictyoarthrinium hydei, Pleopunctum ellipsoideum and Pl. pseudoellipsoideum are reported as new records on the freshwater habitats in Tibetan Plateau, China. The morphological descriptions and illustrations of the new collections are provided.
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Affiliation(s)
- Rong-Ju Xu
- School of Science, Mae Fah Luang University, Chiang Rai 57100, Thailand
- Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai 57100, Thailand
- Yunnan Key Laboratory of Fungal Diversity and Green Development, Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
| | - Ying-An Zhu
- College of Landscape and Horticulture, Yunnan Agricultural University, Kunming 650201, China
| | - Ning-Guo Liu
- Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai 57100, Thailand
- Faculty of Agriculture, Natural Resources and Environment, Naresuan University, Phitsanulok 65000, Thailand
| | - Saranyaphat Boonmee
- School of Science, Mae Fah Luang University, Chiang Rai 57100, Thailand
- Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai 57100, Thailand
| | - De-Qun Zhou
- Academy of Fanjing Mountain National Park, Tongren University, Tongren 554300, China
| | - Qi Zhao
- Yunnan Key Laboratory of Fungal Diversity and Green Development, Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
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Sun YR, Zhang JY, Hyde KD, Wang Y, Jayawardena RS. Morphology and Phylogeny Reveal Three Montagnula Species from China and Thailand. Plants (Basel) 2023; 12:738. [PMID: 36840086 PMCID: PMC9961173 DOI: 10.3390/plants12040738] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/29/2022] [Revised: 01/28/2023] [Accepted: 02/01/2023] [Indexed: 06/18/2023]
Abstract
Four stains were isolated from two fresh twigs of Helwingia himalaica and two dead woods during investigations of micro-fungi in China and Thailand. Phylogenetic analyses of four gene regions LSU, ITS, SSU and tef1-α revealed the placement of these species in Montagnula. Based on the morphological examination and molecular data, two new species, M. aquatica and M. guiyangensis, and a known species M. donacina are described. Descriptions and illustrations of the new collections and a key to the Montagnula species are provided. Montagnula chromolaenicola, M. puerensis, M. saikhuensis, and M. thailandica are discussed and synonymized under M. donacina.
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Affiliation(s)
- Ya-Ru Sun
- School of Science, Mae Fah Luang University, Chiang Rai 57100, Thailand
- Department of Plant Pathology, College of Agriculture, Guizhou University, Guiyang 550025, China
- Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai 57100, Thailand
| | - Jing-Yi Zhang
- School of Science, Mae Fah Luang University, Chiang Rai 57100, Thailand
- Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai 57100, Thailand
| | - Kevin D. Hyde
- School of Science, Mae Fah Luang University, Chiang Rai 57100, Thailand
- Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai 57100, Thailand
- Innovative Institute for Plant Health, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China
| | - Yong Wang
- Department of Plant Pathology, College of Agriculture, Guizhou University, Guiyang 550025, China
| | - Ruvishika S. Jayawardena
- School of Science, Mae Fah Luang University, Chiang Rai 57100, Thailand
- Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai 57100, Thailand
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7
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Kularathnage ND, Senanayake IC, Wanasinghe DN, Doilom M, Stephenson SL, Song J, Dong W, Xu B. Plant-Associated Novel Didymellaceous Taxa in the South China Botanical Garden (Guangzhou, China). J Fungi (Basel) 2023; 9. [PMID: 36836297 DOI: 10.3390/jof9020182] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2022] [Revised: 01/25/2023] [Accepted: 01/26/2023] [Indexed: 01/31/2023] Open
Abstract
The South China Botanical Garden (SCBG), one of the largest and oldest botanical gardens in China, conserves important plant germplasms of endangered species. Therefore, ensuring tree health and studying the associated mycobiome of the phyllosphere is essential to maintaining its visual aesthetics. During a survey of plant-associated microfungal species in SCBG, we collected several coelomycetous taxa. Phylogenetic relationships were evaluated based on the analyses of ITS, LSU, RPB2, and β-tubulin loci. The morphological features of the new collections were compared with those of existing species, emphasizing close phylogenetic affinities. Based on the morphological comparisons and multi-locus phylogeny, we introduce three new species. These are Ectophoma phoenicis sp. nov., Remotididymella fici-microcarpae sp. nov., and Stagonosporopsis pedicularis-striatae sp. nov. In addition, we describe a new host record for Allophoma tropica in the Didymellaceae. Detailed descriptions and illustrations are provided along with notes comparing allied species.
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Liu J, Hu Y, Luo X, Castañeda-Ruíz RF, Xia J, Xu Z, Cui R, Shi X, Zhang L, Ma J. Molecular Phylogeny and Morphology Reveal Four Novel Species of Corynespora and Kirschsteiniothelia ( Dothideomycetes, Ascomycota) from China: A Checklist for Corynespora Reported Worldwide. J Fungi (Basel) 2023; 9:jof9010107. [PMID: 36675928 PMCID: PMC9863821 DOI: 10.3390/jof9010107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2022] [Revised: 01/09/2023] [Accepted: 01/10/2023] [Indexed: 01/15/2023] Open
Abstract
Plant debris are habitats favoring survival and multiplication of various microbial species. During continuing mycological surveys of saprobic microfungi from plant debris in Yunnan Province, China, several Corynespora-like and Dendryphiopsis-like isolates were collected from dead branches of unidentified perennial dicotyledonous plants. Four barcodes, i.e., ITS, LSU, SSU and tef1-α, were amplified and sequenced. Morphological studies and multigene phylogenetic analyses by maximum likelihood and Bayesian inference revealed three new Corynespora species (C. mengsongensis sp. nov., C. nabanheensis sp. nov. and C. yunnanensis sp. nov.) and a new Kirschsteiniothelia species (K. nabanheensis sp. nov.) within Dothideomycetes, Ascomycota. A list of identified and accepted species of Corynespora with major morphological features, host information and locality was compiled. This work improves the knowledge of species diversity of Corynespora and Kirschsteiniothelia in Yunnan Province, China.
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Affiliation(s)
- Jingwen Liu
- College of Agronomy, Jiangxi Agricultural University, Nanchang 330045, China
| | - Yafen Hu
- College of Agronomy, Jiangxi Agricultural University, Nanchang 330045, China
| | - Xingxing Luo
- College of Agronomy, Jiangxi Agricultural University, Nanchang 330045, China
| | - Rafael F. Castañeda-Ruíz
- Instituto de Investigaciones de Sanidad Vegetal, Calle 110 No. 514 e/5ta B y 5ta F, Playa, Havana 17200, Cuba
| | - Jiwen Xia
- Shandong Provincial Key Laboratory for Biology of Vegetable Diseases and Insect Pests, College of Plant Protection, Shandong Agricultural University, Taian 271018, China
| | - Zhaohuan Xu
- College of Agronomy, Jiangxi Agricultural University, Nanchang 330045, China
| | - Ruqiang Cui
- College of Agronomy, Jiangxi Agricultural University, Nanchang 330045, China
| | - Xugen Shi
- College of Agronomy, Jiangxi Agricultural University, Nanchang 330045, China
| | - Lianhu Zhang
- College of Agronomy, Jiangxi Agricultural University, Nanchang 330045, China
| | - Jian Ma
- College of Agronomy, Jiangxi Agricultural University, Nanchang 330045, China
- Correspondence:
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Luque C, Cepero A, Perazzoli G, Mesas C, Quiñonero F, Cabeza L, Prados J, Melguizo C. In Vitro Efficacy of Extracts and Isolated Bioactive Compounds from Ascomycota Fungi in the Treatment of Colorectal Cancer: A Systematic Review. Pharmaceuticals (Basel) 2022; 16:ph16010022. [PMID: 36678519 PMCID: PMC9864996 DOI: 10.3390/ph16010022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Revised: 12/15/2022] [Accepted: 12/18/2022] [Indexed: 12/28/2022] Open
Abstract
Colorectal cancer (CRC) is the second leading cause of cancer-related deaths worldwide. Despite the advances and success of current treatments (e.g., chemotherapy), there are multiple serious side effects which require the development of new treatment strategies. In recent years, fungi have gained considerable attention as a source of extracts and bioactive compounds with antitumor capabilities because of their antimicrobial and antioxidant properties and even their anti-inflammatory and antiviral activities. In the present review, a systematic search of the existing literature in four electronic databases was carried out in which the antitumor activity against CRC cells of Ascomycota fungi extracts or compounds was tested. The systematical research in the four databases resulted in a total of 883 articles. After applying exclusion and inclusion criteria, a total of 75 articles were finally studied. The order Eurotiales was the most studied (46% of the articles), and the ethyl acetate extraction was the most used method (49% of the papers). Penicillium extracts and gliotoxin and acetylgliotoxin G bioactive compounds showed the highest cytotoxic activity. This review also focuses on the action mechanisms of the extracts and bioactive compounds of fungi against CRC, which were mediated by apoptosis induction and the arrest of the cell cycle, which induces a notable reduction in the CRC cell proliferation capacity, and by the reduction in cell migration that limits their ability to produce metastasis. Thus, the ability of fungi to induce the death of cancer cells through different mechanisms may be the basis for the development of new therapies that improve the current results, especially in the more advanced stages of the CCR.
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Affiliation(s)
- Cristina Luque
- Institute of Biopathology and Regenerative Medicine (IBIMER), Center of Biomedical Research (CIBM), University of Granada, 18100 Granada, Spain
- Department of Anatomy and Embryology, Faculty of Medicine, University of Granada, 18071 Granada, Spain
- Instituto de Investigación Biosanitaria de Granada (ibs.GRANADA), 18014 Granada, Spain
| | - Ana Cepero
- Institute of Biopathology and Regenerative Medicine (IBIMER), Center of Biomedical Research (CIBM), University of Granada, 18100 Granada, Spain
- Department of Anatomy and Embryology, Faculty of Medicine, University of Granada, 18071 Granada, Spain
- Instituto de Investigación Biosanitaria de Granada (ibs.GRANADA), 18014 Granada, Spain
| | - Gloria Perazzoli
- Institute of Biopathology and Regenerative Medicine (IBIMER), Center of Biomedical Research (CIBM), University of Granada, 18100 Granada, Spain
- Instituto de Investigación Biosanitaria de Granada (ibs.GRANADA), 18014 Granada, Spain
| | - Cristina Mesas
- Institute of Biopathology and Regenerative Medicine (IBIMER), Center of Biomedical Research (CIBM), University of Granada, 18100 Granada, Spain
- Department of Anatomy and Embryology, Faculty of Medicine, University of Granada, 18071 Granada, Spain
- Instituto de Investigación Biosanitaria de Granada (ibs.GRANADA), 18014 Granada, Spain
| | - Francisco Quiñonero
- Institute of Biopathology and Regenerative Medicine (IBIMER), Center of Biomedical Research (CIBM), University of Granada, 18100 Granada, Spain
- Department of Anatomy and Embryology, Faculty of Medicine, University of Granada, 18071 Granada, Spain
- Instituto de Investigación Biosanitaria de Granada (ibs.GRANADA), 18014 Granada, Spain
| | - Laura Cabeza
- Institute of Biopathology and Regenerative Medicine (IBIMER), Center of Biomedical Research (CIBM), University of Granada, 18100 Granada, Spain
- Department of Anatomy and Embryology, Faculty of Medicine, University of Granada, 18071 Granada, Spain
- Instituto de Investigación Biosanitaria de Granada (ibs.GRANADA), 18014 Granada, Spain
| | - Jose Prados
- Institute of Biopathology and Regenerative Medicine (IBIMER), Center of Biomedical Research (CIBM), University of Granada, 18100 Granada, Spain
- Department of Anatomy and Embryology, Faculty of Medicine, University of Granada, 18071 Granada, Spain
- Instituto de Investigación Biosanitaria de Granada (ibs.GRANADA), 18014 Granada, Spain
- Correspondence: ; Tel.: +34-958-248819
| | - Consolación Melguizo
- Institute of Biopathology and Regenerative Medicine (IBIMER), Center of Biomedical Research (CIBM), University of Granada, 18100 Granada, Spain
- Department of Anatomy and Embryology, Faculty of Medicine, University of Granada, 18071 Granada, Spain
- Instituto de Investigación Biosanitaria de Granada (ibs.GRANADA), 18014 Granada, Spain
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10
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Hu HM, Liu LL, Zhang X, Lin Y, Shen XC, Long SH, Kang JC, Wijayawardene NN, Li QR, Long QD. New species and records of Neomassaria, Oxydothis and Roussoella (Pezizomycotina, Ascomycota) associated with palm and bamboo from China. MycoKeys 2022; 93:165-191. [PMID: 36761913 PMCID: PMC9836516 DOI: 10.3897/mycokeys.93.89888] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2022] [Accepted: 09/25/2022] [Indexed: 11/12/2022] Open
Abstract
Several micro fungi were gathered from bamboo and palm in Guizhou Province, China. In morphology, these taxa resemble Neomassaria, Roussoella and Oxydothis. Multi-gene phylogenetic analyses based on combined ITS, LSU, SSU, rpb2 and tef1 loci confirmed that two are new geographical records for China, (viz. Roussoellasiamensis, Neomassariafabacearum), while two of them are new to science (viz. Oxydothisfortunei sp. nov. and Roussoellabambusarum sp. nov.). The stromata of Roussoellabambusarum are similar to those of R.thailandica, but its ascospores are larger. In addition, multi-gene phylogenetic analyses show that Oxydothisfortunei is closely related to O.inaequalis, but the J- ascus subapical ring as well as the ascospores of O.inaequalis are smaller. Morphological descriptions and illustrations of all species are provided.
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Affiliation(s)
- Hong Min Hu
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang, China
| | - Li Li Liu
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang, China
| | - Xu Zhang
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang, China
| | - Yan Lin
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang, China
| | - Xiang Chun Shen
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang, China
| | - Si Han Long
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang, China
| | - Ji Chuan Kang
- The Key Laboratory of Optimal Utilization of Natural Medicine Resources, School of Pharmaceutical Sciences, Guizhou Medical University, University Town, Guian New District, Guizhou, China
| | - Nalin N. Wijayawardene
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang, China,Key Laboratory of Infectious Immune and Antibody Engineering of Guizhou Province, Cellular Immunotherapy Engineering Research Center of Guizhou Province, School of Biology and Engineering, Guizhou Medical University, Guiyang 550025, China,Immune Cells and Antibody Engineering Research Center of Guizhou Province, School of Biology and Engineering, Guizhou Medical University, Guiyang 550025, China
| | - Qi Rui Li
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang, China
| | - Qing De Long
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang, China
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11
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Wijayawardene NN, Dai DQ, Zhu ML, Wanasinghe DN, Kumla J, Zhang GQ, Zhang TT, Han LS, Tibpromma S, Chen HH. Fungi associated with dead branches of Magnolia grandiflora: A case study from Qujing, China. Front Microbiol 2022; 13:954680. [PMID: 35992688 PMCID: PMC9386272 DOI: 10.3389/fmicb.2022.954680] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2022] [Accepted: 06/30/2022] [Indexed: 11/13/2022] Open
Abstract
As a result of an ongoing survey of microfungi associated with garden and ornamental plants in Qijing, Yunnan, China, several saprobic fungal taxa were isolated from Magnolia grandiflora. Both morphological and combined SSU, LSU, ITS, tef1, and rpb2 locus phylogenetic analyses (maximum-likelihood and Bayesian analyses) were carried out to identify the fungal taxa. Three new species are introduced in Pleosporales, viz., Lonicericola qujingensis (Parabambusicolaceae), Phragmocamarosporium magnoliae, and Periacma qujingensis (Lentitheciaceae). Botryosphaeria dothidea, Diplodia mutila, and Diplodia seriata (in Botryosphaeriaceae) are reported from Magnolia grandiflora for the first time in China. Angustimassarina populi (Amorosiaceae) is reported for the first time on M. grandiflora from China, and this is the first report of a member of this genus outside Europe. Shearia formosa is also reported for the first time on M. grandiflora from China.
