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Pushpavathi D, Krishnamurthy YL. Study on endolichenic fungal assemblage in Parmotrema and Heterodermia lichens of Shivamoga, Karnataka. Mol Biol Rep 2024; 51:549. [PMID: 38642168 DOI: 10.1007/s11033-024-09497-3] [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: 02/08/2024] [Accepted: 03/27/2024] [Indexed: 04/22/2024]
Abstract
BACKGROUND Lichen is a symbiotic association of algae and fungi, recognized as a self-sustaining ecosystem that constitutes an indeterminant number of bacteria, actinomycetes, fungi, and protozoa. We evaluated the endolichenic fungal assemblage given the dearth of knowledge on endolichenic fungi (ELFs), particularly from part of the Central Western Ghats, Karnataka, and conducted a phylogenetic analysis of xylariaceous fungi, the most diversified group of fungi using ITS and ITS+Tub2 gene set. RESULTS Out of 17 lichen thalli collected from 5 ecoregions, 42 morphospecies recovered, belong to the class Sordariomycetes, Eurotiomycetes, Dothideomycetes, Leotiomycetes, Saccharomycetes. About 19 and 13 ELF genera have been reported from Parmotrema and Heterodermia thallus. Among the ecoregions EC2 showing highest species diversity (Parmotrema (1-D) = 0.9382, (H) = 2.865, Fisher-α = 8.429, Heterodermia (1-D) = 0.8038, H = 1.894, F-α = 4.57) followed the EC3 and EC1. Xylariales are the predominant colonizer reported from at least one thallus from four ecoregions. The morphotypes ELFX04, ELFX05, ELFX08 and ELFX13 show the highest BLAST similarity (> 99%) with Xylaria psidii, X. feejeensis, X. berteri and Hypoxylon fragiforme respectively. Species delimitation and phylogenetic position reveal the closest relation of Xylariaceous ELFs with plant endophytes. CONCLUSIONS The observation highlights that the deciduous forest harness a high number of endolichenic fungi, a dominant portion of these fungi are non-sporulating and still exist as cryptic. Overall, 8 ELF species recognized based on phylogenetic analysis, including the two newly reported fungi ELFX03 and ELFX06 which are suspected to be new species based on the present evidence. The study proved, that the lichen being rich source to establish fungal diversity and finding new species. Successful amplification of most phylogenetic markers like RPB2, building of comprehensive taxonomic databases and application of multi-omics data are further needed to understand the complex nature of lichen-fungal symbiosis.
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Affiliation(s)
- D Pushpavathi
- Department of PG Studies and Research in Applied Botany, Kuvempu University, Jnanasahyadri, Shankaraghatta, Karnataka, 577451, India
| | - Y L Krishnamurthy
- Department of PG Studies and Research in Applied Botany, Kuvempu University, Jnanasahyadri, Shankaraghatta, Karnataka, 577451, India.
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Poma-Angamarca RA, Rojas JR, Sánchez-Rodríguez A, Ruiz-González MX. Diversity of Leaf Fungal Endophytes from Two Coffea arabica Varieties and Antagonism towards Coffee Leaf Rust. PLANTS (BASEL, SWITZERLAND) 2024; 13:814. [PMID: 38592839 PMCID: PMC11154406 DOI: 10.3390/plants13060814] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2024] [Revised: 02/29/2024] [Accepted: 03/06/2024] [Indexed: 04/11/2024]
Abstract
Coffee has immense value as a worldwide-appreciated commodity. However, its production faces the effects of climate change and the spread of severe diseases such as coffee leaf rust (CLR). The exploration of fungal endophytes associated with Coffea sp. has already found the existence of nearly 600 fungal species, but their role in the plants remains practically unknown. We have researched the diversity of leaf fungal endophytes in two Coffea arabica varieties: one susceptible and one resistant to CLR. Then, we conducted cross-infection essays with four common endophyte species (three Colletotrichum sp. and Xylaria sp. 1) and Hemileia vastatrix (CLR) in leaf discs, to investigate the interaction of the endophytes on CLR colonisation success and severity of infection. Two Colletotrichum sp., when inoculated 72 h before H. vastatrix, prevented the colonisation of the leaf disc by the latter. Moreover, the presence of endophytes prior to the arrival of H. vastatrix ameliorated the severity of CLR. Our work highlights both the importance of characterising the hidden biodiversity of endophytes and investigating their potential roles in the plant-endophyte interaction.
