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Geml J, Leal CM, Nagy R, Sulyok J. Abiotic environmental factors drive the diversity, compositional dynamics and habitat preference of ectomycorrhizal fungi in Pannonian forest types. Front Microbiol 2022; 13:1007935. [PMID: 36312934 PMCID: PMC9597314 DOI: 10.3389/fmicb.2022.1007935] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2022] [Accepted: 09/16/2022] [Indexed: 11/26/2022] Open
Abstract
Ectomycorrhizal (ECM) fungi are among the most diverse and dominant fungal groups in temperate forests and are crucial for ecosystem functioning of forests and their resilience toward disturbance. We carried out DNA metabarcoding of ECM fungi from soil samples taken at 62 sites in the Bükk Mountains in northern Hungary. The selected sampling sites represent the characteristic Pannonian forest types distributed along elevation (i.e., temperature), pH and slope aspect gradients. We compared richness and community composition of ECM fungi among forest types and explored relationships among environmental variables and ECM fungal alpha and beta diversity. The DNA sequence data generated in this study indicated strong correlations between fungal community composition and environmental variables, particularly with pH and soil moisture, with many ECM fungi showing preference for specific zonal, topographic or edaphic forest types. Several ECM fungal genera showed significant differences in richness among forest types and exhibited strong compositional differences mostly driven by differences in environmental factors. Despite the relatively high proportions of compositional variance explained by the tested environmental variables, a large proportion of the compositional variance remained unexplained, indicating that both niche (environmental filtering) and neutral (stochastic) processes shape ECM fungal community composition at landscape level. Our work provides unprecedented insights into the diversity, landscape-level distribution, and habitat preferences of ECM fungi in the Pannonian forests of Northern Hungary.
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Affiliation(s)
- József Geml
- ELKH-EKKE Lendület Environmental Microbiome Research Group, Eszterházy Károly Catholic University, Eger, Hungary
- Research and Development Centre, Eszterházy Károly Catholic University, Eger, Hungary
- *Correspondence: József Geml,
| | - Carla Mota Leal
- ELKH-EKKE Lendület Environmental Microbiome Research Group, Eszterházy Károly Catholic University, Eger, Hungary
| | - Richárd Nagy
- Research and Development Centre, Eszterházy Károly Catholic University, Eger, Hungary
| | - József Sulyok
- Biodiversity Protection Group, Bükk National Park Directorate, Eger, Hungary
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2
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Lu X, Cao T, Nguyễn TTT, Yuan HS. Six New Species of Tomentella (Thelephorales, Basidiomycota) From Tropical Pine Forests in Central Vietnam. Front Microbiol 2022; 13:864198. [PMID: 35547107 PMCID: PMC9082317 DOI: 10.3389/fmicb.2022.864198] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2022] [Accepted: 02/28/2022] [Indexed: 11/25/2022] Open
Abstract
Up to this point, studies on the taxonomy and phylogeny of the basidiomycetous genus Tomentella stemmed mainly from the temperate to boreal zones of the Northern hemisphere but were scarce in tropical Asia. In this study, six new species—T. bidoupensis, T. brevisterigmata, T. cinereobrunnea, T. longiechinula, T. stipitobasidia, and T. verruculata from central Vietnam in Southeast Asia—are described and illustrated on the basis of morphological characteristics and molecular phylogenetic analyses of the nuclear ribosomal ITS (internal transcribed spacer: ITS1-5.8S-ITS2) and LSU (large subunit: 28S) markers. Maximum likelihood and Bayesian analyses were used to confirm the phylogenetic positions of these new species and all of them can be well recognized by the macroscopical and anatomical characteristics. The new species and closely related species in the phylogenetic tree, and the new species and morphologically similar species are discussed, whereas the host plant for these new species were speculated on the basis of the phylogenetic analyses and the tree species information of the investigated forests.
