Articles | Volume 8, issue 1
SOIL, 8, 49–57, 2022
https://doi.org/10.5194/soil-8-49-2022
SOIL, 8, 49–57, 2022
https://doi.org/10.5194/soil-8-49-2022
Short communication
 | Highlight paper
20 Jan 2022
Short communication  | Highlight paper | 20 Jan 2022

Rhizodeposition efficiency of pearl millet genotypes assessed on a short growing period by carbon isotopes (δ13C and F14C)

Papa Mamadou Sitor Ndour et al.

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Unravelling relationships between plant rhizosheath, root exudation and soil C dynamic may bring interesting perspectives in breeding for sustainable agriculture. Using four pearl millet lines with contrasting rhizosheaths, we found that δ13C and F14C of root-adhering soil differed from those of bulk and control soil, indicating C exudation in the rhizosphere. This C exudation varied according to the genotype, and conceptual modelling performed with data showed a genotypic effect on the RPE.