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6 results for “root-associated fungi”
Can root-associated fungi mediate the impact of abiotic conditions on the growth of a High Arctic herb?
<p>This is a dataset containing fragments of internal transcribed spacer 2 (ITS2) extracted from <em>Bistorta vivipara</em> root-associated fungi, sampled from snow fence experiment in Adventdalen, Svalbard. </p> <p>This dataset was used in Wutkowska et al., 2020, Can root-associated fungi mediate the impact of abiotic conditions on the growth of a High Arctic herb?Can root-associated fungi mediate the impact of abiotic conditions on the growth of a High Arctic herb? [available at biorXiv.org, DOI: 10.1101/2020.06.20.157099]</p> <p>Now the manuscript is available as a peer-reviewed paper:</p> <p>Wutkowska, Magdalena, Dorothee Ehrich, Sunil Mundra, Anna Vader, and Pernille Bronken Eidesen. 2021. ‘Can Root-Associated Fungi Mediate the Impact of Abiotic Conditions on the Growth of a High Arctic Herb?’ <em>Soil Biology and Biochemistry</em> 159:108284. doi: 10.1016/j.soilbio.2021.108284.</p> <p> </p> <p>All other corresponding data are available here: https://github.com/magdawutkowska/bistorta</p>
Community composition of arctic root-associated fungi mirrors host plant phylogeny
<p></p><p>The number of plant species regarded as non-mycorrhizal increases at higher latitudes, and several plant species in the High-Arctic Archipelago Svalbard have been reported as non-mycorrhizal. We used the rRNA ITS2 and 18S gene markers to survey which fungi, as well as other micro-eukaryotes, were associated with roots of 31 arctic plant species not usually regarded as mycorrhizal in Svalbard. We assessed to what degree the root-associated fungi showed any host preference and whether the phylogeny of the plant hosts may mirror the composition of root-associated fungi. Fungal communities were largely structured according to host plant identity and to a less extent by environmental factors. We observed a positive relationship between the phylogenetic distance of host plants and the distance of fungal community composition between samples, indicating that the evolutionary history of the host plants plays a major role for which fungi colonize the plant roots. In contrast to the ITS2 marker, the 18S rRNA gene marker showed that chytrid fungi were prevalently associated with plant roots, together with a wide spectrum of amoeba-like protists and nematodes. Our study confirms that arbuscular mycorrhizal (AM) fungi are present also in arctic environments in low abundance.</p><p></p>
Neighboring trees regulate the root-associated pathogenic fungi on the host plant in a subtropical forest
<p>Root-associated fungi and host-specific pathogens are major determinants of species coexistence in forests. Phylogenetically related neighboring trees can strongly affect the fungal community structure of the host plant, which, in turn, will affect the ecological processes. Unfortunately, our understanding of the factors influencing fungal community composition in forests is still limited. In particular, investigation of the relationship between the phytopathogenic fungal community and neighboring trees is incomplete. In the current study, we tested the host specificity of members of the root-associated fungal community collected from seven tree species and determined the influence of neighboring trees and habitat variation on the composition of the phytopathogenic fungal community of the focal plant in a subtropical evergreen forest. Using high-throughput sequencing data with respect to the internal transcribed spacer (ITS) region, we characterized the community composition of the root-associated fungi and found significant differences with respect to fungal groups among the seven tree species. The density of conspecific neighboring trees had a significantly positive influence on the relative abundance of phytopathogens, especially host-specific pathogens, while the heterospecific neighbor density had a significant negative impact on the species richness of host-specific pathogens, as well as phytopathogens. Our work provides evidence that the root-associated phytopathogenic fungi of a host plant depends greatly on the tree neighbors of the host plant.</p>
Community composition of arctic root-associated fungi mirrors host plant phylogeny
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Data from: Community composition and diversity of Neotropical root-associated fungi in common and rare trees
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Neighboring trees regulate the root-associated pathogenic fungi on the host plant in a subtropical forest
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