Three new species of Ophiostomatales from Nothofagus in Patagonia

Errasti, Andrés de; Beer, Z. Wilhelm de; Coetzee, Martin Petrus Albertus; Roux, Jolanda; Rajchenberg, Mario; Wingfield, Michael J.

doi:10.1007/s11557-016-1158-z

Cited by 15 publications

(15 citation statements)

References 31 publications

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“…This result demonstrates that wounds on hardwood trees in Europe are suitable habitats for the Ophiostomatales. This finding was previously documented from some angiosperms in South Africa (Kamgan Nkuekam et al , , ; Musvuugwa et al , ; Osorio et al , ), Australia (Kamgan Nkuekam et al , ) and South America (Geldenhuis et al , ; De Errasti et al , ). In contrast, one European study showed a relatively low diversity of Ophiostoma spp.…”

Section: Discussionsupporting

confidence: 79%

“…Plant Pathology (2019) 68, 1407-1424 Errasti et al, 2016). In contrast, one European study showed a relatively low diversity of Ophiostoma spp.…”

Section: Discussionmentioning

confidence: 99%

“…Previously, a study conducted in Norway discovered three Ophiostoma species from hardwood wounds, including Ophiostoma borealis which was described as a new species (Kamgan Nkuekam et al , ). Studies in other parts of the world have also provided evidence that wounds on hardwoods provide habitat for a large diversity of species that belong to the Ophiostomatales (Geldenhuis et al , ; Kamgan Nkuekam et al , , , ; Musvuugwa et al , ; De Errasti et al , ; Osorio et al , ).…”

Section: Introductionmentioning

confidence: 99%

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Ophiostomatales associated with wounds on hardwood trees in Poland

et al. 2019

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Wounds on trees provide entrance for many members of the Ophiostomatales (Ascomycota), including economically damaging tree pathogens. Because very little is known regarding wound‐associated fungi on hardwoods in Europe or their potential nitidulid beetle vectors (Coleoptera), the aim of this survey was to explore the diversity of these fungi in Poland. Wound samples associated with 26 tree species were collected from 18 stands in Poland. Fungi belonging to the Ophiostomatales were isolated and identified based on morphology and DNA sequence comparisons of five gene regions, combined with phylogenetic analyses. In total, 32 taxa were identified, including 20 known and 12 currently undescribed species. In addition, Grosmannia cainii, Ophiostoma cf. ponderosae, O. sparsiannulatum and Sporothrix aurorae were reported for the first time outside of the USA. The wound‐associated members of the Ophiostomatales recovered from hardwoods showed high diversity and specificity. Among the species recovered, 16 belonged to Sporothrix, 11 represented Ophiostoma s. l., five could be assigned to Leptographium s. l., and one Graphilbum species was detected. Among the studied tree species, wounds on Quercus robur appeared to be the most vulnerable to infection by members of the Ophiostomatales. All the nitidulid beetle species were found in association with species assignable to Ophiostoma and Sporothrix. This study detected a significant association between the occurrence of species belonging to the Ophiostomatales and the health status of the wounded trees. Some of the isolated species were host specific although Ophiostoma quercus, the most frequently encountered species, had a broad host range.

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Section: Discussionsupporting

confidence: 79%

“…Plant Pathology (2019) 68, 1407-1424 Errasti et al, 2016). In contrast, one European study showed a relatively low diversity of Ophiostoma spp.…”

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Ophiostomatales associated with wounds on hardwood trees in Poland

et al. 2019

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“…Most species in the complex are characterized by long ascomatal necks that often, but not always, produce irregular numbers of annuli (Zanzot et al 2010;. To date only ITS and BT data have been used to delineate species in the complex (Zanzot et al 2010;De Errasti et al 2016). Based on these studies and our analyses, it is clear that the complex includes several undescribed taxa, some of which have been inappropriately referred to as 'O.…”

Section: Discussionmentioning

confidence: 85%

“…Some species have been isolated from conifer hosts, such as O. multiannulatum from pines in the USA (Davidson 1935), 'Ophiostoma sp. E' from pines in Canada, New Zealand and Spain (Thwaites et al 2005, Villareal et al 2005, and O. novae-zelandiae from Podocarpus in New Zealand (Hutchison and Reid 1988;De Errasti et al 2016 Errasti et al 2016). None of these species have been associated with tree disease.…”

Section: Discussionmentioning

confidence: 99%

Ophiostomatoid fungi associated with mangroves in South Africa, including Ophiostoma palustre sp. nov.

