Molecular Genetic Approaches Toward Understanding Forest-Associated Fungi and Their Interactive Roles Within Forest Ecosystems

Stewart, Jane E.; Kim, Mee‐Sook; Klopfenstein, Ned B.

doi:10.1007/s40725-018-0076-5

Cited by 18 publications

(20 citation statements)

References 94 publications

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“…The DNA-sequence data indicate that previous somatic pairing tests provided the accurate identification of A. altimontana and A. solidipes; however, tef1 sequencing appears to be a more reliable and faster method for identifying Armillaria spp. in North America [36,[77][78][79][80][81].…”

Section: Discussionmentioning

confidence: 99%

“…; however, the role of these microbial communities is not well-understood in forest ecosystems. Soil metagenomic and metatranscriptomic techniques (e.g., [80]), coupled with environmental data, such as soil properties, moisture, temperature, plant coverage, etc., could provide greater insight into the soil microbial communities and ecological functions that favor A. altimontana, increase tree growth and survival, and reduce Armillaria root disease [81].…”

Section: Discussionmentioning

confidence: 99%

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Armillaria altimontana Is Associated with Healthy Western White Pine (Pinus monticola): Potential in Situ Biological Control of the Armillaria Root Disease Pathogen, A. solidipes

Warwell

McDonald

Hanna

et al. 2019

Forests

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Research Highlights: Two genets of Armillaria altimontana Brazee, B. Ortiz, Banik, and D.L. Lindner and five genets of Armillaria solidipes Peck (as A. ostoyae [Romagnesi] Herink) were identified and spatially mapped within a 16-year-old western white pine (Pinus monticola Doug.) plantation, which demonstrated distinct spatial distribution and interspecific associations. Background and Objectives: A. solidipes and A. altimontana frequently co-occur within inland western regions of the contiguous USA. While A. solidipes is well-known as a virulent primary pathogen that causes root disease on diverse conifers, little has been documented on the impact of A. altimontana or its interaction with A. solidipes on growth, survival, and the Armillaria root disease of conifers. Materials and Methods: In 1971, a provenance planting of P. monticola spanning 0.8 ha was established at the Priest River Experimental Forest in northern Idaho, USA. In 1987, 2076 living or recently dead trees were measured and surveyed for Armillaria spp. to describe the demography and to assess the potential influences of Armillaria spp. on growth, survival, and the Armillaria root disease among the study trees. Results: Among the study trees, 54.9% were associated with Armillaria spp. The genets of A. altimontana and A. solidipes comprised 82.7% and 17.3% of the sampled isolates (n = 1221) from the study plot, respectively. The mapped distributions showed a wide, often noncontiguous, spatial span of individual Armillaria genets. Furthermore, A. solidipes was found to be uncommon in areas dominated by A. altimontana. The trees colonized by A. solidipes were associated with a lower tree growth/survival and a substantially higher incidence of root disease than trees colonized only by A. altimontana or trees with no colonization by Armillaria spp. Conclusions: The results demonstrate that A. altimontana was not harmful to P. monticola within the northern Idaho planting. In addition, the on-site, species-distribution patterns suggest that A. altimontana acts as a long-term, in situ biological control of A. solidipes. The interactions between these two Armillaria species appear critical to understanding the Armillaria root disease in this region.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Armillaria altimontana Is Associated with Healthy Western White Pine (Pinus monticola): Potential in Situ Biological Control of the Armillaria Root Disease Pathogen, A. solidipes

Warwell

McDonald

Hanna

et al. 2019

Forests

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“…For some species, the geographical regions examined captured most of the variation observed; meaning that after accounting for variables related to climate, forest connectivity and resource quality, the presence of these fungi was mainly confined to particular geographical areas. However, the use of developed techniques of DNA-based identification including multi-gene and metagenomic identification of environmental DNA is sometimes inevitably necessary to reveal rare and invasive species within a habitat (Stewart et al 2018). Because many wood-associated fungi are morphological similar to each other or cause similar symptoms on their hosts and also obligate forest pathogens are unable to grow on synthetic cultures (Stewart et al 2018).…”

