Root-derived GA12 contributes to temperature-induced shoot growth in Arabidopsis

Abstract

Plants are able to sense a rise in temperature of several degrees, and appropriately adapt their metabolic and growth processes. To this end, plants produce various signalling molecules that act throughout the plant body. Here, we report that root-derived GA12, a precursor of the bioactive gibberellins, mediates thermo-responsive shoot growth in Arabidopsis. Our data suggest that root-to-shoot translocation of GA12 enables a flexible growth response to ambient temperature changes.

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Fig. 1: Root-derived GA are essential for the thermal induction of shoot growth.
Fig. 2: Root-borne GA12 enhances hypocotyl elongation at 28 °C via a DELLA-dependent mechanism.

Data availability

All data generated or analysed during this study are included in the published article and its Supplementary Information.

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Acknowledgements

We thank T.P. Sun for providing seeds of ga1-3 (Col-0 background) and P. Hedden for providing ga20ox1-2-3. This work was supported by the Centre National de la Recherche Scientifique and the French Ministry of Research and Higher Education.

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Authors

Contributions

L.C., T.R., L.S.-A., E.C., J.Z., D.H., N.L., M.J.P.L., T.L., J.-M.D. and P.A. performed experimental work. L.C., T.R., D.H., N.L., M.J.P.L., T.L., J.-M.D. and P.A. designed the experiments. M.S., M.J.P.L., T.L., J.-M.D. and P.A. realised the figures and wrote the paper.

Corresponding author

Correspondence to Patrick Achard.

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Supplementary information

Supplementary Information

Supplementary Discussion and Supplementary Figures 1–5.

Reporting Summary

Supplementary Tables

Supplementary Tables 1–5.

Supplementary Dataset 1

Statistics (ANOVA and t-test), P values.

Source data

Source Data Fig. 1

Statistical source data.

Source Data Fig. 2

Statistical source data.

Source Data Supplementary Fig. 1

Statistical source data.

Source Data Supplementary Fig. 2

Statistical source data.

Source Data Supplementary Fig. 3

Statistical source data.

Source Data Supplementary Fig. 4

Statistical source data.

Source Data Fig. 2d

Unprocessed blots.

Source Data Supplementary Fig. 4b

Unprocessed blots.

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Camut, L., Regnault, T., Sirlin-Josserand, M. et al. Root-derived GA12 contributes to temperature-induced shoot growth in Arabidopsis. Nat. Plants 5, 1216–1221 (2019). https://doi.org/10.1038/s41477-019-0568-8

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