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New species and reports of Hypoxylon from Argentina recognized by a polyphasic approach

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Abstract

A preliminary account of Hypoxylon species (Xylariaceae) from the hitherto widely unexplored “Yungas” mountain forests of Northwest Argentina is presented. Two new species are described based on extensive morphological, molecular (ITS region of rDNA, partial β-tubulin gene) and chemotaxonomic data. Hypoxylon spegazzinianum is close to H. erythrostroma, but differs by larger ascospores and a virgariella-like asexual morph. Hypoxylon calileguense resembles H. subgilvum when growing on wood, but can be distinguished by larger ascospores and a fawn to brick stromatal surface colour. Stromata found on bark have affinities to H. pelliculosum, but differ in their stromatal surface colour and conspicuous amyloid apical apparatus. In addition, nine taxa of Hypoxylon are reported for Argentina for the first time, and some details on their asexual state and stromatal secondary metabolites are reported. An updated dichotomous key for Hypoxylon species from Argentina is provided.

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Notes

  1. Actually, these authors have distinguished various subtypes of branching patterns according to the complexity of the conidiophores, which are here accepted in the species descriptions; see Stadler et al. (2014) for further explanation.

  2. The characteristics of this species are reported concurrently in by Li et al (2016, in press).

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Acknowledgments

The DAAD and the Argentina Ministerio de Ciencia, Tecnología e Innovación Productiva are gratefully acknowledged for an academic exchange grant. We gratefully acknowledge support from the curators of various international herbaria, above all, BPI, LPS, S and WSP, who provided important specimens for the present study. We are deeply indebted to Markus Scholler (KR) for realizing international loan transactions on our behalf. We would also like to express their gratitude to the Administration of National Parks of Argentina, the Ministry of the Environment of Salta Province and Provincial Direction of Biodiversity of Jujuy Province for authorization of collection. Manfred Rohde is thanked for SEM recordings. Simone Heitkämper, Anke Skiba, Cäcilia Schwager and Philine Wotsch are thanked for their assistance with handling of the Argentine strains.

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Authors and Affiliations

  1. Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina

    Esteban Benjamin Sir & Andrea I. Romero

  2. Mycology Laboratory, Fundación Miguel Lillo, Miguel Lillo 251, San Miguel de Tucumán, CP 4000, Tucumán, Argentina

    Esteban Benjamin Sir & Adriana I. Hladki

  3. Department Microbial Drugs, Helmholtz-Zentrum für Infektionsforschung GmbH, Inhoffenstrasse 7, 38124, Braunschweig, Germany

    Eric Kuhnert, Christopher Lambert & Marc Stadler

  4. German Centre for Infection Research (DZIF), partner site Hannover-Braunschweig, 38124, Braunschweig, Germany

    Eric Kuhnert, Christopher Lambert & Marc Stadler

  5. Departmento de Biodiversidad y Biología Experimental, Facultad de Ciencias Exactas y Naturales (UBA), PROPLAME-PRHIDEB, UBA-CONICET, Ciudad Universitaria, Pabellón II, 4to. Piso, CP1428EHA, Buenos Aires, Argentina

    Andrea I. Romero

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  1. Esteban Benjamin Sir
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  2. Eric Kuhnert
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  3. Christopher Lambert
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  4. Adriana I. Hladki
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  5. Andrea I. Romero
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  6. Marc Stadler
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Correspondence to Marc Stadler.

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Section Editor: Gerhard Rambold

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Sir, E.B., Kuhnert, E., Lambert, C. et al. New species and reports of Hypoxylon from Argentina recognized by a polyphasic approach. Mycol Progress 15, 42 (2016). https://doi.org/10.1007/s11557-016-1182-z

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  • DOI: https://doi.org/10.1007/s11557-016-1182-z

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