Section: Phylogenetic Analysismentioning

confidence: 99%

“…However, the use of developed techniques of DNA-based identification including multi-gene and metagenomic identification of environmental DNA is sometimes inevitably necessary to reveal rare and invasive species within a habitat (Stewart et al 2018). Because many wood-associated fungi are morphological similar to each other or cause similar symptoms on their hosts and also obligate forest pathogens are unable to grow on synthetic cultures (Stewart et al 2018).…”

Section: Phylogenetic Analysismentioning

confidence: 99%

Characterizations of tree-decay fungi by molecular and morphological investigationsin aniranian alamdardeh forest

Bari

Karimi

Aghajani

et al. 2021

Maderas, Cienc. tecnol.

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Forest trees are considered important in ameliorating climate change through removing carbon dioxide from the atmosphere, stabilizing water catchments and for timber production. Wood decay fungi are among the most important biotic factors in ecosystems, infecting valuable landscaping trees causing an economic loss or the preeminent recyclers of the wood. In a survey of forest trees in the Alamdardeh forest, northern Iran, fungal fruit bodies were collected and isolations made. Based on a combination of macro-morphological characteristics and molecular analyses, using the sequence data of ITS-rDNA, isolates were identified to the species level. A total of 22 species in nine families and 15 genera were identified. Most isolates were the white-rot fungi. Additionally, the brown-rot fungus Laetiporus sulphureus and the soft-rot species Xylaria longipes were identified.

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“…They are capable of developing in very different lifestyles, from saprophytes to plants, to animal and human pathogens, parasites and symbionts. Through their adaptative capacities, these organisms could play also roles as biocatalyst agents [ 1 ]. In addition, some fungi have the ability to interact with each other and with other ecosystem components in a multi-dimensional and complex way within the forest ecosystems [ 1 , 2 , 3 , 4 ].…”

Section: Introductionmentioning

confidence: 99%

A First Insight into North American Plant Pathogenic Fungi Armillaria sinapina Transcriptome

Fradj

Montigny

Mérindol

et al. 2020

Biology

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Armillaria sinapina, a fungal pathogen of primary timber species of North American forests, causes white root rot disease that ultimately kills the trees. A more detailed understanding of the molecular mechanisms underlying this illness will support future developments on disease resistance and management, as well as in the decomposition of cellulosic material for further use. In this study, RNA-Seq technology was used to compare the transcriptome profiles of A. sinapina fungal culture grown in yeast malt broth medium supplemented or not with betulin, a natural compound of the terpenoid group found in abundance in white birch bark. This was done to identify enzyme transcripts involved in the metabolism (redox reaction) of betulin into betulinic acid, a potent anticancer drug. De novo assembly and characterization of A. sinapina transcriptome was performed using Illumina technology. A total of 170,592,464 reads were generated, then 273,561 transcripts were characterized. Approximately, 53% of transcripts could be identified using public databases with several metabolic pathways represented. A total of 11 transcripts involved in terpenoid biosynthesis were identified. In addition, 25 gene transcripts that could play a significant role in lignin degradation were uncovered, as well as several redox enzymes of the cytochromes P450 family. To our knowledge, this research is the first transcriptomic study carried out on A. sinapina.

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Molecular Genetic Approaches Toward Understanding Forest-Associated Fungi and Their Interactive Roles Within Forest Ecosystems

Cited by 18 publications

References 94 publications

Armillaria altimontana Is Associated with Healthy Western White Pine (Pinus monticola): Potential in Situ Biological Control of the Armillaria Root Disease Pathogen, A. solidipes

Armillaria altimontana Is Associated with Healthy Western White Pine (Pinus monticola): Potential in Situ Biological Control of the Armillaria Root Disease Pathogen, A. solidipes

Characterizations of tree-decay fungi by molecular and morphological investigationsin aniranian alamdardeh forest

A First Insight into North American Plant Pathogenic Fungi Armillaria sinapina Transcriptome

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