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Affiliation(s)
- Nalin N. Wijayawardene
- Center for Yunnan Plateau Biological Resources Protection and Utilization, Yunnan Engineering Research Center of Fruit Wine, College of Biological Resource and Food Engineering, Qujing Normal University, Qujing, China
- Section of Genetics, Institute for Research and Development in Health and Social Care, Battaramulla, Sri Lanka
| | - Dong-Qin Dai
- Center for Yunnan Plateau Biological Resources Protection and Utilization, Yunnan Engineering Research Center of Fruit Wine, College of Biological Resource and Food Engineering, Qujing Normal University, Qujing, China
| | - Mei-Ling Zhu
- Center for Yunnan Plateau Biological Resources Protection and Utilization, Yunnan Engineering Research Center of Fruit Wine, College of Biological Resource and Food Engineering, Qujing Normal University, Qujing, China
| | - Dhanushka N. Wanasinghe
- Centre for Mountain Futures, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, China
- Department of Economic Plants and Biotechnology, Yunnan Key Laboratory for Wild Plant Resources, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, China
| | - Jaturong Kumla
- Research Centre of Microbial Diversity and Sustainable Utilization, Chiang Mai University, Chiang Mai, Thailand
| | - Gui-Qing Zhang
- Center for Yunnan Plateau Biological Resources Protection and Utilization, Yunnan Engineering Research Center of Fruit Wine, College of Biological Resource and Food Engineering, Qujing Normal University, Qujing, China
| | - Ting-Ting Zhang
- Center for Yunnan Plateau Biological Resources Protection and Utilization, Yunnan Engineering Research Center of Fruit Wine, College of Biological Resource and Food Engineering, Qujing Normal University, Qujing, China
| | - Li-Su Han
- Center for Yunnan Plateau Biological Resources Protection and Utilization, Yunnan Engineering Research Center of Fruit Wine, College of Biological Resource and Food Engineering, Qujing Normal University, Qujing, China
| | - Saowaluck Tibpromma
- Center for Yunnan Plateau Biological Resources Protection and Utilization, Yunnan Engineering Research Center of Fruit Wine, College of Biological Resource and Food Engineering, Qujing Normal University, Qujing, China
| | - Huan-Huan Chen
- Center for Yunnan Plateau Biological Resources Protection and Utilization, Yunnan Engineering Research Center of Fruit Wine, College of Biological Resource and Food Engineering, Qujing Normal University, Qujing, China
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12
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Wanasinghe DN, Mortimer PE. Taxonomic and Phylogenetic Insights into Novel Ascomycota from Forest Woody Litter. Biology (Basel) 2022; 11:biology11060889. [PMID: 35741409 PMCID: PMC9220210 DOI: 10.3390/biology11060889] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/17/2022] [Revised: 06/02/2022] [Accepted: 06/07/2022] [Indexed: 11/25/2022]
Abstract
While surveying the mycobiomes of dead woody litter in Yunnan Province, China, numerous isolates with affinity to Pleosporales (Dothideomycetes, Ascomycota) were recovered. The present work characterizes two species associated with dead woody twigs found in terrestrial habitats in the Kunming area of Yunnan. The novel taxa were recognized based on a polyphasic approach, including morphological examination and multiple gene phylogenetic analyses (non-translated loci and protein-coding regions). Neokalmusia jonahhulmei sp. nov. is introduced in Didymosphaeriaceae (Pleosporales) as a woody-based saprobic ascomycete that possesses multiloculate ascostromata immersed under a black clypeus-like structure, and three-septate, brown, fusiform, guttulate ascospores. Thyridaria jonahhulmei (Thyridariaceae) is introduced with teleomorphic and anamorphic (coelomycetous) characteristics. The teleomorph has the following characteristics: globose to subglobose ascomata with an ostiolum, a pruinose layer of yellow to reddish- or orange-brown material appearing around the top of the ostiolar necks, and brown, ellipsoid to fusoid, two-to-three-septate, euseptate, rough-walled ascospores; the anamorph features pycnidial conidiomata, phialidic, ampulliform to doliiform, conidiogenous cells, and brown, guttulate, ellipsoidal, aseptate conidia.
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Affiliation(s)
- Dhanushka N. Wanasinghe
- Center for Mountain Futures, Kunming Institute of Botany, Chinese Academy of Sciences, Honghe 654400, China
- Department of Economic Plants and Biotechnology, Yunnan Key Laboratory for Wild Plant Resources, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
- Correspondence: (D.N.W.); (P.E.M.)
| | - Peter E. Mortimer
- Center for Mountain Futures, Kunming Institute of Botany, Chinese Academy of Sciences, Honghe 654400, China
- Department of Economic Plants and Biotechnology, Yunnan Key Laboratory for Wild Plant Resources, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
- Correspondence: (D.N.W.); (P.E.M.)
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13
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Ahmed SA, Engel T, Zoll J, Godschalk PCR, Klaasen R, Moreno L, van der Lee H, Verweij PE, de Hoog S. Meanderella rijsii, a new opportunist in the fungal order Pleosporales. Microbes Infect 2022; 24:104932. [PMID: 35032673 DOI: 10.1016/j.micinf.2022.104932] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Revised: 01/03/2022] [Accepted: 01/03/2022] [Indexed: 10/19/2022]
Abstract
Subcutaneous phaeohyphomycosis is an implantation disease caused by melanized fungi and affect both immunocompetent as well as immunocompromised individuals. Diagnosis and treatment require proper isolation and accurate identification of the causative pathogen. We isolated a novel fungus from a case of subcutaneous phaeohyphomycosis in an immunocompetent patient. The 56-year-old patient suffered from a slowly progressive swelling on the metatarsophalangeal join of the left food. The isolated fungus lacked sporulation and sequences of the ribosomal operon did not match with any known species. In a multi-locus phylogenetic analysis involving five markers, the fungus formed a unique lineage in the order Pleosporales, family Trematosphaeriaceae. A new genus, Meanderella and a new species, M. rijsii are here proposed to accommodate the clinical isolate. Whole genome analysis of M. rijsii revealed a number of genes that can be linked to pathogenicity and virulence. Further studies are however needed to understand the role of each gene in the pathogenic process and to determine the origin of pathogenicity in the family of Trematosphaeriaceae.
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Affiliation(s)
- Sarah A Ahmed
- Department of Medical Microbiology, Radboud University Medical Center and Radboudumc - CWZ Center of Expertise for Mycology, Nijmegen, the Netherlands; Foundation Atlas of Clinical Fungi, Hilversum, the Netherlands.
| | - Tobias Engel
- Laboratory for Medical Microbiology and Public Health, Hengelo, the Netherlands
| | - Jan Zoll
- Department of Medical Microbiology, Radboud University Medical Center and Radboudumc - CWZ Center of Expertise for Mycology, Nijmegen, the Netherlands
| | - Peggy C R Godschalk
- Department of Medical Microbiology and Medical Immunology, Meander Medical Center, Amersfoort, the Netherlands
| | - Ruth Klaasen
- Department of Rheumatology, Meander Medical Center, Amersfoort, the Netherlands
| | | | - Henrich van der Lee
- Department of Medical Microbiology, Radboud University Medical Center and Radboudumc - CWZ Center of Expertise for Mycology, Nijmegen, the Netherlands
| | - Paul E Verweij
- Department of Medical Microbiology, Radboud University Medical Center and Radboudumc - CWZ Center of Expertise for Mycology, Nijmegen, the Netherlands
| | - Sybren de Hoog
- Department of Medical Microbiology, Radboud University Medical Center and Radboudumc - CWZ Center of Expertise for Mycology, Nijmegen, the Netherlands; Foundation Atlas of Clinical Fungi, Hilversum, the Netherlands; Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education of Guizhou & Guizhou Talent Base for Microbiology and Human Health, School of Basic Medical Sciences, Guizhou Medical University, Guiyang, China
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14
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Abstract
High temperatures and extended drought in temperate and tropical arid ecosystems promote the colonization of diverse microenvironments by dark septate fungi (DSF). These fungi contribute to soil nutrient cycling, soil stabilization, and plant survival, but the roles of individual DSF species, their distributions, and their community diversity are poorly understood. The objective of this study was to evaluate the distribution, seasonal variation, and potential roles of DSF on plant growth. We collected biocrust (lichen-, moss-, and cyanobacterium-dominated biocrusts) soils at different depths and rhizosphere soils from two grasses, Bromus tectorum and Pleuraphis jamesii, in an arid grassland near Moab, Utah, USA. Seasonal variation of DSF was evaluated using culture-based approaches and compared with fungal community profiles from next-generation sequencing (NGS). Culturing showed that DSF were 30% more abundant in biocrusts compared with the focal rhizospheres. The abundance of DSF varied seasonally in belowground samples (rhizosphere and below-biocrust), with a significant increase during the summer months. Pleosporales was the dominant order (35%) in both biocrust and rhizosphere soils out of 817 isolated fungi. Dominant DSF genera in culture included Alternaria, Preussia, Cladosporium, Phoma, and an unknown Pleosporales. Similar results were observed in biocrust and rhizosphere soils NGS. Further, seed germination experiments using dominant taxa were conducted to determine their potential roles on germination and seedling growth using maize as a model plant. Cladosporium and unknown Pleosporales isolates showed plant growth-promoting ability. The variation in abundance of DSF, their differential occurrence in different microenvironments, and their ability to grow in a xerotolerant medium reflect adaptations to summer environmental conditions and to changes in the abundance of organic matter, as well as a potential increase in plant investment in these fungi when heat and drought stresses are more severe.
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Affiliation(s)
- Cedric Ndinga-Muniania
- Department of Biological Sciences and Institute for Environmental Studies, Western Illinois University, Macomb, Illinois 61455.,Department of Plant and Microbial Biology, University of Minnesota Twin Cities, St. Paul, 55108, Minnesota
| | - Rebecca C Mueller
- Center for Biofilm Engineering, Montana State University, Bozeman, Montana 59717
| | - Cheryl R Kuske
- Bioscience Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545
| | - Andrea Porras-Alfaro
- Department of Biological Sciences and Institute for Environmental Studies, Western Illinois University, Macomb, Illinois 61455.,Division of Environmental Biology, National Science Foundation, Alexandria, Virginia 22314
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15
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Atienza V, Hawksworth DL, Pérez-Ortega S. Verrucoccum (Dothideomycetes, Dictyosporiaceae), a new genus of lichenicolous fungi on Lobaria s. lat. for the Dothidea hymeniicola species complex. Mycologia 2021; 113:1233-1252. [PMID: 34591747 DOI: 10.1080/00275514.2021.1966281] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
Two lichenicolous fungi, one growing on the thallus of Lobaria pulmonaria in the United Kingdom (Scotland) and the other in apothecia of Lobaria linita and L. oregana in northwestern North America (Alaska and British Columbia) and northeast Asia (Russian Far East, Khabarovsk Krai), show similarities to the species originally described as Dothidea hymeniicola (later transferred to Polycoccum s. lat and Endococcus) from a Lobaria s. lat. species in Central America. Critical morphological comparison showed that, despite the superficial resemblance between Alaskan, Canadian, Russian, and Scottish collections and the holotype of Dothidea hymeniicola, they can be distinguished by detailed microscopic analyses. Using three molecular markers, sequences of the nuc 18S, 28S, and internal transcribed spacer (ITS) rDNA regions of the recent Scottish and Alaskan collections were obtained. Phylogenetic analyses confirmed separation of the species and revealed them as a new lineage in Pleosporales, for which the new generic name Verrucoccum is introduced for the three species: V. coppinsii, sp. nov., V. hymeniicola, comb. nov. (syn. Dothidea hymeniicola), and V. spribillei, sp. nov.
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Affiliation(s)
- Violeta Atienza
- Departament de Botànica i Geologia, Facultat de Ciències Biològiques, Universitat de València, Dr. Moliner 50, ES-46 071 Burjassot, València, Spain
| | - David L Hawksworth
- Department of Life Sciences, The Natural History Museum, Cromwell Road, London SW7 5BD, United Kingdom.,Comparative Fungal Biology, Royal Botanic Gardens, Kew, Surrey TW9 3DS, United Kingdom.,Jilin Agricultural University, Changchun, Jilin Province, 130118 China
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16
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Valenzuela-Lopez N, Martin-Gomez MT, Los-Arcos I, Stchigel AM, Guarro J, Cano-Lira JF. A new pleosporalean fungus isolated from superficial to deep human clinical specimens. Med Mycol 2021; 59:278-288. [PMID: 32717745 DOI: 10.1093/mmy/myaa055] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2020] [Revised: 06/04/2020] [Accepted: 06/09/2020] [Indexed: 12/22/2022] Open
Abstract
Human infections by pleosporalean fungi (class Dothideomycetes, phylum Ascomycota) are rarely reported. Because their identification is challenging using morphological characterization, several phylogenetic markers must be sequenced for an accurate identification and taxonomical placement of the isolates. Three isolates of clinical origin were phenotypically characterized, but due to the absence of relevant morphological traits, D1-D2 domains of the 28S nrRNA gene (LSU), the internal transcribed spacer region (ITS) of the nrRNA, and fragments of the RNA polymerase II subunit 2 (rpb2) and translation elongation factor 1-alpha (tef1) genes were sequenced to allow a phylogenetic analysis that would solve their phylogenetic placement. That analysis revealed that these isolates did not match any previously known pleosporalean genera, and they are proposed here as the new fungal genus, Gambiomyces. Unfortunately, the isolates remained sterile, which, consequently, made the morphological description of the reproductive structures impossible. Future studies should try to understand the behaviour of this fungus in nature as well as its characteristics as an opportunistic fungal pathogen. Molecular identification is becoming an essential tool for proper identification of Dothideomycetes of clinical origin. LAY ABSTRACT We describe a new pleosporalen pathogenic fungus, Gambiomyces profunda, found in superficial to deep samples from a human patient. Because all strains remained sterile, the fungus was finally identified following a phylogenetic analysis by using four different molecular markers.
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Affiliation(s)
- Nicomedes Valenzuela-Lopez
- Universitat Rovira i Virgili, Medical School, Mycology Unit, and IISPV, C/ Sant Llorenç 21, 43201 Reus, Spain.,Unidad de Microbiología, Departamento de Tecnología Médica, Facultad de Ciencias de la Salud, Universidad de Antofagasta, Antofagasta, Chile
| | | | - Ibai Los-Arcos
- Infectious Diseases Department, Hospital Universitario Vall d'Hebron, Barcelona, Spain
| | - Alberto M Stchigel
- Universitat Rovira i Virgili, Medical School, Mycology Unit, and IISPV, C/ Sant Llorenç 21, 43201 Reus, Spain
| | - Josep Guarro
- Universitat Rovira i Virgili, Medical School, Mycology Unit, and IISPV, C/ Sant Llorenç 21, 43201 Reus, Spain
| | - José F Cano-Lira
- Universitat Rovira i Virgili, Medical School, Mycology Unit, and IISPV, C/ Sant Llorenç 21, 43201 Reus, Spain
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17
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Lee RC, Farfan-Caceres L, Debler JW, Williams AH, Syme RA, Henares BM. Reference genome assembly for Australian Ascochyta lentis isolate Al4. G3 (Bethesda) 2021; 11:6114462. [PMID: 33604672 PMCID: PMC8022934 DOI: 10.1093/g3journal/jkab006] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/10/2020] [Accepted: 12/22/2020] [Indexed: 02/06/2023]
Abstract
Ascochyta lentis causes ascochyta blight in lentil (Lens culinaris Medik.) and yield loss can be as high as 50%. With careful agronomic management practices, fungicide use, and advances in breeding resistant lentil varieties, disease severity and impact to farmers have been largely controlled. However, evidence from major lentil producing countries, Canada and Australia, suggests that A. lentis isolates can change their virulence profile and level of aggressiveness over time and under different selection pressures. In this paper, we describe the first genome assembly for A. lentis for the Australian isolate Al4, through the integration of data from Illumina and PacBio SMRT sequencing. The Al4 reference genome assembly is almost 42 Mb in size and encodes 11,638 predicted genes. The Al4 genome comprises 21 full-length and gapless chromosomal contigs and two partial chromosome contigs each with one telomere. We predicted 31 secondary metabolite clusters, and 38 putative protein effectors, many of which were classified as having an unknown function. Comparison of A. lentis genome features with the recently published reference assembly for closely related A. rabiei show that genome synteny between these species is highly conserved. However, there are several translocations and inversions of genome sequence. The location of secondary metabolite clusters near transposable element and repeat-rich genomic regions was common for A. lentis as has been reported for other fungal plant pathogens.
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Affiliation(s)
- Robert C Lee
- Corresponding authors: Centre for Crop and Disease Management, School of Molecular and Life Sciences, Curtin University, Kent St, Bentley, WA 6102, Australia. (B.M.H.); (R.C.L.)
| | - Lina Farfan-Caceres
- Centre for Crop and Disease Management, School of Molecular and Life Sciences, Curtin University, Bentley, WA 6102, Australia
| | - Johannes W Debler
- Centre for Crop and Disease Management, School of Molecular and Life Sciences, Curtin University, Bentley, WA 6102, Australia
| | - Angela H Williams
- Department of Environment and Agriculture, Curtin University, Bentley, WA 6102, Australia
| | - Robert A Syme
- Centre for Crop and Disease Management, School of Molecular and Life Sciences, Curtin University, Bentley, WA 6102, Australia
| | - Bernadette M Henares
- Corresponding authors: Centre for Crop and Disease Management, School of Molecular and Life Sciences, Curtin University, Kent St, Bentley, WA 6102, Australia. (B.M.H.); (R.C.L.)
