Molecular Identification of Mycorrhizae of<i>Cymbidium kanran</i>(Orchidaceae) on Jeju Island, Korea

Hong, Ji Won; Suh, Hyoungmin; Kim, Oh Hong; Lee, Nam Sook

doi:10.5941/myco.2015.43.4.475

Cited by 3 publications

(6 citation statements)

References 23 publications

(24 reference statements)

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“…In addition to occurring as a culturable endophyte in Leucobryum (AZ0501; U' Ren et al 2010), environmental data show that related strains have been detected as a root-associated fungus of the orchid Cymbidium kanran (KU141166; Hong et al 2015) and sweet chestnut, Castanea sativa (EF040836; Peintner et al 2007).…”

Section: Resultsmentioning

confidence: 99%

Bifiguratus adelaidae, gen. et sp. nov., a new member of Mucoromycotina in endophytic and soil-dwelling habitats

et al. 2017

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Illumina amplicon sequencing of soil in a temperate pine forest in the southeastern United States detected an abundant, nitrogen (N)-responsive fungal genotype of unknown phylogenetic affiliation. Two isolates with ribosomal sequences consistent with that genotype were subsequently obtained. Examination of records in GenBank revealed that a genetically similar fungus had been isolated previously as an endophyte of moss in a pine forest in the southwestern United States. The three isolates were characterized using morphological, genomic, and multilocus molecular data (18S, internal transcribed spacer [ITS], and 28S rRNA sequences). Phylogenetic and maximum likelihood phylogenomic reconstructions revealed that the taxon represents a novel lineage in Mucoromycotina, only preceded by Calcarisporiella, the earliest diverging lineage in the subphylum. Sequences for the novel taxon are frequently detected in environmental sequencing studies, and it is currently part of UNITE's dynamic list of most wanted fungi. The fungus is dimorphic, grows best at room temperature, and is associated with a wide variety of bacteria. Here, a new monotypic genus, Bifiguratus, is proposed, typified by Bifiguratus adelaidae. ARTICLE HISTORY

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Section: Resultsmentioning

confidence: 99%

Bifiguratus adelaidae, gen. et sp. nov., a new member of Mucoromycotina in endophytic and soil-dwelling habitats

et al. 2017

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“…The order Tremellales includes a large number of yeasts, saprotrophic and lichen-forming species (Millanes et al 2011; Liu et al 2015; Kurtzman & Boekhout 2017). Six OTUs in this order were recovered from the roots of orchid species (Table S3), but their ecological role is unclear (Martos et al 2012; Hong et al 2015).…”

Section: Resultsmentioning

confidence: 99%

“…( Helotiales incertae sedis ) was able to invade the velamen layer of D. nobile roots, penetrate through passage cells and form fungal pelotons in cortex cells (Hou & Guo 2009). Furthermore, Helotiales members have been repeatedly detected in the rhizosphere and roots of several orchid genera, including Anacamptis (Pecoraro et al 2018), Cattleya (Oliveira et al 2014), Cephalanthera (Julou et al 2005; Abadie et al 2006), Chloraea (Herrera et al 2017), Cymbidium (Shefferson et al 2005; Hong et al 2015), Cypripedium (Oja et al 2015), Dactylorhiza (Schiebold et al 2018), Epipactis (Bidartondo et al 2004; Jacquemyn et al 2016; Xing et al 2020), Goodyera (Shefferson et al 2010), Gymnadenia (Stark et al 2009; Xing et al 2020), Himantoglossum (Pecoraro et al 2013), Malaxis (Schiebold et al 2018), Liparis (Schiebold et al 2018), Neottia (Bidartondo et al 2004; Oja et al 2015; Těšitelová et al 2015), Orchis (Oja et al 2015), Platanthera (Esposito et al 2016), Pleione (Qin et al 2019), Pseudorchis (Kohout et al 2013) and Spiranthes (Tondello et al 2012). However, more morphological and physiological evidence is needed to confirm the mycorrhizal status of Helotiales fungi in orchids.…”

Section: Resultsmentioning

confidence: 99%

“…In this study, a total of 27 OTUs of three Eurotiales families were found: apart from one OTU belonging to ectomycorrhizal Elaphomycetaceae , the remaining OTUs were assigned to Aspergillaceae and Trichocomaceae , comprising saprotrophic members (Table S3). Members of Eurotiales have only been occasionally isolated from orchid roots or rhizospheres, but so far their mycorrhizal status with orchids has not been verified (Dearnaley & Le Brocque 2006; Oliveira et al 2014; Hong et al 2015; Herrera et al 2017; González-Chávez et al 2018).…”

