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@INPROCEEDINGS{S:917382,
      author       = {S, Schultes and Metzner, Ralf and Pflugfelder, Daniel and
                      Hinz, Carsten and Chlubek, Antonia and van Dusschoten,
                      Dagmar and Huber, Gregor and Bauke, S and Watt, M and
                      Koller, Robert and Knief, C},
      title        = {{A}llocation patterns of recently fixed carbon in the root
                      system of maize influence the rhizosphere microbiota},
      reportid     = {FZJ-2023-00596},
      year         = {2022},
      abstract     = {Plants transport substantial amounts of recently fixed
                      carbon into their root system. This carbon is partially
                      released into the rhizosphere by rhizodeposition, where it
                      supports life of rhizosphere microorganisms. Little is known
                      about the spatial distribution of recently fixed C within
                      the root system, and how these distributional patterns
                      relate to rhizodeposition and the assembly and activity of
                      rhizosphere microbial communities. To assess root-internal C
                      distribution, we labelled maize plants with short-lived
                      11CO2. 11C allocation within the root system was visualized
                      using positron emission tomography (PET) in combination with
                      magnetic resonance imaging (MRI). Image-guided sampling of
                      the rhizosphere was then performed on day 21 after sowing
                      from different root types and “tracer rich” versus
                      “tracer poor” root regions to reveal local differences
                      in the rhizosphere microbiota. Rhizosphere samples were
                      analysed based on amplicon sequencing targeting bacteria and
                      fungi. This revealed that root type caused spatial variation
                      in the rhizosphere microbiota, while C distribution in the
                      root system influenced the community structure rather
                      slightly. To further analyse the link between root-internal
                      carbon allocation patterns and carbon metabolism in the
                      rhizosphere, 11CO2 labelling was combined with 13CO2
                      labelling. Isotope ratio mass spectrometry (IRMS) analyses
                      of rhizosphere soil showed that root-internal carbon
                      allocation patterns were mostly well reflected in the
                      distribution of 13C in the rhizosphere soil. The
                      metabolically active rhizosphere organisms were identified
                      based on DNA stable isotope probing. The results of this
                      spatially resolved community analyses along with the
                      associated root-internal C allocation patterns and
                      13C-patterns in the rhizosphere will be discussed in the
                      conference presentation.},
      month         = {Aug},
      date          = {2022-08-14},
      organization  = {ISME 18, Lausanne (Switzerland), 14
                       Aug 2022 - 19 Aug 2022},
      subtyp        = {After Call},
      cin          = {IBG-2},
      cid          = {I:(DE-Juel1)IBG-2-20101118},
      pnm          = {2171 - Biological and environmental resources for
                      sustainable use (POF4-217)},
      pid          = {G:(DE-HGF)POF4-2171},
      typ          = {PUB:(DE-HGF)6},
      url          = {https://juser.fz-juelich.de/record/917382},
}