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18
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Mortimer PE, Jeewon R, Xu JC, Lumyong S, Wanasinghe DN. Morpho-Phylo Taxonomy of Novel Dothideomycetous Fungi Associated With Dead Woody Twigs in Yunnan Province, China. Front Microbiol 2021; 12:654683. [PMID: 33833748 PMCID: PMC8021917 DOI: 10.3389/fmicb.2021.654683] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2021] [Accepted: 02/25/2021] [Indexed: 01/02/2023] Open
Abstract
Within the field of mycology, macrofungi have been relatively well-studied when compared to microfungi. However, the diversity and distribution of microfungi inhabiting woody material have not received the same degree of research attention, especially in relatively unexplored regions, such as Yunnan Province, China. To help address this knowledge gap, we collected and examined fungal specimens from different plants at various locations across Yunnan Province. Our investigation led to the discovery of four species that are clearly distinct from extant ones. These taxonomic novelties were recognized based on morphological comparisons coupled with phylogenetic analyses of multiple gene sequences (non-translated loci and protein-coding regions). The monotypic genus Neoheleiosa gen. nov. (type: N. lincangensis) is introduced in Monoblastiaceae (Monoblastiales) for a woody-based saprobic ascomycete that possesses globose to subglobose or obpyriform ascomata with centric or eccentric, papillate ostioles, an ascomatal wall with thin-walled cells of textura globulosa, cylindric, pedicellate asci with an ocular chamber, and 1-septate, brown, guttulate, longitudinally striated, bicellular ascospores. Neoheleiosa has a close phylogenetic affinity to Heleiosa, nevertheless, it is morphologically dissimilar by its peridium cells and ornamented ascospores. Acrocalymma hongheense and A. yuxiense are described and illustrated as new species in Acrocalymmaceae. Acrocalymma hongheense is introduced with sexual and asexual (coelomycetous) features. The sexual morph is characterized by globose to subglobose, ostiolate ascomata, a peridium with textura angularis cells, cylindric-clavate asci with a furcate to truncate pedicel and an ocular chamber, hyaline, fusiform, 1-septate ascospores which are surrounded by a thick, distinct sheath, and the asexual morph is featured by pycnidial conidiomata, subcylindrical, hyaline, smooth, annelledic, conidiogenous cells, hyaline, guttulate, subcylindrical, aseptate conidia with mucoid ooze at the apex and with a rounded hilum at the base. Acrocalymma yuxiense is phylogenetically distinct from other extant species of Acrocalymma and differs from other taxa in Acrocalymma in having conidia with three vertical eusepta. Magnibotryascoma kunmingense sp. nov. is accommodated in Teichosporaceae based on its coelomycetous asexual morph which is characterized by pycnidial, globose to subglobose, papillate conidiomata, enteroblastic, annelledic, discrete, cylindrical to oblong, hyaline conidiogenous cells arising from the inner layer of pycnidium wall, subglobose, oval, guttulate, pale brown and unicelled conidia.
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Affiliation(s)
- Peter E. Mortimer
- CAS Key Laboratory for Plant Biodiversity and Biogeography of East Asia (KLPB), Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, China
- Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai, Thailand
- Honghe Center for Mountain Futures, Kunming Institute of Botany, Yunnan, China
| | - Rajesh Jeewon
- Department of Health Sciences, Faculty of Medicine and Health Sciences, University of Mauritius, Reduit, Mauritius
| | - Jian-Chu Xu
- CAS Key Laboratory for Plant Biodiversity and Biogeography of East Asia (KLPB), Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, China
- Honghe Center for Mountain Futures, Kunming Institute of Botany, Yunnan, China
- World Agroforestry Centre, East and Central Asia, Kunming, China
| | - Saisamorn Lumyong
- Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai, Thailand
- Faculty of Science, Research Center of Microbial Diversity and Sustainable Utilization, Chiang Mai University, Chiang Mai, Thailand
- Academy of Science, The Royal Society of Thailand, Bangkok, Thailand
| | - Dhanushka N. Wanasinghe
- CAS Key Laboratory for Plant Biodiversity and Biogeography of East Asia (KLPB), Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, China
- Honghe Center for Mountain Futures, Kunming Institute of Botany, Yunnan, China
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19
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Wanasinghe DN, Mortimer PE, Xu J. Insight into the Systematics of Microfungi Colonizing Dead Woody Twigs of Dodonaea viscosa in Honghe (China). J Fungi (Basel) 2021; 7:jof7030180. [PMID: 33802406 PMCID: PMC7999967 DOI: 10.3390/jof7030180] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Revised: 02/26/2021] [Accepted: 02/27/2021] [Indexed: 12/20/2022] Open
Abstract
Members of Dodonaea are broadly distributed across subtropical and tropical areas of southwest and southern China. This host provides multiple substrates that can be richly colonized by numerous undescribed fungal species. There is a severe lack of microfungal studies on Dodonaea in China, and consequently, the diversity, phylogeny and taxonomy of these microorganisms are all largely unknown. This paper presents two new genera and four new species in three orders of Dothideomycetes gathered from dead twigs of Dodonaea viscosa in Honghe, China. All new collections were made within a selected area in Honghe from a single Dodonaea sp. This suggests high fungal diversity in the region and the existence of numerous species awaiting discovery. Multiple gene sequences (non-translated loci and protein-coding regions) were analysed with maximum likelihood and Bayesian analyses. Results from the phylogenetic analyses supported placing Haniomyces dodonaeae gen. et sp. in the Teratosphaeriaceae family. Analysis of Rhytidhysteron sequences resulted in Rhytidhysteron hongheense sp. nov., while analysed Lophiostomataceae sequences revealed Lophiomurispora hongheensis gen. et sp. nov. Finally, phylogeny based on a combined dataset of pyrenochaeta-like sequences demonstrates strong statistical support for placing Quixadomyceshongheensis sp. nov. in Parapyrenochaetaceae. Morphological and updated phylogenetic circumscriptions of the new discoveries are also discussed.
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Affiliation(s)
- Dhanushka N. Wanasinghe
- CAS Key Laboratory for Plant Biodiversity and Biogeography of East Asia (KLPB), Kunming Institute of Botany, Chinese Academy of Science, Kunming 650201, Yunnan, China;
- World Agroforestry, East and Central Asia, 132 Lanhei Road, Kunming 650201, Yunnan, China
- Honghe Center for Mountain Futures, Kunming Institute of Botany, Honghe County 654400, Yunnan, China
| | - Peter E. Mortimer
- CAS Key Laboratory for Plant Biodiversity and Biogeography of East Asia (KLPB), Kunming Institute of Botany, Chinese Academy of Science, Kunming 650201, Yunnan, China;
- World Agroforestry, East and Central Asia, 132 Lanhei Road, Kunming 650201, Yunnan, China
- Correspondence: (P.E.M.); (J.X.); Tel.: +86-158-8784-3793 (P.E.M.); +86-138-0870-8795 (J.X.)
| | - Jianchu Xu
- CAS Key Laboratory for Plant Biodiversity and Biogeography of East Asia (KLPB), Kunming Institute of Botany, Chinese Academy of Science, Kunming 650201, Yunnan, China;
- World Agroforestry, East and Central Asia, 132 Lanhei Road, Kunming 650201, Yunnan, China
- Honghe Center for Mountain Futures, Kunming Institute of Botany, Honghe County 654400, Yunnan, China
- Correspondence: (P.E.M.); (J.X.); Tel.: +86-158-8784-3793 (P.E.M.); +86-138-0870-8795 (J.X.)
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20
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Bhunjun CS, Phukhamsakda C, Jeewon R, Promputtha I, Hyde KD. Integrating Different Lines of Evidence to Establish a Novel Ascomycete Genus and Family ( Anastomitrabeculia, Anastomitrabeculiaceae) in Pleosporales. J Fungi (Basel) 2021; 7:94. [PMID: 33525387 DOI: 10.3390/jof7020094] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Revised: 01/20/2021] [Accepted: 01/21/2021] [Indexed: 11/17/2022] Open
Abstract
A novel genus, Anastomitrabeculia, is introduced herein for a distinct species, Anastomitrabeculia didymospora, collected as a saprobe on dead bamboo culms from a freshwater stream in Thailand. Anastomitrabeculia is distinct in its trabeculate pseudoparaphyses and ascospores with longitudinally striate wall ornamentation. A new family, Anastomitrabeculiaceae, is introduced to accommodate Anastomitrabeculia. Anastomitrabeculiaceae forms an independent lineage basal to Halojulellaceae in Pleosporales and it is closely related to Neohendersoniaceae based on phylogenetic analyses of a combined LSU, SSU and TEF1α dataset. In addition, divergence time estimates provide further support for the establishment of Anastomitrabeculiaceae. The family diverged around 84 million years ago (MYA) during the Cretaceous period, which supports the establishment of the new family. The crown and stem age of Anastomitrabeculiaceae was also compared to morphologically similar pleosporalean families.
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21
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Yoshimura Y, Tani S, Fujiwara M, Nakamura M, Sumitani JI, Kawaguchi T. Biogenic manganese oxides combined with 1-hydroxybenzotriazol and an Mn(II)-oxidizing enzyme from Pleosporales sp. Mn1 oxidize 3,4-dimethoxytoluene to yield 3,4-dimethoxybenzaldehyde. J Biosci Bioeng 2021; 131:475-482. [PMID: 33495046 DOI: 10.1016/j.jbiosc.2020.12.014] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2020] [Revised: 12/24/2020] [Accepted: 12/25/2020] [Indexed: 12/16/2022]
Abstract
Using soil samples, we screened for microbes that produce biogenic manganese oxides (BMOs) and isolated Mn(II)-oxidizing fungus, namely Pleosporales sp. Mn1 (Mn1). We purified the Mn(II)-oxidizing enzyme from intracellular extracts of Mn1. The enzyme oxidized Mn(II) most effectively at pH 7.0 and 45 °C. The N-terminal amino acid sequence of the purified enzyme possessed homology with multicopper oxidases in fungi. The properties of the enzyme and the effects of the pH and inhibitors on the Mn(II)-oxidization activity suggested that the enzyme is a member of the multicopper oxidase family. The X-ray diffraction pattern of the BMOs produced by Mn1 showed a strong correlation with that of a typical poorly crystalized vernadite (δ-MnO2). Since BMOs are some of the most reactive materials in the environment, we investigated a potential new application of BMOs as oxidation catalysts. We confirmed that BMOs oxidized aromatic methyl groups when combined with the purified enzyme and a mediator, 1-hydroxybenzotriazole (HBT). BMO oxidation of 3,4-dimethoxytoluene achieved a better yield than that of abiotic MnO2 and white-rot fungus laccase under acidic and neutral pH conditions. Under neutral pH, the BMOs oxidized 3,4-dimethoxytoluene to yield 200-fold more 3,4-dimethoxybenzaldehyde than that of abiotic MnO2. This is the first report to reveal that BMOs combined with a Mn(II)-oxidizing enzyme and mediator can oxidize aromatic hydrocarbons to yield corresponding aldehydes.
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Affiliation(s)
- Yuko Yoshimura
- Graduate School of Life and Environmental Sciences, Osaka Prefecture University, 1-1 Gakuen-cho, Sakai, Osaka 599-8531, Japan; Industrial Technology Center of Wakayama Prefecture, 60 Ogura, Wakayama, Wakayama 649-6261, Japan
| | - Shuji Tani
- Graduate School of Life and Environmental Sciences, Osaka Prefecture University, 1-1 Gakuen-cho, Sakai, Osaka 599-8531, Japan
| | - Maki Fujiwara
- Industrial Technology Center of Wakayama Prefecture, 60 Ogura, Wakayama, Wakayama 649-6261, Japan
| | - Makoto Nakamura
- Industrial Technology Center of Wakayama Prefecture, 60 Ogura, Wakayama, Wakayama 649-6261, Japan
| | - Jun-Ichi Sumitani
- Graduate School of Life and Environmental Sciences, Osaka Prefecture University, 1-1 Gakuen-cho, Sakai, Osaka 599-8531, Japan
| | - Takashi Kawaguchi
- Graduate School of Life and Environmental Sciences, Osaka Prefecture University, 1-1 Gakuen-cho, Sakai, Osaka 599-8531, Japan.
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22
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Dos Santos MDDM, Guterres DC, Sepúlveda-Chavera GF, Souza ESDC, Pereira-Carvalho RDC, Pinho DB, Dianese JC. New genus of trichomatous coelomycete on Myrcia fenzliana from the Brazilian Cerrado. Mycologia 2020; 113:231-244. [PMID: 33327878 DOI: 10.1080/00275514.2020.1822094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Megacoelomyces (type species: Megacoelomyces sanchezii), an ascomycete asexual morph infecting Myrcia fenzliana (Myrtaceae) from the Brazilian Cerrado, is described as a new genus in the Phaeosphaeriaceae (Pleosporales, Dothideomycetes, Ascomycota), based on multilocus phylogeny (three nuclear ribosomal DNA and two protein-coding genes) in addition to morphological (light and scanning electron microscopy) and ecological data.
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Affiliation(s)
| | - Debora Cervieri Guterres
- Departamento de Fitopatologia, Universidade Federal de Viçosa , Viçosa, Minas Gerais, 36570-000, Brazil
| | - German F Sepúlveda-Chavera
- Departamento de Recursos Ambientales, Universidad de Tarapacá , Avenida General Velasquez 1775, Arica, Chile
| | - Erica Santos do Carmo Souza
- Departamento de Biologia Celular/Biologia Microbiana, Universidade de Brasília, Campus Darcy Ribeiro , Asa Norte, 70910-900 Brasília, Distrito Federal, Brazil
| | - Rita de Cassia Pereira-Carvalho
- Departamento de Fitopatologia, Universidade de Brasília, Campus Darcy Ribeiro , Asa Norte, 70910-900 Brasília, Distrito Federal, Brazil
| | - Danilo Batista Pinho
- Departamento de Fitopatologia, Universidade de Brasília, Campus Darcy Ribeiro , Asa Norte, 70910-900 Brasília, Distrito Federal, Brazil
| | - José Carmine Dianese
- Departamento de Biologia Celular/Biologia Microbiana, Universidade de Brasília, Campus Darcy Ribeiro , Asa Norte, 70910-900 Brasília, Distrito Federal, Brazil.,Departamento de Fitopatologia, Universidade de Brasília, Campus Darcy Ribeiro , Asa Norte, 70910-900 Brasília, Distrito Federal, Brazil
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23
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Magaña-Dueñas V, Stchigel AM, Cano-Lira JF. New Taxa of the Family Amniculicolaceae ( Pleosporales, Dothideomycetes, Ascomycota) from Freshwater Habitats in Spain. Microorganisms 2020; 8:E1355. [PMID: 32899790 DOI: 10.3390/microorganisms8091355] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2020] [Revised: 08/25/2020] [Accepted: 09/03/2020] [Indexed: 11/16/2022] Open
Abstract
With the exception of the so-called Ingoldian fungi, the diversity and distribution of the freshwater aero-aquatic or facultative fungi are not well known in Spain. In view of that, we collected and placed into wet chambers 105 samples of submerged and decomposing plant debris from various places in Spain, looking for individuals belonging to these latter two morpho-ecological groups of fungi. As a result, we found and isolated in pure culture several fungi, the morphology of some of them belonging to the family Amniculicolaceae (order Pleosporales, class Dothideomycetes). After a careful phenotypic characterization and a phylogenetic tree reconstruction using a concatenated sequence dataset of D1-D2 domains of the 28S nrRNA gene (LSU), the internal transcribed spacer region (ITS) of the nrDNA, and a fragment of the translation elongation factor 1-alpha (tef1) gene, we report the finding of three new species of the genus Murispora: Murispora navicularispora, which produces cinnamon-colored, broadly fusiform to navicular ascospores; Murispora fissilispora, which has as a remarkable characteristic the production of both sexual and asexual morphs in vitro; and Murispora asexualis, the unique species of the genus that lacks a sexual morph. As a consequence of the phylogenetic study, we introduce the new aero-aquatic genus Fouskomenomyces, with a new combination (Fouskomenomyces cupreorufescens, formerly Spirosphaera cupreorufescens as the type species of the genus) and a new species, Fouskomenomyces mimiticus; we propose the new combinations Murispora bromicola (formerly Pseudomassariosphaeria bromicola) and Murispora triseptata (formerly Pseudomassariosphaeria triseptata); and we resurrect Massariosphaeria grandispora, which is transferred to the family Lopiostomataceae.
