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Leptographium bhutanense sp. nov., associated with the root collar weevil Hylobitelus chenkupdorjii on Pinus wallichiana in Bhutan Naturalis
Zhou, X.D.; Jacobs, K.; Kirisits, T.; Chhetri, D.B.; Wingfield, M.J..
Leptographium spp. are commonly associated with bark beetles and weevils (Coleoptera: Curculionidae), and some are important tree pathogens. In a recent survey of diseases and insect pests of conifer trees in Bhutan, the root collar weevil, Hylobitelus chenkupdorjii was found girdling young Himalayan blue pine (Pinus wallichiana) trees in Central Bhutan. Intensive wood staining and a Leptographium sp. were associated with damage by this insect. The fungus was also isolated from individuals of H. chenkupdorjii. It was tentatively identified based on morphology and then compared with other Leptographium spp. using DNA sequences for three gene regions. Morphological characteristics showed that the Leptographium sp. from H. chenkupdorjii is similar to, but...
Tipo: Article / Letter to the editor Palavras-chave: Curculionidae; Forest pests; Hylobitelus; Leptographium; Ophiostomatoid fungi.
Ano: 2008 URL: http://www.repository.naturalis.nl/record/531695
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Ceratocystis larium sp. nov., a new species from Styrax benzoin wounds associated with incense harvesting in Indonesia Naturalis
Wyk, M. van; Wingfield, B.D.; Clegg, P.A.; Wingfield, M.J..
Styrax benzoin trees, native to the island Sumatra, Indonesia are wounded to produce resin that is collected and burned as incense. These wounds on trees commonly develop into expanding cankers that lead to tree death. The aim of this study was to consider whether Ophiostomatoid fungi, typically associated with wounds on trees might be associated with resin harvesting on S. benzoin. Samples were collected from the edges of artificially induced wounds, and particularly where cankers and staining of the vascular tissue was evident. Tissue samples were incubated in moist chambers and carrot baiting was also used to detect the presence of Ceratocystis spp. Fruiting structures with morphology typical of species in the C. fimbriata s.l. species complex and...
Tipo: Article / Letter to the editor Palavras-chave: Ophiostomatoid fungi; Phylogenetic inference; Vascular staining.
Ano: 2009 URL: http://www.repository.naturalis.nl/record/532359
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