Cited by 79Soil Carbon and Nitrogen DynamicsMycorrhizal Fungi and Plant InteractionsPlant-Microbe Interactions and Immunity

Microbial response to exudates in the rhizosphere of young beech trees (Fagus sylvatica L.) after dormancy

Esperschütz, J., Buegger, F., Winkler, J.B., Munch, J.C., Schloter, M., Gattinger, A.·2009·Soil Biology and Biochemistry

Abstract

Plants act as an important link between atmosphere and soil: CO2 is transformed into carbohydrates by photosynthesis. These assimilates are distributed within the plant and translocated via roots into the rhizosphere and soil microorganisms. In this study, 3 year old European beech trees (Fagus sylvatica L.) were exposed after the chilling period to an enriched 13C-CO2 atmosphere (δ13C = 60ppt - 80ppt) at the time point when leaves development started. Temporal dynamics of assimilated carbon distribution in different plant parts, as well as into dissolved organic carbon and microbial communities in the rhizosphere and bulk soil have been investigated for a 20 days period. Photosynthetically fixed carbon could be traced into plant tissue, dissolved organic carbon and total microbial biomass, where it was utilized by different microbial communities. Due to carbon allocation into the rhizosphere, nutrient stress decreased; exudates were preferentially used by Gram-negative bacteria and (mycorrhizal) fungi, resulting in an enhanced growth. Other microorganisms, like Gram-positive bacteria and mainly micro eucaryotes benefited from the exudates via food web development. Overall our results indicate a fast turnover of exudates and the development of initial food web structures. Additionally a transport of assimilated carbon into bulk soil by (mycrorhizal) fungi was observed.

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Crossref · 10.1016/j.soilbio.2009.07.002

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  • Particular specific monounsaturated fatty acids such as PLFA 16:1ω5, 16:1ω7, 17:1ω8 and 18:1ω7 are highly enriched by root-derived organic carbon in label experiments.

    “Particular specific monounsaturated fatty acids such as PLFA 16:1 o 5, 16:1 o 7, 17:1 o 8 and 18:1 o 7 were shown to be highly enriched by root-derived organic carbon in label experiments 54,55 .”

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Authors
Esperschütz, J., Buegger, F., Winkler, J. B., Munch, J. C., Schloter, M., & Gattinger, A.
Affiliations
  • Helmholtz Munich (DE)
  • Technical University of Munich (DE)
  • Health Innovation University of Applied Sciences (DE)
Corresponding author
Schloter, M.
Venue
Soil Biology and Biochemistry
Publisher
Elsevier BV
Published
2009-09
Volume
41
Issue
9
Pages
1976-1985
ISSN
0038-0717 (ISSN-L)
OpenAlex
W1985079986
Cited by
79
References
64
Citations by year
2026: 2 · 2025: 1 · 2024: 5 · 2023: 3 · 2022: 3 · 2021: 3 · 2020: 4 · 2019: 5 · 2018: 4 · 2017: 12 · 2016: 4 · 2015: 5 · 2014: 4 · 2013: 6 · 2012: 7
FWCI
10.05
Type
journal article
Language
en
Open access
closed
Locations
  • Soil Biology and Biochemistry (publishedVersion)
  • Site cant be reached (submittedVersion)
Topics
  • Life Sciences › Agricultural and Biological Sciences › Soil Science › Soil Carbon and Nitrogen Dynamics
  • Life Sciences › Agricultural and Biological Sciences › Plant Science › Mycorrhizal Fungi and Plant Interactions
  • Life Sciences › Agricultural and Biological Sciences › Plant Science › Plant-Microbe Interactions and Immunity
Keywords
root exudates, rhizosphere microbiome, Fagus sylvatica, carbon allocation, assimilate partitioning, dissolved organic carbon, microbial biomass, Gram-negative bacteria, mycorrhizal fungi, nutritional stress, carbon turnover

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