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Mats Wedin - One of the best experts on this subject based on the ideXlab platform.
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Tremella mayrhoferi, a New Lichenicolous Species on Lecanora allophana
Herzogia, 2018Co-Authors: Juan Carlos Zamora, Ana M Millanes, Javier Etayo, Mats WedinAbstract:Abstract: Zamora J.C., Millanes A.M., Etayo J. & Wedin M. 2018: Tremella mayrhoferi, a new lichenicolous species on Lecanora allophana. – Herzogia 31: 666–676. Tremella mayrhoferi, inducing galls on the hymenium of Lecanora allophana, is described. The description is based on molecular, morphological and ecological data of 27 specimens from Finland, Norway, Spain, Sweden, and USA. The new species is easily distinguished from other lichenicolous Tremella species by its characteristic basidia with cells that elongate before the formation of epibasidia, combined with the macromorphology and host selection. Molecular phylogeny suggests that it forms a group with other species growing on Lecanora s. lat. and Lecidea s. lat., which is related to the Tremella species growing on Parmeliaceae, but not to Tremella s. str.
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an old familiar face Tremella anaptychiae sp nov Tremellales basidiomycota
Phytotaxa, 2017Co-Authors: Juan Carlos Zamora, Ana M Millanes, Paul Diederich, Mats WedinAbstract:Tremella anaptychiae , a lichenicolous fungus growing on Anaptychia ciliaris , is described as new. Both morphological and molecular data (DNA sequences from the ITS and 28S regions) are used to characterize and distinguish it from other Tremella s. l. species. Tremella anaptychiae is closely related to T. parmeliarum but comparatively distantly related to other previously recognized lichenicolous species groups.
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in the Nordic countries
2016Co-Authors: Lichenicolous Tremellales, Tommy Knutsson, Martin Westberg, Ana M Millanes, Paul Diederich, Mats WedinAbstract:other interesting lichenicolous Tremellales and Filobasidiales in the Nordic countries. MycoKeys 8: 31–41. doi: 10.3897/ mycokeys.8.8176 New data on the diversity and geographical distribution of lichenicolous Tremellales and Filobasidiales in the Nordic countries is presented. One new species, Tremella rhizocarpicola, is formally described. Tremella pertusariae and T. protoparmeliae are reported as new to the Nordic countries, Syzygospora physciacearum is new to Iceland, Tremella rinodinae is new to Sweden, and T. caloplacae is new to Norway. Nine species are reported as new to a number of Swedish provinces, including Biatoropsis usnearum, Syzygospora bachman
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Understanding lichenicolous heterobasidiomycetes: new taxa and reproductive innovations in Tremella s.l.
Mycologia, 2016Co-Authors: Juan Carlos Zamora, Ana M Millanes, Mats Wedin, Víctor J. Rico, Sergio Pérez-ortegaAbstract:Four new lichenicolous Tremella species are described and characterized morphologically and molecularly. Tremella celata grows on Ramalina fraxinea, inducing the formation of inconspicuous galls, and having hyphae with incomplete clamps. Tremella endosporogena develops intrahymenially in the apothecia of Lecanora carpinea, having single-celled basidia and clampless hyphae. Tremella diederichiana is the name proposed for a species micromorphologically close to T. christiansenii but inducing the formation of small, pale galls on the thallus and apothecia of Lecidea aff. erythrophaea Tremella variae grows on Lecanora varia thallus, instead of on the apothecia, as do the other known Tremella species parasitizing Lecanora s.l. Phylogenetic relationships and host specificity of these species are investigated and compared with other taxa that show morphological resemblances, phylogenetic affinities or similar hosts. The formation of mitotic conidia inside old basidia (endospores), which is a poorly known reproductive strategy in the Basidiomycota, is also a distinctive character of Tremella endosporogena A discussion on the reproductive role and systematic implications of endospores is included.
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Tremella cetrariellae Tremellales basidiomycota fungi a new lichenicolous fungus on cetrariella delisei
Lichenologist, 2015Co-Authors: Ana M Millanes, Emilia Pippola, Martin Westberg, Paul Diederich, Mats WedinAbstract:Tremella cetrariellae (Tremellales, Basidiomycota, Fungi), a new lichenicolous species on Cetrariella delisei
Ana M Millanes - One of the best experts on this subject based on the ideXlab platform.
