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首页> 外文期刊>Antonie van Leeuwenhoek: Journal of Microbiology and serology >Ophiostomatoid fungi (Ascomycota) associated with Pinus tabuliformis infested by Dendroctonus valens (Coleoptera) in northern China and an assessment of their pathogenicity on mature trees.
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Ophiostomatoid fungi (Ascomycota) associated with Pinus tabuliformis infested by Dendroctonus valens (Coleoptera) in northern China and an assessment of their pathogenicity on mature trees.

机译：在中国北方地区，与油松（Dendroctonus valens（Coleoptera））侵染的油松真菌（Ascomycota）有关，并对其致病性进行了评估。

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摘要

Dendroctonus valens is an invasive pest in coniferous forests of northern China. It was suspected of being responsible for the death of more than three million Pinus tabuliformis trees. The present study sought to identify the ophiostomatoid fungi associated with D. valens in northern China and understand the possible role of these fungi in the pine decline. On the basis of morphology, physiology, mating compatibility and phylogenetic analyses of multiple DNA sequences, seven species of ophiostomatoid fungi were isolated from and around D. valens galleries: Leptographium alethinum, Grosmannia koreana (teleomorph of L. koreanum), L. procerum, L. sinoprocerum, L. truncatum, Pesotum aureum and P. pini. All have been recorded for the first time in China. Among them, the occurrence of the dominant species L. procerum is positively linked to attack intensities of D. valens. The pathogenicity of four species (L. koreanum, L. procerum, L. sinoprocerum and L. truncatum) was tested on mature P. tabuliformis trees by stem inoculation. All inoculated strains caused significant necrotic lesions on the inner bark. However, L. koreanum and L. truncatum induced more extensive lesions than L. procerum and L. sinoprocerum. Their association with D. valens and the P. tabuliformis decline is discussed.
机译：Dendroctonus valens是中国北方针叶林的一种入侵性害虫。有人怀疑这是造成三百万棵油松树死亡的原因。本研究旨在鉴定与华北地区缬草相关的气眼类真菌，并了解这些真菌在松树衰退中的可能作用。根据形态学，生理学，交配相容性和多个DNA序列的系统发育分析，从D. valens画廊及其周围地区分离出7种类蛇mat类真菌：绿唇形象属，Grosmannia koreana（大叶紫菜的变种），L。procerum，中华乳杆菌，矮牵牛，金黄色葡萄球菌和松树。所有这些都是在中国首次录制的。其中，优势种L. procerum的出现与D. valens的攻击强度呈正相关。通过茎接种在成熟油松树上测试了四种物种（朝鲜乳杆菌，普氏乳杆菌，正中乳杆菌和矮牵牛乳）的致病性。所有接种的菌株在内部树皮上引起明显的坏死性病变。但是，韩国扁豆和截短木L. procerum和L. sinoprocerum引起的病灶更广泛。讨论了它们与val。D. valens和油松假单胞菌下降的关系。

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