Geosmithia Species Associated With Bark Beetles From Southern China, With the Description of Four New Species release_u4pwcwrgabbxhp7dfjjp27jwb4

by Xiuyu Zhang, You Li, Meixue Dai, Hongli Si, Guoyan Zhao, Miroslav Kolařík, Jiri Hulcr, Xiaoqian Jiang, Runlei Chang

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<jats:title>Abstract</jats:title> Fungi of the genus <jats:italic>Geosmithia</jats:italic> are frequently associated with bark beetles that feed on phloem on various woody hosts. Most studies on <jats:italic>Geosmithia</jats:italic> were carried out in North and South America and Europe, with only two species were reported from Taiwan, China. The aim of this study was to investigate the diversity of <jats:italic>Geosmithia</jats:italic> species in southern China. Field surveys in Guangdong, Guangxi, Hunan, Jiangxi and Shanghai yielded a total of 76 fungal isolates from six beetle species. Isolates were grouped based on morphology. The ITS, β-tubulin and elongation factor 1-α gene regions of representatives of each group were sequenced. Phylogenetic trees were constructed based on those sequences. In total five species were identified, with one previously described species <jats:italic>G. putterillii</jats:italic> and four new species which were described as <jats:italic>G. jiulianshanensis</jats:italic>, <jats:italic>G. jiangxiensis</jats:italic>, <jats:italic>G. formosana</jats:italic>, and <jats:italic>G. pulverea</jats:italic> (<jats:italic>Geosmithia</jats:italic> sp. 3 and <jats:italic>Geosmithia</jats:italic> sp. 23) sp. nov., in this paper.
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