Articles | Volume 13, issue 5
Biogeosciences, 13, 1693–1703, 2016
https://doi.org/10.5194/bg-13-1693-2016
Biogeosciences, 13, 1693–1703, 2016
https://doi.org/10.5194/bg-13-1693-2016
Research article
18 Mar 2016
Research article | 18 Mar 2016

Direct uptake of organically derived carbon by grass roots and allocation in leaves and phytoliths: 13C labeling evidence

Anne Alexandre et al.

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Short summary
This 13C labeling experiment demonstrates that carbon can be absorbed by the roots, translocated in the plant, and ultimately fixed in organic compounds subject to occlusion in silica particles that form inside plant cells (phytoliths). Plausible forms of carbon absorbed, translocated, and fixed in phytoliths are assessed. Implications for our understanding of the C cycle at the plant-soil-atmosphere interface are discussed.
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