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24
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Küngas K, Bahram M, Põldmaa K. Host tree organ is the primary driver of endophytic fungal community structure in a hemiboreal forest. FEMS Microbiol Ecol 2020; 96:5673485. [PMID: 31825516 DOI: 10.1093/femsec/fiz199] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2019] [Accepted: 12/10/2019] [Indexed: 01/21/2023] Open
Abstract
Despite numerous studies on plant endophytes, little is known about fungal communities associated with different aboveground tissues of living trees. We used high-throughput sequencing to compare the diversity and community structure of fungi inhabiting leaves, branches and trunks of Alnus incana and Corylus avellana growing at three hemiboreal forest sites. Our analysis revealed that tree organs are the main determinants of the structure of fungal communities, whereas the effects of host species and locality remained secondary and negligible, respectively. The structure of fungal communities in trunks was the most distinct compared to that in leaves and branches. The foliar fungal communities were more similar within than between individual trees, implying that certain fungi may grow through parts of the tree crown. The weak effect of locality compared to host organs and species identity suggests that the structural variation of fungal communities in the aboveground parts of trees depends mainly on deterministic factors rather than dispersal limitation.
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Affiliation(s)
- Kati Küngas
- Department of Botany, Institute of Ecology and Earth Sciences, University of Tartu, 40 Lai St., EE51005 Tartu, Estonia
| | - Mohammad Bahram
- Department of Ecology, Swedish University of Agricultural Sciences, Ulls väg 16, 756 51 Uppsala, Sweden
| | - Kadri Põldmaa
- Department of Botany, Institute of Ecology and Earth Sciences, University of Tartu, 40 Lai St., EE51005 Tartu, Estonia
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25
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Cafà G, Boufleur TR, Linhares de Castro RR, Massola NS, Baroncelli R. Genome Sequence Data of the Soybean Pathogen Stagonosporopsis vannaccii: A Resource for Studies on Didymellaceae Evolution. Mol Plant Microbe Interact 2020; 33:1022-1024. [PMID: 32364420 DOI: 10.1094/mpmi-01-20-0016-a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The genus Stagonosporopsis is classified within the Didymellaceae family and has around 40 associated species. Among them, several species are important plant pathogens responsible for significant losses in economically important crops worldwide. Stagonosporopsis vannaccii is a newly described species pathogenic to soybean. Here, we present the draft whole-genome sequence, gene prediction, and annotation of S. vannaccii isolate LFN0148 (also known as IMI 507030). To our knowledge, this is the first genome sequenced of this species and represents a new useful source for future research on fungal comparative genomics studies.
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Affiliation(s)
- Giovanni Cafà
- CABI Europe-UK, Bakeham Lane, Egham, Surrey TW20 9TY, U.K
| | - Thaís Regina Boufleur
- University of São Paulo, ESALQ, Department of Plant Pathology and Nematology, Piracicaba/SP, Brazil
| | | | - Nelson Sidnei Massola
- University of São Paulo, ESALQ, Department of Plant Pathology and Nematology, Piracicaba/SP, Brazil
| | - Riccardo Baroncelli
- Instituto Hispano-Luso de Investigaciones Agrarias (CIALE), University of Salamanca, Calle del Duero, 12; 37185 Villamayor (Salamanca), Spain
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26
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Shah RM, Williams AH, Hane JK, Lawrence JA, Farfan-Caceres LM, Debler JW, Oliver RP, Lee RC. Reference Genome Assembly for Australian Ascochyta rabiei Isolate ArME14. G3 (Bethesda) 2020; 10:2131-40. [PMID: 32345704 DOI: 10.1534/g3.120.401265] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Ascochyta rabiei is the causal organism of ascochyta blight of chickpea and is present in chickpea crops worldwide. Here we report the release of a high-quality PacBio genome assembly for the Australian A. rabiei isolate ArME14. We compare the ArME14 genome assembly with an Illumina assembly for Indian A. rabiei isolate, ArD2. The ArME14 assembly has gapless sequences for nine chromosomes with telomere sequences at both ends and 13 large contig sequences that extend to one telomere. The total length of the ArME14 assembly was 40,927,385 bp, which was 6.26 Mb longer than the ArD2 assembly. Division of the genome by OcculterCut into GC-balanced and AT-dominant segments reveals 21% of the genome contains gene-sparse, AT-rich isochores. Transposable elements and repetitive DNA sequences in the ArME14 assembly made up 15% of the genome. A total of 11,257 protein-coding genes were predicted compared with 10,596 for ArD2. Many of the predicted genes missing from the ArD2 assembly were in genomic regions adjacent to AT-rich sequence. We compared the complement of predicted transcription factors and secreted proteins for the two A. rabiei genome assemblies and found that the isolates contain almost the same set of proteins. The small number of differences could represent real differences in the gene complement between isolates or possibly result from the different sequencing methods used. Prediction pipelines were applied for carbohydrate-active enzymes, secondary metabolite clusters and putative protein effectors. We predict that ArME14 contains between 450 and 650 CAZymes, 39 putative protein effectors and 26 secondary metabolite clusters.
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27
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Song N, Geng Y, Li X. The Mitochondrial Genome of the Phytopathogenic Fungus Bipolaris sorokiniana and the Utility of Mitochondrial Genome to Infer Phylogeny of Dothideomycetes. Front Microbiol 2020; 11:863. [PMID: 32457727 PMCID: PMC7225605 DOI: 10.3389/fmicb.2020.00863] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2020] [Accepted: 04/09/2020] [Indexed: 12/01/2022] Open
Abstract
A number of species in Bipolaris are important plant pathogens. Due to a limited number of synapomorphic characters, it is difficult to perform species identification and to estimate phylogeny of Bipolaris based solely on morphology. In this study, we sequenced the complete mitochondrial genome of Bipolaris sorokiniana, and presented the detailed annotation of the genome. The B. sorokiniana mitochondrial genome is 137,775 bp long, and contains two ribosomal RNA genes, 12 core protein-coding genes, 38 tRNA genes. In addition, two ribosomal protein genes (rps3 gene and rps5 gene) and the fungal mitochondrial RNase P gene (rnpB) are identified. The large genome size is mostly determined by the presence of numerous intronic and intergenic regions. A total of 28 introns are inserted in eight core protein-coding genes. Together with the published mitochondrial genome sequences, we conducted a preliminary phylogenetic inference of Dothideomycetes under various datasets and substitution models. The monophyly of Capnodiales, Botryosphaeriales and Pleosporales are consistently supported in all analyses. The Venturiaceae forms an independent lineage, with a distant phylogenetic relationship to Pleosporales. At the family level, the Mycosphaerellaceae, Botryosphaeriaceae. Phaeosphaeriaceae, and Pleosporaceae are recognized in the majority of trees.
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Affiliation(s)
- Nan Song
- College of Plant Protection, Henan Agricultural University, Zhengzhou, China
| | - Yuehua Geng
- College of Plant Protection, Henan Agricultural University, Zhengzhou, China
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Prasad S, Khurana U, Karuna T, Brahmachari S, Sinha JK, Tandon A, Kapoor N. Fine needle aspiration of nodular cystic swelling showing a rare melanized fungus Medicopsis romeroi: A case report. Diagn Cytopathol 2020; 48:401-404. [PMID: 31930706 DOI: 10.1002/dc.24383] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2019] [Revised: 12/24/2019] [Accepted: 01/03/2020] [Indexed: 11/05/2022]
Abstract
A young woman on long term corticosteroid therapy presented with a discrete hyperpigmented nodular cystic swelling on her upper thigh to the buttock region. There was history of discharging sinuses however at presentation the lesion was painless nondischarging. The lesion was subjected to fine-needle aspiration. The cytological smears on routine and special stains showed branching, septate fungal hyphae present extracellularly and intracellularly. The background showed dense mixed inflammation and granulomatous inflammation. The aspirated material was further subjected to culture. A nonsporulating melanized fungus was obtained and a culture isolate was sent for molecular characterization. Medicopsis romeroi, a rare melanized fungus belonging to the order Pleosporales was isolated on Internal transcribed spacer sequencing.
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Affiliation(s)
- Shubhra Prasad
- Department of Pathology and Lab Medicine, AIIMS Bhopal, Bhopal, India
| | - Ujjawal Khurana
- Department of Pathology and Lab Medicine, AIIMS Bhopal, Bhopal, India
| | | | | | | | - Ashwani Tandon
- Department of Pathology and Lab Medicine, AIIMS Bhopal, Bhopal, India
| | - Neelkamal Kapoor
- Department of Pathology and Lab Medicine, AIIMS Bhopal, Bhopal, India
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29
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Knapp DG, Imrefi I, Boldpurev E, Csíkos S, Akhmetova G, Berek-Nagy PJ, Otgonsuren B, Kovács GM. Root-Colonizing Endophytic Fungi of the Dominant Grass Stipa krylovii From a Mongolian Steppe Grassland. Front Microbiol 2019; 10:2565. [PMID: 31781068 PMCID: PMC6861457 DOI: 10.3389/fmicb.2019.02565] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2019] [Accepted: 10/23/2019] [Indexed: 11/25/2022] Open
Abstract
In several terrestrial ecosystems such as grasslands, plants live together with various root-colonizing dark septate endophytes (DSEs), fungi that are relatively frequent colonizers of healthy belowground tissues of plants in these environments. They are important members of the plant microbiota and may have various effects on plant survival under different stress conditions; however, their general functions in relation to plants and the greater ecosystem remain elusive. Although an increasing number of studies has been published focusing on DSEs in Asian grasslands, our knowledge is limited. Especially in Mongolia, where the steppe region represents a significant area, information is not available on these root colonizers. In this study, we aimed to characterize DSEs of a common dominant gramineous plant species, Stipa krylovii in a semiarid grassland of Mongolia. Root samples were collected in a natural steppe and were processed for isolation of fungal endophytes. For molecular identification of the isolates, the internal transcribed spacer (ITS) region of the nrDNA was obtained for all the isolates investigated; furthermore, the partial translation elongation factor 1-α (TEF) gene and large subunit (LSU) and small subunit (SSU) of rDNA were also amplified and sequenced in case of representative isolates. In vitro tests were used to examine the rough symbiotic nature of the fungi, and root colonization was visualized. A majority of the 135 isolates examined in detail was found to belong to several orders of Ascomycota (110 isolates) and some to Basidiomycota (25 isolates). A significant number of the isolates represented presumably novel taxa, and dominant similarities of the lineages have been found with relatively frequent and known grass root endophytes of semiarid areas in other geographic regions. These endophytes included Periconia macrospinosa, Microdochium bolley, and Darksidea, the genus of which comprised one fourth of the isolates. We found numerous lineages, which have been detected not only from Asian steppe ecosystems, but also from prairies in North America and sandy grasslands in Europe. Therefore, our results strengthen the hypothesized worldwide presence of a common and dominant core group of a DSE community in arid and semiarid grasslands.
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Affiliation(s)
- Dániel G. Knapp
- Department of Plant Anatomy, Institute of Biology, Eötvös Loránd University, Budapest, Hungary
| | - Ildikó Imrefi
- Department of Plant Anatomy, Institute of Biology, Eötvös Loránd University, Budapest, Hungary
| | - Enkhtuul Boldpurev
- Department of Plant Anatomy, Institute of Biology, Eötvös Loránd University, Budapest, Hungary
| | - Sándor Csíkos
- Department of Plant Anatomy, Institute of Biology, Eötvös Loránd University, Budapest, Hungary
| | - Galiya Akhmetova
- Department of Plant Anatomy, Institute of Biology, Eötvös Loránd University, Budapest, Hungary
| | - Péter János Berek-Nagy
- Department of Plant Anatomy, Institute of Biology, Eötvös Loránd University, Budapest, Hungary
| | | | - Gábor M. Kovács
- Department of Plant Anatomy, Institute of Biology, Eötvös Loránd University, Budapest, Hungary
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30
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Vergara C, Araujo KEC, Sperandio MVL, Santos LA, Urquiaga S, Zilli JÉ. Dark septate endophytic fungi increase the activity of proton pumps, efficiency of 15N recovery from ammonium sulphate, N content, and micronutrient levels in rice plants. Braz J Microbiol 2019; 50:825-838. [PMID: 31090019 PMCID: PMC6863334 DOI: 10.1007/s42770-019-00092-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2019] [Accepted: 05/04/2019] [Indexed: 11/25/2022] Open
Abstract
Plants colonised by dark septate endophytic (DSE) fungi show increased uptake of nutrients available in the environment. The objective of the present study was to evaluate the impact of DSE fungi on the activity of proton pumps, nitrogen (N) recovery from ammonium sulphate, and nutrient accumulation in rice plants. Treatments consisted of non-inoculated plants and plants inoculated with two isolates of DSE fungi, A101 and A103. To determine N recovery from the soil, ammonium sulphate enriched with 15N was added to a non-sterile substrate while parameters associated with the activity of proton pumps and with NO3- uptake were determined in a sterile environment. The A101 and A103 fungal isolates colonised the roots of rice plants, promoting 15N uptake, growth, and accumulation of nutrients as compared with the mock control. A103 induced the expression of the plasma membrane H+-ATPase (PM H+-ATPase) isoforms OsA5 and OsA8, the activity of the PM H+-ATPase and H+-pyrophosphatase. Our results suggest that the inoculation of rice plants with DSE fungi represents a strategy to improve the N recovery from ammonium sulphate and rice plant growth through the induction of OsA5 and OsA8 isoforms and stimulation of the PM H+-ATPase and H+-pyrophosphatase.
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Affiliation(s)
- Carlos Vergara
- Universidade Federal Rural do Rio de Janeiro, Instituto de Agronomia, Seropédica, RJ, Brazil
| | | | | | - Leandro Azevedo Santos
- Universidade Federal Rural do Rio de Janeiro, Instituto de Agronomia, Seropédica, RJ, Brazil
| | - Segundo Urquiaga
- Embrapa Agrobiologia, BR 465, km 07, Seropédica, RJ, 23891-000, Brazil
| | - Jerri Édson Zilli
- Embrapa Agrobiologia, BR 465, km 07, Seropédica, RJ, 23891-000, Brazil.
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31
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Abstract
Fresh collections and their ascospore and conidial isolates backed up by type studies and molecular phylogenetic analyses of a multigene matrix of partial nuSSU-, complete ITS, partial LSU rDNA, rpb2, tef1 and tub2 sequences were used to evaluate the boundaries and species composition of Fenestella and related genera of the Cucurbitariaceae. Eight species, of which five are new, are recognised in Fenestella s.str., 13 in Parafenestella with eight new species and two in the new genus Synfenestella with one new species. Cucurbitaria crataegi is combined in Fenestella, C. sorbi in Synfenestella, Fenestella faberi and Thyridium salicis in Parafenestella. Cucurbitaria subcaespitosa is distinct from C. sorbi and combined in Neocucurbitaria. Fenestella minor is a synonym of Valsa tetratrupha, which is combined in Parafenestella. Cucurbitaria marchica is synonymous with Parafenestella salicis, Fenestella bavarica with S. sorbi, F. macrospora with F. media, and P. mackenziei is synonymous with P. faberi, and the latter is lectotypified. Cucurbitaria sorbi, C. subcaespitosa and Fenestella macrospora are lecto- and epitypified, Cucurbitaria crataegi, Fenestella media, F. minor and Valsa tetratrupha are epitypified in order to stabilise the names in their phylogenetic positions. A neotype is proposed for Thyridium salicis. A determinative key to species is given. Asexual morphs of fenestelloid fungi are phoma-like and do not differ from those of other representatives of the Cucurbitariaceae. The phylogenetic structure of the fenestelloid clades is complex and can only be resolved at the species level by protein-coding genes, such as rpb2, tef1 and tub2. All fungal species studied here occur, as far as has been possible to determine, on members of Diaporthales, most frequently on asexual and sexual morphs of Cytospora.
