<i>Leptographium profanum</i>sp.nov., a new species from hardwood roots in North America

Jacobs, Karin; Eckhardt, Lori G.; Wingfield, Michael J.

doi:10.1139/b06-030

Cited by 13 publications

(7 citation statements)

References 28 publications

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“…and Melin (Lagerberg et al 1927) are commonly associated with bark beetles and weevils (Jacobs and Wingfield 2001). Most members are causal agents of blue stain of timber, having the potential to cause economic losses in the forestry industry (Jacobs et al 2006). Some important tree diseases are also known, e.g.…”

Section: Introductionmentioning

confidence: 99%

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Three new Leptographium spp. (Ophiostomatales) infecting hardwood trees in Norway and Poland

Jankowiak

Ostafińska

Aas

et al. 2018

Antonie van Leeuwenhoek

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Species of Leptographium are characterized by mononematous or synnematous conidiophores and are commonly associated with different arthropods. Some of them also produce a sexual state characterised by globose ascomata with elongated necks. Compared to investigations on coniferous trees, the occurrence of Leptographium species on hardwood trees has been poorly studied in Europe. During a survey of ophiostomatoid fungi on various hardwood tree species in Norway and Poland, three unusual species, which fit in the broader morphological description of Leptographium spp., were found in association with Trypodendron domesticum, Trypodendron signatum and Dryocoetes alni, and from wounds on a variety of hardwoods. Phylogenetic analyses of sequence data for six different loci (ITS1–5.8 S–ITS2, ITS2-LSU, ACT, β-tubulin, CAL, and TEF-1α) showed that these Leptographium species are phylogenetically closely related to the species of the Grosmannia olivacea complex. The first species forms a well-supported lineage that includes Ophiostoma brevicolle, while the two other new taxa resided in a separate lineage; possibly affiliated with Grosmannia francke-grosmanniae. All the new species produce perithecia with necks terminating in ostiolar hyphae and orange-section shaped ascospores with cucullate, gelatinous sheaths. These species also produce dark olivaceous mononematous asexual states in culture. In addition, two of the newly described species have a second type of conidiophore with a short and non-pigmented stipe. The new Leptographium species can be easily distinguished from each other by their appearance and growth in culture. Based on novel morphological characters and distinct DNA sequences, these fungi were recognised as new taxa for which the names Leptographium tardum sp. nov., Leptographium vulnerum sp. nov., and Leptographium flavum sp. nov. are provided.Electronic supplementary materialThe online version of this article (10.1007/s10482-018-1123-8) contains supplementary material, which is available to authorized users.

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Section: Introductionmentioning

confidence: 99%

“…on hardwood trees has been relatively poorly investigated in Europe. Leptographium species have previously been isolated from the roots of various hardwood trees in the southeastern United States (Jacobs et al 2006 ), and from beetles infesting hardwoods in China (Paciura et al 2010 ). In Europe, Grosmannia francke - grosmanniae (R.W.…”

Section: Introductionmentioning

confidence: 99%

Three new Leptographium spp. (Ophiostomatales) infecting hardwood trees in Norway and Poland

Jankowiak

Ostafińska

Aas

et al. 2018

Antonie van Leeuwenhoek

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“…are anamorphs of the teleomorph genus Grosmannia that resides in the Ophiostomatales ( Zipfel et al 2006 ). Grosmannia states have been identified for 33 species ( Jacobs & Kirisits 2003 , Kim et al 2005b , Masuya et al 2005 , Zipfel et al 2006 , Yamaoka et al 2008 ) and the remaining 35 species are known only based on their anamorphs ( Jacobs & Wingfield 2001 , Kim et al 2004 , Masuya et al 2004 , Lee et al 2005 , Jacobs et al 2006 , Massoumi Alamouti et al 2006 , Lu et al 2008 , Zhou et al 2008 ).…”

Section: Introductionmentioning

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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“…Leptographium bhutanense is most similar to L. procerum ( Wingfield 1985 , Jacobs & Wingfield 2001 ) and L. profanum ( Jacobs et al 2006 ). However, it can be distinguished from these species based on morphology and DNA sequence comparisons.…”

Section: Discussionmentioning

confidence: 99%

“…The ecology of L. bhutanense is different from that of L. profanum . The latter species was isolated from hardwood roots in the USA and it is not known to be associated with an insect vector ( Jacobs et al 2006 ). In contrast, L. bhutanense is associated with H. chenkupdorjii infesting the roots and root collar zone of young conifers in Bhutan.…”

Section: Discussionmentioning

confidence: 99%

Leptographium bhutanense sp. nov., associated with the root collar weevil Hylobitelus chenkupdorjii on Pinus wallichiana in Bhutan

Zhou

Jacobs²,

Kirisits³

et al. 2008

persoonia

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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 distinct from L. procerum and L. profanum. DNA sequence comparisons revealed that the isolates from Bhutan resided in a distinct well-supported clade and confirmed that they represent an undescribed taxon for which the name Leptographium bhutanense sp. nov. is provided.

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Leptographium profanumsp.nov., a new species from hardwood roots in North America

Cited by 13 publications

References 28 publications

Three new Leptographium spp. (Ophiostomatales) infecting hardwood trees in Norway and Poland

Three new Leptographium spp. (Ophiostomatales) infecting hardwood trees in Norway and Poland

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

Leptographium bhutanense sp. nov., associated with the root collar weevil Hylobitelus chenkupdorjii on Pinus wallichiana in Bhutan

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