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Tremella mayrhoferi, a New Lichenicolous Species on Lecanora allophana
Herzogia, 2018Co-Authors: Juan Carlos Zamora, Ana M Millanes, Javier Etayo, Mats WedinAbstract:Abstract: Zamora J.C., Millanes A.M., Etayo J. & Wedin M. 2018: Tremella mayrhoferi, a new lichenicolous species on Lecanora allophana. – Herzogia 31: 666–676. Tremella mayrhoferi, inducing galls on the hymenium of Lecanora allophana, is described. The description is based on molecular, morphological and ecological data of 27 specimens from Finland, Norway, Spain, Sweden, and USA. The new species is easily distinguished from other lichenicolous Tremella species by its characteristic basidia with cells that elongate before the formation of epibasidia, combined with the macromorphology and host selection. Molecular phylogeny suggests that it forms a group with other species growing on Lecanora s. lat. and Lecidea s. lat., which is related to the Tremella species growing on Parmeliaceae, but not to Tremella s. str.
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an old familiar face Tremella anaptychiae sp nov Tremellales basidiomycota
Phytotaxa, 2017Co-Authors: Juan Carlos Zamora, Ana M Millanes, Paul Diederich, Mats WedinAbstract:Tremella anaptychiae , a lichenicolous fungus growing on Anaptychia ciliaris , is described as new. Both morphological and molecular data (DNA sequences from the ITS and 28S regions) are used to characterize and distinguish it from other Tremella s. l. species. Tremella anaptychiae is closely related to T. parmeliarum but comparatively distantly related to other previously recognized lichenicolous species groups.
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in the Nordic countries
2016Co-Authors: Lichenicolous Tremellales, Tommy Knutsson, Martin Westberg, Ana M Millanes, Paul Diederich, Mats WedinAbstract:other interesting lichenicolous Tremellales and Filobasidiales in the Nordic countries. MycoKeys 8: 31–41. doi: 10.3897/ mycokeys.8.8176 New data on the diversity and geographical distribution of lichenicolous Tremellales and Filobasidiales in the Nordic countries is presented. One new species, Tremella rhizocarpicola, is formally described. Tremella pertusariae and T. protoparmeliae are reported as new to the Nordic countries, Syzygospora physciacearum is new to Iceland, Tremella rinodinae is new to Sweden, and T. caloplacae is new to Norway. Nine species are reported as new to a number of Swedish provinces, including Biatoropsis usnearum, Syzygospora bachman
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Understanding lichenicolous heterobasidiomycetes: new taxa and reproductive innovations in Tremella s.l.
Mycologia, 2016Co-Authors: Juan Carlos Zamora, Ana M Millanes, Mats Wedin, Víctor J. Rico, Sergio Pérez-ortegaAbstract:Four new lichenicolous Tremella species are described and characterized morphologically and molecularly. Tremella celata grows on Ramalina fraxinea, inducing the formation of inconspicuous galls, and having hyphae with incomplete clamps. Tremella endosporogena develops intrahymenially in the apothecia of Lecanora carpinea, having single-celled basidia and clampless hyphae. Tremella diederichiana is the name proposed for a species micromorphologically close to T. christiansenii but inducing the formation of small, pale galls on the thallus and apothecia of Lecidea aff. erythrophaea Tremella variae grows on Lecanora varia thallus, instead of on the apothecia, as do the other known Tremella species parasitizing Lecanora s.l. Phylogenetic relationships and host specificity of these species are investigated and compared with other taxa that show morphological resemblances, phylogenetic affinities or similar hosts. The formation of mitotic conidia inside old basidia (endospores), which is a poorly known reproductive strategy in the Basidiomycota, is also a distinctive character of Tremella endosporogena A discussion on the reproductive role and systematic implications of endospores is included.
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Tremella cetrariellae Tremellales basidiomycota fungi a new lichenicolous fungus on cetrariella delisei
Lichenologist, 2015Co-Authors: Ana M Millanes, Emilia Pippola, Martin Westberg, Paul Diederich, Mats WedinAbstract:Tremella cetrariellae (Tremellales, Basidiomycota, Fungi), a new lichenicolous species on Cetrariella delisei
Paul Diederich - One of the best experts on this subject based on the ideXlab platform.