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Affiliation(s)
- Xu Lu
- CAS Key Laboratory of Forest Ecology and Management, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, China.,College of Basic Medical Science, Liaoning He's Medical University, Shenyang, China.,University of the Chinese Academy of Sciences, Beijing, China
| | - Ting Cao
- CAS Key Laboratory of Forest Ecology and Management, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, China.,University of the Chinese Academy of Sciences, Beijing, China
| | - Trang Thị Thu Nguyễn
- Department of Microbiology, Faculty of Biology and Biotechnology, University of Science, Vietnam National University, Ho Chi Minh City, Vietnam
| | - Hai-Sheng Yuan
- CAS Key Laboratory of Forest Ecology and Management, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, China
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3
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Mrak T, Hukić E, Štraus I, Unuk Nahberger T, Kraigher H. Ectomycorrhizal community composition of organic and mineral soil horizons in silver fir (Abies alba Mill.) stands. MYCORRHIZA 2020; 30:541-553. [PMID: 32691152 DOI: 10.1007/s00572-020-00970-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2019] [Accepted: 06/02/2020] [Indexed: 06/11/2023]
Abstract
Vertical ectomycorrhizal (ECM) community composition was assessed on silver fir (Abies alba Mill.) in beech-silver fir forests in Bosnia and Herzegovina. Organic and upper mineral horizons were described by pedological analyses. Silver fir root tips were divided into vital ECM, old and non-mycorrhizal for each horizon separately. Morpho-anatomical classification of vital ECM root tips with an assessment of abundance was followed by ITS-based molecular characterization and classification into exploration types. The percentage of vital ECM root tips was not affected by the soil horizon. Altogether, 40 ECM taxa were recorded. Several taxa have not previously been reported for silver fir: Hebeloma laterinum, Inocybe fuscidula, I. glabripes, Lactarius acris, L. albocarneus, L. blennius, L. fluens, Ramaria bataillei, Russula badia, R. lutea, R. mairei, Sistotrema sp., Tarzetta catinus, Tomentella atroarenicolor, T. badia, T. cinerascens, T. bryophylla, and T. ramosissima, indicating high potential for diversity of ECM fungi in silver fir stands. No significant differences in community composition and species richness and diversity were detected between mineral and organic horizons. Community composition was affected by CaCO3, organic carbon concentration, organic carbon stock, total nitrogen stock, C/N ratio and soil bulk density. No significant effects of soil parameters were detected for exploration types. The contact exploration type was dominant in both soil horizons. Significantly different relative abundances of dominant taxa Tomentella stuposa, Cenococcum geophilum and Piloderma sp. 1 were detected in the two horizons. Twelve taxa were limited to the organic horizon and eight to the mineral horizon.
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Affiliation(s)
- Tanja Mrak
- Slovenian Forestry Institute, Večna pot 2, 1000, Ljubljana, Slovenia.
| | - Emira Hukić
- Faculty of Forestry, University of Sarajevo, Zagrebačka 20, 71000, Sarajevo, Bosnia and Herzegovina
| | - Ines Štraus
- Slovenian Forestry Institute, Večna pot 2, 1000, Ljubljana, Slovenia
| | | | - Hojka Kraigher
- Slovenian Forestry Institute, Večna pot 2, 1000, Ljubljana, Slovenia
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Knapp DG, Zagyva I, Vági P, Németh JB, Trappe JM, Kovács GM. The new truffle genus Babosia and a new species of Stouffera from semiarid grasslands of Hungary. Mycologia 2020; 112:808-818. [PMID: 32634341 DOI: 10.1080/00275514.2020.1768760] [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: 10/23/2022]
Abstract
Truffles with distinct morphological and anatomical features were collected during a study of hypogeous fungi of semiarid sandy grasslands of the Great Hungarian Plain in Hungary, representing the westernmost localities of the Eurasian steppe belt. None of the ascomata were collected near ectomycorrhizal plant species, and none were identified as ectomycorrhizal during previous surveys in the collection area. We studied morphoanatomical characteristics of these truffles with light and scanning electron microscopy and investigated their phylogenetic positions based on analyses of different nuclear loci. The truffles were found to represent two novel lineages that grouped with the Marcelleina-Peziza gerardii clade of the Pezizaceae. One formed a distinct lineage, for which we propose a new genus Babosia with a new species Babosia variospora characterized by diverse spore ornamentation varying even within one ascus. The truffles in the other lineage clustered with the rarely collected American truffle Stouffera longii and share with it similar spore ornamentation and habitat features. However, our material differs from S. longii by geographic origin, the quick and strong coloration of the ascomata to dark gray at cut surface or bruised area, varying spore number in asci, and smaller spore size; thus, we describe it as a new species, Stouffera gilkeyae.