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Phukhamsakda C, Macabeo APG, Yuyama KT, Hyde KD, Stadler M. Biofilm Inhibitory Abscisic Acid Derivatives from the Plant-Associated Dothideomycete Fungus, Roussoella sp. Molecules 2018; 23:E2190. [PMID: 30200229 DOI: 10.3390/molecules23092190] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2018] [Revised: 08/24/2018] [Accepted: 08/29/2018] [Indexed: 12/19/2022] Open
Abstract
Roussoella species are well recorded from both monocotyledons and dicotyledons. As part of a research program to discover biologically active compounds from plant-associated Dothideomycetes in Thailand, the strain Roussoella sp. (MFLUCC 17-2059), which represents an undescribed species, was isolated from Clematis subumbellata Kurz, fermented in yeast-malt medium and explored for its secondary metabolite production. Bioassay-guided fractionation of the crude extract yielded the new abscisic acid derivative, roussoellenic acid (1), along with pestabacillin B (2), a related congener, and the cyclodipeptide, cyclo(S-Pro-S-Ile) (3). The structure of 1 was determined by 2D NMR spectroscopy and HR-ESIMS data analysis. Compounds 1 and 2 showed inhibitory activity on biofilm formation by Staphylococcus aureus. The biofilm formation of S. aureus was reduced to 34% at 16 µg/mL by roussoellenic acid (1), while pestabacillin B (2) only showed 36% inhibition at 256 µg/mL. In addition, compound 1 also had weak cytotoxic effects on L929 murine fibroblasts and human KB3-1 cancer cells.
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Hashimoto A, Hirayama K, Takahashi H, Matsumura M, Okada G, Chen C, Huang J, Kakishima M, Ono T, Tanaka K. Resolving the Lophiostoma bipolare complex: Generic delimitations within Lophiostomataceae. Stud Mycol 2018; 90:161-189. [PMID: 29632417 PMCID: PMC5889712 DOI: 10.1016/j.simyco.2018.03.001] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Lophiostoma bipolare was taxonomically revised based on the morphological observations and phylogenetic analyses of molecular data from nuclear rDNA SSU-ITS-LSU, TUB, tef1, and rpb2 genes. Twenty-nine strains were morphologically similar to Lo. bipolare. A total of 174 sequences were generated from the Lo. bipolare complex. Phylogenetic analyses based on TUB sequence revealed 11 distinct species within the Lo. bipolare complex. Morphological features of the ascospores and the anatomical structure of the ascomata from both field collections as well as axenic culture, which have been reported previously as variable features at intraspecific levels, were compared to evaluate the taxonomic reliability of these features. To clarify the generic position of the 11 species, phylogenetic analyses were done on SSU-ITS-LSU-tef1-rpb2 gene sequences. The Lo. bipolare complex shared phylogenetic relationships with Pseudolophiostoma and Vaginatispora, and formed an additional five distinct clades from other members of Lophiostomataceae. According to its phylogenetic position, Lo. bipolare sensu stricto was distantly related to Lophiostoma s. str., and formed an independent clade within Lophiostomataceae. Lophiostoma bipolare s. str. could be distinguished from the other lophiostomataceous genera by the clypeus around the ostiolar neck and by the thin and uniformly thick peridium. A novel genus described as Lentistoma was established to accommodate this species, and the epitypification of Lentistoma bipolare (basionym: Massarina bipolaris) was proposed. Other lineages of the Lo. bipolare complex could not be separated on the basis of the ascospore size and sheath variations, but were distinguished based on ascomatal features, such as the existence of the clypeus, brown hyphae surrounding the peridium, and the contexture of the peridium, which were stable indicators of generic boundaries in Lophiostomataceae. Four additional new genera with five new species were recognised based on these morphological differences: Crassiclypeus (C. aquaticus), Flabellascoma (F. cycadicola and F. minimum), Leptoparies (Lep. palmarum), and Pseudopaucispora (Pseudop. brunneospora). Three new species were added to Pseudolophiostoma (Pseudol. cornisporum, Pseudol. obtusisporum, and Pseudol. tropicum) and two new species were added to Vaginatispora (V. amygdali and V. scabrispora). The re-evaluation of the validity of several previously recognised genera resulted in the introduction of two new genera with new combinations for Lophiostoma pseudoarmatisporum as Parapaucispora pseudoarmatispora and Vaginatispora fuckelii as Neovaginatispora fuckelii.
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Key Words
- 1 new typification
- 21 new taxa
- Crassiclypeus A. Hashim., K. Hiray. & Kaz. Tanaka
- Crassiclypeus aquaticus A. Hashim., K. Hiray. & Kaz. Tanaka
- Flabellascoma A. Hashim., K. Hiray. & Kaz. Tanaka
- Flabellascoma cycadicola A. Hashim., K. Hiray. & Kaz. Tanaka
- Flabellascoma minimum A. Hashim., K. Hiray. & Kaz. Tanaka
- Freshwater fungi
- Lentistoma A. Hashim., K. Hiray. & Kaz. Tanaka
- Lentistoma bipolare (K.D. Hyde) A. Hashim., K. Hiray. & Kaz. Tanaka
- Leptoparies A. Hashim., K. Hiray. & Kaz. Tanaka
- Leptoparies palmarum A. Hashim., K. Hiray. & Kaz. Tanaka
- Massarina bipolaris K.D. Hyde
- Neovaginatispora A. Hashim., K. Hiray. & Kaz. Tanaka
- Neovaginatispora fuckelii (Sacc.) A. Hashim., K. Hiray. & Kaz. Tanaka
- Parapaucispora A. Hashim., K. Hiray. & Kaz. Tanaka
- Parapaucispora pseudoarmatispora (Hay. Takah. et al.) A. Hashim., K. Hiray. & Kaz. Tanaka
- Pleosporales
- Pseudolophiostoma cornisporum A. Hashim., K. Hiray. & Kaz. Tanaka
- Pseudolophiostoma obtusisporum A. Hashim., K. Hiray. & Kaz. Tanaka
- Pseudolophiostoma tropicum A. Hashim., K. Hiray. & Kaz. Tanaka
- Pseudopaucispora A. Hashim., K. Hiray. & Kaz. Tanaka
- Pseudopaucispora brunneospora A. Hashim., K. Hiray. & Kaz. Tanaka
- Species complex
- Systematics
- Taxonomy
- Vaginatispora amygdali A. Hashim., K. Hiray. & Kaz. Tanaka
- Vaginatispora scabrispora A. Hashim., K. Hiray. & Kaz. Tanaka
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Affiliation(s)
- A. Hashimoto
- Faculty of Agriculture and Life Sciences, Hirosaki University, 3 Bunkyo-cho, Hirosaki, Aomori 036-8561, Japan
- Research Fellow of the Japan Society for the Promotion of Science, 5-3-1 Kojimachi, Chiyoda-ku, Tokyo 102-0083, Japan
| | - K. Hirayama
- Apple Experiment Station, Aomori Prefectural Agriculture and Forestry Research Center, 24 Fukutami, Botandaira, Kuroishi, Aomori 036-0332, Japan
| | - H. Takahashi
- Faculty of Agriculture and Life Sciences, Hirosaki University, 3 Bunkyo-cho, Hirosaki, Aomori 036-8561, Japan
| | - M. Matsumura
- Faculty of Agriculture and Life Sciences, Hirosaki University, 3 Bunkyo-cho, Hirosaki, Aomori 036-8561, Japan
- The United Graduate School of Agricultural Sciences, Iwate University, 18–8 Ueda 3 chome, Morioka, Iwate 020-8550, Japan
| | - G. Okada
- Japan Collection of Microorganisms, RIKEN BioResource Center, 3-1-1 Koyadai, Tsukuba, Ibaraki 305-0074, Japan
| | - C.Y. Chen
- National Chung Hsing University, 145 Xingda Rd., South Dis., Taichung 402, Taiwan, ROC
| | - J.W. Huang
- College of Agriculture and Natural Resources, National Chung Hsing University, 250 Kuo-kuang Rd., Taichung 402, Taiwan, ROC
| | - M. Kakishima
- Engineering Research Center of Chinese Ministry of Education for Edible and Medicinal Fungi, Jilin Agricultural University, Changchun, Jilin Province 130118, China
- Faculty of Life and Environmental Sciences, University of Tsukuba, Ibaraki 305-8572, Japan
| | - T. Ono
- Ogasawara Subtropical Branch of Tokyo Metropolitan Agriculture and Forestry Research Center, Chichijima, Ogasawara-mura, Tokyo 100-2101, Japan
| | - K. Tanaka
- Faculty of Agriculture and Life Sciences, Hirosaki University, 3 Bunkyo-cho, Hirosaki, Aomori 036-8561, Japan
- The United Graduate School of Agricultural Sciences, Iwate University, 18–8 Ueda 3 chome, Morioka, Iwate 020-8550, Japan
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34
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Abstract
Fresh collections, type studies and molecular phylogenetic analyses of a multigene matrix of partial nuSSU-ITS-LSU rDNA, rpb2, tef1 and tub2 sequences were used to evaluate the boundaries of Cucurbitaria in a strict sense and of several related genera of the Cucurbitariaceae. Two species are recognised in Cucurbitaria and 19 in Neocucurbitaria. The monotypic genera Astragalicola, Cucitella, Parafenestella, Protofenestella, and Seltsamia are described as new. Fenestella is here included as its generic type F. fenestrata (= F. princeps), which is lecto- and epitypified. Fenestella mackenzei and F. ostryae are combined in Parafenestella. Asexual morphs of Cucurbitariaceae, where known, are all pyrenochaeta- or phoma-like. Comparison of the phylogenetic analyses of the ITS-LSU and combined matrices demonstrate that at least rpb2 sequences should be added whenever possible to improve phylogenetic resolution of the tree backbone; in addition, the tef1 introns should be added as well to improve delimitation of closely related species.
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Affiliation(s)
- W M Jaklitsch
- Institute of Forest Entomology, Forest Pathology and Forest Protection, Department of Forest and Soil Sciences, BOKU-University of Natural Resources and Life Sciences, Peter-Jordan-Straße 82/I, 1190 Wien, Austria.,Division of Systematic and Evolutionary Botany, Department of Botany and Biodiversity Research, University of Vienna, Rennweg 14, 1030 Wien, Austria
| | - J Checa
- Dpto. de Ciencias de la Vida, Facultad de Biología, Universidad de Alcalá, Alcalá de Henares, 28805 Madrid, Spain
| | - M N Blanco
- Dpto. de Ciencias de la Vida, Facultad de Biología, Universidad de Alcalá, Alcalá de Henares, 28805 Madrid, Spain
| | - I Olariaga
- Biochemistry and Molecular Biology, Universidad del País Vasco/Euskal Herriko Unibertsitatea, Leioa, Spain
| | - S Tello
- Paseo del Obispo 7, 23150 Valdepeñas de Jaén, Jaén, Spain
| | - H Voglmayr
- Division of Systematic and Evolutionary Botany, Department of Botany and Biodiversity Research, University of Vienna, Rennweg 14, 1030 Wien, Austria
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Valenzuela-Lopez N, Cano-Lira JF, Guarro J, Sutton DA, Wiederhold N, Crous PW, Stchigel AM. Coelomycetous Dothideomycetes with emphasis on the families Cucurbitariaceae and Didymellaceae. Stud Mycol 2018; 90:1-69. [PMID: 29255336 DOI: 10.1016/j.simyco.2017.11.003] [Citation(s) in RCA: 91] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
The taxonomy of the coelomycetes has undergone dramatic changes in recent years, but remains controversial due to the high number of taxa involved, their poor morphological differentiation, the rare occurrence of the sexual morphs, and rapid loss of fertility in vitro. In the present study, we revisited the families Cucurbitariaceae and Didymellaceae (Pleosporales, Dothideomycetes), which include numerous plant pathogens, endophytic species associated with a wide host range, and saprobes. The taxonomy of two of the most relevant genera, i.e. Phoma and Pyrenochaeta, remains ambiguous after several phylogenetic studies, and needs further revision. We have studied a total of 143 strains of coelomycetes from clinical or environmental origin, by combining the LSU, ITS, tub2 and rpb2 sequences for a multi-locus analysis and a detailed morphological comparison. The resulting phylogenetic tree revealed that some fungi previously considered as members of Cucurbitariaceae represented five different families, and four of them, Neopyrenochaetaceae, Parapyrenochaetaceae, Pseudopyrenochaetaceae and Pyrenochaetopsidaceae, are proposed here as new. Furthermore, 13 new genera, 28 new species, and 20 new combinations are proposed within the Pleosporineae. Moreover, four new typifications are introduced to stabilise the taxonomy of these fungi.
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Key Words
- Allocucurbitaria Valenzuela-Lopez, Stchigel, Guarro & Cano
- Allocucurbitaria botulispora Valenzuela-Lopez, Stchigel, Guarro & Cano
- Allophoma cylindrispora Valenzuela-Lopez, Cano, Guarro & Stchigel
- Cu. pneumoniae Valenzuela-Lopez, Stchigel, Crous, Guarro & Cano
- Cucurbitariaceae
- Cumuliphoma Valenzuela-Lopez, Stchigel, Crous, Guarro & Cano
- Cumuliphoma indica Valenzuela-Lopez, Cano, Crous, Guarro & Stchigel
- Cumuliphoma omnivirens (Aveskamp et al.) Valenzuela-Lopez, Stchigel, Crous, Guarro & Cano
- D. keratinophila Valenzuela-Lopez, Cano, Guarro & Stchigel
- Didymella brunneospora Valenzuela-Lopez, Cano, Crous, Guarro & Stchigel
- Didymellaceae
- Ec. pomi (Horne) Valenzuela-Lopez, Cano, Crous, Guarro & Stchigel
- Ectophoma Valenzuela-Lopez, Cano, Crous, Guarro & Stchigel
- Ectophoma multirostrata (P.N. Mathur et al.) Valenzuela-Lopez, Cano, Crous, Guarro & Stchigel
- Ep. keratinophilum Valenzuela-Lopez, Cano, Guarro & Stchigel
- Ep. ovisporum Valenzuela-Lopez, Stchigel, Crous, Guarro & Cano
- Ep. pneumoniae Valenzuela-Lopez, Stchigel, Guarro & Cano
- Epicoccum catenisporum Valenzuela-Lopez, Stchigel, Crous, Guarro & Cano
- Epicoccum proteae (Crous) Valenzuela-Lopez, Stchigel, Crous, Guarro & Cano
- Juxtiphoma Valenzuela-Lopez, Cano, Crous, Guarro & Stchigel
- Juxtiphoma eupyrena (Sacc.) Valenzuela-Lopez, Cano, Crous, Guarro & Stchigel
- Multigene phylogeny
- Neoa. tardicrescens Valenzuela-Lopez, Cano, Crous, Guarro & Stchigel
- Neoascochyta cylindrispora Valenzuela-Lopez, Cano, Guarro & Stchigel
- Neocu. hakeae (Crous) Valenzuela-Lopez, Crous, Stchigel, Guarro & Cano
- Neocu. irregularis Valenzuela-Lopez, Cano, Guarro & Stchigel
- Neocu. keratinophila (Verkley et al.) Valenzuela-Lopez, Stchigel, Guarro & Cano
- Neocucurbitaria aquatica Valenzuela-Lopez, Crous, Stchigel, Guarro & Cano
- Neocucurbitaria cava (Schulzer) Valenzuela-Lopez, Crous, Stchigel, Guarro & Cano
- Neopy. inflorescentiae (Crous et al.) Valenzuela-Lopez, Crous, Stchigel, Guarro & Cano
- Neopy. telephoni (Rohit Sharma et al.) Valenzuela-Lopez, Crous, Stchigel, Guarro & Cano
- Neopyrenochaeta Valenzuela-Lopez, Crous, Stchigel, Guarro & Cano
- Neopyrenochaeta acicola (Moug. & Lév.) Valenzuela-Lopez, Crous, Stchigel, Guarro & Cano
- Neopyrenochaeta fragariae Valenzuela-Lopez, Crous, Stchigel, Guarro & Cano
- Neopyrenochaetaceae Valenzuela-Lopez, Crous, Cano, Guarro & Stchigel
- Neopyrenochaetopsis Valenzuela-Lopez, Cano, Guarro & Stchigel
- Neopyrenochaetopsis hominis Valenzuela-Lopez, Cano, Guarro & Stchigel
- New taxa
- Nothophoma variabilis Valenzuela-Lopez, Cano, Guarro & Stchigel
- Paracucurbitaria Valenzuela-Lopez, Stchigel, Guarro & Cano
- Paracucurbitaria corni (Bat. & A.F. Vital) Valenzuela-Lopez, Stchigel, Guarro & Cano
- Paracucurbitaria italica Valenzuela-Lopez, Crous, Stchigel, Guarro & Cano
- Parapy. protearum (Crous) Valenzuela-Lopez, Crous, Stchigel, Guarro & Cano
- Parapyrenochaeta Valenzuela-Lopez, Crous, Stchigel, Guarro & Cano
- Parapyrenochaeta acaciae (Crous et al.) Valenzuela-Lopez, Crous, Stchigel, Guarro & Cano
- Parapyrenochaetaceae Valenzuela-Lopez, Crous, Stchigel, Guarro & Cano
- Phoma
- Pleosporales
- Pleosporineae
- Pseudopyrenochaeta Valenzuela-Lopez, Crous, Stchigel, Guarro & Cano
- Pseudopyrenochaeta lycopersici (R.W. Schneid. & Gerlach) Valenzuela-Lopez, Crous, Stchigel, Guarro & Cano
- Pseudopyrenochaeta terrestris Valenzuela-Lopez, Crous, Cano, Guarro & Stchigel
- Pseudopyrenochaetaceae Valenzuela-Lopez, Crous, Stchigel, Guarro & Cano
- Py. botulispora Valenzuela-Lopez, Cano, Guarro & Stchigel
- Py. confluens Valenzuela-Lopez, Cano, Guarro & Stchigel
- Py. globosa Valenzuela-Lopez, Cano, Guarro & Stchigel
- Py. paucisetosa Valenzuela-Lopez, Cano, Guarro & Stchigel
- Py. setosissima Valenzuela-Lopez, Cano, Crous, Guarro & Stchigel
- Py. uberiformis Valenzuela-Lopez, Cano, Guarro & Stchigel
- Pyrenochaeta
- Pyrenochaetopsidaceae Valenzuela-Lopez, Crous, Cano, Guarro & Stchigel
- Pyrenochaetopsis
- Pyrenochaetopsis americana Valenzuela-Lopez, Cano, Guarro & Stchigel
- Remotididymella Valenzuela-Lopez, Crous, Cano, Guarro & Stchigel
- Remotididymella anthropophila Valenzuela-Lopez, Cano, Guarro & Stchigel
- Remotididymella destructiva (Plowr.) Valenzuela-Lopez, Cano, Crous, Guarro & Stchigel
- Similiphoma Valenzuela-Lopez, Crous, Cano, Guarro & Stchigel
- Similiphoma crystallifera (Gruyter et al.) Valenzuela-Lopez, Crous, Cano, Guarro & Stchigel
- Taxonomy
- Vacuiphoma Valenzuela-Lopez, Cano, Crous, Guarro & Stchigel
- Vacuiphoma bulgarica (Aveskamp et al.) Valenzuela-Lopez, Cano, Crous, Guarro & Stchigel
- Vacuiphoma oculihominis Valenzuela-Lopez, Stchigel, Guarro & Cano
- Xenodidymella saxea (Aveskamp et al.) Valenzuela-Lopez, Crous, Cano, Guarro & Stchigel
- Xenopyrenochaetopsis Valenzuela-Lopez, Crous, Stchigel, Guarro & Cano
- Xenopyrenochaetopsis pratorum (P.R. Johnst. & Boerema) Valenzuela-Lopez, Crous, Stchigel, Guarro & Cano
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Lourenço CCG, Alves JL, Guatimosim E, Colman A, Barreto RW. Bipolaris marantae sp. nov., A Novel Helminthosporoid Species Causing Foliage Blight of the Garden Plant Maranta leuconeura in Brazil. Mycobiology 2017; 45:123-128. [PMID: 29138616 PMCID: PMC5673507 DOI: 10.5941/myco.2017.45.3.123] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/17/2017] [Revised: 05/03/2017] [Accepted: 06/23/2017] [Indexed: 06/07/2023]
Abstract
A severe leaf spot, turning to foliage blight, was observed on leaves of Maranta leuconeura growing in a garden in Brazil (state of Rio de Janeiro) in 2015. A dematiaceous hyphomycete bearing a morphology typical of a helminthosporoid fungi was regularly found in association with diseased tissues. The fungus was isolated and pathogenicity was demonstrated through the completion of Koch's postulates. A morphology and molecular analysis led to the conclusion that the fungus belonged to the genus Bipolaris, which is characterized by having fusiform conidia, externally thickened and truncate hila and a bipolar pattern of germination. Additionally, homology of internal transcribed spacer and GAPDH sequences with sequences of other Bipolaris species, confirmed its generic placement. A phylogenetic study also indicated clearly that the fungus on M. leuconeura is phylogenetically distinct from related species of this genus, leading to the proposal of the new species Bipolaris marantae.