Osorio

Beer

Wingfield

et al. 2016

Antonie van Leeuwenhoek

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Mangrove trees are continuously under stress due to environmental and/or anthropogenic pressures, which expose them to attack by pathogens, compromising their survival.Ophiostomatoid fungi cause sap stain and diseases of a wide spectrum of tree species globally. These fungi infect trees through natural, insect, animal and/or human made wounds.During routine surveys of mangrove trees in South Africa, wounds on branches and stems of Avicennia marina were regularly monitored for the presence of ophiostomatoid fungi at ten study sites in the country. The stems of four mangrove species, Avicennia marina, Bruguiera gymnorrhiza, Rhizophora mucronata and Barringtonia racemosa were also wounded and evaluated for the appearance of these fungi. Ophiostomatoid fungi were obtained from the mangrove associate B. racemosa, but not from any of the true mangroves. Analyses of DNA sequence data for the Internal Transcribed Spacer (ITS), β-tubulin (BT), Calmodulin (CAL) and Translation Elongation Factor (TEF) gene regions revealed that the fungi isolated from the wounds on B. racemosa belong to three species in the Ophiostomataceae, including a new taxon described here as Ophiostoma palustre sp. nov. Results suggest that the mangrove associate B. racemosa is more prone to colonization by ophiostomatoid fungi than the true mangroves.

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Two new Leptographium spp. reveal an emerging complex of hardwood-infecting species in the Ophiostomatales

Jankowiak

Strzałka

Bilański

et al. 2017

Antonie van Leeuwenhoek

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Species of Leptographium are generally characterized by mononematous conidiophores and are commonly associated with bark beetles and weevils. These species are responsible for sapstain and in some cases serious diseases on a range of primarily coniferous trees. In comparison with coniferous trees, the occurrence of Leptographium species on hardwood trees has been poorly studied in Europe. During a survey of ophiostomatoid fungi on various tree species in Norway and Poland, three unusual species, which fit the broader morphological description of Leptographium spp., were found in association with Scolytus ratzeburgi, Dryocoetes alni and Trypodendron domesticum on a variety of hardwoods, and from wounds on Tilia cordata. Phylogenetic analyses of sequence data for three gene regions (ITS2-LSU, β-tubulin, and TEF1-α) showed that these Leptographium species are phylogenetically closely related to each other and form a well-supported lineage that included Grosmannia grandifoliae and Leptographium pruni. The first species could be distinguished from the other Leptographium species based on conidiophores arising from spiral hyphae, chlamydospore-like structures and a hyalorhinocladiella-like synanamorph in culture. The second species differs from the previous one by having distinctly shorter conidiophores and smaller conidia. This species also produces a well-developed sporothrix-like synanamorph with denticulate conidiogenous cells. Based on these unusual morphological characteristics and distinct DNA sequences, these fungi were recognised as new taxa for which the names Leptographium trypodendri sp. nov. and L. betulae sp. nov. are provided. The third group of isolates belonged to Grosmannia grandifoliae, representing the first report of this species outside of the USA. The newly defined G. grandifoliae complex is the first species complex in Leptographium s.l. consisting of only hardwood-infecting species.

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Three new species of Ophiostomatales from Nothofagus in Patagonia

Cited by 15 publications

References 31 publications

Ophiostomatales associated with wounds on hardwood trees in Poland

Ophiostomatales associated with wounds on hardwood trees in Poland

Ophiostomatoid fungi associated with mangroves in South Africa, including Ophiostoma palustre sp. nov.

Two new Leptographium spp. reveal an emerging complex of hardwood-infecting species in the Ophiostomatales

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