Ectomycorrhizal fungal communities of pedunculate and sessile oak seedlings from bare-root forest nurseries |
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Authors: | Tomasz Leski Marcin Pietras Maria Rudawska |
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Institution: | (1) Institute of Dendrology Polish Academy of Sciences, Kornik, Poland; |
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Abstract: | In this study, we present the detailed molecular investigation of the ectomycorrhizal (ECM) community of Quercus petraea and Quercus robur seedlings grown in bare-root forest nurseries. In all tested oak samples, mycorrhizal colonization was nearly 100%. Morphological
observation and molecular investigations (sequencing of fungal ITS rDNA) revealed a total of 23 mycorrhizal taxa. The most
frequent and abundant fungal taxa were Hebeloma sacchariolens, Tuber sp., and Peziza sp.; from the detected fungal taxa, 20 were noted for Q. petraea and 23 for Q. robur. Depending on the nursery, the species richness of identified ECM fungal taxa for both oak species ranged from six to 11
taxa. The mean species richness for all nurseries was 5.36 and 5.82 taxa per Q. petraea and Q. robur sample, respectively. According to the analysis of similarity, ECM fungal communities were similar for Q. petraea and Q. robur (R = 0.019; p = 0.151). On the other hand, detected fungal communities were significantly different between nurseries (R = 0.927; p < 0.0001). Using the Spearman rank correlation, it was determined that the ectomycorrhizal diversity (in terms of richness,
the Shannon diversity, evenness, and Simpson dominance indices) is significantly related to the soil parameters of each nursery.
We conclude that individual nursery may be considered as separate ecological niches that strongly discriminate diversity of
ECM fungi. |
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