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Affiliation(s)
- Ruth A. Poma-Angamarca
- Departamento de Ciencias Biológicas y Agropecuarias, Universidad Técnica Particular de Loja, San Cayetano Alto s/n, Loja 1101608, Ecuador; (R.A.P.-A.); (J.R.R.); (A.S.-R.)
| | - Jacqueline R. Rojas
- Departamento de Ciencias Biológicas y Agropecuarias, Universidad Técnica Particular de Loja, San Cayetano Alto s/n, Loja 1101608, Ecuador; (R.A.P.-A.); (J.R.R.); (A.S.-R.)
| | - Aminael Sánchez-Rodríguez
- Departamento de Ciencias Biológicas y Agropecuarias, Universidad Técnica Particular de Loja, San Cayetano Alto s/n, Loja 1101608, Ecuador; (R.A.P.-A.); (J.R.R.); (A.S.-R.)
| | - Mario X. Ruiz-González
- Departamento de Ciencias Biológicas y Agropecuarias, Universidad Técnica Particular de Loja, San Cayetano Alto s/n, Loja 1101608, Ecuador; (R.A.P.-A.); (J.R.R.); (A.S.-R.)
- SENESCYT is the Secretaría de Educación Superior, Ciencia, Tecnología e Innovación from the Government of Ecuador, Proyecto Prometeo SENESCYT, Universidad Técnica Particular de Loja, San Cayetano Alto s/n, Loja 1101608, Ecuador
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Lee W, Kim DG, Perera RH, Kim JS, Cho Y, Lee JW, Seo CW, Lim YW. Diversity of Nigrospora ( Xylariales, Apiosporaceae) Species Identified in Korean Macroalgae Including Five Unrecorded Species. MYCOBIOLOGY 2023; 51:401-409. [PMID: 38179117 PMCID: PMC10763912 DOI: 10.1080/12298093.2023.2283272] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Accepted: 11/09/2023] [Indexed: 01/06/2024]
Abstract
Nigrospora (Xylariales, Apiosporaceae) consists of species of terrestrial plant endophytes and pathogens. Nigrospora has also been reported in marine environments such as mangroves, sea fans, and macroalgae. However, limited research has been conducted on Nigrospora associated with macroalgae. Here, we isolated Nigrospora species from three types of algae (brown, green, and red algae) from Korean islands (Chuja, Jeju, and Ulleung) based on phylogenetic analyses of multigenetic markers: the internal transcribed spacers (ITS), beta-tubulin (BenA), and translation elongation factor 1 (TEF1-α). A total of 17 Nigrospora strains were isolated from macroalgae and identified as nine distinct species. The majority of Nigrospora species (seven) were found on brown algae, followed by red algae (three), and then green algae (two). To our understanding, this study represents the first account of N. cooperae, N. covidalis, N. guilinensis, N. lacticolonia, N. osmanthi, N. pyriformis, and N. rubi occurring in marine environments. Additionally, this study provides the first report of the occurrence of N. cooperae, N. covidalis, N. guilinensis, N. lacticolonia, and N. osmanthi in South Korea. This study will provide valuable insights for future research exploring the functions of fungi in macroalgal communities.
