Two species of Leptographium isolated from blue-stained sapwood of Pinus khasya and bark beetles in Thailand

Yamaoka, Yuichi; Masuya, Hayato; Chung, Wen‐Hsin; Goto, Hideaki; To-anun, Chaiwat; Tokumasu, Seiji

doi:10.1007/s10267-006-0337-1

Cited by 7 publications

(7 citation statements)

References 7 publications

(10 reference statements)

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“…In this study, L. pini-densifl orae, which is found only in Japan and Thailand (Yamaoka et al 2007) at present, was isolated from T. piniperda, T. minor, C. fulvus, and O. angulatus, which are not root-feeding beetles. Generally, Leptographium species are known to be associated with root-feeding beetles or bark beetles that infest the lower part of trunks (Harrington 1988;Wingfi eld and Gibbs 1991).…”

Section: Discussionmentioning

confidence: 99%

Ophiostomatoid fungi isolated from Japanese red pine and their relationships with bark beetles

et al. 2009

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Section: Discussionmentioning

confidence: 99%

Ophiostomatoid fungi isolated from Japanese red pine and their relationships with bark beetles

et al. 2009

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“…The fourth most prevalent species collected in this study was G. yunnanensis including 39 isolates, 27 of which were vectored by seven mite species. G. yunnanensis was originally described from Tomicus yunnanensis on P. yunnanensis in China ( Zhou et al 2000 ), and was subsequently reported from Polygraphus major on Pinus kesiya in Thailand ( Yamaoka et al 2007 ), and four other pine bark beetle species on P. densiflora in Japan ( Masuya et al 2009 ). Results of the present study have added an additional three beetle species to this list including Cryphales luteus , Polygraphus szemaoensis and an unidentified Polygraphus sp.…”

Section: Discussionmentioning

confidence: 99%

Ophiostomatoid fungi associated with conifer-infesting beetles and their phoretic mites in Yunnan, China

Chang¹,

Duong²,

Taerum³

et al. 2017

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The Ophiostomatales is an Ascomycete order of fungi that accommodates several tree pathogens and many species that degrade wood. These fungi are commonly vectored by Scolytine bark and ambrosia beetles. In recent years it has also been shown that hyperphoretic mites on these beetles can vector some Ophiostomatales. Little is known regarding the Ophiostomatales in China and we have consequently explored the diversity of these fungi associated with conifer-infesting beetles and mites in Yunnan province. Galleries and beetles were collected for 17 beetle species, while 13 mite species were obtained from six of these beetle species. Collectively, 340 fungal isolates were obtained, 45 from beetles, 184 from mites, 56 from galleries and 55 isolates where the specific niche was not clear. DNA sequences for five gene regions (ITS, LSU, BT, EF, and CAL) were determined for fungal isolates representing different morphological groups. Phylogenetic analyses confirmed the presence of 19 fungal taxa, including five novel species described here as Ophiostoma acarorum sp. nov., Ophiostoma brevipilosi sp. nov., Graphilbum kesiyae sp. nov., Graphilbum puerense sp. nov., and Leptographium ningerense sp. nov. Ophiostoma ips was the most frequently isolated species, representing approximately 31% of all isolates. Six of 19 taxa were present on mites, beetles and in the galleries of the beetles, while three species were found on mites and galleries. Two species were found only on mites and one species only on a beetle. Although the numbers of beetles and mites were insufficient to provide statistical inferences, this study confirmed that mites are important vectors of the Ophiostomatales in China. We hypothesize that these mites are most likely responsible for horizontal transfer of fungal species between galleries of different beetle species. The fact that half of the fungal species found were new to science, suggests that the forests of east Asia include many undescribed Ophiostomatales yet to be discovered.

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“…Group A included G. koreana , G. yunnanense , H. pinicola and L. truncatum . The first two of these have thus far only been found in countries such as Japan, Korea, Thailand and China ( Zhou et al 2000 , Kim et al 2005a , Masuya et al 2005 , 2009 , Yamaoka et al 2007 , 2008 , Lu et al 2009a ). Hyalorhinocladiella pinicola has been recorded from Canada and Japan ( Jacobs et al 2005 ) and L. truncatum from Africa, North America, Europe and New Zealand ( Wingfield & Marasas 1983 , Hausner et al 2005 , Jacobs et al 2005 ).…”

Section: Discussionmentioning

confidence: 99%

Eight new <I>Leptographium</I> species associated with tree-infesting bark beetles in China

Paciura

Beer²,

Jacobs³

et al. 2010

Pers - Int Mycol J

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Leptographium spp. are anamorphs of Grosmannia residing in the order Ophiostomatales. These fungi are typically associated with bark-beetles and are common causal agents of sapstain in lumber and some are important tree pathogens. In this study, Leptographium spp. associated with bark beetles collected during a survey in Jilin and Yunnan provinces of China, were identified. Identifications were achieved using comparisons of morphological characters and DNA sequence data for the ITS2-partial LSU rDNA region, as well as the β-tubulin and EF-1α gene regions. Eight unknown species of Leptographium are recognised and described from conifer and hardwood hosts, associated with beetles including Ips subelongatus, Tomicus yunnanensis, Hylurgops minor, Polygraphus verrucifrons and a Pissodes sp. Six of the new species are morphologically and phylogenetically related to species known to occur in Asia such as G. yunnanense, L. bhutanense, L. bistatum and L. sinoprocerum. The remaining two taxa are related to those in a group containing G. americana and L. abietinum, found in North America. This study also provides the first report of L. pineti on Pinus kesiya in China.

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Two species of Leptographium isolated from blue-stained sapwood of Pinus khasya and bark beetles in Thailand

Cited by 7 publications

References 7 publications

Ophiostomatoid fungi isolated from Japanese red pine and their relationships with bark beetles

Ophiostomatoid fungi isolated from Japanese red pine and their relationships with bark beetles

Ophiostomatoid fungi associated with conifer-infesting beetles and their phoretic mites in Yunnan, China

Eight new <I>Leptographium</I> species associated with tree-infesting bark beetles in China

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