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Growth of Arabidopsis thaliana in rhizobox culture system evaluated through the lens of root microbiome

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Abstract

Aims

The present study provides an insight on physiological parameters and root-associated microbiome of two complementary Arabidopsis thaliana culture systems suitable for physiological studies.

Methods

A. thaliana plants were grown in rhizobox and in classic pot culture. An analysis of plant growth parameters along with the characterization of the bacterial communities of the compost and the rhizosphere, rhizoplane and endosphere compartments were performed.

Results

A. thaliana plants grown in rhizobox exhibited a plant habitus similar to those grown in pots during the first month, but with a delayed leaf initiation and slower rate of growth over the experiment. No nutrient deficiency symptoms were observed in these plants. The rhizobox design permits the migration of bacteria from compost to plant roots and allowed root-bacteria interactions to be established as in traditional pot culture. Some differences into the composition of the rhizobiome were highlighted between the two culture systems. Nevertheless, key bacterial taxa that help to ensure plant growth and health colonized the rhizo- and endosphere compartments in both systems.

Conclusions

This study gives some clues for future research programs and selection of efficient root systems with the use of such specific culture devices.

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Acknowledgements

The authors are grateful to Dr. Cécile Vriet for comprehensive review of the manuscript. The results presented here were obtained through the EBI program “AAP”. The authors are sincerely thankful for the scientific support and helpful discussions provided by S. Terrat and the GenoSol platform (INRA Dijon, France; www2.dijon.inra.fr/plateforme_genosol/) for the development of the pyrosequencing and data analysis.

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Correspondence to Nathalie Pourtau.

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The authors declare that they have no conflict of interest.

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Responsible Editor: Luz E. de-Bashan.

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Mercier, A., Mignerot, L., Hennion, N. et al. Growth of Arabidopsis thaliana in rhizobox culture system evaluated through the lens of root microbiome. Plant Soil 455, 467–487 (2020). https://doi.org/10.1007/s11104-020-04650-w

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  • DOI: https://doi.org/10.1007/s11104-020-04650-w

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