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Two new species of Leptographium from Dryocetes authographus and Hylastes cunicularius in Norway

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Abstract

The anamorph genus Leptographium Lagerberg and Melin includes species that are typically bark beetle-associated fungi, with teleomorphs in Grosmannia. During a survey of ophiostomatoid fungi in Norway, two unusual species, that fit the broader morphological description of Leptographium, were isolated directly from the root-feeding beetles, Dryocetes authographus and Hylastes cunicularius, as well as from roots infested by these insects. The first of these could be distinguished from other described species based on a sparse sporulation, black spore drops and chlamydospores in older cultures. This species also produces a Hyalorhinocladiella synanamorph. The second species was characterised by distinctly curved conidia. Based on these unusual morphological characteristics and distinct DNA sequences, these fungi were recognised as new taxa for which the names Leptographium chlamydatum sp. nov. and L. curvisporum sp. nov. are provided.

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Acknowledgements

We acknowledge the National Research Foundation (NRF), Tree Pathology Cooperative Programme (TPCP), University of Pretoria, South Africa; Norwegian Research Council (NFR) and Norwegian Forest and Landscape Institute (Skog og landskap) for financial support. We are also indebted to Dr. Hugh Glen for providing the Latin diagnoses.

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Authors and Affiliations

  1. Department of Microbiology, University of Stellenbosch, Stellenbosch, 7600, South Africa

    Karin Jacobs

  2. Norwegian Forest and Landscape Institute, P.O. Box 115, 1431, Ås, Norway

    Paal Krokene & Halvor Solheim

  3. Forestry and Agricultural Biotechnology Institute, University of Pretoria, Pretoria, 0002, South Africa

    Michael J. Wingfield

Authors
  1. Karin Jacobs
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  2. Paal Krokene
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  3. Halvor Solheim
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  4. Michael J. Wingfield
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Correspondence to Karin Jacobs.

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Jacobs, K., Krokene, P., Solheim, H. et al. Two new species of Leptographium from Dryocetes authographus and Hylastes cunicularius in Norway. Mycol Progress 9, 69–78 (2010). https://doi.org/10.1007/s11557-009-0620-6

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  • DOI: https://doi.org/10.1007/s11557-009-0620-6

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