Twenty-four years of Dutch Trig® application to control Dutch elm disease

Postma, J.; Geijn, Helen Goossen-van de

doi:10.1007/s10526-016-9731-6

Cited by 33 publications

(20 citation statements)

References 12 publications

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“…Many studies support the hypothesis that fungal endophytes may enhance the tolerance of the host tree to fungal pathogens [e.g. 2, [59][60][61][62][63][64][65][66][67][68]. Those ndings are extremely important, as in future, there might be a possibility to favor the use of bene cial endophytes that can act as biocontrol agents against pathogens and in this case against S. sapinea.…”

Section: Introductionmentioning

confidence: 79%

The Opportunistic Pathogen Sphaeropsis Sapinea is Found to be one of the Most Abundant Fungi in Symptomless and Diseased Scots Pine in Central-Europe

Blumenstein¹,

Langer²,

Bußkamp³

et al. 2020

Preprint

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Background: The opportunistic and latent pathogen Sphaeropsis sapinea is one of the most important forest pathogens on pine. The fungus may cause Diplodia tip blight on several coniferous trees and disease symptoms come visible when trees are weakened by stress, usually related to injuries and drought. This project compares the mycobiome of healthy and diseased Scots pines. Twigs were sampled in June and September 2018 in a German forest stand with varying health status of the sampled Scots pines. Growth of 2017 and 2018 were sampled and cultivable, filamentous fungi isolated and the mycobiome was analysed by high-throughput sequencing (HTS) of the internal transcribed spacer 2 (ITS2) region. Results: A PERMANOVA analysis confirmed that the mycobiome community composition significantly differed between growth years (p < 0.001) and sampling time (p < 0.001) but not between healthy and diseased trees. Higher amount of S. sapinea was observed in June and the growth year 2017. Besides yeasts which were neglected, 23 ascomyceteous fungal endophytes were isolated. S. sapinea was the most common endophyte isolated and the second common in HTS data. It was highly abundant in symptomless (healthy) trees. Conclusion: Results highlights the ability of S. sapinea to accumulate unnoticed before disease outbreaks, implementing the sudden threat for Scots pines in the future.

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Section: Introductionmentioning

confidence: 79%

The Opportunistic Pathogen Sphaeropsis Sapinea is Found to be one of the Most Abundant Fungi in Symptomless and Diseased Scots Pine in Central-Europe

Blumenstein¹,

Langer²,

Bußkamp³

et al. 2020

Preprint

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“…Through the induction of plant defense response in the host's metabolism, infections of pathogens or herbivors [269] can be prevented by a persistent form of resistance [204]. Since 1992, the commercial biocontrol product Dutch Trig ® (Apeldoorn, The Netherlands) has been used to protect elm trees from infection [270] by the blue stain fungus O. novo-ulmi causing Dutch elm disease (DED). The product consists of a conidiospore suspension of the endophytic fungus Verticillium albo-atrum strain WCS850 (Dutch Trig, Apeldoorn, The Netherlands).…”

Section: Prospects For Translational Applications Of the Knowledge Fomentioning

confidence: 99%

Forest Tree Microbiomes and Associated Fungal Endophytes: Functional Roles and Impact on Forest Health