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Affiliation(s)
| | - Janaina Lana Alves
- Departamento de Fitopatologia, Universidade Federal de Viçosa, Viçosa 36570-900, MG, Brazil
| | - Eduardo Guatimosim
- Instituto de Ciências Biológicas, Universidade Federal do Rio Grande, São Lourenço do Sul, 96170-000, RS, Brazil
| | - Adans Colman
- Departamento de Fitopatologia, Universidade Federal de Viçosa, Viçosa 36570-900, MG, Brazil
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Wanasinghe DN, Hyde KD, Jeewon R, Crous PW, Wijayawardene NN, Jones EBG, Bhat DJ, Phillips AJL, Groenewald JZ, Dayarathne MC, Phukhamsakda C, Thambugala KM, Bulgakov TS, Camporesi E, Gafforov YS, Mortimer PE, Karunarathna SC. Phylogenetic revision of Camarosporium ( Pleosporineae, Dothideomycetes) and allied genera. Stud Mycol 2017; 87:207-256. [PMID: 28966419 PMCID: PMC5607397 DOI: 10.1016/j.simyco.2017.08.001] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
A concatenated dataset of LSU, SSU, ITS and tef1 DNA sequence data was analysed to investigate the taxonomic position and phylogenetic relationships of the genus Camarosporium in Pleosporineae (Dothideomycetes). Newly generated sequences from camarosporium-like taxa collected from Europe (Italy) and Russia form a well-supported monophyletic clade within Pleosporineae. A new genus Camarosporidiella and a new family Camarosporidiellaceae are established to accommodate these taxa. Four new species, Neocamarosporium korfii, N. lamiacearum, N. salicorniicola and N. salsolae, constitute a strongly supported clade with several known taxa for which the new family, Neocamarosporiaceae, is introduced. The genus Staurosphaeria based on S. lycii is resurrected and epitypified, and shown to accommodate the recently introduced genus Hazslinszkyomyces in Coniothyriaceae with significant statistical support. Camarosporium quaternatum, the type species of Camarosporium and Camarosporomyces flavigena cluster together in a monophyletic clade with significant statistical support and sister to the Leptosphaeriaceae. To better resolve interfamilial/intergeneric level relationships and improve taxonomic understanding within Pleosporineae, we validate Camarosporiaceae to accommodate Camarosporium and Camarosporomyces. The latter taxa along with other species are described in this study.
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Key Words
- Ca. aborescentis (Phukhams. et al.) Phukhams., Wanas. & K.D. Hyde
- Ca. arezzoensis (Tibpromma et al.) Wanas. & K.D. Hyde
- Ca. celtidis (Shear) Thambugala, Wanas. & K.D. Hyde
- Ca. clematidis (Wijayaw. et al.) Wijayaw., Wanas. & K.D. Hyde
- Ca. elongata (Fr.) Wanas., Wijayaw. & K.D. Hyde
- Ca. eufemiana Wanas., Camporesi & K.D. Hyde
- Ca. halimodendri Wanas., Bulgakov & K.D. Hyde
- Ca. italica Wanas., Camporesi & K.D. Hyde
- Ca. laburni (Pers.) Wanas., Bulgakov, Camporesi & K.D. Hyde
- Ca. laburnicola (R.H. Perera et al.) Wanas. & K.D. Hyde
- Ca. mackenziei Wanas., Bulgakov & K.D. Hyde
- Ca. melnikii Wanas., Bulgakov & K.D. Hyde
- Ca. mirabellensis Wanas., Camporesi & K.D. Hyde
- Ca. moricola (Chethana et al.) Wanas. & K.D. Hyde
- Ca. premilcurensis Wanas., Camporesi & K.D. Hyde
- Ca. robiniicola (Wijayaw. et al.) Wijayaw., Wanas. & K.D. Hyde
- Ca. schulzeri Wanas., Bulgakov & K.D. Hyde
- Ca. spartii (Trail) Wijayaw., Wanas. & K.D. Hyde
- Camarosporiaceae Wanas., K.D. Hyde & Crous
- Camarosporidiella Wanas., Wijayaw. & K.D. Hyde
- Camarosporidiella caraganicola (Phukhams. et al.) Phukhams., Wanas. & K.D. Hyde
- Camarosporidiella elaeagnicola Wanas., Bulgakov & K.D. Hyde
- Camarosporidiella: Ca.
- Camarosporidiellaceae Wanas., Wijayaw., Crous & K.D. Hyde
- Camarosporium: Cm.
- Camarosporomyces: Cs.
- Cucurbitaria: Cu
- Multigene phylogeny
- Muriformly septate
- N. lamiacearum Dayar., E.B.G. Jones & K.D. Hyde
- N. obiones (Jaap) Wanas. & K.D. Hyde
- N. salicorniicola Dayarathne, E.B.G. Jones & K.D. Hyde
- N. salsolae Wanas., Gafforov & K.D. Hyde
- Neocamarosporiaceae Wanas., Wijayaw., Crous & K.D. Hyde
- Neocamarosporium chenopodii (Ellis & Kellerm.) Wanas. & K.D. Hyde
- Neocamarosporium korfii Wanas., E.B.G. Jones & K.D. Hyde
- Pleomorphism
- Pleosporales
- Staurosphaeria aloes (Crous & M.J. Wingf.) Crous
- Staurosphaeria lycii Rabenh
- Staurosphaeria lyciicola (Crous & R.K. Schumach.) Crous, Wanas. & K.D. Hyde
- Staurosphaeria rhamnicola Wanas., Yu. Sh. Gafforov & K.D. Hyde
- Taxonomy
- Wanas. & K.D. Hyde
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Affiliation(s)
- D N Wanasinghe
- Key Laboratory for Plant Biodiversity and Biogeography of East Asia (KLPB), Kunming Institute of Botany, Botany, Chinese Academy of Science, Kunming 650201, Yunnan, China.,World Agro Forestry Centre, East and Central Asia, 132 Lanhei Road, Kunming 650201, Yunnan, China.,Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai 57100, Thailand.,School of Science, Mae Fah Luang University, Chiang Rai 57100, Thailand
| | - K D Hyde
- Key Laboratory for Plant Biodiversity and Biogeography of East Asia (KLPB), Kunming Institute of Botany, Botany, Chinese Academy of Science, Kunming 650201, Yunnan, China.,World Agro Forestry Centre, East and Central Asia, 132 Lanhei Road, Kunming 650201, Yunnan, China.,Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai 57100, Thailand.,School of Science, Mae Fah Luang University, Chiang Rai 57100, Thailand
| | - R Jeewon
- Department of Health Sciences, Faculty of Science, University of Mauritius, Reduit, Mauritius
| | - P W Crous
- Westerdijk Fungal Biodiversity Institute, P.O. Box 85167, 3508 AD Utrecht, The Netherlands.,Department of Microbiology and Plant Pathology, Forestry & Agricultural Biotechnology Institute, University of Pretoria, Pretoria, South Africa
| | - N N Wijayawardene
- Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai 57100, Thailand.,School of Science, Mae Fah Luang University, Chiang Rai 57100, Thailand
| | - E B G Jones
- Department of Botany and Microbiology, King Saudi University, Riyadh, Saudi Arabia
| | - D J Bhat
- No. 128/1-J, Azad Housing Society, Curca, Goa Velha, India
| | - A J L Phillips
- University of Lisbon, Faculty of Sciences, Biosystems and Integrative Sciences Institute (BioISI), Campo Grande 1749-016, Lisbon, Portugal
| | - J Z Groenewald
- Department of Health Sciences, Faculty of Science, University of Mauritius, Reduit, Mauritius
| | - M C Dayarathne
- Key Laboratory for Plant Biodiversity and Biogeography of East Asia (KLPB), Kunming Institute of Botany, Botany, Chinese Academy of Science, Kunming 650201, Yunnan, China.,World Agro Forestry Centre, East and Central Asia, 132 Lanhei Road, Kunming 650201, Yunnan, China.,Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai 57100, Thailand.,School of Science, Mae Fah Luang University, Chiang Rai 57100, Thailand
| | - C Phukhamsakda
- Key Laboratory for Plant Biodiversity and Biogeography of East Asia (KLPB), Kunming Institute of Botany, Botany, Chinese Academy of Science, Kunming 650201, Yunnan, China.,World Agro Forestry Centre, East and Central Asia, 132 Lanhei Road, Kunming 650201, Yunnan, China.,Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai 57100, Thailand.,School of Science, Mae Fah Luang University, Chiang Rai 57100, Thailand
| | - K M Thambugala
- Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai 57100, Thailand.,School of Science, Mae Fah Luang University, Chiang Rai 57100, Thailand
| | - T S Bulgakov
- Russian Research Institute of Floriculture and Subtropical Crops, Yana Fabritsiusa Street, 2/28, Krasnodar Region, Sochi 354002, Russia
| | - E Camporesi
- Società per gli Studi Naturalistici della Romagna, C.P. 144, Bagnacavallo, RA, Italy.,A.M.B. Gruppo Micologico Forlivese "Antonio Cicognani", Via Roma 18, Forlì, Italy.,A.M.B. Circolo Micologico "Giovanni Carini", C.P. 314, Brescia, Italy
| | - Y S Gafforov
- Laboratory of Mycology, Institute of Botany and Zoology, Academy of Sciences of the Republic of Uzbekistan, 232 Bogishamol Street, Tashkent 100053, Uzbekistan
| | - P E Mortimer
- Key Laboratory for Plant Biodiversity and Biogeography of East Asia (KLPB), Kunming Institute of Botany, Botany, Chinese Academy of Science, Kunming 650201, Yunnan, China.,World Agro Forestry Centre, East and Central Asia, 132 Lanhei Road, Kunming 650201, Yunnan, China
| | - S C Karunarathna
- Key Laboratory for Plant Biodiversity and Biogeography of East Asia (KLPB), Kunming Institute of Botany, Botany, Chinese Academy of Science, Kunming 650201, Yunnan, China.,World Agro Forestry Centre, East and Central Asia, 132 Lanhei Road, Kunming 650201, Yunnan, China
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Fraser M, Borman AM, Johnson EM. Rapid and Robust Identification of the Agents of Black-Grain Mycetoma by Matrix-Assisted Laser Desorption Ionization-Time of Flight Mass Spectrometry. J Clin Microbiol 2017; 55:2521-8. [PMID: 28592546 DOI: 10.1128/JCM.00417-17] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2017] [Accepted: 05/27/2017] [Indexed: 01/19/2023] Open
Abstract
Eumycetoma, a chronic fungal infection endemic in India, Indonesia, and parts of Africa and South and Central America, follows traumatic implantation of saprophytic fungi and frequently requires radical surgery or amputation in the absence of appropriate treatment. Fungal species that can cause black-grain mycetomas include Madurella spp., Falciformispora spp., Trematosphaeria grisea, Nigrograna mackinnonii, Pseudochaetosphaeronema larense, Medicopsis romeroi, and Emarellia spp. Rhytidhysteron rufulum and Parathyridaria percutanea cause similar subcutaneous infections, but these infections lack the draining sinuses and fungal grains characteristic of eumycetoma. Accurate identification of the agents of subcutaneous fungal infection is essential to guide appropriate antifungal therapy. Since phenotypic identification of the causative fungi is often difficult, time-consuming molecular approaches are currently required. In the study described here we evaluated whether matrix-assisted laser desorption ionization-time of flight (MALDI-TOF) mass spectrometry might allow the accurate identification of eumycetoma agents and related fungi. A panel of 57 organisms corresponding to 10 different species from confirmed cases of eumycetoma and subcutaneous pedal masses, previously formally identified by PCR amplification and sequencing of internal transcribed spacer 1 (ITS1), was employed. Representative isolates of each species were used to create reference MALDI-TOF spectra, which were then used for the identification of the remaining isolates in a user-blinded manner. Here, we demonstrate that MALDI-TOF mass spectrometry accurately identified all of the test isolates, with 100%, 90.4%, and 67.3% of isolates achieving log scores greater than 1.8, 1.9, and 2.0, respectively.
