Fungi associated with decomposing deadwood in a natural beech-dominated forest

Baldrián, Petr; Zrůstová, Petra; Tláskal, Vojtěch; Davidová, Anna; Merhautová, Věra; Vrška, Tomáš

doi:10.1016/j.funeco.2016.07.001

Cited by 116 publications

(147 citation statements)

References 57 publications

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“…Moreover, more acidic conditions (lower pH values) were detected in the P. abies wood blocks at the end of the monitoring period, which might lead to favorable conditions for fungal growth and their activity. In accordance with Baldrian et al (2016) and Gómez-Brandón et al (2017), we also found that pH was one of the most influential driving factors shaping wood microbial abundance and activity during the early stages of decomposition. Hoppe et al (2015) reported, however, that variations in the abundances of bacterial phyla (using pyrosequencing analysis) are, rather, determined by a combination of several wood properties (i.e., C and nitrogen contents and wood moisture) than by single parameters such as pH alone.…”

Section: Discussionsupporting

confidence: 84%

Chemical and microbiological changes in Norway spruce deadwood during the early stage of decomposition as a function of exposure in an alpine setting

Bardelli

Gómez-Brandòn

Fornasier³

et al. 2018

Arctic, Antarctic, and Alpine Research

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Alpine ecosystems are vulnerable to ever-changing environmental conditions, leading to shifts in vegetation distribution and composition with implications on soil functionality and carbon (C) turnover. Although deadwood represents an important global C stock, scarce information is available on how slope exposure influences the wood-inhabiting microbiota throughout the decomposition process in an Alpine setting. We therefore evaluated the impact of slope exposure (north-vs. south-facing sites) on physicochemical and microbiological properties (microbial abundance based on real-time PCR: fungal 18S rRNA, dinitrogen reductase [nifH]; microbial biomass: double strand DNA; and microbial activity: hydrolytic enzyme activities of the main nutrient cycles) of Picea abies wood blocks and the underlying soil in a field experiment in the Italian Alps during a three-year period. Overall, a higher abundance of fungi and nitrogen-fixing bacteria was recorded in the soil at the north-facing site where cooler and moister conditions were observed. In contrast, no exposure effects were found for these two microbial groups in the wood blocks, while their abundance increased over time, accompanied by more acidic conditions with progressing decay. The impact of exposure was also enzyme specific and time dependent for both the P. abies wood blocks and the underlying soil.ARTICLE HISTORY

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Section: Discussionsupporting

confidence: 84%

Chemical and microbiological changes in Norway spruce deadwood during the early stage of decomposition as a function of exposure in an alpine setting

Bardelli

Gómez-Brandòn

Fornasier³

et al. 2018

Arctic, Antarctic, and Alpine Research

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“…Samples for determining C concentration were taken from 39 beech, 36 fir and 43 spruce downed logs, and C was measured using sulfochromic oxidation (ISO 14235) [4].…”

Section: Laboratory Analysismentioning

confidence: 99%

“…To quantify decomposition objectively, it is necessary to measure the physical properties of wood, including the remaining mass and density. Such changes in the physical and chemical properties of beech, fir and spruce deadwood correlate significantly with the fungal community structure [4].…”

Section: Introductionmentioning

confidence: 98%

Deadwood Density and Moisture Variation in a Natural Temperate Spruce-Fir-Beech Forest

Přívětivý¹,

Baldrián²,

Šamonil³

et al. 2017

Preprint

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Deadwood represents a source of nutrients, carbon and water for metabolism within forest ecosystem. Nutrients are mobilized due to the decomposition of wood, which is a long-term process that can be best studied by analysing environmental data on a temporary scale. Our study provides physico-temporal data on the downed logs of three major tree species in European temperate forests: Abies alba Mill., Fagus sylvatica L. and Picea abies (L.) Karst. Time since death was obtained using tree censuses (repeated for 40 years) and dendrochronology for each single downed log, the oldest being 75 years old. Standard laboratory methods were used for the determination of wood density and moisture changes. F. sylvatica was decomposed rapidly in the initial phase -mass loss was 50% during the 5 years after death, while A. alba and P. abies lost 13% and 16%, respectively. Downed logs of F. sylvatica contained 391 kg of water per m 3 , while these of P. abies 279 kg. A logtransformed linear model was created that shows the dependence of time since death on mass loss. According to the model, F. sylvatica had the shortest total decomposition time (39 years), followed by A. alba (58 years) and P. abies (86 years).

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“…While these abiotic factors are species specific, they also change during the course of decomposition (Baldrian et al, 2016). Saproxylic insects can act as vectors for WIF but, they are also known to feed on fungal hypha (Stokland et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

Characterization of Unexplored Deadwood Mycobiome in Highly Diverse Subtropical Forests Using Culture-independent Molecular Technique

et al. 2017

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The deadwood mycobiome, also known as wood-inhabiting fungi (WIF), are among the key players in wood decomposition, having a large impact on nutrient cycling in forest soils. However, our knowledge of WIF richness and distribution patterns in different forest biomes is limited. Here, we used pyrotag sequencing of the fungal internal transcribed spacer (ITS2) region to characterize the deadwood mycobiome of two tree species with greatly different wood characteristics (Schima superba and Pinus massoniana) in a Chinese subtropical forest ecosystem. Specifically, we tested (i) the effects of tree species and wood quality properties on WIF OTU richness and community composition; (ii) the role of biotic and abiotic factors in shaping the WIF communities; and (iii) the relationship between WIF OTU richness, community composition and decomposition rates. Due to different wood chemical properties, we hypothesized that the WIF communities derived from the two tree species would be correlated differently with biotic and abiotic factors. Our results show that deadwood in subtropical forests harbors diverse fungal communities comprising six ecological functional groups. We found interesting colonization patterns for this subtropical biome, where Resinicium spp. were highly detected in both broadleaved and coniferous deadwood. In addition, the members of Xylariales were frequently found in Schima. The two deadwood species differed significantly in WIF OTU richness (Pinus > Schima) and community composition (P < 0.001). Variations in WIF community composition of both tree species were significantly explained by wood pH and ecological factors (biotic: deadwood species, basal area and abiotic: soil pH), but the WIF communities derived from each tree species correlated differently with abiotic factors. Interestingly, we found that deadwood decomposition rate significantly correlated with WIF communities and negatively correlated with WIF OTU richness. We conclude that the pattern of WIF OTU richness and community composition are controlled by multiple interacting biotic and abiotic factors. Overall, our study provides an in-depth picture of the deadwood mycobiome in this subtropical forest. Furthermore, by comparing our results to results from temperate and boreal forests we contribute to a better understanding of patterns of WIF communities across different biomes and geographic locations.

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Fungi associated with decomposing deadwood in a natural beech-dominated forest

Cited by 116 publications

References 57 publications

Chemical and microbiological changes in Norway spruce deadwood during the early stage of decomposition as a function of exposure in an alpine setting

Chemical and microbiological changes in Norway spruce deadwood during the early stage of decomposition as a function of exposure in an alpine setting

Deadwood Density and Moisture Variation in a Natural Temperate Spruce-Fir-Beech Forest

Characterization of Unexplored Deadwood Mycobiome in Highly Diverse Subtropical Forests Using Culture-independent Molecular Technique

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