000917382 001__ 917382
000917382 005__ 20240226075522.0
000917382 037__ $$aFZJ-2023-00596
000917382 041__ $$aEnglish
000917382 1001_ $$0P:(DE-HGF)0$$aS, Schultes$$b0
000917382 1112_ $$aISME  18$$cLausanne$$d2022-08-14 - 2022-08-19$$wSwitzerland
000917382 245__ $$aAllocation patterns of recently fixed carbon in the root system of maize influence the rhizosphere microbiota
000917382 260__ $$c2022
000917382 3367_ $$033$$2EndNote$$aConference Paper
000917382 3367_ $$2DataCite$$aOther
000917382 3367_ $$2BibTeX$$aINPROCEEDINGS
000917382 3367_ $$2DRIVER$$aconferenceObject
000917382 3367_ $$2ORCID$$aLECTURE_SPEECH
000917382 3367_ $$0PUB:(DE-HGF)6$$2PUB:(DE-HGF)$$aConference Presentation$$bconf$$mconf$$s1687845149_7802$$xAfter Call
000917382 520__ $$aPlants 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.
000917382 536__ $$0G:(DE-HGF)POF4-2171$$a2171 - Biological and environmental resources for sustainable use (POF4-217)$$cPOF4-217$$fPOF IV$$x0
000917382 7001_ $$0P:(DE-Juel1)129360$$aMetzner, Ralf$$b1$$ufzj
000917382 7001_ $$0P:(DE-Juel1)131784$$aPflugfelder, Daniel$$b2$$ufzj
000917382 7001_ $$0P:(DE-Juel1)171304$$aHinz, Carsten$$b3$$ufzj
000917382 7001_ $$0P:(DE-Juel1)129303$$aChlubek, Antonia$$b4$$ufzj
000917382 7001_ $$0P:(DE-Juel1)129425$$avan Dusschoten, Dagmar$$b5$$ufzj
000917382 7001_ $$0P:(DE-Juel1)129333$$aHuber, Gregor$$b6$$ufzj
000917382 7001_ $$0P:(DE-HGF)0$$aBauke, S$$b7
000917382 7001_ $$0P:(DE-HGF)0$$aWatt, M$$b8
000917382 7001_ $$0P:(DE-Juel1)165733$$aKoller, Robert$$b9$$ufzj
000917382 7001_ $$0P:(DE-HGF)0$$aKnief, C$$b10$$eCorresponding author
000917382 909CO $$ooai:juser.fz-juelich.de:917382$$pVDB
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000917382 9141_ $$y2023
000917382 9201_ $$0I:(DE-Juel1)IBG-2-20101118$$kIBG-2$$lPflanzenwissenschaften$$x0
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000917382 980__ $$aI:(DE-Juel1)IBG-2-20101118
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