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39
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Abstract
Molecular phylogenetic analyses of a multigene matrix of partial nuSSU-ITS-LSU rDNA, rpb2 and tef1 sequences were performed to investigate the phylogenetic relationships of Corynespora, Exosporium and Helminthosporium species. Based on phylogenetic analyses and morphology, the genus Exosporium is synonymised with Helminthosporium, and the genus Corynespora is revealed as polyphyletic. Corynespora smithii is confirmed to be closely related to the generic type C. cassiicola and its morphology is described and illustrated. Exosporium tiliae, Corynespora caespitosa, C. endiandrae, C. leucadendri and C. olivacea are recognised in Helminthosporium, and Splanchnonema quercicola and S. kalakadense are combined in Helminthosporium. Based on pure culture studies and DNA sequence data, Massaria heterospora and Massarinula italica are shown to be the sexual morphs of Helminthosporium tiliae and H. microsorum, respectively. European accessions of Splanchnonema quercicola are recognised to differ from the North American type and are described as Helminthosporium quercinum. The sexual morph of H. oligosporum is recorded and described for the first time. The generic type of Helminthosporium, H. velutinum, is epitypified with a recent collection from the type host, Fagus sylvatica. Based on sequence data, Helminthosporium genistae is recognised as a distinct species. Several species for which subperidermal stromata have been reported are shown to be fungicolous on Diaporthales, the "stromata" representing aborted and transformed host stromata or conidiomata: H. caespitosum, H. microsorum, H. quercicola and H. quercinum on Coryneum spp.; H. hispanicum on conidiomata of Juglanconis juglandina; H. juglandinum on conidiomata of Diaporthe sp.; H. oligosporum and H. tiliae on Hercospora tiliae. The newly described H. austriacum is fungicolous on Amphisphaeria cf. millepunctata (Xylariales).
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40
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Qin Y, Pan X, Kubicek C, Druzhinina I, Chenthamara K, Labbé J, Yuan Z. Diverse Plant-Associated Pleosporalean Fungi from Saline Areas: Ecological Tolerance and Nitrogen-Status Dependent Effects on Plant Growth. Front Microbiol 2017; 8:158. [PMID: 28220113 PMCID: PMC5292420 DOI: 10.3389/fmicb.2017.00158] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2016] [Accepted: 01/20/2017] [Indexed: 12/14/2022] Open
Abstract
Similar to mycorrhizal mutualists, the rhizospheric and endophytic fungi are also considered to act as active regulators of host fitness (e.g., nutrition and stress tolerance). Despite considerable work in selected model systems, it is generally poorly understood how plant-associated fungi are structured in habitats with extreme conditions and to what extent they contribute to improved plant performance. Here, we investigate the community composition of root and seed-associated fungi from six halophytes growing in saline areas of China, and found that the pleosporalean taxa (Ascomycota) were most frequently isolated across samples. A total of twenty-seven representative isolates were selected for construction of the phylogeny based on the multi-locus data (partial 18S rDNA, 28S rDNA, and transcription elongation factor 1-α), which classified them into seven families, one clade potentially representing a novel lineage. Fungal isolates were subjected to growth response assays by imposing temperature, pH, ionic and osmotic conditions. The fungi had a wide pH tolerance, while most isolates showed a variable degree of sensitivity to increasing concentration of either salt or sorbitol. Subsequent plant-fungal co-culture assays indicated that most isolates had only neutral or even adverse effects on plant growth in the presence of inorganic nitrogen. Interestingly, when provided with organic nitrogen sources the majority of the isolates enhanced plant growth especially aboveground biomass. Most of the fungi preferred organic nitrogen over its inorganic counterpart, suggesting that these fungi can readily mineralize organic nitrogen into inorganic nitrogen. Microscopy revealed that several isolates can successfully colonize roots and form melanized hyphae and/or microsclerotia-like structures within cortical cells suggesting a phylogenetic assignment as dark septate endophytes. This work provides a better understanding of the symbiotic relationship between plants and pleosporalean fungi, and initial evidence for the use of this fungal group in benefiting plant production.
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Affiliation(s)
- Yuan Qin
- Institute of Subtropical Forestry, Chinese Academy of ForestryHangzhou, China
| | - Xueyu Pan
- Institute of Subtropical Forestry, Chinese Academy of ForestryHangzhou, China
| | - Christian Kubicek
- Research Area Biochemical Technology, Institute of Chemical Engineering, TU WienVienna, Austria
| | - Irina Druzhinina
- Research Area Biochemical Technology, Institute of Chemical Engineering, TU WienVienna, Austria
| | - Komal Chenthamara
- Research Area Biochemical Technology, Institute of Chemical Engineering, TU WienVienna, Austria
| | - Jessy Labbé
- Research Area Biochemical Technology, Institute of Chemical Engineering, TU WienVienna, Austria
| | - Zhilin Yuan
- Institute of Subtropical Forestry, Chinese Academy of ForestryHangzhou, China
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41
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Abstract
A multigene analysis of a combined ITS-LSU-SSU-rpb2-tef1 sequence data matrix was applied to infer the phylogenetic position of the genus Thyridaria in the Pleosporales. The generic type of Thyridaria, T. broussonetiae (syn. T. incrustans), is situated in a clade currently named Roussoellaceae, which becomes a synonym of Thyridariaceae. However, Thyridaria rubronotata does not belong to this clade, but is here recognised as Cyclothyriella rubronotata in its own family Cyclothyriellaceae. The Thyridariaceae contain the genera Thyridaria, Roussoella, Roussoellopsis, Neoroussoella and the new genus Parathyridaria. Roussoella acaciae is combined in Thyridaria and Roussoella percutaenea in Parathyridaria. Ohleria modesta and an additional new thyridaria-like genus, Hobus, are found to represent isolated lineages with unresolved phylogenetic affinites within the Pleosporales. For Ohleria the new family Ohleriaceae is established. Melanomma fuscidulum belongs to Nigrograna, and three new species are described in this genus. A strain named Biatriospora marina clusters with Nigrograna. Based on the newly recognised species in Nigrograna, morphology and ecology do in no way correlate among these genera, therefore we erect the new family Nigrogranaceae for Nigrograna and recommend to discontinue the use of the family name Biatriosporaceae until fresh material of B. marina becomes available for sequencing.
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Affiliation(s)
- W M Jaklitsch
- Institute of Forest Entomology Forest Pathology and Forest Protection, Dept. of Forest and Soil Sciences, BOKU-University of Natural Resources and Life Sciences, Hasenauerstraße 38, 1190 Vienna, Austria; Division of Systematic and Evolutionary Botany, Department of Botany and Biodiversity Research, University of Vienna, Rennweg 14, 1030 Wien, Austria
| | - H Voglmayr
- Division of Systematic and Evolutionary Botany, Department of Botany and Biodiversity Research, University of Vienna, Rennweg 14, 1030 Wien, Austria
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42
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Abstract
A multigene analysis of a combined ITS, LSU, SSU, rpb2 and tef1 sequence data matrix was applied to infer the phylogenetic position of the genus Teichospora in the Pleosporales, based on isolates from freshly collected material of the generic type T. trabicola and several additional species. Phylogenetic analyses revealed that Misturatosphaeria and Floricola are synonyms of Teichospora. All species of these genera and several species recently described in the genus Curreya belong to Teichospora and are thus combined in this genus. Also, Melanomma radicans and Ramusculicola thailandica are combined in Teichospora. The new name Teichospora parva is established for Misturatosphaeria minima. Three new species, T. melanommoides, T. pusilla and T. rubriostiolata, are described, and an expanded description of T. mariae is given. The family Teichosporaceae is currently confined to Teichospora, which can be phylogenetically clearly separated from Lophiostoma, the type genus of the Lophiostomataceae. The family name Floricolaceae is a synonym of Teichosporaceae. All species described here form apically free paraphyses among immature asci. This finding contradicts the current general dogma that apically free paraphyses are absent in the Pleosporales and questions the wide use of the term pseudoparaphysis.
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Vohník M, Borovec O, Kolařík M. Communities of Cultivable Root Mycobionts of the Seagrass Posidonia oceanica in the Northwest Mediterranean Sea Are Dominated by a Hitherto Undescribed Pleosporalean Dark Septate Endophyte. Microb Ecol 2016; 71:442-451. [PMID: 26093964 DOI: 10.1007/s00248-015-0640-5] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2015] [Accepted: 06/09/2015] [Indexed: 06/04/2023]
Abstract
Seagrasses, a small group of submerged marine macrophytes, were reported to lack mycorrhizae, i.e., the root-fungus symbioses most terrestrial plants use for nutrient uptake. On the other hand, several authors detected fungal endophytes in seagrass leaves, shoots, rhizomes, and roots, and an anatomically and morphologically unique dark septate endophytic (DSE) association has been recently described in the roots of the Mediterranean seagrass Posidonia oceanica. Nevertheless, the global diversity of seagrass mycobionts is not well understood, and it remains unclear what fungus forms the DSE association in P. oceanica roots. We isolated and determined P. oceanica root mycobionts from 11 localities in the northwest Mediterranean Sea with documented presence of the DSE association and compared our results with recent literature. The mycobiont communities were low in diversity (only three species), were dominated by a single yet unreported marine fungal species (ca. 90 % of the total 177 isolates), and lacked common terrestrial and freshwater root mycobionts. Our phylogenetic analysis suggests that the dominating species represents a new monotypic lineage within the recently described Aigialaceae family (Pleosporales, Ascomycota), probably representing a new genus. Most of its examined colonies developed from intracellular microsclerotia occupying host hypodermis and resembling microsclerotia of terrestrial DSE fungi. Biological significance of this hitherto overlooked seagrass root mycobiont remains obscure, but its presence across the NW Mediterranean Sea and apparent root intracellular lifestyle indicate an intriguing symbiotic relationship with the dominant Mediterranean seagrass. Our microscopic observations suggest that it may form the DSE association recently described in P. oceanica roots.
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Affiliation(s)
- Martin Vohník
- Department of Mycorrhizal Symbioses, Institute of Botany ASCR, Lesní 322, Průhonice, 25243, Czech Republic.
- Department of Experimental Plant Biology, Faculty of Science, Charles University in Prague, Viničná 5, Prague, 12843, Czech Republic.
| | - Ondřej Borovec
- Department of Mycorrhizal Symbioses, Institute of Botany ASCR, Lesní 322, Průhonice, 25243, Czech Republic
- Department of Experimental Plant Biology, Faculty of Science, Charles University in Prague, Viničná 5, Prague, 12843, Czech Republic
| | - Miroslav Kolařík
- Laboratory of Genetics, Physiology and Bioengineering of Fungi, Institute of Microbiology ASCR, Vídeňská 1083, Prague, 14200, Czech Republic
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Ahmed SA, de Hoog GS, Stevens DA, Fahal AH, van de Sande WWJ. In vitro antifungal susceptibility of coelomycete agents of black grain eumycetoma to eight antifungals. Med Mycol 2015; 53:295-301. [PMID: 25631481 DOI: 10.1093/mmy/myu098] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Fungal mycetoma (eumycetoma) represents one of the most difficult infections to appropriately manage. The current recommended treatment is based on extensive surgical debridement combined with prolonged antifungal therapy with ketoconazole or itraconazole. Despite the different phylogenetic positions of black-grain eumycetoma species, they are all treated with the same antifungal agents. The in vitro antifungal susceptibility of coelomycetous eumycetoma agents in the order of Pleosporales presently is largely unknown. Here we determined the in vitro activity of eight antifungal agents against seven species causing human eumycetoma using the Sensititre YeastOne method. High minimum inhibitory concentrations (MICs) were found with fluconazole, caspofungin, flucytosine, and amphotericin B. Voriconazole and posaconazole were found to be active against all species tested. Of the species included in the investigation, MICs of Medicopsis romeroi differed from the rest of the mycetoma causative agents belonging to the order of the Pleosporales. We found significantly lower MICs for amphotericin B and significantly higher MICs for fluconazole, ketoconazole, and itraconazole against this species. Our results emphasised that identification of black grain mycetoma agent is important as well as performing susceptibility testing before starting of antifungal treatment.
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Affiliation(s)
- Sarah Abdalla Ahmed
- Faculty of Medical Laboratory Sciences, University of Khartoum, Khartoum, Sudan Centraalbureau voor Schimmelcultures KNAW Fungal Biodiversity Centre, Utrecht, The Netherlands Institute for Biodiversity and Ecosystem Dynamics, University of Amsterdam, The Netherlands
| | - G Sybren de Hoog
- Centraalbureau voor Schimmelcultures KNAW Fungal Biodiversity Centre, Utrecht, The Netherlands Institute for Biodiversity and Ecosystem Dynamics, University of Amsterdam, The Netherlands Peking University Health Science Center, Research Center for Medical Mycology, Beijing, China, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China, Shanghai Institute of Medical Mycology, Changzheng Hospital, Second Military Medical University, Shanghai, China, Basic Pathology Department, Federal University of Paraná State, Curitiba, Paraná, Brazil, King Abdulaziz University, Jeddah, Saudi Arabia
| | - David A Stevens
- California Institute for Medical Research, and Division of Infectious Diseases, Department of Medicine, Stanford University Medical School, San Jose and Stanford, California
| | - Ahmed H Fahal
- Mycetoma Research Centre, University of Khartoum, Khartoum, Sudan
| | - Wendy W J van de Sande
- ErasmusMC, Department of Medical Microbiology and Infectious Diseases, Rotterdam, The Netherlands
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Trakunyingcharoen T, Lombard L, Groenewald JZ, Cheewangkoon R, To-Anun C, Alfenas AC, Crous PW. Mycoparasitic species of Sphaerellopsis, and allied lichenicolous and other genera. IMA Fungus 2014; 5:391-414. [PMID: 25734030 PMCID: PMC4329322 DOI: 10.5598/imafungus.2014.05.02.05] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2014] [Accepted: 11/11/2014] [Indexed: 10/28/2022] Open
Abstract
Species of Sphaerellopsis (sexual morph Eudarluca) are well-known cosmopolitan mycoparasites occurring on a wide range of rusts. Although their potential role as biocontrol agents has received some attention, the molecular phylogeny of the genus has never been resolved. Based on morphology and DNA sequence data of the large subunit nuclear ribosomal RNA gene (LSU, 28S) and the internal transcribed spacers (ITS) and 5.8S rRNA gene of the nrDNA operon, the genus Sphaerellopsis is shown to belong to Leptosphaeriaceae in Dothideomycetes. Sphaerellopsis is circumscribed, and the sexually typified generic name Eudarluca treated as a synonym on the basis that Sphaerellopsis is more commonly used in literature, is the older generic name, and is the morph commonly encountered by plant pathologists in the field. A neotype is designated for Sphaerellopsis filum, and two new species are introduced, S. macroconidialis and S. paraphysata spp. nov. Species previously incorrectly placed in Sphaerellopsis are allocated to Neosphaerellopsis gen. nov. as N. thailandica, and to the genus Acrocalymma, as A. fici. The genus Rhizopycnis is nestled among species of Acrocalymma, and reduced to synonymy based on its morphology and DNA phylogeny, while Acrocalymmaceae is introduced as novel family to accommodate members of this genus in the Dothideomycetes. Furthermore, Sphaerellopsis proved to be phylogenetically closely allied to a lichenicolous complex of phoma-like taxa, for which the new genera Diederichomyces and Xenophoma are established. Several new combinations are introduced, namely D. xanthomendozae, D. ficuzzae, D. caloplacae, D. cladoniicola, D. foliaceiphila, and X. puncteliae combs. nov, while Paraphaeosphaeria parmeliae sp. nov. is newly described.
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Affiliation(s)
- Thippawan Trakunyingcharoen
- Department of Entomology and Plant Pathology, Faculty of Agriculture, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Lorenzo Lombard
- CBS-KNAW Fungal Biodiversity Centre, Uppsalalaan 8, 3584 CT Utrecht, The Netherlands
| | - Johannes Z Groenewald
- CBS-KNAW Fungal Biodiversity Centre, Uppsalalaan 8, 3584 CT Utrecht, The Netherlands
| | - Ratchadawan Cheewangkoon
- Department of Entomology and Plant Pathology, Faculty of Agriculture, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Chaiwat To-Anun
- Department of Entomology and Plant Pathology, Faculty of Agriculture, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Acelino C Alfenas
- Department of Plant Pathology, Universidade Federal de Viçosa, Viçosa, MG, 36570-000, Brazil
| | - Pedro W Crous
- CBS-KNAW Fungal Biodiversity Centre, Uppsalalaan 8, 3584 CT Utrecht, The Netherlands ; Forestry and Agricultural Biotechnology Institute (FABI), University of Pretoria, Pretoria 0002, South Africa ; Wageningen University and Research Centre (WUR), Laboratory of Phytopathology, Droevendaalsesteeg 1, 6708 PB Wageningen, The Netherlands
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Ahmed SA, van de Sande WW, Stevens DA, Fahal A, van Diepeningen AD, Menken SB, de Hoog GS. Revision of agents of black-grain eumycetoma in the order Pleosporales. Persoonia 2014; 33:141-54. [PMID: 25737597 DOI: 10.3767/003158514X684744] [Citation(s) in RCA: 84] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/30/2013] [Accepted: 02/25/2014] [Indexed: 11/25/2022]
Abstract
Eumycetoma is a chronic fungal infection characterised by large subcutaneous masses and the presence of sinuses discharging coloured grains. The causative agents of black-grain eumycetoma mostly belong to the orders Sordariales and Pleosporales. The aim of the present study was to clarify the phylogeny and taxonomy of pleosporalean agents, viz. Madurella grisea, Medicopsis romeroi (syn.: Pyrenochaeta romeroi), Nigrograna mackinnonii (syn. Pyrenochaeta mackinnonii), Leptosphaeriasenegalensis, L. tompkinsii, and Pseudochaetosphaeronema larense. A phylogenetic analysis based on five loci was performed: the Internal Transcribed Spacer (ITS), large (LSU) and small (SSU) subunit ribosomal RNA, the second largest RNA polymerase subunit (RPB2), and translation elongation factor 1-alpha (TEF1) gene. In addition, the morphological and physiological characteristics were determined. Three species were well-resolved at the family and genus level. Madurella grisea, L. senegalensis, and L. tompkinsii were found to belong to the family Trematospheriaceae and are reclassified as Trematosphaeria grisea comb. nov., Falciformispora senegalensis comb. nov., and F. tompkinsii comb. nov. Medicopsis romeroi and Pseudochaetosphaeronema larense were phylogenetically distant and both names are accepted. The genus Nigrograna is reduced to synonymy of Biatriospora and therefore N. mackinnonii is reclassified as B.mackinnonii comb. Nov. Mycetoma agents in Pleosporales were phylogenetically quite diverse despite their morphological similarity in the formation of pycnidia, except for the ascosporulating genus Falciformispora (formerly in Leptosphaeria). Most of the species diagnosed from human mycetoma were found to be related to waterborne or marine fungi, suggesting an association of the virulence factors with oligotrophism or halotolerance.
