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231226s2023 xx |||||o 00| ||eng c |
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|a 10.1111/nph.19159
|2 doi
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|a pubmed24n1201.xml
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|e rakwb
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|a eng
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| 100 |
1 |
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|a Lucas, Maik
|e verfasserin
|4 aut
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|a The soil pore structure encountered by roots affects plant-derived carbon inputs and fate
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|c 2023
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Completed 22.09.2023
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|a Date Revised 24.09.2023
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a © 2023 The Authors New Phytologist © 2023 New Phytologist Foundation.
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|a Plant roots are the main supplier of carbon (C) to the soil, the largest terrestrial C reservoir. Soil pore structure drives root growth, yet how it affects belowground C inputs remains a critical knowledge gap. By combining X-ray computed tomography with 14 C plant labelling, we identified root-soil contact as a previously unrecognised influence on belowground plant C allocations and on the fate of plant-derived C in the soil. Greater contact with the surrounding soil, when the growing root encounters a pore structure dominated by small (< 40 μm Ø) pores, results in strong rhizodeposition but in areas of high microbial activity. The root system of Rudbeckia hirta revealed high plasticity and thus maintained high root-soil contact. This led to greater C inputs across a wide range of soil pore structures. The root-soil contact Panicum virgatum, a promising bioenergy feedstock crop, was sensitive to the encountered structure. Pore structure built by a polyculture, for example, restored prairie, can be particularly effective in promoting lateral root growth and thus root-soil contact and associated C benefits. The findings suggest that the interaction of pore structure with roots is an important, previously unrecognised, stimulus of soil C gains
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|a Journal Article
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|a Research Support, U.S. Gov't, Non-P.H.S.
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|a Research Support, Non-U.S. Gov't
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|a X-ray computed tomography
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|a carbon allocation
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|a carbon sequestration
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|a pore structure
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|a root-soil contact
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|a Soil
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|a Carbon
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| 700 |
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|a Santiago, James P
|e verfasserin
|4 aut
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|a Chen, Jinyi
|e verfasserin
|4 aut
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| 700 |
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|a Guber, Andrey
|e verfasserin
|4 aut
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| 700 |
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|a Kravchenko, Alexandra
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t The New phytologist
|d 1979
|g 240(2023), 2 vom: 02. Okt., Seite 515-528
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|g volume:240
|g year:2023
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|g day:02
|g month:10
|g pages:515-528
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|u http://dx.doi.org/10.1111/nph.19159
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