Fungal colonization as affected by litter depth and decomposition stage of needle litter

Osono, Takashi; Hirose, Dai; Fujimaki, Reiji

doi:10.1016/j.soilbio.2006.04.028

Cited by 47 publications

(26 citation statements)

References 29 publications

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“…A clade composed entirely of forest sequences showed great relation to the order Mucorales, within species of Umbelopsis. The frequency of these species is generally high in decomposing needles litter layer (Osono et al, 2006). The data obtained in this work, along with the results reported in the literature, demonstrate the importance of this phylum in the cycling of organic matter in forestry soils.…”

Section: Discussionsupporting

confidence: 81%

Impact of Amazon land use on the community of soil fungi

Fracetto¹,

Azevedo²,

Fracetto³

et al. 2013

Sci. agric. (Piracicaba, Braz.)

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Section: Discussionsupporting

confidence: 81%

Impact of Amazon land use on the community of soil fungi

Fracetto¹,

Azevedo²,

Fracetto³

et al. 2013

Sci. agric. (Piracicaba, Braz.)

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“…The positive effect of burial on fungal biomass and-activity was already apparent at the first harvest and appears not to be related to interactions with bacteria as the numbers of bacteria were not affected by burial at this stage. The positive effect of burial on fungal biomass and activity is in agreement with Osono et al (2006) who found more fungal hyphae on needles placed beneath the litter layer than on needles on the litter surface. They ascribed this to the higher moisture content of the needles in the soil.…”

Section: Vertical Position Of the Woody Fragmentssupporting

confidence: 91%

Initial decay of woody fragments in soil is influenced by size, vertical position, nitrogen availability and soil origin

et al. 2007

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Fast-growing bacteria and fungi are expected to cause the initial stage of decomposition of woody fragments in and on soils, i.e. the respiration of sugars, organic acids, pectin and easily accessible cellulose and hemi-cellulose. However, little is known about the factors regulating initial wood decomposition. We examined the effect of wood fragment size, vertical position, nitrogen addition and soil origin on initial wood decay and on the relative importance of fungi and bacteria therein. Two fractions of birch wood were used in microcosm experiments, namely wood blocks (dimensions: 3×0.5×0.5 cm) and sawdust (dimensions: 0.5-2 mm). The woody fragments were enclosed in nylon bags and placed on top of-or buried in an abandoned arable soil and in a heathland soil. After 15, 25 and 40 weeks of incubation, fungal biomass was quantified (as ergosterol and chitin content) and bacterial numbers were determined. The results indicated that initial wood decay was mostly caused by fungi; bacteria were only contributing in sawdust in/on abandoned arable soil. Larger fragment size, burial of fragments and nitrogen addition positively influenced fungal biomass and activity. Fungal biomass and decay activities were much lower in woody fragments incubated in/on heathland soil than in those incubated in/on abandoned arable soil, indicating that soil origin is also an important factor determining initial wood decay.

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“…Litter quality changes during the course of its transformation and so does the activity of litter-associated microorganisms (Dilly et al, 2001). These changes are accompanied by a succession of microbial litter decomposers that reflect the varied catabolic capabilities that are sequentially required to complete the process of litter decomposition (Frankland, 1998;Osono et al, 2006).…”

Section: Introductionmentioning

confidence: 99%

Fungal community on decomposing leaf litter undergoes rapid successional changes

2012

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Fungi are considered the primary decomposers of dead plant biomass in terrestrial ecosystems. However, current knowledge regarding the successive changes in fungal communities during litter decomposition is limited. Here we explored the development of the fungal community over 24 months of litter decomposition in a temperate forest with dominant Quercus petraea using 454-pyrosequencing of the fungal internal transcribed spacer (ITS) region and cellobiohydrolase I (cbhI) genes, which encode exocellulases, to specifically address cellulose decomposers. To quantify the involvement of phyllosphere fungi in litter decomposition, the fungal communities in live leaves and leaves immediately before abscission were also analysed. The results showed rapid succession of fungi with dramatic changes in the composition of the fungal community. Furthermore, most of the abundant taxa only temporarily dominated in the substrate. Fungal diversity was lowest at leaf senescence, increased until month 4 and did not significantly change during subsequent decomposition. Highly diverse community of phyllosphere fungi inhabits live oak leaves 2 months before abscission, and these phyllosphere taxa comprise a significant share of the fungal community during early decomposition up to the fourth month. Sequences assigned to the Ascomycota showed highest relative abundances in live leaves and during the early stages of decomposition. In contrast, the relative abundance of sequences assigned to the Basidiomycota phylum, particularly basidiomycetous yeasts, increased with time. Although cellulose was available in the litter during all stages of decomposition, the community of cellulolytic fungi changed substantially over time. The results indicate that litter decomposition is a highly complex process mediated by various fungal taxa.

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Fungal colonization as affected by litter depth and decomposition stage of needle litter

Cited by 47 publications

References 29 publications

Impact of Amazon land use on the community of soil fungi

Impact of Amazon land use on the community of soil fungi

Initial decay of woody fragments in soil is influenced by size, vertical position, nitrogen availability and soil origin

Fungal community on decomposing leaf litter undergoes rapid successional changes

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