The role of soil fungi and bacteria in plant litter decomposition and macroaggregate formation determined using phospholipid fatty acids

Helfrich, Mirjam; Ludwig, Bernard; Thoms, Carolin; Gleixner, Gerd; Flessa, Heinz

doi:10.1016/j.apsoil.2015.08.023

Cited by 66 publications

(23 citation statements)

References 17 publications

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“…The enrichment of SOC and growth of fine-root biomass after afforestation can be attributed to the shift of microbial communities' structure (e.g., increased fungi biomass), rather than SMBC [64]. Temporal increases in large aggregates have previously been attributed to higher fine-root inputs [65][66][67][68][69]. Decomposed fine roots provide C for the microbial community, which facilitates macroaggregate formation [2,36,37].…”

Section: Discussionmentioning

confidence: 99%

Soil Aggregation and Organic Carbon Dynamics in Poplar Plantations

Fang

Chen

et al. 2018

Forests

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Soil resident water-stable macroaggregates (diameter (Ø) > 0.25 mm) play a critical role in organic carbon conservation and fertility. However, limited studies have investigated the direct effects of stand development on soil aggregation and its associated mechanisms. Here, we examined the dynamics of soil organic carbon, water-stable macroaggregates, litterfall production, fine-root (Ø < 1 mm) biomass, and soil microbial biomass carbon with stand development in poplar plantations (Populus deltoides L. ‘35’) in Eastern Coastal China, using an age sequence (i.e., five, nine, and 16 years since plantation establishment). We found that the quantity of water-stable macroaggregates and organic carbon content in topsoil (0–10 cm depth) increased significantly with stand age. With increasing stand age, annual aboveground litterfall production did not differ, while fine-root biomass sampled in June, August, and October increased. Further, microbial biomass carbon in the soil increased in June but decreased when sampled in October. Ridge regression analysis revealed that the weighted percentage of small (0.25 mm ≤ Ø < 2 mm) increased with soil microbial biomass carbon, while that of large aggregates (Ø ≥ 2 mm) increased with fine-root biomass as well as microbial biomass carbon. Our results reveal that soil microbial biomass carbon plays a critical role in the formation of both small and large aggregates, while fine roots enhance the formation of large aggregates.

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Section: Discussionmentioning

confidence: 99%

Soil Aggregation and Organic Carbon Dynamics in Poplar Plantations

Fang

Chen

et al. 2018

Forests

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“…Furthermore, fungi are important in affecting soil aggregation, in that hyphae and organicbinding agents produced by fungi stimulate aggregate formation (Tisdall, 1994;Bossuyt et al, 2001;Helfrich et al, 2015). This will be especially important after a forest fire, where both soil structure and fungal biomass will be destroyed.…”

Section: Introductionmentioning

confidence: 98%

Bacterial and fungal growth in burnt acid soils amended with different high C/N mulch materials

Barreiro

Bååth

Díaz-Raviña

2016

Soil Biology and Biochemistry

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“…This method has low phylogenetic resolution in comparison to DNA based approaches but is useful in identifying active microbial populations through stable isotope probing (Garcia-Pausas and Paterson, 2011;Gutierrez-Zamora and Manefield, 2010;Helfrich et al, 2015;Neufeld et al, 2007bNeufeld et al, , 2007aTavi et al, 2013). Land use change has been shown to alter soil microbial community composition (French et al, 2017;Tosi et al, 2016;Zhang et al, 2016).…”

Section: Carbon Transfer To Soil Microbial Communitiesmentioning

confidence: 99%

Functional differences in the microbial processing of recent assimilates under two contrasting perennial bioenergy plantations

Elias

Rowe

Pereira

et al. 2017

Soil Biology and Biochemistry

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a b s t r a c tLand use change driven alteration of microbial communities can have implications on belowground C cycling and storage, although our understanding of the interactions between plant C inputs and soil microbes is limited. Using phospholipid fatty acids (PLFA's) we profiled the microbial communities under two contrasting UK perennial bioenergy crops, Short Rotation Coppice (SRC) willow and Miscanthus Giganteus (miscanthus), and used Functional differences in microbial communities were highlighted by contrasting processing of labelled C. SRC willow allocated 44% of total 13 C detected into fungal PLFA relative to 9% under miscanthus and 380% more 13 C was returned to the atmosphere in soil respiration from SRC willow soil compared to miscanthus. Our findings elucidate the roles that bacteria and fungi play in the turnover of recent plant derived C under these two perennial bioenergy crops, and provide important evidence on the impacts of land use change to bioenergy on microbial community composition. Crown

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The role of soil fungi and bacteria in plant litter decomposition and macroaggregate formation determined using phospholipid fatty acids

Cited by 66 publications

References 17 publications

Soil Aggregation and Organic Carbon Dynamics in Poplar Plantations

Soil Aggregation and Organic Carbon Dynamics in Poplar Plantations

Bacterial and fungal growth in burnt acid soils amended with different high C/N mulch materials

Functional differences in the microbial processing of recent assimilates under two contrasting perennial bioenergy plantations

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