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Affiliation(s)
- Wonjun Lee
- School of Biological Sciences and Institute of Microbiology, Seoul National University, Seoul, Korea
| | - Dong-Geon Kim
- School of Biological Sciences and Institute of Microbiology, Seoul National University, Seoul, Korea
| | - Rekhani H. Perera
- School of Biological Sciences and Institute of Microbiology, Seoul National University, Seoul, Korea
| | - Ji Seon Kim
- School of Biological Sciences and Institute of Microbiology, Seoul National University, Seoul, Korea
| | - Yoonhee Cho
- School of Biological Sciences and Institute of Microbiology, Seoul National University, Seoul, Korea
| | - Jun Won Lee
- School of Biological Sciences and Institute of Microbiology, Seoul National University, Seoul, Korea
| | - Chang Wan Seo
- School of Biological Sciences and Institute of Microbiology, Seoul National University, Seoul, Korea
| | - Young Woon Lim
- School of Biological Sciences and Institute of Microbiology, Seoul National University, Seoul, Korea
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Nurul-Aliyaa YA, Awang NA, Mohd MH. Characterization of white rot fungi from wood decayed for lignin degradation. Lett Appl Microbiol 2023; 76:ovad118. [PMID: 37777838 DOI: 10.1093/lambio/ovad118] [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: 05/24/2023] [Revised: 09/27/2023] [Accepted: 09/29/2023] [Indexed: 10/02/2023]
Abstract
The present study was conducted to isolate and identify white rot fungi (WRF) from wood decayed and to determine their ability to produce lignin-modifying enzymes (LMEs), specifically laccase (Lac), lignin peroxidase (LiP), and manganese peroxidase (MnP), on solid and liquid media supplemented with synthetic dyes namely 2,2'-Azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS), azure B, and phenol red. A total of 23 isolates of WRF were isolated from decayed wood and identified as eight different species namely Phanerochaete australis, Perenniporia tephropora, Lentinus squarrosulus, Ganoderma australe, Trametes polyzona, Lentinus sajor-caju, Gymnopilus dilepis, and Fomitopsis palustris based on morphological characteristics, DNA sequences of the internal transcribed spacer (ITS) region, and phylogenetic inference. The fungal isolates can be divided into four groups based on the type of LMEs produced, namely A (Lac-LiP-MnP) with 16 isolates, B (Lac-MnP) (three isolates), C (Lac) (three isolates), and D (MnP) (one isolate). This study highlights P. australis (BJ38) as the best producer of Lac and LiP, while L. squarrosulus (IPS72) is the best producer of MnP. The present study is the first reported P. australis as an efficient lignin degrader by demonstrating the highest activity of two important LMEs.
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Affiliation(s)
| | - Nik Azimatolakma Awang
- School of Civil Engineering, Engineering Campus, Universiti Sains Malaysia, 14300 Nibong Tebal, Penang, Malaysia
| | - Masratul Hawa Mohd
- School of Biological Sciences, Universiti Sains Malaysia, 11800 Penang, Malaysia
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Yang J, Woo JJ, Oh SY, Kim W, Hur JS. Fungal community inside lichen: a curious case of sparse diversity and high modularity. ENVIRONMENTAL MICROBIOME 2023; 18:73. [PMID: 37789449 PMCID: PMC10548754 DOI: 10.1186/s40793-023-00531-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2023] [Accepted: 09/27/2023] [Indexed: 10/05/2023]
Abstract
BACKGROUND Lichens represent not only the mutualism of fungal and photosynthetic partners but also are composed of microbial consortium harboring diverse fungi known as endolichenic fungi. While endolichenic fungi are known to exert a remarkable influence on lichen ecology through their crucial roles in nutrient cycling, bioprospecting and biodiversity, the enigmatic community structures of these fungal inhabitants remain shrouded in mystery, awaiting further exploration and discovery. To address knowledge gap, we conducted metabarcoding on two lichens using 18S gene amplification, Dirinara applanta and Parmotrema tinctorum, and compared their microbial communities to those found in the pine bark to which the lichens were attached. Our hypothesis was that the endolichenic communities would exhibit distinct diversity patterns, community structures, network structures, and specialist composition compared to the surrounding epiphytic community. RESULTS Our investigation has shed light on the clear demarcation between the endolichenic and epiphytic fungal communities, as they exhibit markedly different characteristics that set them apart from each other. This research demonstrated that the endolichenic communities are less diverse as compared to the epiphytic communities. Through community similarity analysis, we observed that two endolichenic communities are more similar to each other in terms of community composition than with the adjacent epiphytic communities. Moreover, we unveiled a striking contrast in the network structures between the endolichenic and epiphytic communities, as the former displayed a more modular and less nested features that is evocative of a potent host-filtration mechanism. CONCLUSIONS Through our investigation, we have discovered that lichens harbor less intricate and interconnected fungal communities compared to the neighboring epiphytic environment. These observations provide valuable insights into the metagenomic architecture of lichens and offer a tantalizing glimpse into the unique mycobiome.
