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Raymundo T, Valenzuela R, Martínez-González CR, García-Jiménez J, Cobos-Villagrán A, Sánchez-Flores M, de la Fuente J, Martínez-Pineda M, Pérez-Valdespino A, Ramírez-Martínez JC, Luna-Vega I. New Ascomycetes from the Mexican Tropical Montane Cloud Forest. J Fungi (Basel) 2023; 9:933. [PMID: 37755041 PMCID: PMC10532444 DOI: 10.3390/jof9090933] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2023] [Revised: 08/15/2023] [Accepted: 09/01/2023] [Indexed: 09/28/2023] Open
Abstract
The tropical montane cloud forest is the most diverse and threatened vegetation type in Mexico. In the last decade, the number of described Ascomycetes species has notably increased, reaching more than 1300 species. This study describes six new species based on their molecular and morphological characteristics. Our results suggest that Mexico has the highest number of described species in the Neotropics. However, many other Mexican lineages still need to be described.
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Affiliation(s)
- Tania Raymundo
- Instituto Politécnico Nacional, Escuela Nacional de Ciencias Biológicas, Departamento de Botánica, Laboratorio de Micología, Mexico City 11340, Mexico; (T.R.); (R.V.); (A.C.-V.); (M.M.-P.)
| | - Ricardo Valenzuela
- Instituto Politécnico Nacional, Escuela Nacional de Ciencias Biológicas, Departamento de Botánica, Laboratorio de Micología, Mexico City 11340, Mexico; (T.R.); (R.V.); (A.C.-V.); (M.M.-P.)
| | - César Ramiro Martínez-González
- Departamento de Fitotecnia, Instituto de Horticultura, Universidad Autónoma Chapingo, km 38.5 Carretera Federal México-Texcoco, Texcoco 56230, Estado de México, Mexico;
| | - Jesús García-Jiménez
- Instituto Tecnológico de Ciudad Victoria, Tecnológico Nacional de México, Blvd. Emilio Portes Gil #1301Pte, Ciudad Victoria 87010, Tamaulipas, Mexico; (J.G.-J.); (M.S.-F.)
| | - Aurora Cobos-Villagrán
- Instituto Politécnico Nacional, Escuela Nacional de Ciencias Biológicas, Departamento de Botánica, Laboratorio de Micología, Mexico City 11340, Mexico; (T.R.); (R.V.); (A.C.-V.); (M.M.-P.)
| | - Marcos Sánchez-Flores
- Instituto Tecnológico de Ciudad Victoria, Tecnológico Nacional de México, Blvd. Emilio Portes Gil #1301Pte, Ciudad Victoria 87010, Tamaulipas, Mexico; (J.G.-J.); (M.S.-F.)
| | - Javier de la Fuente
- Colegio de Posgraduados, km 36.5, Montecillo, Texcoco 56230, Estado de México, Mexico;
| | - Michelle Martínez-Pineda
- Instituto Politécnico Nacional, Escuela Nacional de Ciencias Biológicas, Departamento de Botánica, Laboratorio de Micología, Mexico City 11340, Mexico; (T.R.); (R.V.); (A.C.-V.); (M.M.-P.)
