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  • Title: Acidomelania panicicola gen. et sp. nov. from switchgrass roots in acidic New Jersey pine barrens.
    Author: Walsh E, Luo J, Zhang N.
    Journal: Mycologia; 2014; 106(4):856-64. PubMed ID: 24891423.
    Abstract:
    A new genus, Acidomelania, is described based on molecular phylogenetic analyses and ecological and morphological characters. Isolated from switchgrass roots in acidic and oligotrophic New Jersey pine barrens in this study, Acidomelania likely has a global distribution because its internal transcribed spacer (ITS) sequence has high similarity with a number of GenBank sequences resulted from various ecological studies. Apparently these samples all were from roots of plants that lived in acidic, nutrient-poor environments. Phylogenetic analyses based on ITS, LSU and ACT sequence data strongly supported the fact that Acidomelania isolates formed a monophyletic clade in Helotiales, distinct from any known taxa. Phylogenetically Acidomelania is closely related to Loramyces, Mollisia and Phialocephala fortinii, Acephala applanata species complex (PAC), the dark septate endophytes. Acidomelania also can be distinguished from Loramyces and Mollisia by its association with living grass roots. While taxa in PAC also are root endophytes, they have more complex phialid arrangement than Acidomelania. Results from this work will facilitate ecological and evolutionary studies on root-associated fungi.
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