Terhonen

Blumenstein

Kovalchuk

et al. 2019

Forests

172

113

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Terrestrial plants including forest trees are generally known to live in close association with microbial organisms. The inherent features of this close association can be commensalism, parasitism or mutualism. The term “microbiota” has been used to describe this ecological community of plant-associated pathogenic, mutualistic, endophytic and commensal microorganisms. Many of these microbiota inhabiting forest trees could have a potential impact on the health of, and disease progression in, forest biomes. Comparatively, studies on forest tree microbiomes and their roles in mutualism and disease lag far behind parallel work on crop and human microbiome projects. Very recently, our understanding of plant and tree microbiomes has been enriched due to novel technological advances using metabarcoding, metagenomics, metatranscriptomics and metaproteomics approaches. In addition, the availability of massive DNA databases (e.g., NCBI (USA), EMBL (Europe), DDBJ (Japan), UNITE (Estonia)) as well as powerful computational and bioinformatics tools has helped to facilitate data mining by researchers across diverse disciplines. Available data demonstrate that plant phyllosphere bacterial communities are dominated by members of only a few phyla (Proteobacteria, Actinobacteria, Bacteroidetes). In bulk forest soil, the dominant fungal group is Basidiomycota, whereas Ascomycota is the most prevalent group within plant tissues. The current challenge, however, is how to harness and link the acquired knowledge on microbiomes for translational forest management. Among tree-associated microorganisms, endophytic fungal biota are attracting a lot of attention for their beneficial health- and growth-promoting effects, and were preferentially discussed in this review.

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“…Additional prominent examples of biological control of tree pathogenic ascomycetes are the application of V. albo-atrum for the control of Dutch elm disease caused by O. ulmi and O. novo-ulmi (Scheffer et al, 2008 ; Postma and Goossen-van de Geijn, 2016 ), the exploitation of the hypovirulence phenomenon in the case of a dsRNA mycovirus-harboring strain of C. parasitica against chestnut blight (Milgroom and Cortesi, 2004 ) or the possibility of using fungi ( Trichoderma species) or bacteria ( P. fluorescens, Bacillus subtilis ) for the control of avocado white root rot caused by R. necatrix (Sztejnberg et al, 1987 ; Cazorla et al, 2006 , 2007 ; Ruano-Rosa and López Herrera, 2009 ).…”

Section: Harnessing Beneficial Components Of Belowground Microbiota Tmentioning

confidence: 99%

Belowground Microbiota and the Health of Tree Crops

et al. 2018

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Trees are crucial for sustaining life on our planet. Forests and land devoted to tree crops do not only supply essential edible products to humans and animals, but also additional goods such as paper or wood. They also prevent soil erosion, support microbial, animal, and plant biodiversity, play key roles in nutrient and water cycling processes, and mitigate the effects of climate change acting as carbon dioxide sinks. Hence, the health of forests and tree cropping systems is of particular significance. In particular, soil/rhizosphere/root-associated microbial communities (known as microbiota) are decisive to sustain the fitness, development, and productivity of trees. These benefits rely on processes aiming to enhance nutrient assimilation efficiency (plant growth promotion) and/or to protect against a number of (a)biotic constraints. Moreover, specific members of the microbial communities associated with perennial tree crops interact with soil invertebrate food webs, underpinning many density regulation mechanisms. This review discusses belowground microbiota interactions influencing the growth of tree crops. The study of tree-(micro)organism interactions taking place at the belowground level is crucial to understand how they contribute to processes like carbon sequestration, regulation of ecosystem functioning, and nutrient cycling. A comprehensive understanding of the relationship between roots and their associate microbiota can also facilitate the design of novel sustainable approaches for the benefit of these relevant agro-ecosystems. Here, we summarize the methodological approaches to unravel the composition and function of belowground microbiota, the factors influencing their interaction with tree crops, their benefits and harms, with a focus on representative examples of Biological Control Agents (BCA) used against relevant biotic constraints of tree crops. Finally, we add some concluding remarks and suggest future perspectives concerning the microbiota-assisted management strategies to sustain tree crops.

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Twenty-four years of Dutch Trig® application to control Dutch elm disease

Cited by 33 publications

References 12 publications

The Opportunistic Pathogen Sphaeropsis Sapinea is Found to be one of the Most Abundant Fungi in Symptomless and Diseased Scots Pine in Central-Europe

The Opportunistic Pathogen Sphaeropsis Sapinea is Found to be one of the Most Abundant Fungi in Symptomless and Diseased Scots Pine in Central-Europe

Forest Tree Microbiomes and Associated Fungal Endophytes: Functional Roles and Impact on Forest Health

Belowground Microbiota and the Health of Tree Crops

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