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Affiliation(s)
- Dániel G Knapp
- Department of Plant Anatomy, Institute of Biology, Eötvös Loránd University , Pázmány Péter sétány 1/c, Budapest 1117, Hungary
| | - Imre Zagyva
- Nefag Rt. Nagykunsági Forestry and Wood Industry Rt ., Szolnok, Hungary.,Centre for Agricultural Research, Institute for Soil Sciences and Agricultural Chemistry , Herman Ottó ót 15, H-1022 Budapest, Hungary
| | - Pál Vági
- Department of Plant Anatomy, Institute of Biology, Eötvös Loránd University , Pázmány Péter sétány 1/c, Budapest 1117, Hungary
| | - Julianna B Németh
- Department of Plant Anatomy, Institute of Biology, Eötvös Loránd University , Pázmány Péter sétány 1/c, Budapest 1117, Hungary
| | - James M Trappe
- US Forest Service, Pacific Northwest Research Station , 3200 Jefferson Way, Corvallis, Oregon 97331
| | - Gábor M Kovács
- Department of Plant Anatomy, Institute of Biology, Eötvös Loránd University , Pázmány Péter sétány 1/c, Budapest 1117, Hungary
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Geml J. Soil fungal communities reflect aspect-driven environmental structuring and vegetation types in a Pannonian forest landscape. FUNGAL ECOL 2019. [DOI: 10.1016/j.funeco.2018.12.005] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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Lu X, Steffen K, Yuan HS. Morphological and molecular identification of three new species of Tomentella from Finland. Mycologia 2018; 110:677-691. [PMID: 30081774 DOI: 10.1080/00275514.2018.1474683] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
Abstract
Three new species of Tomentella (Thelephorales) from Finland, T. globosa, T. lammiensis, and T. longisterigmata, are described and illustrated with morphological characteristics and nuc rDNA ITS1-5.8S-ITS2 sequences. T. globosa is characterized by mucedinoid, pale to dark brown basidiocarps adherent to the substrate, generative hyphae with clamps and rarely with simple septa, and echinulate, globose basidiospores (echinuli up to 1.5 μm long). T. lammiensis is characterized by mucedinoid, oxide yellow to golden brown basidiocarps adherent to the substrate, generative hyphae with clamps and rarely with simple septa, and echinulate, ellipsoid, triangular, or lobbed basidiospores (echinuli up to 2 μm long). T. longisterigmata is characterized by mucedinoid, dark brown to chestnut basidiocarps separable from the substrate, generative hyphae clamped and rarely with simple septa, the long basidial sterigmata (7-11 μm long), and echinulate, globose basidiospores (echinuli up to 2 μm long). An absence of rhizomorphs and cystidia is their common morphological feature. Molecular analyses by maximum likelihood, maximum parsimony, and Bayesian analyses confirm the phylogenetic position of these three new species. The discriminating characters of these new species and their closely related species are discussed in this study, and a key to the species from Finland is provided.
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Affiliation(s)
- Xu Lu
- a CAS Key Laboratory of Forest Ecology, Institute of Applied Ecology, Chinese Academy of Sciences , Shenyang 110164 , People's Republic of China.,b University of the Chinese Academy of Sciences , Beijing 100049 , People's Republic of China
| | - Kari Steffen
- c Department of Environmental Sciences , Section of Environmental Ecology , Niemenkatu 73, 15100 Lahti , Finland
| | - Hai-Sheng Yuan
- a CAS Key Laboratory of Forest Ecology, Institute of Applied Ecology, Chinese Academy of Sciences , Shenyang 110164 , People's Republic of China
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Kuhar F, Barroetaveña C, Rajchenberg M. New species of Tomentella (Thelephorales) from the Patagonian Andes forests. Mycologia 2016; 108:780-90. [PMID: 27091385 DOI: 10.3852/15-244] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2015] [Accepted: 03/02/2016] [Indexed: 11/10/2022]
Abstract
The genus Tomentella forms abundant ectomycorrhizae in coniferous and deciduous forests worldwide. Molecular identification of root tips suggests undescribed species in the Nothofagus forests of Patagonia, Argentina. Tomentella tenuissima, T. pulvinulata and T. patagonica are described here as new to science based on morphological and molecular analyses. Their host range is addressed using available soil sequences. The identity of previous records of T. galzinii and T. radiosa are discussed with morphological and molecular evidence.
