Endophytes and Forest Health

Witzell, Johanna; Martín, Juan A.

doi:10.1007/978-3-319-89833-9_12

Cited by 25 publications

(32 citation statements)

References 124 publications

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“…Forest management practices consist mainly of the expensive eradication of infected or dead trees after a disease outbreak has been identified and damages in the forest have occurred. In some cases, chemical pesticides which do not differentiate between beneficial and harmful organisms are applied [259], which may negatively affect the forest area long-term. The silvicultural approach of changing the tree species or genotypes in the diseased forest area is also commonly practiced [260].…”

Section: Prospects For Translational Applications Of the Knowledge Fomentioning

confidence: 99%

“…Witzell and Martín [259] indicated that an ecosystem-based approach to enhance forest health requires the principles of integrated pest management strategies that take into consideration the ecological elements of forest systems. This approach includes intra-and intercellular endophytic fungi, which are known to function as biological control agents [67,261] through various mechanisms.…”

Section: Prospects For Translational Applications Of the Knowledge Fomentioning

confidence: 99%

“…The listed examples describe varieties for which the internal endophyte community is influenced by the inoculation of trees to enhance the host tree health status. Witzell and Martín [259] outlined two active manipulation application measures to engineer endophyte communities at the forest stand level: (a) at clear-cut level, where soil amendment with beneficial endophytes is possible and (b) at regeneration level, where the pre-planting inoculation of plants or seeds with beneficial endophytes could take place. Passive manipulation can be done through the promotion of natural spore sources, such as young, mature and old growth forest that provide substrates for diverse fungi.…”

Section: Prospects For Translational Applications Of the Knowledge Fomentioning

confidence: 99%

See 2 more Smart Citations

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

Terhonen

Blumenstein

Kovalchuk

et al. 2019

Forests

165

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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Section: Prospects For Translational Applications Of the Knowledge Fomentioning

confidence: 99%

Section: Prospects For Translational Applications Of the Knowledge Fomentioning

confidence: 99%

Section: Prospects For Translational Applications Of the Knowledge Fomentioning

confidence: 99%

See 1 more Smart Citation

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

Terhonen

Blumenstein

Kovalchuk

et al. 2019

Forests

165

113

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“…As potent pioneer decomposers in senescing tissues (Müller et al 2001) and as protective agents (Miller et al 2008;Martín et al 2013), these organisms may be functionally important not only for tree growth and health, but also in central processes such as carbon and nutrient cycling. These microbes may thus provide opportunities for ecological engineering: manipulation of the microbiome could be used to adjust forest stand traits in desirable ways, for instance to improve resistance to diseases or pests (Miller et al 2008;Busby et al 2017;Witzell and Martín 2018).…”

Section: Biological Attributesmentioning

confidence: 99%

Variable corridor thinning – a cost-effective key to provision of multiple ecosystem services from young boreal conifer forests?

Witzell

Bergström

Bergsten

2019

Scandinavian Journal of Forest Research

Self Cite

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The review discusses the potential of mechanized thinning operations with variable corridor patterns as a method to secure multiple ecosystem services. The focus is on young and dense forests, which are increasingly abundant in Northern Europe and a potential source of renewable biomass for the needs of future bioeconomy. Conventional selective (motor-manual) pre-commercial thinning (PCT) without outtake of cut biomass is used as a benchmark to evaluate a new mechanized thinning method: boom corridor thinning (BCT). The paucity of specific studies on the environmental effects of BCT limits systematic and quantitative comparisons. However, information extrapolated from studies on selective or other corridor thinnings suggests that BCT potentiates early outtake of forest biomass for energy or biorefineries while simultaneously maintaining the stand structure's vertical heterogeneity and thereby supporting biodiversity. More experimental evidence is urgently needed to elucidate the detailed environmental consequences of BCT, and especially its effects on biodiversity and carbon balance. The increasing need to evaluate the pros and cons of silvicultural operations against a broad range of ecosystem benefits necessitates a holistic approach and the development of new typologies and indices that better reflect the structural properties of forest stands.

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“…The role of fungal endophytes in plant resilience is especially important in trees, which face extreme weather conditions and recurring pathogen and insect attacks during their long lifespan (Lau et al, 2017;Terhonen et al, 2019, Martínez-Arias et al, 2020. Endophytic fungi can shape host resistance to biotic stressors through several mechanisms (Witzell and Martín, 2018). Some of these are based on direct interaction between endophytes and pathogens, such as mycoparasitism, competitive exclusion by substrate consumption, and inhibition of the pathogen by extracellular enzymes released by the endophyte, e.g.…”

Section: Introductionmentioning

confidence: 99%

Endophyte inoculation enhancesUlmus minorresistance to Dutch elm disease

Martínez‐Arias

Sobrino-Plata

Ormeño-Moncalvillo

et al. 2020

Preprint

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Certain fungal endophytes are known to improve plant resistance to biotic stresses in forest trees. In this study, three stem fungal endophytes belonging to classes Cystobasidiomycetes, Eurotiomycetes and Dothideomycetes were selected among 210 isolates for their potential as enhancers of Ulmus minor resistance to Ophiostoma novo-ulmi. We evaluated phenotypic traits of these endophytes that could be beneficial for O. novo-ulmi inhibition in the host plant. Under in vitro conditions, the Dothideomycetous isolate YCB36 strongly inhibited O. novo-ulmi growth, released antipathogen VOCs, chitinases and siderophores, and overlapped with the pathogen in nutrient utilization patterns. These functional traits could explain the 40% reduction in leaf wilting due to O. novo-ulmi in elm trees pre-inoculated with this endophyte. Ulmus minor trees responded to endophyte inoculation with increased stomatal conductance and higher amounts of flavonoids and total phenolic compounds in xylem tissues, suggesting induction of defence metabolism.

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Endophytes and Forest Health

Cited by 25 publications

References 124 publications

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

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

Variable corridor thinning – a cost-effective key to provision of multiple ecosystem services from young boreal conifer forests?

Endophyte inoculation enhancesUlmus minorresistance to Dutch elm disease

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