| | - Abigail Pérez-Valdespino
- Instituto Politécnico Nacional, Escuela Nacional de Ciencias Biológicas, Departamento de Bioquímica, Laboratorio de Ingeniería Genética, Mexico City 11340, Mexico;
| | - Julio Cesar Ramírez-Martínez
- Laboratorio de Biogeografía y Sistemática, Departamento de Biología Evolutiva, Facultad de Ciencias, Universidad Nacional Autónoma de México, Mexico City 04510, Mexico;
| | - Isolda Luna-Vega
- Laboratorio de Biogeografía y Sistemática, Departamento de Biología Evolutiva, Facultad de Ciencias, Universidad Nacional Autónoma de México, Mexico City 04510, Mexico;
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Wang XC, Yang ZL, Chen SL, Bau T, Li TH, Li L, Fan L, Zhuang WY. Phylogeny and Taxonomic Revision of the Family Discinaceae ( Pezizales, Ascomycota). Microbiol Spectr 2023; 11:e0020723. [PMID: 37102868 PMCID: PMC10269896 DOI: 10.1128/spectrum.00207-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2023] [Accepted: 03/20/2023] [Indexed: 04/28/2023] Open
Abstract
Species of Discinaceae are common macrofungi with a worldwide distribution. Some of them are commercially consumed, while a few others are reported as poisonous. Two genera were accepted in the family: the epigeous Gyromitra with discoid, cerebriform to saddle-shaped ascomata and the hypogeous Hydnotrya with globose or tuberous ascomata. However, due to discrepancies in their ecological behaviors, a comprehensive investigation of their relationship was not thoroughly explored. In this study, phylogenies of Discinaceae were reconstructed using sequence analyses of combined and separate three gene partitions (internal transcribed spacer [ITS], large subunit ribosomal DNA [LSU], and translation elongation factor [TEF]) with a matrix containing 116 samples. As a result, the taxonomy of the family was renewed. Eight genera were recognized: two of them (Gyromitra and Hydnotrya) were retained, three (Discina, Paradiscina, and Pseudorhizina) were revived, and three (Paragyromitra, Pseudodiscina, and Pseudoverpa) were newly established. Nine new combinations were made in four genera. Two new species in Paragyromitra and Pseudodiscina and an un-named taxon of Discina were described and illustrated in detail based on the materials collected from China. Furthermore, a key to the genera of the family was also provided. IMPORTANCE Taxonomy of the fungal family Discinaceae (Pezizales, Ascomycota) was significantly renewed on the basis of sequence analyses of internal transcribed spacer (ITS), large subunit ribosomal DNA (LSU), and translation elongation factor (TEF). Eight genera were accepted, including three new genera; two new species were described; and nine new combinations were made. A key to the accepted genera of the family is provided. The aim of this study is to deepen the understanding of the phylogenetic relationships among genera of the group, as well as the associated generic concepts.
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Affiliation(s)
- Xin-Cun Wang
- State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, China
| | - Zhu-Liang Yang
- Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, China
| | - Shuang-Lin Chen
- College of Life Sciences, Nanjing Normal University, Nanjing, China
| | - Tolgor Bau
- Key Laboratory of Edible Fungi Resources and Utilization (North), Ministry of Agriculture and Rural Affairs, Jilin Agricultural University, Changchun, Jilin, China
| | - Tai-Hui Li
- Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, State Key Laboratory of Applied Microbiology Southern China, Guangdong Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou, China
| | - Lin Li
- College of Agronomy and Biosciences, Dali University, Dali, China
| | - Li Fan
- College of Life Science, Capital Normal University, Beijing, China
| | - Wen-Ying Zhuang
- State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, China
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Dirks AC, Mohamed OG, Schultz PJ, Miller AN, Tripathi A, James TY. Not all bad: Gyromitrin has a limited distribution in the false morels as determined by a new ultra high-performance liquid chromatography method. Mycologia 2023; 115:1-15. [PMID: 36541902 DOI: 10.1080/00275514.2022.2146473] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Gyromitrin (acetaldehyde N-methyl-N-formylhydrazone) and its homologs are deadly mycotoxins produced most infamously by the lorchel (also known as false morel) Gyromitra esculenta, which is paradoxically consumed as a delicacy in some parts of the world. There is much speculation about the presence of gyromitrin in other species of the lorchel family (Discinaceae), but no studies have broadly assessed its distribution. Given the history of poisonings associated with the consumption of G. esculenta and G. ambigua, we hypothesized that gyromitrin evolved in the last common ancestor of these taxa and would be present in their descendants with adaptive loss of function in the nested truffle clade, Hydnotrya. To test this hypothesis, we developed a sensitive analytical derivatization method for the detection of gyromitrin using 2,4-dinitrobenzaldehyde as the derivatization reagent. In total, we analyzed 66 specimens for the presence of gyromitrin over 105 tests. Moreover, we sequenced the nuc rDNA internal transcribed spacer region ITS1-5.8S-ITS2 (ITS barcode) and nuc 28S rDNA to assist in species identification and to infer a supporting phylogenetic tree. We detected gyromitrin in all tested specimens from the G. esculenta group as well as G. leucoxantha. This distribution is consistent with a model of rapid evolution coupled with horizontal transfer, which is typical for secondary metabolites. We clarified that gyromitrin production in Discinaceae is both discontinuous and more limited than previously thought. Further research is required to elucidate the gyromitrin biosynthesis gene cluster and its evolutionary history in lorchels.