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Affiliation(s)
- Francisco Kuhar
- Centro de Investigación y Extensión Forestal Andino Patagónico (CIEFAP), C.C. 14, Ruta 259 km 14.6, Esquel, Chubut, 9200 ArgentinaConsejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Argentina
| | - Carolina Barroetaveña
- Centro de Investigación y Extensión Forestal Andino Patagónico (CIEFAP), C.C. 14, Ruta 259 km 14.6, Esquel, Chubut, 9200 Argentina, and Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), ArgentinaUniversidad Nacional de la Patagonia S.J. Bosco, Facultad de Ingeniería, Sede Esquel, Ruta 259 km 14.6, Esquel, Chubut, 9200 Argentina
| | - Mario Rajchenberg
- Centro de Investigación y Extensión Forestal Andino Patagónico (CIEFAP), C.C. 14, Ruta 259 km 14.6, Esquel, Chubut, 9200 Argentina, and Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), ArgentinaUniversidad Nacional de la Patagonia S.J. Bosco, Facultad de Ingeniería, Sede Esquel, Ruta 259 km 14.6, Esquel, Chubut, 9200 Argentina
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De Miguel AM, Águeda B, Sáez R, Sánchez S, Parladé J. Diversity of ectomycorrhizal Thelephoraceae in Tuber melanosporum-cultivated orchards of Northern Spain. MYCORRHIZA 2016; 26:227-236. [PMID: 26458929 DOI: 10.1007/s00572-015-0665-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/30/2015] [Accepted: 10/04/2015] [Indexed: 06/05/2023]
Abstract
Truffles are edible hypogeous ascomycetes highly appreciated worldwide, especially the black truffle (Tuber melanosporum Vittad.). In recent decades, the cultivation of the black truffle has expanded across the Mediterranean climate regions in and outside its native range. Members of the Thelephoraceae (Thelephorales, Agaricomycetes, Basidiomycota) are commonly found in truffle plantations, but their co-occurrence with Tuber species and other members of the fungal community has been scarcely reported. Thelephoraceae is one of the most represented families of the ectomycorrhizal fungal community in boreal and Mediterranean forests. To reveal the diversity of these fungi in T. melanosporum-cultivated plantations, ten orchards located in the Navarra region (Northern Spain) were surveyed for 2 years. Morphological and molecular approaches were used to detect and identify the Thelephoraceae ectomycorrhizas present in those plantations. Ten different mycorrhizal types were detected and described. Four of them were morphologically identified as Tomentella galzinii, Quercirhiza cumulosa, Q. squamosa, and T39 Thelephoraceae type. Molecular analyses revealed 4-6 operational taxonomic units (OTUs), depending on the nucleotide database used, but similarities remained under 95 % and no clear species assignments could be done. The results confirm the diversity and abundance of this fungal family in the ectomycorrhizal community of black truffle plantations, generally established in Mediterranean areas. The occurrence and relative abundance of Thelephoraceae ectomycorrhizas is discussed in relation to their possible influence on truffle production.
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Affiliation(s)
- Ana María De Miguel
- Departamento de Biología Ambiental, Universidad de Navarra, 31008, Pamplona, Spain
| | - Beatriz Águeda
- Área de Botánica, Departamento de Ciencias Agroforestales, EU de Ingenierías Agrarias, Universidad de Valladolid, Campus Duques de Soria, 42004, Soria, Spain
| | - Raimundo Sáez
- INTIA, Avda. Serapio Huici 22, 31610, Villava, Navarra, Spain
| | - Sergio Sánchez
- Unidad de Recursos Forestales, Centro de Investigación y Tecnología Agroalimentaria de Aragón (CITA), Instituto Agroalimentario de Aragón - IA2 (CITA-Universidad de Zaragoza), Avenida de Montañana 930, 50059, Zaragoza, Spain
| | - Javier Parladé
- IRTA, Centre de Cabrils, Ctra. Cabrils km. 2, 08348, Cabrils, Barcelona, Spain.
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Alvarez-Manjarrez J, Villegas-Ríos M, Garibay-Orijel R, Contreras-Pacheco M, Kõljalg U. Tomentella brunneoincrustata, the first described species of the Pisonieae-associated Neotropical Tomentella clade, and phylogenetic analysis of the genus in Mexico. Mycol Prog 2015. [DOI: 10.1007/s11557-015-1152-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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