Distribution and ecology of the ascomycete Sarcoleotia globosa in the United States

Jumpponen, Ari; Weber, Nancy S.; Trappe, James M.; Cázares, Efrén

doi:10.1139/b97-933

Cited by 10 publications

(4 citation statements)

References 2 publications

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“…It is often found in open vegetation and on disturbed ground (Schumacher and Sivertsen 1987;Jumpponen et al 1997), which fits the sample site of the B. vivipara root system used in this study. It has been suggested to have saprotrophic lifestyle, however, in a survey of stable isotopes, a relatively high enrichment in δ 15 N was shown for species within Geoglossales (Griffith et al 2002).…”

Section: Richness and Community Compositionmentioning

confidence: 53%

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A single ectomycorrhizal plant root system includes a diverse and spatially structured fungal community

et al. 2019

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Although only a relatively small proportion of plant species form ectomycorrhizae with fungi, it is crucial for growth and survival for a number of widespread woody plant species. Few studies have attempted to investigate the fine scale spatial structure of entire root systems of adult ectomycorrhizal (EcM) plants. Here, we use the herbaceous perennial Bistorta vivipara to map the entire root system of an adult EcM plant and investigate the spatial structure of its root associated fungi. All EcM root tips were sampled, mapped and identified using a direct PCR approach and Sanger sequencing of the ITS region. A total of 32.1 % of all sampled root tips (739 of 2302) were successfully sequenced and clustered into 41 OTUs. We observed a clear spatial structuring of the root associated fungi within the root system. Clusters of individual OTUs were observed in the younger parts of the root system, consistent with observations of priority effect in previous studies, but were absent from the older parts of the root system. This may suggest a succession and fragmentation of the root-associated fungi even at a very fine scale, where competition likely comes into play at different successional stages within the root system.

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Section: Richness and Community Compositionmentioning

confidence: 53%

“…S. globosa within Geoglossales forms small, stipitate fruit bodies, and due to its small size, most likely overlooked in field surveys. Its distribution has previously been described as arctic and sub-arctic, although stretching as far south as cool temperate (Jumpponen et al 1997).…”

Section: Richness and Community Compositionmentioning

confidence: 94%

A single ectomycorrhizal plant root system includes a diverse and spatially structured fungal community

et al. 2019

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“…An enclosed hymenium has been observed as well in several other lineages, such as Cyttaria , Erysiphales and Rhytismatales in the Leotiomycetes ( Korf 1983 , Gargas et al 1995 , Johnston 2001 ). Although the name earth tongue implies these fungi are terrestrial and have no direct association found with other organisms, Trichoglossum , Geoglossum and Sarcoleotia globosa have often been recorded in boggy habitats abundant with bryophytes ( Seaver 1951 , Dennis 1968 , Schumacher & Sivertsen 1987 , Spooner 1987 , Jumpponen et al 1997 , Zhuang 1998 ). Ascus apical morphology is one of the major features in distinguishing higher ascomycetes, and operculate ascomycetes as members of Pezizales have an apical or subapical operculum which is thrown back at spore discharge while a definite plug is present in the thickened ‘inoperculate’ ascus apex as in species of the Helotiales ( Korf 1973 ).…”

Section: Discussionmentioning

confidence: 99%

Geoglossomycetes cl. nov., Geoglossales ord. nov. and taxa above class rank in the Ascomycota Tree of Life

Schoch¹,

Wang²,

Townsend³

et al. 2009

Pers - Int Mycol J

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Featuring a high level of taxon sampling across Ascomycota, we evaluate a multi-gene phylogeny and propose a novel order and class in Ascomycota. We describe two new taxa, Geoglossomycetes and Geoglossales, to host three earth tongue genera: Geoglossum, Trichoglossum and Sarcoleotia as a lineage of ‘Leotiomyceta’. Correspondingly, we confirm that these genera are not closely related to the genera Neolecta, Mitrula, Cudonia, Microglossum, Thuemenidum, Spathularia and Bryoglossum, all of which have been previously placed within the Geoglossaceae. We also propose a non-hierarchical system for naming well-resolved nodes, such as ‘Saccharomyceta’, ‘Dothideomyceta’, and ‘Sordariomyceta’ for supraordinal nodes, within the current phylogeny, acting as rankless taxa. As part of this revision, the continued use of ‘Leotiomyceta’, now as a rankless taxon, is proposed.

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“…The aphothecia did not mature, but Currah et al (1993) suggested P. fortinii as an anamorph of an apothecial member of the Leotiales. Jumpponen et al (1997) pointed out that some members of the Leotiales are very inconspicuous and dark, easily escaping detection. Therefore, sexual reproduction is possible, and could explain the observed diversity, despite the lack of a known teleomorph.…”

Section: mentioning

confidence: 99%

Spatial distribution of discrete RAPD phenotypes of a root endophytic fungus, Phialocephala fortinii, at a primary successional site on a glacier forefront

Jumpponen

1999

New Phytologist

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Phialocephala fortinii is among the few identified hyphomycetes belonging to the Mycelium radicis atrovirens complex. This ' dark-septate endophyte ' has a global distribution and colonizes a wide variety of host plants. In this study, the spatial distribution of discrete genets of P. fortinii on the forefront of a receding glacier was analysed using the randomly amplified polymorphic DNA (RAPD) technique to determine plants colonized and patterns of colonization. In two consecutive years of sampling, a total of 74 isolates of P. fortinii were obtained from nine plant species, typically ectomycorrhizal, ericoid mycorrhizal or non-mycorrhizal. The isolates showed substantial variation, sharing on average approx. half the RAPD markers. In the first year, three isolates belonging to a single genet were obtained from two plants separated by a distance of nearly 1n5 m. The continuity of this genet was assessed by a sampling the following year. No isolates similar to that, or any of the genets collected the year before were observed. Consequently, the identical isolates from the previous year were concluded to represent discontinuous ramets. Two additional large genets were observed during the second year of sampling, which inhabited roots of several plants representing three different species. These data suggest that the sharing of P. fortinii genets among plant species might play a fundamental role in adaptation and interaction within the whole plant community in a system undergoing primary succession.

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Distribution and ecology of the ascomycete Sarcoleotia globosa in the United States

Cited by 10 publications

References 2 publications

A single ectomycorrhizal plant root system includes a diverse and spatially structured fungal community

A single ectomycorrhizal plant root system includes a diverse and spatially structured fungal community

<I>Geoglossomycetes</I> cl. nov., <I>Geoglossales</I> ord. nov. and taxa above class rank in the <I>Ascomycota</I> Tree of Life

Spatial distribution of discrete RAPD phenotypes of a root endophytic fungus, Phialocephala fortinii, at a primary successional site on a glacier forefront

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