Bretziella, a new genus to accommodate the oak wilt fungus, Ceratocystis fagacearum (Microascales, Ascomycota)

Beer, Z. Wilhelm de; Marincowitz, Seonju; Duong, Tuan A.; Wingfield, Michael J.

doi:10.3897/mycokeys.27.20657

Cited by 44 publications

(24 citation statements)

References 33 publications

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“…resinifera a species that used to be assigned to the genus Ceratocystis . The latter is a genus that has recently undergone extensive taxonomic revisions 71 and the mitochondrial genome might offer mtDNA loci that could be developed into molecular markers assisting in the identification of taxa within this group of economically important fungi. Large mitochondrial genomes offer some insight on mechanisms that might cause these genomes to expand.…”

Section: Discussionmentioning

confidence: 99%

The mitochondrial genome of Endoconidiophora resinifera is intron rich

Zubaer

Wai

Hausner

2018

Sci Rep

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Endoconidiophora resinifera (=Ceratocystis resinifera) is a blue-stain fungus that occurs on conifers. The data showed that the Endoconidiophora resinifera mitochondrial genome is one of the largest mitochondrial genomes (>220 kb) so far reported among members of the Ascomycota. An exceptional large number of introns (81) were noted and differences among the four strains were restricted to minor variations in intron numbers and a few indels and single nucleotide polymorphisms. The major differences among the four strains examined are due to size polymorphisms generated by the absence or presence of mitochondrial introns. Also, these mitochondrial genomes encode the largest cytochrome oxidase subunit 1 gene (47.5 kb) reported so far among the fungi. The large size for this gene again can be attributed to the large number of intron insertions. This study reports the first mitochondrial genome for the genus Endoconidiophora, previously members of this genus were assigned to Ceratocystis. The latter genus has recently undergone extensive taxonomic revisions and the mitochondrial genome might provide loci that could be applied as molecular markers assisting in the identification of taxa within this group of economically important fungi. The large mitochondrial genome also may provide some insight on mechanisms that can lead to mitochondrial genome expansion.

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Section: Discussionmentioning

confidence: 99%

The mitochondrial genome of Endoconidiophora resinifera is intron rich

Zubaer

Wai

Hausner

2018

Sci Rep

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“…Climate estimates were obtained at each occurrence location by interrogating North American climate models (described in McKenney et al 19 ) of the 1981-2010 normal period for the following four variables: (1) fall (i.e., September-December) precipitation (FALLPCP); (2) average spring (i.e., March-June) temperature (SPRINGTMP); (3) annual climate moisture index (CMI; a climate-based moisture balance variable; see Hogg 20 for details); and (4) Average Minimum Temperature of the Coldest Month (MINTCM). These climate variables were selected based on their reported influences on B. fagacearum (FALLPCP and CMI 21,22 ) C. sayi and C. truncatus (SPRINGTMP 10 ), and insect distributions in general (MINTCM 23 ).…”

Section: Species Distribution Modellingmentioning

confidence: 99%

“…Oak wilt, caused by the fungal pathogen Bretziella fagacearum (formerly Ceratocystis fagacearum ) 1 , is a significant disease of oaks ( Quercus spp.) in the United States 2 , and a growing concern to Canadian regulators of plant and forest health 3 .…”

Section: Introductionmentioning

confidence: 99%

Assessing the climate suitability and potential economic impacts of Oak wilt in Canada

Pedlar

McKenney

Hope

et al. 2020

Sci Rep

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We assess risks posed by oak wilt—a disease caused by the fungal pathogen Bretziella fagacearum. Though not currently found in Canada, our distribution models indicate that suitable climate conditions currently occur in southern Ontario for B. fagacearum and two of its main insect dispersal vectors, Colopterus truncatus and Carpophilus sayi. Climate habitat for these species is projected to expand northward under climate change, with much of the oak range in eastern Canada becoming climatically suitable within the next two decades. Potential costs for the removal and replacement of oak street trees ranged from CDN$266 to $420 million, with variation related to uncertainty in costs, rate of tree replacement, and city-level estimates of oak street tree density. The value of standing oak timber in eastern Canada was estimated at CDN$126 million using provincial stumpage fees and as a CDN$24 million annual contribution to national Gross Domestic Product (GDP) when calculated using a combination of economic and forestry product statistics. These values can help inform the scale of eradication and/or management efforts in the event of future oak wilt introductions.

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“…The Ascomycete genus Ceratocystis ( Sordariomycetes , Hypocreomycetidae , Microascales ) is one of 11 clearly defined genera in the Ceratocystidaceae ( De Beer et al 2014 , 2017 , Mayers et al 2015 , Nel et al 2017 ). Ceratocystis , as currently recognized, includes 36 species ( Marin-Felix et al 2017 , Liu et al 2018 ) that are characterized by their mostly black, globose ascomatal bases with long, elongated necks terminating in an ostiole, through which sticky hat-shaped ascospores exude ( Upadhyay 1981 , Seifert et al 1993 ).…”

Section: Introductionmentioning

confidence: 99%

New Ceratocystis species associated with rapid death of Metrosideros polymorpha in Hawai`i

et al. 2018

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The native ‘ōhi’a lehua (Metrosideros polymorpha) has cultural, biological and ecological significance to Hawai’i, but it is seriously threatened by a disease commonly referred to as rapid ‘ōhi’a death (ROD). Preliminary investigations showed that a Ceratocystis species similar to C. fimbriata s.lat. was the cause of the disease. In this study, we used a combination of the phylogenetic, morphological and biological species concepts, as well as pathogenicity tests and microsatellite analyses, to characterise isolates collected from diseased ‘ōhi’a trees across Hawai’i Island. Two distinct lineages, representing new species of Ceratocystis, were evident based on multigene phylogenetic analyses. These are described here as C. lukuohia and C. huliohia. Ceratocystis lukuohia forms part of the Latin American clade (LAC) and was most closely associated with isolates from Syngonium and Xanthosoma from the Caribbean and elsewhere, including Hawai’i, and C. platani, which is native to eastern USA. Ceratocystis huliohia resides in the Asian-Australian clade (AAC) and is most closely related to C. uchidae, C. changhui and C. cercfabiensis, which are thought to be native to Asia. Morphology and interfertility tests support the delineation of these two new species and pathogenicity tests show that both species are aggressive pathogens on seedlings of M. polymorpha. Characterisation of isolates using microsatellite markers suggest that both species are clonal and likely represent recently-introduced strains. Intensive research is underway to develop rapid screening protocols for early detection of the pathogens and management strategies in an attempt to prevent the spread of the pathogens to the other islands of Hawai’i, which are currently disease free.

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Bretziella, a new genus to accommodate the oak wilt fungus, Ceratocystis fagacearum (Microascales, Ascomycota)

Cited by 44 publications

References 33 publications

The mitochondrial genome of Endoconidiophora resinifera is intron rich

The mitochondrial genome of Endoconidiophora resinifera is intron rich

Assessing the climate suitability and potential economic impacts of Oak wilt in Canada

New Ceratocystis species associated with rapid death of Metrosideros polymorpha in Hawai`i

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