Section: Resultsmentioning

confidence: 99%

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Root-associated Fungi in Orchidaceae: Diversity, Phylogeny, Ecology, and Outstanding Questions

Wang

Lerou

Nuytinck

et al. 2022

Preprint

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Mycorrhizal fungi form ubiquitous symbiotic associations with almost all land plants and are of key interest to evolutionary biologists and ecologists because this ancient symbiosis was essential for the colonization of land by plants, a major turning point in the evolutionary history of the earth, and the subsequent development and functioning of the terrestrial ecosystems. Within the orchid family (Orchidaceae), plants establish unique interactions with specific orchid mycorrhizal fungi. These fungal symbionts are essential for the development of orchids as they provide carbon and soil nutrients to germinating orchid seeds and the nutritional supply continues for adult orchids to different degrees. Fueled by the development of DNA sequencing techniques, the diversity of mycorrhizal and other root-associated fungi in orchid roots has been extensively reported in evolutionary and ecophysiological studies. However, the full taxonomic range of orchid-associated fungi remains to be investigated in a broad phylogenetic framework, hampering a further understanding of the evolution and ecological adaptation of orchid mycorrhizal interactions. In this study, we used the most complete DNA dataset to date to map the phylogenetic distribution and ecological lifestyles of root-associated fungi in Orchidaceae by phylogenetic reconstructions at the fungal order level. We found that a broad taxonomic range of fungi (clustered into 1898 operational taxonomic units) resided in orchid roots, belonging to at least 150 families in 28 orders in Basidiomycota and Ascomycota. These fungi were assigned to diverse ecological lifestyles including typical orchid mycorrhizal fungi ("rhizoctonia"), ectomycorrhizal fungi, wood- or litter-decaying saprotrophic fungi, and other endophytes/pathogens/saprotrophs. This overview reveals that among the four different mycorrhizal types, the orchid mycorrhizal symbiosis probably involves the highest diversity of fungal taxa. We hope that our newly reconstructed phylogenetic framework of orchid-associated fungi and the assessment of their potential mycorrhizal status will benefit future ecological and evolutionary studies on orchid-fungal interactions.

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“…Fr. Are symbionts of C. kanran (Hong et al, 2015). ese fungi belong to the species-rich genus forming ectomycorrhizal symbiosis with many species of trees and shrubs (Kirk et al, 2008).…”

Section: Species Studiedmentioning

confidence: 99%

The long-term survival and climatic distribution of mixotrophic and mycoheterotrophic orchids

Kolanowska,

Ruszkiewicz-Michalska

2023

Acta Soc Bot Pol

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Orchid germination depends on their fungal partner; however, there are no broadscale analyses evaluating the actual overlap between orchids and their mycorrhizal symbionts. The aim of this research was to evaluate the importance of mycorrhizal fungi for the occurrence of two species of orchids using ecological niche modeling (ENM). Two sets of future orchid distribution models were created – the first one was based on bioclimatic data only, and the second one included information about the distribution of fungal symbionts. The jackknife test indicated that for both mixotrophic and mycoheterotrophic orchids, the presence of symbiotic fungi is crucial for their occurrence, and ENM analyses revealed that both orchids face habitat loss as a result of predicted changes in climate. In the case of the mixotrophic orchid, the presence of symbiotic fungi can compensate for unfavorable climatic conditions. Problems and limitations in modeling the distributions of species are discussed in terms of the symbiotic relationship.

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Molecular Identification of Mycorrhizae ofCymbidium kanran(Orchidaceae) on Jeju Island, Korea

Cited by 3 publications

References 23 publications

Bifiguratus adelaidae, gen. et sp. nov., a new member of Mucoromycotina in endophytic and soil-dwelling habitats

Bifiguratus adelaidae, gen. et sp. nov., a new member of Mucoromycotina in endophytic and soil-dwelling habitats

Root-associated Fungi in Orchidaceae: Diversity, Phylogeny, Ecology, and Outstanding Questions

The long-term survival and climatic distribution of mixotrophic and mycoheterotrophic orchids

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