Disentangling the relative importance of host tree community, abiotic environment and spatial factors on ectomycorrhizal fungal assemblages along an elevation gradient

Matsuoka, Shiro; Mori, Akira; Kawaguchi, Eri; Hobara, Satoru; Osono, Takashi

doi:10.1093/femsec/fiw044

Cited by 55 publications

(63 citation statements)

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“…In the whole forest, total, saprotrophic, pathogenic and EM fungal community compositions were significantly related to various combinations of edaphic, geographic and plant‐related variables, as reported in previous studies (e.g. Pellissier et al ., ; Tedersoo et al ., ; Prober et al ., ; Matsuoka et al ., ). Furthermore, we found that different combinations of abiotic variables were correlated with these fungal compositions between ridge and valley habitats.…”

Section: Discussionmentioning

confidence: 99%

“…However, recent studies have found that the diversity of microbes may show various responses to increases in altitude, including no significant change, increases, reductions, or hump-shaped patterns (e.g. Fierer et al, 2011;Bahram et al, 2012;Pellissier et al, 2014;Matsuoka et al, 2016). These variations in plant and microbial altitudinal diversity patterns may arise because plant diversity is mainly determined by temperature and dispersal limitation (e.g.…”

Section: Introductionmentioning

confidence: 99%

“…Peay et al, 2011;Mart ınez-Garc ıa et al, 2015;Urbanova et al, 2015), but also by abiotic factors such as soil nutrient status, pH, altitude and slope (e.g. Dumbrell et al, 2010;Bahram et al, 2012;Tedersoo et al, 2014;Matsuoka et al, 2016). Furthermore, relationships between fungal and plant communities may be influenced by traits of the fungi, such as trophic type, dispersal ability, diversity, identity, abundance, and phylogeny (Peay et al, 2010Tedersoo et al, 2014Tedersoo et al, , 2015Zobel & € Opik, 2014;Garc ıa de Le on et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

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Relationships between soil fungal and woody plant assemblages differ between ridge and valley habitats in a subtropical mountain forest

et al. 2016

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Elucidating interactions of above-ground and below-ground communities in different habitat types is essential for understanding biodiversity maintenance and ecosystem functioning. Using 454 pyrosequencing of ITS2 sequences we examined the relationship between subtropical mountain forest soil fungal communities, abiotic conditions, and plant communities using correlation and partial models. Ridge and valley habitats with differing fungal communities were delineated. Total, saprotrophic and pathogenic fungal richness were significantly correlated with plant species richness and/or soil nutrients and moisture in the ridge habitat, but with habitat convexity or basal area of Castanopsis eyrei in the valley habitat. Ectomycorrhizal (EM) fungal richness was significantly correlated with basal area of C. eyrei and total EM plants in the ridge and valley habitats, respectively. Total, saprotrophic, pathogenic and EM fungal compositions were significantly correlated with plant species composition and geographic distance in the ridge habitat, but with various combinations of plant species composition, plant species richness, soil C : N ratio and pH or no variables in the valley habitat. Our findings suggest that mechanisms influencing soil fungal diversity and community composition differ between ridge and valley habitats, and relationships between fungal and woody plant assemblages depend on habitat types in the subtropical forest ecosystem.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Relationships between soil fungal and woody plant assemblages differ between ridge and valley habitats in a subtropical mountain forest

et al. 2016

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“…Whereas, recent studies have shown that dispersal of ECM fungi is limited spatially, even at a few kilometers, and that this dispersal limitation can generate spatial structures in ECM fungal communities independent of environmental factors (Peay et al , 2012; Peay & Bruns, 2014). Thus far, the effects of these factors have been investigated at relatively small spatial scales, from forest to landscape scales (e.g., Tedersooet et al , 2011; Bahram et al , 2012; Matsuoka et al , 2016a).…”

Section: Introductionmentioning

confidence: 99%

Biogeographic patterns of ectomycorrhizal fungal communities associated withCastanopsis sieboldiiacross the Japanese archipelago