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Affiliation(s)
- Jiho Yang
- Korean Lichen Research Institute, Sunchon National University, 255 Jungang-ro, Suncheon, 57922, South Korea
- Department of Biology, Sunchon National University, 255 Jungang-ro, Suncheon, 57922, South Korea
| | - Jung-Jae Woo
- Korean Lichen Research Institute, Sunchon National University, 255 Jungang-ro, Suncheon, 57922, South Korea
- Department of Biology, Sunchon National University, 255 Jungang-ro, Suncheon, 57922, South Korea
| | - Seung-Yoon Oh
- Department of Biology and Chemistry, Changwon National University, 20 Changwondaehak-ro, Changwon, 51140, South Korea
| | - Wonyong Kim
- Korean Lichen Research Institute, Sunchon National University, 255 Jungang-ro, Suncheon, 57922, South Korea
| | - Jae-Seoun Hur
- Korean Lichen Research Institute, Sunchon National University, 255 Jungang-ro, Suncheon, 57922, South Korea.
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Lee S, Park IG, Choi JW, Son JY, Lee JW, Hur JS, Kim Y, Nam SJ, Kang HS, Deyrup ST, Noh M, Shim SH. Daldipyrenones A-C: Caged [6,6,6,6,6] Polyketides Derived from an Endolichenic Fungus Daldinia pyrenaica 047188. Org Lett 2023; 25:6725-6729. [PMID: 37650559 DOI: 10.1021/acs.orglett.3c02583] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
Abstract
Daldipyrenones A-C (1-3), three unprecedented caged xanthone [6,6,6,6,6] polyketides featuring a spiro-azaphilone unit, were discovered from an endolichenic fungus, Daldinia pyrenaica 047188. The structures of 1-3 were determined by using spectroscopic analysis and chemical derivatization. Daldipyrenones are likely derived by combining a chromane biosynthesis intermediate, 1-(2,6-dihydroxyphenyl)but-2-en-2-one, and a spiro-azaphilone, pestafolide A, via radical coupling or Michael addition to form a bicyclo[2.2.2]octane ring. Genome sequencing of the strain revealed two separate biosynthetic gene clusters responsible for forming two biosynthetic intermediates, suggesting a proposed biosynthetic pathway. Daldipyrenone A (1) exhibited significant antimelanogenic activity with lower EC50's than positive controls and moderate adiponectin-secretion promoting activity.
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Affiliation(s)
- Seungjin Lee
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - In Guk Park
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Jin Won Choi
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Jin Young Son
- College of Pharmacy, Duksung Women's University, Seoul 01369, Republic of Korea
| | - Jin Woo Lee
- College of Pharmacy, Duksung Women's University, Seoul 01369, Republic of Korea
| | - Jae-Seoun Hur
- Korean Lichen Research Institute, Sunchon National University, Suncheon 57922, Republic of Korea
| | - Youngmee Kim
- Department of Chemistry and Nanoscience, College of Natural Sciences, Ewha Womans University, Seoul 03760, Republic of Korea
| | - Sang-Jip Nam
- Department of Chemistry and Nanoscience, College of Natural Sciences, Ewha Womans University, Seoul 03760, Republic of Korea
| | - Hahk-Soo Kang
- Department of Biomedical Science and Engineering, Konkuk University, Seoul 05029, Republic of Korea
| | - Stephen T Deyrup
- Department of Chemistry and Biochemistry, Siena College, Londonville, New York 12211, United States
| | - Minsoo Noh
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Sang Hee Shim
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
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Lichen and Lichenicolous Fungal Communities Tested as Suitable Systems for the Application of Cross-Taxon Analysis. DIVERSITY 2023. [DOI: 10.3390/d15020285] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/18/2023]
Abstract
Lichens are outstanding examples of fungal symbioses that form long-lived structures, the lichen thalli, in which a multiplicity of other microorganisms are hosted. Among these, microfungi seem to establish diverse trophic relationships with their lichen hosts. The most specialised of these fungi are the parasitic lichenicolous fungi, of which the diversity has hardly been explained as a proxy for the diversity of lichen species. Here, we used an exemplar dataset of a well-studied alpine lichen community composed of 63 lichen and 41 lichenicolous fungal species and tested it to verify the strength of the co-occurrences of the two species groups with predictive co-correspondence analyses. The results showed that the distribution of lichen abundances affects the abundance and variation of lichenicolous fungi and supports our hypothesis to use lichens as surrogates for lichenicolous fungi in surrogacy analysis.
