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Differences in soil fungal communities between European beech (Fagus sylvatica L.) dominated forests are related to soil and understory vegetation.

Wubet T, Christ S, Schöning I, Boch S, Gawlich M, Schnabel B, Fischer M, Buscot F - PLoS ONE (2012)

Bottom Line: However, within each study region we found no difference in fungal community structure between management types.Our results also showed region specific significant correlation patterns between the dominant ectomycorrhizal fungal genera.This suggests that soil fungal communities are region-specific but nevertheless composed of functionally diverse and complementary taxa.

View Article: PubMed Central - PubMed

Affiliation: UFZ-Helmholtz Centre for Environmental Research, Department of Soil Ecology, Halle (Saale), Germany. tesfaye.wubet@ufz.de

ABSTRACT
Fungi are important members of soil microbial communities with a crucial role in biogeochemical processes. Although soil fungi are known to be highly diverse, little is known about factors influencing variations in their diversity and community structure among forests dominated by the same tree species but spread over different regions and under different managements. We analyzed the soil fungal diversity and community composition of managed and unmanaged European beech dominated forests located in three German regions, the Schwäbische Alb in Southwestern, the Hainich-Dün in Central and the Schorfheide Chorin in the Northeastern Germany, using internal transcribed spacer (ITS) rDNA pyrotag sequencing. Multiple sequence quality filtering followed by sequence data normalization revealed 1655 fungal operational taxonomic units. Further analysis based on 722 abundant fungal OTUs revealed the phylum Basidiomycota to be dominant (54%) and its community to comprise 71.4% of ectomycorrhizal taxa. Fungal community structure differed significantly (p≤0.001) among the three regions and was characterized by non-random fungal OTUs co-occurrence. Soil parameters, herbaceous understory vegetation, and litter cover affected fungal community structure. However, within each study region we found no difference in fungal community structure between management types. Our results also showed region specific significant correlation patterns between the dominant ectomycorrhizal fungal genera. This suggests that soil fungal communities are region-specific but nevertheless composed of functionally diverse and complementary taxa.

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Relative distribution of the four dominant ectomycorrhizal fungal families Russulaceae, Inocybaceae, Sebacinaceae and Thelophoraceae among the three study regions and their relationships with soil pH, C:N ratio and Sand content determined using Box plots and linear regression analysis respectively.Different letters above bars in the box plots indicate significant differences between the sites (p≤0.05) based on a Tukey HSD post hoc pairwise comparison. Significant regression lines are presented with p-values.
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pone-0047500-g005: Relative distribution of the four dominant ectomycorrhizal fungal families Russulaceae, Inocybaceae, Sebacinaceae and Thelophoraceae among the three study regions and their relationships with soil pH, C:N ratio and Sand content determined using Box plots and linear regression analysis respectively.Different letters above bars in the box plots indicate significant differences between the sites (p≤0.05) based on a Tukey HSD post hoc pairwise comparison. Significant regression lines are presented with p-values.

Mentions: ANOVA followed by a Tukey HSD post hoc analysis indicated significant variation in ECM fungal family richness among the three regions. Similar analysis of individual families also revealed a significant variation in the richness of some families among the study regions and a significant correlation to soil parameters. For example richness of the Russulaceae was significantly lower in the Hainich-Dün site (p≤0.05) compared to the highest richness in Schorfheide Chorin, where the observed richness was positively correlated with sand content and soil C:N ratio. The Sebacinaceae and Thelephoraceae showed relatively low richness in Schorfheide Chorin. Their richness was increasing with soil pH and decreasing with sand content and soil C:N ratio. However, richness of members of the Inocybaceae was increasing with soil pH. Their diversity was higher in the Schwäbische Alb than in both other regions (Figure 5).


Differences in soil fungal communities between European beech (Fagus sylvatica L.) dominated forests are related to soil and understory vegetation.

Wubet T, Christ S, Schöning I, Boch S, Gawlich M, Schnabel B, Fischer M, Buscot F - PLoS ONE (2012)

Relative distribution of the four dominant ectomycorrhizal fungal families Russulaceae, Inocybaceae, Sebacinaceae and Thelophoraceae among the three study regions and their relationships with soil pH, C:N ratio and Sand content determined using Box plots and linear regression analysis respectively.Different letters above bars in the box plots indicate significant differences between the sites (p≤0.05) based on a Tukey HSD post hoc pairwise comparison. Significant regression lines are presented with p-values.
© Copyright Policy
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC3475711&req=5

pone-0047500-g005: Relative distribution of the four dominant ectomycorrhizal fungal families Russulaceae, Inocybaceae, Sebacinaceae and Thelophoraceae among the three study regions and their relationships with soil pH, C:N ratio and Sand content determined using Box plots and linear regression analysis respectively.Different letters above bars in the box plots indicate significant differences between the sites (p≤0.05) based on a Tukey HSD post hoc pairwise comparison. Significant regression lines are presented with p-values.
Mentions: ANOVA followed by a Tukey HSD post hoc analysis indicated significant variation in ECM fungal family richness among the three regions. Similar analysis of individual families also revealed a significant variation in the richness of some families among the study regions and a significant correlation to soil parameters. For example richness of the Russulaceae was significantly lower in the Hainich-Dün site (p≤0.05) compared to the highest richness in Schorfheide Chorin, where the observed richness was positively correlated with sand content and soil C:N ratio. The Sebacinaceae and Thelephoraceae showed relatively low richness in Schorfheide Chorin. Their richness was increasing with soil pH and decreasing with sand content and soil C:N ratio. However, richness of members of the Inocybaceae was increasing with soil pH. Their diversity was higher in the Schwäbische Alb than in both other regions (Figure 5).

Bottom Line: However, within each study region we found no difference in fungal community structure between management types.Our results also showed region specific significant correlation patterns between the dominant ectomycorrhizal fungal genera.This suggests that soil fungal communities are region-specific but nevertheless composed of functionally diverse and complementary taxa.

View Article: PubMed Central - PubMed

Affiliation: UFZ-Helmholtz Centre for Environmental Research, Department of Soil Ecology, Halle (Saale), Germany. tesfaye.wubet@ufz.de

ABSTRACT
Fungi are important members of soil microbial communities with a crucial role in biogeochemical processes. Although soil fungi are known to be highly diverse, little is known about factors influencing variations in their diversity and community structure among forests dominated by the same tree species but spread over different regions and under different managements. We analyzed the soil fungal diversity and community composition of managed and unmanaged European beech dominated forests located in three German regions, the Schwäbische Alb in Southwestern, the Hainich-Dün in Central and the Schorfheide Chorin in the Northeastern Germany, using internal transcribed spacer (ITS) rDNA pyrotag sequencing. Multiple sequence quality filtering followed by sequence data normalization revealed 1655 fungal operational taxonomic units. Further analysis based on 722 abundant fungal OTUs revealed the phylum Basidiomycota to be dominant (54%) and its community to comprise 71.4% of ectomycorrhizal taxa. Fungal community structure differed significantly (p≤0.001) among the three regions and was characterized by non-random fungal OTUs co-occurrence. Soil parameters, herbaceous understory vegetation, and litter cover affected fungal community structure. However, within each study region we found no difference in fungal community structure between management types. Our results also showed region specific significant correlation patterns between the dominant ectomycorrhizal fungal genera. This suggests that soil fungal communities are region-specific but nevertheless composed of functionally diverse and complementary taxa.

Show MeSH
Related in: MedlinePlus