Matsuoka

Iwasaki

Sugiyama

et al. 2019

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23Biogeographic patterns in ectomycorrhizal (ECM) fungal communities and their drivers 24 have been elucidated, including effects of host tree species and abiotic (climatic and 25 edaphic) conditions. At these geographic scales, genotypic diversity and composition of 26 single host tree species change with spatial and environmental gradients, reflecting their 27 historical dispersal events. However, whether the host genotypes can be associated with 28 the biogeographic patterns of ECM communities remains unclear. We investigated the 29 biogeographic pattern of ECM fungal community associated with the single host species 30 Castanopsis sieboldii (Fagaceae), whose genotypic diversity and composition across the 31 Japanese archipelago has already been evaluated, and we quantified the effect of host 32 genotypes on the biogeographic pattern. Richness and community composition of ECM 33 fungi changed with latitude and longitude; these biogeographic changes of ECM 34 community were significantly explained by host genotypic variables. Quantitative 35 analyses showed a higher relative explanatory power of climatic and spatial variables than 36 that of host genotypic variables for the biogeographic patterns in the ECM community. 37 Our results suggest the importance of historical events of host dispersal in determining 38 the biogeographic patterns of the ECM fungal community, while their explanation power 39 was lower than that for climatic filtering and/or fungal dispersal. 40 41 Key words 42 assembly process, biogeography, ectomycorrhiza, environmental gradient, fungal 43 community, host genotype, spatial structure 44 45 48boreal forests (Brundrett, 2009). The ECM fungi are a major component of the forest 49 floor and play an essential role in nutrient cycling via exchanging soil nutrients and 50 therefore are critical for determining and maintaining forest ecosystem processes (Smith 51 & Read, 2008). To infer the community responses to environmental changes, the 52 relationships between spatial patterns of ECM fungal communities and factors 53 responsible for those patterns have been investigated in previous studies (Lilleskov & 54 Parrent, 2007). In these studies the spatial variations of ECM fungal community were 55 related to key environmental factors including both biotic, such as species identity and 56 phylogeny of the host (Ishida et al., 2007; Tedersoo et al., 2013), and abiotic factors, such 57 as soil property (like soil pH) and climatic conditions (e.g., Bahram et al., 2012; Horton 58 et al., 2013). Whereas, recent studies have shown that dispersal of ECM fungi is limited 59 spatially, even at a few kilometers, and that this dispersal limitation can generate spatial 60 structures in ECM fungal communities independent of environmental factors (Peay et al., 61 2012; Peay & Bruns, 2014). Thus far, the effects of these factors have been investigated 62 at relatively small spatial scales, from forest to landscape scales (e.g., Tedersooet et al., 63 2011; Bahram et al., 2012; Matsu...

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“…Rivers typically consist of a network of multiple branches that originate from the main stream. Terrestrial fungal communities have spatial structures wherein geographically closer sites share similar fungal communities which reflects the surrounding environment and dispersal ability of each species (Talbot et al, 2014; Matsuoka et al, 2016b; Peay et al, 2016). Assuming that fungal DNA assemblages in river water reflect the fungal community compositions of surrounding land, the assemblages also indicate the spatial structure.…”

Section: Introductionmentioning

confidence: 99%

Spatial structures of fungal DNA assemblages revealed with eDNA metabarcoding in a forest river network in western Japan

Matsuoka

Sugiyama

Sato

et al. 2019

Preprint

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24Growing evidence has revealed high diversity and spatial heterogeneity of fungal 25 communities including in local habitats in terrestrial ecosystems. These findings highlight 26 the considerable sampling effort, analysis time, and costs required for the investigation 27 of fungal diversity over large spatial scales. Recently, the analysis of environmental DNA 28 in river water has been undertaken to study the biodiversity of organisms, such as animals 29 and plants, in both aquatic and terrestrial habitats. However, previous studies have not 30 investigated the spatial structure of fungal DNA assemblages in river water. In the present 31 study, we investigate fungal DNA assemblages and their spatial structure using 32 environmental DNA metabarcoding in water across different branches of river over forest 33 landscapes. The river water was found to contain both phylogenetically and functionally 34 diverse fungal DNA, including aquatic and terrestrial fungi, such as plant decomposers 35 and mycorrhizal fungi. These fungal DNA assemblages were more similar within, rather 36 than between, branches. In addition, the assemblages were more similar between spatially 37 closer branches. These results imply that information on the terrestrial and aquatic fungal 38 compositions of watersheds, and therefore their spatial structure can be obtained by 39 investigating the fungal DNA assemblages in river water. 40 41 Keywords 42 environmental DNA, fungi, forest river, metabarcoding, spatial structure 43 44 45 Information on biodiversity composition is essential to understand the ecological 46 processes and functions of ecosystems. Understanding patterns of biodiversity is 47 fundamental for the maintenance of ecological processes during this era of environmental 48 change (Margules and Pressey, 2000; Pecl et al., 2017). The Kingdom Fungi boasts high 49 species diversity and undertakes unique functions in both terrestrial and aquatic 50 ecosystems via the decomposition of organic substrates and symbiotic or parasitic 51 interactions with other organisms, such as animals and plants (Peay et al., 2016; 52 Hawksworth and Lücking, 2017; Grossart et al., 2019). Recently, with the growing use 53 of DNA metabarcoding techniques, an increasing number of studies are investigating 54 fungal diversity on a variety of substrates in terrestrial and aquatic habitats (Duarte et al., 55 2015; Peay et al., 2016; Nilsson et al., 2019). However, as fungi show high local diversity 56 and spatial heterogeneity (Bahram et al., 2015, 2016), the investigation of fungal diversity 57 over large spatial scales, such as landscape (tens of km) and regional scales (hundreds to 58 thousands of km) requires a significant amount of sampling effort, time for analysis, and 59 costs. 60 Recently, the availability of environmental DNA in river water for biodiversity 61 exploration has been discussed in several studies (Deiner et al., 2016; Nakagawa et al. 62 2018). Deiner et al. (2016) suggest that river water can integrate DNA from the catchment 63 ...

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Disentangling the relative importance of host tree community, abiotic environment and spatial factors on ectomycorrhizal fungal assemblages along an elevation gradient

Cited by 55 publications

References 63 publications

Relationships between soil fungal and woody plant assemblages differ between ridge and valley habitats in a subtropical mountain forest

Relationships between soil fungal and woody plant assemblages differ between ridge and valley habitats in a subtropical mountain forest

Biogeographic patterns of ectomycorrhizal fungal communities associated withCastanopsis sieboldiiacross the Japanese archipelago

Spatial structures of fungal DNA assemblages revealed with eDNA metabarcoding in a forest river network in western Japan

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