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Grishkan I, Temina M. Composition and diversity of endolichenic microfungal communities from saxicolous lichens at Nahal Boker, the central Negev Desert, Israel. FUNGAL ECOL 2023. [DOI: 10.1016/j.funeco.2022.101196] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Yang JH, Oh SY, Kim W, Hur JS. Endolichenic Fungal Community Analysis by Pure Culture Isolation and Metabarcoding: A Case Study of Parmotrema tinctorum. MYCOBIOLOGY 2022; 50:55-65. [PMID: 35291596 PMCID: PMC8890557 DOI: 10.1080/12298093.2022.2040112] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2021] [Revised: 02/03/2022] [Accepted: 02/06/2022] [Indexed: 05/31/2023]
Abstract
Lichen is a symbiotic mutualism of mycobiont and photobiont that harbors diverse organisms including endolichenic fungi (ELF). Despite the taxonomic and ecological significance of ELF, no comparative investigation of an ELF community involving isolation of a pure culture and high-throughput sequencing has been conducted. Thus, we analyzed the ELF community in Parmotrema tinctorum by culture and metabarcoding. Alpha diversity of the ELF community was notably greater in metabarcoding than in culture-based analysis. Taxonomic proportions of the ELF community estimated by metabarcoding and by culture analyses showed remarkable differences: Sordariomycetes was the most dominant fungal class in culture-based analysis, while Dothideomycetes was the most abundant in metabarcoding analysis. Thirty-seven operational taxonomic units (OTUs) were commonly observed by culture- and metabarcoding-based analyses but relative abundances differed: most of common OTUs were underrepresented in metabarcoding. The ELF community differed in lichen segments and thalli in metabarcoding analysis. Dissimilarity of ELF community intra lichen thallus increased with thallus segment distance; inter-thallus ELF community dissimilarity was significantly greater than intra-thallus ELF community dissimilarity. Finally, we tested how many fungal sequence reads would be needed to ELF diversity with relationship assays between numbers of lichen segments and saturation patterns of OTU richness and sample coverage. At least 6000 sequence reads per lichen thallus were sufficient for prediction of overall ELF community diversity and 50,000 reads per thallus were enough to observe rare taxa of ELF.
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Affiliation(s)
- Ji Ho Yang
- Department of Biology, Sunchon National University, Suncheon, Korea
| | - Seung-Yoon Oh
- Department of Biology and Chemistry, Changwon National University, Changwon, South Korea
| | - Wonyong Kim
- Korean Lichen Research Institute, Sunchon National University, Suncheon, Korea
| | - Jae-Seoun Hur
- Korean Lichen Research Institute, Sunchon National University, Suncheon, Korea
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Yang JH, Oh SY, Kim W, Woo JJ, Kim H, Hur JS. Effect of Isolation Conditions on Diversity of Endolichenic Fungal Communities from a Foliose Lichen, Parmotrema tinctorum. J Fungi (Basel) 2021; 7:jof7050335. [PMID: 33926112 PMCID: PMC8146534 DOI: 10.3390/jof7050335] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Revised: 04/15/2021] [Accepted: 04/23/2021] [Indexed: 11/22/2022] Open
Abstract
Endolichenic fungi (ELF) are emerging novel bioresources because their diverse secondary metabolites have a wide range of biological activities. Metagenomic analysis of lichen thalli demonstrated that the conventional isolation method of ELF covers a very limited range of ELF, and the development of an advanced isolation method is needed. The influence of four variables were investigated in this study to determine the suitable conditions for the isolation of more diverse ELF from a radially growing foliose lichen, Parmotrema tinctorum. Four variables were tested: age of the thallus, severity of surface-sterilization of the thallus, size of a thallus fragment for the inoculation, and nutrient requirement. In total, 104 species (1885 strains) of ELF were isolated from the five individual thalli of P. tinctorum collected at five different places. Most of the ELF isolates belong to Sordariomycetes. Because each part of lichen thallus (of different age) has unique ELF species, the whole thallus of the foliose lichen is needed to isolate diverse ELF. Moderate sterilization is appropriate for the isolation of diverse ELF. Inoculation of small fragment (1 mm2) of lichen thallus resulted in the isolation of highest diversity of ELF species compared to larger fragments (100 and 25 mm2). Moreover, ELF species isolated from the small thallus fragments covered all ELF taxa detected from the medium and the large fragments in this study. The use of two media—Bold’s basal medium (nutrient poor) and potato dextrose agar (nutrient rich)—supported the isolation of diverse ELF. Among the tested variables, size of thallus fragment more significantly influenced the isolation of diverse ELF than other three factors. Species composition and richness of ELF communities from different lichen thalli differed from each other in this study.
