A molecular phylogenetic reappraisal of the &lt;I&gt;Graphium&lt;/I&gt; complex based on 18S rDNA sequences

Okada, Gen; Seifert, Keith A.; Takematsu, Akiko; Yamaoka, Yuichi; Miyazaki, Satoru; Tubaki, K.

doi:10.1139/cjb-76-9-1495

Cited by 31 publications

(32 citation statements)

References 38 publications

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“…The Pesotum and Sporothrix synanamorphs of O. quercus had never been supplied with binary names, while those of O. roboris were described as Graphium roboris and Hyalodendron roboris, respectively. However, neither of the latter genera are available for anamorphs of Ophiostoma ( de Hoog 1979;Okada et al 1998). Furthermore, Article 59 of the ICBN (McNeill et al 2006) allows the epithets of these two form species to be available for the anamorphs of O. quercus.…”

Section: Discussionmentioning

confidence: 99%

“…However, Morelet (1992) and Okada et al (1998) treated O. catonianum as a synonym of O. quercus because the species was described from Pyrus, a hardwood host (Goidánich 1935). The authentic isolate (CMW 11535) from the original study included in the present study consistently grouped in a lineage distinct from O. quercus in all four gene regions analyzed, and it clearly represents a distinct species.…”

Section: Discussionmentioning

confidence: 99%

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Delimitation of Ophiostoma quercus and its synonyms using multiple gene phylogenies

et al. 2009

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Ophiostoma quercus is a morphologically variable species that causes sapstain on mostly hardwood hosts worldwide. Several species have been suggested as synonyms of O. quercus in the past, including O. fagi, O. roboris, O. valachicum, O. kubanicum, and O. catonianum. A recent collection of isolates resembling O. quercus from Azerbaijan provided the opportunity to reconsider the accuracy of these synonymies based on morphology and DNA sequence data. Four gene regions, the ribosomal internal transcribed spacer regions including the 5.8 s gene, part of the β-tubulin gene, translation elongation factor-1α, and histone gene, were used to determine the phylogenetic relationships between the various species and isolates of different origin. In all four resulting phylogenetic trees, isolates of O. quercus, O. fagi, and O. roboris formed a single, well-supported cluster, but with some internal variation. All the other species in the analyses, including O. piceae and O. catonianum, grouped distinctly with good node support. These results thus support the synonymy of O. fagi and O. roboris with O. quercus, and confirm that O. piceae and O. catonianum are distinct taxa. Ophiostoma valachicum and O. kubanicum could not be considered due to the absence of cultures, but based on published descriptions, we argue that O. valachicum should be regarded as a valid species in need of neotypification. Ophiostoma kubanicum was never validly described and should be excluded from the list of synonyms of O. quercus.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Delimitation of Ophiostoma quercus and its synonyms using multiple gene phylogenies

et al. 2009

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“…Pesotum pini was first described in New Zealand on Pinus radiata and P. taeda as associate with bark beetle galleries (Hutchison and Reid 1988;Okada et al 1998). Recently, its teleomorph, O. radiaticola, was found in mating studies between the strains originating from New Zealand and from Korea in New Zealand-exported P. radiata logs (Kim et al 2005c).…”

Section: Plotmentioning

confidence: 99%

Ophiostomatoid fungi (Ascomycota) associated with Pinus tabuliformis infested by Dendroctonus valens (Coleoptera) in northern China and an assessment of their pathogenicity on mature trees

Lü

Decock

Zhang

et al. 2009

Antonie van Leeuwenhoek

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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.

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“…Pesotum spp. reported in this study, group within the larger O. piceae complex, which is a group of morphologically similar species difficult to identify and that have been the subject of considerable taxonomic confusion (Przybyl and De Hoog 1989;Okada et al 1998;Harrington et al 2001). P. australi is phylogenetically most closely related to O. quercus.…”

Section: Taxonomymentioning

confidence: 67%

“…However, its taxonomic placement in Ophiostoma has been the source of considerable debate. Okada et al (1998) treated Pesotum to include all synnematal anamorphs with affinities to Ophiostoma. In a more recent treatment based on DNA sequence comparison, Harrington et al (2001) recommended that Pesotum should be restricted only to anamorphs of the O. piceae (Münch) Syd.…”

Section: Introductionmentioning

confidence: 99%

Pesotum australisp. nov. andOphiostoma quercusassociated withAcacia mearnsiitrees in Australia and Uganda, respectively

Nkuekam

Jacobs

Beer

et al. 2008

Austral. Plant Pathol.

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Abstract. Pesotum accommodates synnematal anamorphs of Ophiostoma spp. with sympodially proliferating conidiogenous cells. These fungi are usually closely associated with wounds on trees and the insects that visit them. During tree disease surveys in Uganda, as well as studies of fungi infecting wounds on Acacia mearnsii trees in Uganda and Australia, many isolates resembling species of Pesotum were collected. The aim of this study was to identify these fungi using both morphological and DNA sequence comparisons. The Pesotum, anamorph of O. quercus was the only species collected from multiple collections in Uganda. Collections from Australia represent a new species of Pesotum described here as P. australi sp. nov.

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A molecular phylogenetic reappraisal of the <I>Graphium</I> complex based on 18S rDNA sequences

Cited by 31 publications

References 38 publications

Delimitation of Ophiostoma quercus and its synonyms using multiple gene phylogenies

Delimitation of Ophiostoma quercus and its synonyms using multiple gene phylogenies

Ophiostomatoid fungi (Ascomycota) associated with Pinus tabuliformis infested by Dendroctonus valens (Coleoptera) in northern China and an assessment of their pathogenicity on mature trees

Pesotum australisp. nov. andOphiostoma quercusassociated withAcacia mearnsiitrees in Australia and Uganda, respectively

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