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an old familiar face Tremella anaptychiae sp nov Tremellales basidiomycota
Phytotaxa, 2017Co-Authors: Juan Carlos Zamora, Ana M Millanes, Paul Diederich, Mats WedinAbstract:Tremella anaptychiae , a lichenicolous fungus growing on Anaptychia ciliaris , is described as new. Both morphological and molecular data (DNA sequences from the ITS and 28S regions) are used to characterize and distinguish it from other Tremella s. l. species. Tremella anaptychiae is closely related to T. parmeliarum but comparatively distantly related to other previously recognized lichenicolous species groups.
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in the Nordic countries
2016Co-Authors: Lichenicolous Tremellales, Tommy Knutsson, Martin Westberg, Ana M Millanes, Paul Diederich, Mats WedinAbstract:other interesting lichenicolous Tremellales and Filobasidiales in the Nordic countries. MycoKeys 8: 31–41. doi: 10.3897/ mycokeys.8.8176 New data on the diversity and geographical distribution of lichenicolous Tremellales and Filobasidiales in the Nordic countries is presented. One new species, Tremella rhizocarpicola, is formally described. Tremella pertusariae and T. protoparmeliae are reported as new to the Nordic countries, Syzygospora physciacearum is new to Iceland, Tremella rinodinae is new to Sweden, and T. caloplacae is new to Norway. Nine species are reported as new to a number of Swedish provinces, including Biatoropsis usnearum, Syzygospora bachman
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Tremella cetrariellae Tremellales basidiomycota fungi a new lichenicolous fungus on cetrariella delisei
Lichenologist, 2015Co-Authors: Ana M Millanes, Emilia Pippola, Martin Westberg, Paul Diederich, Mats WedinAbstract:Tremella cetrariellae (Tremellales, Basidiomycota, Fungi), a new lichenicolous species on Cetrariella delisei
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the phylogenetic analysis of fungi associated with lichenized ascomycete genus bryoria reveals new lineages in the Tremellales including a new species Tremella huuskonenii hyperparasitic on phacopsis huuskonenii
Fungal Biology, 2015Co-Authors: Hanna Lindgren, Trevor Goward, Paul Diederich, Leena MyllysAbstract:The basidiomycete order Tremellales includes many species parasitic on or cohabiting with lichen-forming fungi. In this study, we examined the phylogenetic position of Tremellales obtained from Bryoria thalli using nSSU, 5.8S, and partial nLSU sequence data. Both Bayesian and maximum likelihood analyses revealed the presence of basidiomycetous fungi in three separate clades within Tremellales. Tremellales sp. A and Tremella sp. B exist asymptomatically in Bryoria thalli and should thus be regarded as endolichenic rather than lichenicolous fungi. The third lineage represents a new species and is described here as Tremella huuskonenii. It is hyperparasitic over galls induced by Phacopsis huuskonenii, a lichenicolous fungus growing in Bryoria thalli. We also examined the genetic diversity of Tremella sp. B and Tremella huuskonenii with an extended taxon sampling using ITS and partial nLSU sequence data. For comparison, ITS, GAPDH, and Mcm7 regions were used for phylogenetic analyses of the host lichen specimens. According to our results, phylogenetic structure within the two Tremella species does not appear to correlate with the geographic distribution nor with the phylogeny or the secondary chemistry of the host lichen. However, ITS haplotype analysis of T. huuskonenii revealed some genetic differences between European and North American populations as some haplotypes were more common in Europe than in North America and vice versa.
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Tremella rhizocarpicola sp nov and other interesting lichenicolous Tremellales and filobasidiales in the nordic countries
MycoKeys, 2014Co-Authors: Ana M Millanes, Tommy Knutsson, Martin Westberg, Paul Diederich, Mats WedinAbstract:New data on the diversity and geographical distribution of lichenicolous Tremellales and Filobasidiales in the Nordic countries is presented. One new species, Tremella rhizocarpicola, is formally described. Tremella pertusariae and T. protoparmeliae are reported as new to the Nordic countries, Syzygospora physciacearum is new to Iceland, Tremella rinodinae is new to Sweden, and T. caloplacae is new to Norway. Nine species are reported as new to a number of Swedish provinces, including Biatoropsis usnearum, Syzygospora bachmannii, S. physciacearum, Tremella caloplacae, T. cetrariicola, T. cladoniae, T. coppinsii, T. diploschistina, and T. hypogymniae.