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Affiliation(s)
- Ji Ho Yang
- Korean Lichen Research Institute, Sunchon National University, 255 Jungang-Ro, Suncheon 57922, Korea; (J.H.Y.); (W.K.); (J.-J.W.); (H.K.)
| | - Seung-Yoon Oh
- Department of Biology and Chemistry, Changwon National University, 20 Changwondaehak-ro, Changwon 51140, Korea;
| | - Wonyong Kim
- Korean Lichen Research Institute, Sunchon National University, 255 Jungang-Ro, Suncheon 57922, Korea; (J.H.Y.); (W.K.); (J.-J.W.); (H.K.)
| | - Jung-Jae Woo
- Korean Lichen Research Institute, Sunchon National University, 255 Jungang-Ro, Suncheon 57922, Korea; (J.H.Y.); (W.K.); (J.-J.W.); (H.K.)
| | - Hyeonjae Kim
- Korean Lichen Research Institute, Sunchon National University, 255 Jungang-Ro, Suncheon 57922, Korea; (J.H.Y.); (W.K.); (J.-J.W.); (H.K.)
| | - Jae-Seoun Hur
- Korean Lichen Research Institute, Sunchon National University, 255 Jungang-Ro, Suncheon 57922, Korea; (J.H.Y.); (W.K.); (J.-J.W.); (H.K.)
- Correspondence: ; Tel.: +82-61-750-3383
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Tuovinen V, Millanes AM, Freire-Rallo S, Rosling A, Wedin M. Tremella macrobasidiata and Tremella variae have abundant and widespread yeast stages in Lecanora lichens. Environ Microbiol 2021; 23:2484-2498. [PMID: 33684261 DOI: 10.1111/1462-2920.15455] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Revised: 03/03/2021] [Accepted: 03/03/2021] [Indexed: 01/22/2023]
Abstract
Dimorphism is a widespread feature of tremellalean fungi in general, but a little-studied aspect of the biology of lichen-associated Tremella. We show that Tremella macrobasidiata and Tremella variae have an abundant and widespread yeast stage in their life cycles that occurs in Lecanora lichens. Their sexual filamentous stage is restricted to a specific lichen: T. macrobasidiata only forms basidiomata on Lecanora chlarotera hymenia and T. variae only on Lecanora varia thalli. However, the yeast stage of T. macrobasidiata is less specific and can occur in L. varia lichens, whilst all life stages of T. variae may be specific to L. varia. Contrary to the hyphal stages, the yeasts are distributed across the thalli and hymenia of Lecanora lichens, and not limited to specimens with basidiomata. Tremella macrobasidiata was present in all studied L. chlarotera, and in 59% of L. varia specimens. Only in 8% of the L. varia thalli could none of the two Tremella species be detected. Our results indicate that lichen-associated Tremella may be much more abundant and widespread than previously assumed leading to skewed estimations about their distribution ranges and lichen specificity, and raise new questions about their biology, ecology and function in the symbiosis.
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Affiliation(s)
- Veera Tuovinen
- Department of Ecology and Genetics, Uppsala University, Uppsala, Norbyvägen 18D, 752 36, Sweden.,Department of Botany, Swedish Museum of Natural History, Stockholm, P.O. Box 50007, SE-104 05, Sweden
| | - Ana Maria Millanes
- Departamento de Biología y Geología, Física y Química Inorgánica, Universidad Rey Juan Carlos, Móstoles, E-28933, Spain
| | - Sandra Freire-Rallo
- Departamento de Biología y Geología, Física y Química Inorgánica, Universidad Rey Juan Carlos, Móstoles, E-28933, Spain
| | - Anna Rosling
- Department of Ecology and Genetics, Uppsala University, Uppsala, Norbyvägen 18D, 752 36, Sweden
| | - Mats Wedin
- Department of Botany, Swedish Museum of Natural History, Stockholm, P.O. Box 50007, SE-104 05, Sweden
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