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In this study we review recent collections and historical records of epigeous members of the Pezizales formerly placed in the large, heterogenous genus Peziza from temperate southern South America. Recent analyses using molecular phylogenetic methods allow placement of these species in several previously described genera in recognition of the heterogeneity of Peziza. We include species in nine genera, describe one new species (Peziza gamundiae sp. nov.), and propose one new combination (Phylloscypha nothofageti comb. nov.). We also demonstrate that Pustularia microspora is a synonym of the previously described taxon Peziza pseudosylvestris. Our purpose is to draw attention to these taxa in order to promote their collection and study in a modern framework.more » « less
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Lu, Jade ; Magain, Nicolas ; Miadlikowska, Jolanta ; Coyle, Jessica R. ; Truong, Camille ; Lutzoni, François ( , American Journal of Botany)
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Truong, Camille ; Gabbarini, Luciano A. ; Corrales, Adriana ; Mujic, Alija B. ; Escobar, Julio M. ; Moretto, Alicia ; Smith, Matthew E. ( , New Phytologist)
Summary The biological and functional diversity of ectomycorrhizal (
ECM ) associations remain largely unknown in South America. In Patagonia, theECM treeNothofagus pumilio forms monospecific forests along mountain slopes without confounding effects of vegetation on plant–fungi interactions.To determine how fungal diversity and function are linked to elevation, we characterized fungal communities, edaphic variables, and eight extracellular enzyme activities along six elevation transects in Tierra del Fuego (Argentina and Chile). We also tested whether pairing
ITS 1rDNA Illumina sequences generated taxonomic biases related to sequence length.Fungal community shifts across elevations were mediated primarily by soil
pH with the most species‐rich fungal families occurring mostly within a narrowpH range. By contrast, enzyme activities were minimally influenced by elevation but correlated with soil factors, especially total soil carbon. The activity of leucine aminopeptidase was positively correlated withECM fungal richness and abundance, and acid phosphatase was correlated with nonECM fungal abundance. Several fungal lineages were undetected when using exclusively paired or unpaired forwardITS 1 sequences, and these taxonomic biases need reconsideration for future studies.Our results suggest that soil fungi in
N. pumilio forests are functionally similar across elevations and that these diverse communities help to maintain nutrient mobilization across the elevation gradient. -
Truong, Camille ; Mujic, Alija B. ; Healy, Rosanne ; Kuhar, Francisco ; Furci, Giuliana ; Torres, Daniela ; Niskanen, Tuula ; Sandoval-Leiva, Pablo A. ; Fernández, Natalia ; Escobar, Julio M. ; et al ( , New Phytologist)