Shu-yao Tsai - One of the best experts on this subject based on the ideXlab platform.
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differences in the moisture capacity and thermal stability of Tremella fuciformis polysaccharides obtained by various drying processes
Molecules, 2019Co-Authors: Shu-yao TsaiAbstract:We compared the proportions and differences in the polysaccharides of Tremella fuciformis (Berkeley) after drying them by various processes, such as 18 °C cold air, 50 °C hot air, and freeze-drying. We also focused on the moisture capacity kinetic parameters of Tremella fuciformis polysaccharides using various thermal analyses, including differential scanning calorimetry and thermogravimetric techniques. Erofeev’s kinetic and proto-kinetic equations, utilized for kinetic model simulation, can predict the moisture capacity due to the thermal effect. Among the various drying processes, cold air-drying had the highest molecular weight of 2.41 × 107 Da and a moisture content of 13.05% for Tremella fuciformis polysaccharides. Overall, the freeze-dried products had the best thermal decomposition properties under the conditions of a closed system, with an air or nitrogen atmosphere, and had an excellent moisture capacity of around 35 kJ/kg under a closed system for all samples.
Peng Lei - One of the best experts on this subject based on the ideXlab platform.
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High-efficiency production of Tremella aurantialba polysaccharide through basidiospore fermentation.
Bioresource technology, 2020Co-Authors: Tao Sun, Peng Lei, Rui Wang, Dafeng Sun, Yibin Qiu, Liang Sun, Yifan ZhuAbstract:Abstract This study aims to develop a spore fermentation method instead of fruiting body extraction for the production of Tremella aurantialba polysaccharide (TAPS). The purified spore strain Tremella aurantialba NX-20 was isolated for TAPS fermentation. The fermented TAPS and the extracted TAPS had the same monosaccharide composition but higher molecular weight. The conditions for TAPS fermentation by NX-20 were optimized, which were 25 °C, pH 7, 10% initial inoculum and 5 days. To further reduce the processing steps and costs of the medium, tofu wastewater (TW) was used to replace defatted soybean meal (DSM). In a 7.5 L fermentation tank, 40 g/L glucose with 10-fold diluted TW was used as the medium. For TAPS fermentation, a maximum yield of 15.02 ± 0.40 g/L was achieved. In conclusion, this study provides a feasible strategy for the efficient preparation of TAPS through spore fermentation.
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production structure and bioactivity of polysaccharide isolated from Tremella fuciformis xy
International Journal of Biological Macromolecules, 2020Co-Authors: Weiwei Huang, Peng LeiAbstract:Abstract Tremella fuciformis polysaccharide (TFP) is an important bioactive substance in Tremella, that contributes to its use as medicine and food. In this study, a novel fungus Tremella fuciformis XY was isolated and introduced to produce macromolecule polysaccharides (TFPB). The fermentation conditions were optimized and results demonstrates that the initial pH, optimal temperature and liquid volume were 6.0, 26 °C and 80 mL in a 500 mL flask, respectively. The maximum yield of TFPB was 9.05 ± 0.05 g/L, which is 59.05% higher than the basic yield (5.69 ± 0.02 g/L). The TFPB, purified by DEAE column, had a molecular weight (Mw) of 1.14 × 103 kDa and consisted mainly of mannose, glucuronic acid, glucose, galactose, xylose, and rhamnose at a molar ratio of 3.5:1.2:2:1.6:1.4:3. The structure of TFPB was preliminarily investigated by methylation analysis, infrared spectroscopy, and nuclear magnetic resonance analysis. The main linkage types were identified as 1,4-xylp, 1,4-manp, 1-xylp, 1-manp, 1,4-glcp, and 1,3,4-galp. Moreover, the antioxidant assays showed that TFPB could scavenge reactive oxygen species and hydroxyl radicals.