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Affiliation(s)
- Alden C Dirks
- Department of Ecology and Evolutionary Biology, University of Michigan, Ann Arbor, Michigan 48103
| | - Osama G Mohamed
- Natural Products Discovery Core, Life Sciences Institute, University of Michigan, Ann Arbor, Michigan 48103.,Department of Pharmacognosy, Faculty of Pharmacy, Cairo University, Cairo 11562, Egypt
| | - Pamela J Schultz
- Natural Products Discovery Core, Life Sciences Institute, University of Michigan, Ann Arbor, Michigan 48103
| | - Andrew N Miller
- Illinois Natural History Survey, University of Illinois Urbana-Champaign, Champaign, Illinois 61820
| | - Ashootosh Tripathi
- Natural Products Discovery Core, Life Sciences Institute, University of Michigan, Ann Arbor, Michigan 48103.,Department of Medicinal Chemistry, College of Pharmacy, University of Michigan, Ann Arbor, Michigan 48103
| | - Timothy Y James
- Department of Ecology and Evolutionary Biology, University of Michigan, Ann Arbor, Michigan 48103
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Arnold AE. Mycology: Metagenomes illuminate evolutionary relationships and reframe symbiotic interactions. Curr Biol 2022; 32:R1304-R1306. [PMID: 36473438 DOI: 10.1016/j.cub.2022.10.041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
An intriguing new study leverages newly generated metagenomes to remap the evolution of the most species-rich clade of fungi, highlighting how some of the most intriguing and visible manifestations of symbioses - lichens - may arise.
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Affiliation(s)
- A Elizabeth Arnold
- School of Plant Sciences and Department of Ecology and Evolutionary Biology, The University of Arizona, Tucson, AZ 85721, USA. arnold,@,ag.arizona.edu
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Karlsen-Ayala E, Smith ME, Askey BC, Gazis R. Native ectomycorrhizal fungi from the endangered pine rocklands are superior symbionts to commercial inoculum for slash pine seedlings. MYCORRHIZA 2022; 32:465-480. [PMID: 36210381 DOI: 10.1007/s00572-022-01092-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/05/2022] [Accepted: 09/23/2022] [Indexed: 06/16/2023]
Abstract
The south Florida pine rocklands is a critically endangered, fire-dependent ecosystem dominated by the overstory tree Pinus densa (South Florida slash pine). Because pine recruitment in this ecosystem has proven problematic, restoration efforts need to include replanting slash pine trees. Even though ectomycorrhizal fungi are known to be critical symbionts of young pines and are necessary for the development of healthy pines, virtually nothing is known about these mutualists and their role in pine establishment and survival in the pine rocklands. One approach to improve pine establishment is to grow seedlings in a nursery before outplanting, facilitating early associations with ectomycorrhizae, and therefore improving seedling health. In this study, we compared health metrics (height, stem diameter, final needle length, root length, root colonization, needle greenness, root volume, and root:shoot ratio) of seedlings grown in soil amended with five commercially available mycorrhizal inocula versus field soil collected from three pine rockland fragments. Seedlings grown with native field soil from the pine rocklands generally performed better than those grown with commercial inoculum in all metrics except root length. According to their labels, each commercial inoculum contained between 4 and 10 ectomycorrhizal fungi species. However, no ectomycorrhizal fungi were recovered from two of the inoculum products and only three ectomycorrhizal fungi in total were recovered from the other three products. In contrast, seedlings grown with field soil are associated with ten ectomycorrhizal species. Our results highlight the importance of incorporating native ectomycorrhizal fungi into pine seedling replanting as part of restoration efforts in the pine rocklands.
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Affiliation(s)
- Elena Karlsen-Ayala
- Department of Plant Pathology, Tropical Research and Education Center, University of Florida, Homestead, FL, 33031, USA.
- Department of Plant Pathology, University of Florida, Gainesville, FL, 32608, USA.
- Department of Soil and Water Sciences, Southwest Research and Education Center, University of Florida, Immokalee, FL, 34142, USA.
| | - Matthew E Smith
- Department of Plant Pathology, University of Florida, Gainesville, FL, 32608, USA
| | - Bryce C Askey
- Plant Biology Section, School of Integrative Plant Science, Cornell University, Ithaca, NY, 14853, USA
| | - Romina Gazis
- Department of Plant Pathology, Tropical Research and Education Center, University of Florida, Homestead, FL, 33031, USA
- Department of Plant Pathology, University of Florida, Gainesville, FL, 32608, USA
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Miller AN, Dirks AC, Filippova N, Popov E, Methven AS. Studies in Gyromitra II: cryptic speciation in the Gyromitra gigas species complex; rediscovery of G. ussuriensis and G. americanigigas sp. nov. Mycol Prog 2022. [DOI: 10.1007/s11557-022-01832-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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