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Title: Leptographium tereforme, sp. nov. and other Ophiostomatales isolated from the redhaired pine bark beetle, Hylurgus ligniperda, in California

Author: Kim, S.; Harrington, T.C.; Lee, J. C.; Seybold, S. J.;

Date: 2011

Source: Mycologica 103(1):152-163

Publication Series: Scientific Journal (JRNL)

Description: The redhaired pine bark beetle Hylurgus ligniperda (F.) is native to Europe but was discovered in Los Angeles, California, in 2003. This root- and stump-feeding beetle is a common vector of Ophiostomatales, which are potential tree pathogens or causes of blue stain of conifer sapwood. In this study Ophiostomatales were isolated on a cycloheximideamended medium from 118 adult H. ligniperda collected from infested logs of Pinus halepensis and P. pinea at two sites in California. In total eight species of Ophiostomatales were identified and seven species that occasionally were isolated were unidentified. The most frequently isolated species were Ophiostoma ips and Grosmannia galeiforme, which were isolated respectively from 31% and 23% of the 118 beetles. The other species isolated included O. piceae (isolated from 9% of the beetles), O. querci (8%) and Leptographium tereforme sp. nov. (6%). Grosmannia huntii, L. serpens, three Sporothrix species, O. floccosum, O. stenoceras, two unidentified Hyalorhinocladiella sp. and a sterile fungus each were isolated from fewer then 5% of beetles. Most of the identified species already were known in USA and have been found in association with H. ligniperdain other countries. However the new species, L. tereforme, and G. galeiforme were recorded from USA for the first time, and this is the first report of L. serpens from western North America.

Keywords: Grosmannia galeiforme, Grosmannia huntii, Hyalorhinocladiella spp., Leptographium serpens, Leptographium tereforme, Ophiostoma ips, Ophiostoma piceae, Ophiostoma querci, redhaired pine bark beetle, Sporothrix spp.

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Kim, S.; Harrington, T.C.; Lee, J. C.; Seybold, S. J. 2011. Leptographium tereforme, sp. nov. and other Ophiostomatales isolated from the redhaired pine bark beetle, Hylurgus ligniperda, in California. Mycologica 103(1):152-163. doi:10.3852/10-096.

 


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