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Abstract
The genus Bipolaris includes important plant pathogens with worldwide distribution. Species recognition in the genus has been uncertain due to the lack of molecular data from ex-type cultures as well as overlapping morphological characteristics. In this study, we revise the genus Bipolaris based on DNA sequence data derived from living cultures of fresh isolates, available ex-type cultures from worldwide collections and observation of type and additional specimens. Combined analyses of ITS, GPDH and TEF gene sequences were used to reconstruct the molecular phylogeny of the genus Bipolaris for species with living cultures. The GPDH gene is determined to be the best single marker for species of Bipolaris. Generic boundaries between Bipolaris and Curvularia are revised and presented in an updated combined ITS and GPDH phylogenetic tree. We accept 47 species in the genus Bipolaris and clarify the taxonomy, host associations, geographic distributions and species' synonymies. Modern descriptions and illustrations are provided for 38 species in the genus with notes provided for the other taxa when recent descriptions are available. Bipolaris cynodontis, B. oryzae, B. victoriae, B. yamadae and B. zeicola are epi- or neotypified and a lectotype is designated for B. stenospila. Excluded and doubtful species are listed with notes on taxonomy and phylogeny. Seven new combinations are introduced in the genus Curvularia to accomodate the species of Bipolaris transferred based on the phylogenetic analysis. A taxonomic key is provided for the morphological identification of species within the genus.
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Affiliation(s)
- D.S. Manamgoda
- Key Laboratory for Plant Biodiversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Science, Kunming 650201, Yunnan, China
- World Agro-forestry Centre, East and Central Asia, Kunming 650201, China
- Systematic Mycology and Microbiology Laboratory, United States Department of Agriculture, Agricultural Research Service, Beltsville 20705, MA, USA
| | - A.Y. Rossman
- Systematic Mycology and Microbiology Laboratory, United States Department of Agriculture, Agricultural Research Service, Beltsville 20705, MA, USA
| | - L.A. Castlebury
- Systematic Mycology and Microbiology Laboratory, United States Department of Agriculture, Agricultural Research Service, Beltsville 20705, MA, USA
| | - P.W. Crous
- CBS-KNAW Fungal Biodiversity Centre, P.O. Box 85167, 3508 AD Utrecht, The Netherlands
- Forestry and Agricultural Biotechnology Institute (FABI), University of Pretoria, Pretoria 0002, South Africa
| | - H. Madrid
- CBS-KNAW Fungal Biodiversity Centre, P.O. Box 85167, 3508 AD Utrecht, The Netherlands
- Center for Genomics and Bioinformatics and Medicine Faculty, Mayor University, Camino La Piramide 5750, Huechuraba, Santiago, Chile
| | - E. Chukeatirote
- Institute of Excellence in Fungal Research, School of Science, Mae Fah Luang University, Chiang Rai 57100, Thailand
| | - K.D. Hyde
- Key Laboratory for Plant Biodiversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Science, Kunming 650201, Yunnan, China
- World Agro-forestry Centre, East and Central Asia, Kunming 650201, China
- Institute of Excellence in Fungal Research, School of Science, Mae Fah Luang University, Chiang Rai 57100, Thailand
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Ahmed SA, Stevens DA, van de Sande WWJ, Meis JF, de Hoog GS. Roussoella percutanea, a novel opportunistic pathogen causing subcutaneous mycoses. Med Mycol 2014; 52:689-98. [PMID: 24969729 DOI: 10.1093/mmy/myu035] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
We report the isolation of a novel agent of subcutaneous mycosis from a 45-year-old Indian male immigrant in the United States. Phylogenetic analysis of partial small ribosomal subunit and large ribosomal subunit, internal transcribed spacer, partial translation elongation factor (TEF1), and RNA polymerase second largest subunit (rPB2) loci revealed that the strain was identical to another isolate previously reported as "Madurella mycetomatis." Both strains clustered in the order Pleosporales, nested in the family Arthopyreniaceae/Roussoellaceae. The fungus differed from known species and hence a new taxon, Roussoella percutanea, is introduced, typified by a strain that showed delayed production of pycnidial conidiomata. Antifungal susceptibility testing suggested that the new species is resistant to echinocandins and flucytosine, with variable results with azoles and amphotericin B.
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Affiliation(s)
- Sarah A Ahmed
- Faculty of Medical Laboratory Sciences, University of Khartoum, Khartoum, Sudan Centraalbureau voor Schimmelcultures KNAW Fungal Biodiversity Centre, Utrecht, The Netherlands Institute for Biodiversity and Ecosystem Dynamics, University of Amsterdam, The Netherlands
| | - David A Stevens
- California Institute for Medical Research, San Jose, and Division of Infectious Diseases, Department of Medicine, Stanford University School of Medicine, Stanford, California, USA
| | - Wendy W J van de Sande
- Erasmus MC, Department of Medical Microbiology and Infectious Diseases, Rotterdam, The Netherlands
| | - Jacques F Meis
- Department of Medical Microbiology and Infectious Diseases, Canisius Wilhelmina Hospital, Nijmegen, The Netherlands Department of Medical Microbiology, Radboud University Medical Center, Nijmegen, The Netherlands
| | - G S de Hoog
- Centraalbureau voor Schimmelcultures KNAW Fungal Biodiversity Centre, Utrecht, The Netherlands Institute for Biodiversity and Ecosystem Dynamics, University of Amsterdam, The Netherlands Peking University Health Science Center, Research Center for Medical Mycology, Beijing, China; Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China; Shanghai Institute of Medical Mycology, Changzheng Hospital, Second Military Medical University, Shanghai, China; Basic Pathology Department, Federal University of Paraná State, Curitiba, Paraná, Brazil; King Abdulaziz University, Jeddah, Saudi Arabia
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Abstract
Septoria is a large genus of asexual morphs of Ascomycota causing leaf spot diseases of many cultivated and wild plants. Host specificity has long been a decisive criterium in species delimitation in Septoria, mainly because of the paucity of useful morphological characters and the high level of variation therein. This study aimed at improving the species delimitation of Septoria by adopting a polyphasic approach, including multilocus DNA sequencing and morphological analyses on the natural substrate and in culture. To this end 365 cultures preserved in CBS, Utrecht, The Netherlands, among which many new isolates obtained from fresh field specimens were sequenced. Herbarium material including many types was also studied. Full descriptions of the morphology in planta and in vitro are provided for 57 species. DNA sequences were generated for seven loci, viz. nuclear ITS and (partial) LSU ribosomal RNA genes, RPB2, actin, calmodulin, Btub, and EF. The robust phylogeny inferred showed that the septoria-like fungi are distributed over three main clades, establishing the genera Septoria s. str., Sphaerulina, and Caryophylloseptoria gen. nov. Nine new combinations and one species, Sphaerulina tirolensis sp. nov. were proposed. It is demonstrated that some species have wider host ranges than expected, including hosts from more than one family. Septoria protearum, previously only associated with Proteaceae was found to be also associated with host plants from six additional families of phanerogams and cryptogams. To our knowledge this is the first study to provide DNA-based evidence that multiple family-associations occur for a single species in Septoria. The distribution of host families over the phylogenetic tree showed a highly dispersed pattern for 10 host plant families, providing new insight into the evolution of these fungi. It is concluded that trans-family host jumping is a major force driving the evolution of Septoria and Sphaerulina.
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Affiliation(s)
- G J M Verkley
- CBS-KNAW Fungal Biodiversity Centre, Upssalalaan 8, 3584 CT, Utrecht, the Netherlands
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Abstract
UNLABELLED Septoria represents a genus of plant pathogenic fungi with a wide geographic distribution, commonly associated with leaf spots and stem cankers of a broad range of plant hosts. A major aim of this study was to resolve the phylogenetic generic limits of Septoria, Stagonospora, and other related genera such as Sphaerulina, Phaeosphaeria and Phaeoseptoria using sequences of the the partial 28S nuclear ribosomal RNA and RPB2 genes of a large set of isolates. Based on these results Septoria is shown to be a distinct genus in the Mycosphaerellaceae, which has mycosphaerella-like sexual morphs. Several septoria-like species are now accommodated in Sphaerulina, a genus previously linked to this complex. Phaeosphaeria (based on P. oryzae) is shown to be congeneric with Phaeoseptoria (based on P. papayae), which is reduced to synonymy under the former. Depazea nodorum (causal agent of nodorum blotch of cereals) and Septoria avenae (causal agent of avenae blotch of barley and rye) are placed in a new genus, Parastagonospora, which is shown to be distinct from Stagonospora (based on S. paludosa) and Phaeosphaeria. Partial nucleotide sequence data for five gene loci, ITS, LSU, EF-1α, RPB2 and Btub were generated for all of these isolates. A total of 47 clades or genera were resolved, leading to the introduction of 14 new genera, 36 new species, and 19 new combinations. TAXONOMIC NOVELTIES New genera - Acicuseptoria Quaedvlieg, Verkley & Crous, Cylindroseptoria Quaedvlieg, Verkley & Crous, Kirstenboschia Quaedvlieg, Verkley & Crous, Neoseptoria Quaedvlieg, Verkley & Crous, Neostagonospora Quaedvlieg, Verkley & Crous, Parastagonospora Quaedvlieg, Verkley & Crous, Polyphialoseptoria Quaedvlieg, R.W. Barreto, Verkley & Crous, Ruptoseptoria Quaedvlieg, Verkley & Crous, Septorioides Quaedvlieg, Verkley & Crous, Setoseptoria Quaedvlieg, Verkley & Crous, Stromatoseptoria Quaedvlieg, Verkley & Crous, Vrystaatia Quaedvlieg, W.J. Swart, Verkley & Crous, Xenobotryosphaeria Quaedvlieg, Verkley & Crous, Xenoseptoria Quaedvlieg, H.D. Shin, Verkley & Crous. New species - Acicuseptoria rumicis Quaedvlieg, Verkley & Crous, Caryophylloseptoria pseudolychnidis Quaedvlieg, H.D. Shin, Verkley & Crous, Coniothyrium sidae Quaedvlieg, Verkley, R.W. Barreto & Crous, Corynespora leucadendri Quaedvlieg, Verkley & Crous, Cylindroseptoria ceratoniae Quaedvlieg, Verkley & Crous, Cylindroseptoria pistaciae Quaedvlieg, Verkley & Crous, Kirstenboschia diospyri Quaedvlieg, Verkley & Crous, Neoseptoria caricis Quaedvlieg, Verkley & Crous, Neostagonospora caricis Quaedvlieg, Verkley & Crous, Neostagonospora elegiae Quaedvlieg, Verkley & Crous, Paraphoma dioscoreae Quaedvlieg, H.D. Shin, Verkley & Crous, Parastagonospora caricis Quaedvlieg, Verkley & Crous, Parastagonospora poae Quaedvlieg, Verkley & Crous, Phlyctema vincetoxici Quaedvlieg, Verkley & Crous, Polyphialoseptoria tabebuiae-serratifoliae Quaedvlieg, Alfenas & Crous, Polyphialoseptoria terminaliae Quaedvlieg, R.W. Barreto, Verkley & Crous, Pseudoseptoria collariana Quaedvlieg, Verkley & Crous, Pseudoseptoria obscura Quaedvlieg, Verkley & Crous, Sclerostagonospora phragmiticola Quaedvlieg, Verkley & Crous, Septoria cretae Quaedvlieg, Verkley & Crous, Septoria glycinicola Quaedvlieg, H.D. Shin, Verkley & Crous, Septoria oenanthicola Quaedvlieg, H.D. Shin, Verkley & Crous, Septoria pseudonapelli Quaedvlieg, H.D. Shin, Verkley & Crous, Setophoma chromolaenae Quaedvlieg, Verkley, R.W. Barreto & Crous, Setoseptoria phragmitis Quaedvlieg, Verkley & Crous, Sphaerulina amelanchier Quaedvlieg, Verkley & Crous, Sphaerulina pseudovirgaureae Quaedvlieg, Verkley & Crous, Sphaerulina viciae Quaedvlieg, H.D. Shin, Verkley & Crous, Stagonospora duoseptata Quaedvlieg, Verkley & Crous, Stagonospora perfecta Quaedvlieg, Verkley & Crous, Stagonospora pseudocaricis Quaedvlieg, Verkley, Gardiennet & Crous, Stagonospora pseudovitensis Quaedvlieg, Verkley & Crous, Stagonospora uniseptata Quaedvlieg, Verkley & Crous, Vrystaatia aloeicola Quaedvlieg, Verkley, W.J. Swart & Crous, Xenobotryosphaeria calamagrostidis Quaedvlieg, Verkley & Crous, Xenoseptoria neosaccardoi Quaedvlieg, H.D. Shin, Verkley & Crous. New combinations - Parastagonospora avenae (A.B. Frank) Quaedvlieg, Verkley & Crous, Parastagonospora nodorum (Berk.) Quaedvlieg, Verkley & Crous, Phaeosphaeria papayae (Speg.) Quaedvlieg, Verkley & Crous, Pseudocercospora domingensis (Petr. & Cif.) Quaedvlieg, Verkley & Crous, Ruptoseptoria unedonis (Roberge ex Desm.) Quaedvlieg, Verkley & Crous, Septorioides pini-thunbergii (S. Kaneko) Quaedvlieg, Verkley & Crous, Sphaerulina abeliceae (Hiray.) Quaedvlieg, Verkley & Crous, Sphaerulina azaleae (Voglino) Quaedvlieg, Verkley & Crous, Sphaerulina berberidis (Niessl) Quaedvlieg, Verkley & Crous, Sphaerulina betulae (Pass.) Quaedvlieg, Verkley & Crous, Sphaerulina cercidis (Fr.) Quaedvlieg, Verkley & Crous, Sphaerulina menispermi (Thüm.) Quaedvlieg, Verkley & Crous, Sphaerulina musiva (Peck) Quaedvlieg, Verkley & Crous, Sphaerulina oxyacanthae (Kunze & J.C. Schmidt) Quaedvlieg, Verkley & Crous, Sphaerulina patriniae (Miura) Quaedvlieg, Verkley & Crous, Sphaerulina populicola (Peck) Quaedvlieg, Verkley & Crous, Sphaerulina quercicola (Desm.) Quaedvlieg, Verkley & Crous, Sphaerulina rhabdoclinis (Butin) Quaedvlieg, Verkley & Crous, Stromatoseptoria castaneicola (Desm.) Quaedvlieg, Verkley & Crous. Typifications: Epitypifications - Phaeosphaeria oryzae I. Miyake, Phaeoseptoria papayae Speg.; Neotypification - Hendersonia paludosa Sacc. & Speg.
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Affiliation(s)
- W Quaedvlieg
- CBS-KNAW Fungal Biodiversity Centre, Uppsalalaan 8, 3584 CT Utrecht, The Netherlands ; Wageningen University and Research Centre (WUR), Laboratory of Phytopathology, Droevendaalsesteeg 1, 6708 PB Wageningen, The Netherlands; Microbiology, Department of Biology, Utrecht University, Padualaan 8, 3584 CH Utrecht, the Netherlands
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