Diversity of ophiostomatoid fungi associated with the large pine weevil, Hylobius abietis, and infested Scots pine seedlings in Poland

Jankowiak, Robert; Bilański, Piotr

doi:10.1007/s13595-013-0266-z

Cited by 29 publications

(22 citation statements)

References 57 publications

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“…This study confirmed an earlier finding (Linnakoski et al. ; Jankowiak and Bilański ) that G. radiaticola is widely distributed on the European continent, especially in association with root‐feeding bark beetles. Leptographium procerum , L. lundbergii and L. truncatum were also isolated at relatively high frequencies from root‐infesting beetles in this study, and these fungi have been associated with a wide range of bark beetles in Europe (Kirisits ; Linnakoski et al.…”

Section: Discussionsupporting

confidence: 92%

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Ophiostomatoid fungi associated with root‐feeding bark beetles onScots pine inPoland

Jankowiak

Bilański

2013

Forest Pathology

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Ophiostomatoid fungi are known to be associated with various species of bark beetles. However, information about fungal associates of root-feeding bark beetles in Europe is still fragmentary. For this reason, the fungal associates of Hylastes ater, H. opacus and Hylurgus ligniperda on Pinus sylvestris were isolated and identified. A total of 743 fungal isolates were collected and separated into 10 morphological groups. Analyses of ITS rDNA and partial b-tubulin gene sequences confirmed that these groups represented distinct species. The 10 species included a total of 13 associations between fungi and bark beetles that had not been recorded previously. All of the bark beetles examined were frequently associated with ophiostomatoid fungi. The fungal diversity and relative abundance of species were very similar in the three species of root-feeding bark beetles. The most commonly encountered associates of these beetles were Grosmannia radiaticola, Leptographium lundbergii, L. procerum and L. truncatum. Insect infestation data furthermore suggest that Hylastes spp. and Hg. ligniperda are also important vectors of the fungal pathogen Sphaeropsis sapinea.

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Section: Discussionsupporting

confidence: 92%

“…). The presence of G. radiaticola in Europe has also been recently recorded in association with H. abietis in Poland (Jankowiak and Bilański ). This study confirmed an earlier finding (Linnakoski et al.…”

Section: Discussionmentioning

confidence: 74%

Ophiostomatoid fungi associated with root‐feeding bark beetles onScots pine inPoland

Jankowiak

Bilański

2013

Forest Pathology

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“…Spread of the fungus may be aided further by adults being able to recognize trees that have been treated with insecticides and moving onto other trees after initial feeding, thus increasing encounter rates (Rose et al , ). Many insects facilitate the dissemination and infection of pathogenic fungi (Lévieux et al , ; Whitehill et al , ; Jankowiak & Bilański, , ), particularly via wounds on host plants (Palmer, ; Feci et al , ). Some insects have previously been associated with the transfer of D. sapinea , such as bark beetles ( Ips spp.)…”

Section: Discussionmentioning

confidence: 99%

The large pine weevil Hylobius abietis (L.) as a potential vector of the pathogenic fungus Diplodia sapinea (Fr.) Fuckel

Drenkhan

Voolma

Adamson

et al. 2016

Agri and Forest Entomology

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1 Diplodia sapinea, an important pathogen of various conifer species, was recently recorded in the northern Baltic region. The pathogen can disperse over short distances via rain or wind, whereas long range dispersal occurs via movement of contaminated plant material and seeds by humans, as well as by insects.2 Hylobius abietis is one of the most important forest pests over large areas of Europe.Adult weevils feed on the bark of seedlings of young conifers, causing injury and often death. 3 Weevils were collected from fresh clear-cut areas and near the symptomatic conifer stands to analyze the presence of D. sapinea. Entire weevils collected from natural environments were crushed without surface washing. 4 The identity of D. sapinea and the fungal DNA extraction from the insects was confirmed by species-specific polymerase chain reaction priming. Eight H. abietis individuals were determined to be infected with D. sapinea. In a laboratory experiment, pine branches were infected with D. sapinea and were fed to adult H. abietis. 5 The results show that the pathogen survived in the digestive tract of H. abietis in the laboratory experiment, and also that the isolation of fungus from the faeces was successful. In addition, the results demonstrate that the large pine weevil may be a potential vector of pathogenic fungus D. sapinea.

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“…Pine weevils of the genus Pissodes are important pests on young pines in the Northeast zone, being widely distributed in the Baltic countries, Poland, Ukraine, Russia, and Finland. The most common species are P. castaneus, P. pini, and P. piniphilus [94,166,174]. Pissodes castaneus is one of the most dangerous pests of P. sylvestris plantations and natural regenerations in the Baltic region.…”

Section: Northeast Agro-climatic Zonementioning

confidence: 99%

“…Nannf. to P. sylvestris seedlings [174]. Its abundance, frequency as a damaging agent on pines, and recurrent association with pathogenic fungi increase the risk of it becoming associated with F. circinatum.…”

Section: Northeast Agro-climatic Zonementioning

confidence: 99%

Pine Pitch Canker and Insects: Regional Risks, Environmental Regulation, and Practical Management Options

Fernández

Naves

Musolin

et al. 2019

Forests

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Pine pitch canker (PPC), caused by the pathogenic fungus Fusarium circinatum (Nirenberg and O' Donnell), is a serious threat to pine forests globally. The recent introduction of the pathogen 2 of 34 to Southern Europe and its spread in Mediterranean region is alarming considering the immense ecological and economic importance of pines in the region. Pines in forests and nurseries can be infected, resulting in severe growth losses and mortality. The pathogen is known to spread in plants for planting and in seeds, and results from recent studies have indicated that F. circinatum may also spread through phoretic associations with certain insects. With this review, we aim to expand the current understanding of the risk of insect-mediated spread of PPC in different parts of Europe. Through the joint action of a multinational researcher team, we collate the existing information about the insect species spectrum in different biogeographic conditions and scrutinize the potential of these insects to transmit F. circinatum spores in forests and nurseries. We also discuss the impact of environmental factors and forest management in this context. We present evidence for the existence of a high diversity of insects with potential to weaken pines and disseminate PPC in Europe, including several common beetle species. In many parts of Europe, temperatures are projected to rise, which may promote the activity of several insect species, supporting multivoltinism and thus, further amplifying the risk of insect-mediated dissemination of PPC. Integrated pest management (IPM) solutions that comply with forest management practices need to be developed to reduce this risk. We recommend careful monitoring of insect populations as the basis for successful IPM. Improved understanding of environmental control of the interaction between insects, the pathogen, and host trees is needed in order to support development of bio-rational strategies to safeguard European pine trees and forests against F. circinatum in future.

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Diversity of ophiostomatoid fungi associated with the large pine weevil, Hylobius abietis, and infested Scots pine seedlings in Poland

Abstract: International audienc

Cited by 29 publications

References 57 publications

Ophiostomatoid fungi associated with root‐feeding bark beetles onScots pine inPoland

Ophiostomatoid fungi associated with root‐feeding bark beetles onScots pine inPoland

The large pine weevil Hylobius abietis (L.) as a potential vector of the pathogenic fungus Diplodia sapinea (Fr.) Fuckel

Pine Pitch Canker and Insects: Regional Risks, Environmental Regulation, and Practical Management Options

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