Molecular framework integrating nitrate sensing in root and auxin-guided shoot adaptive responses

Abualia R, Ötvös K, Novák O, Bouguyon E, Domanegg K, Krapp A, Nacry P, Gojon A, Lacombe B, Benková E. 2022. Molecular framework integrating nitrate sensing in root and auxin-guided shoot adaptive responses. Proceedings of the National Academy of Sciences of the United States of America. 119(31), e2122460119.

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Author
Abualia, RashedISTA ; Oetvoes, KrisztinaISTA ; Novák, Ondřej; Bouguyon, Eleonore; Domanegg, KevinISTA ; Krapp, Anne; Nacry, Philip; Gojon, Alain; Lacombe, Benoit; Benková, EvaISTA
Department
Abstract
Mineral nutrition is one of the key environmental factors determining plant development and growth. Nitrate is the major form of macronutrient nitrogen that plants take up from the soil. Fluctuating availability or deficiency of this element severely limits plant growth and negatively affects crop production in the agricultural system. To cope with the heterogeneity of nitrate distribution in soil, plants evolved a complex regulatory mechanism that allows rapid adjustment of physiological and developmental processes to the status of this nutrient. The root, as a major exploitation organ that controls the uptake of nitrate to the plant body, acts as a regulatory hub that, according to nitrate availability, coordinates the growth and development of other plant organs. Here, we identified a regulatory framework, where cytokinin response factors (CRFs) play a central role as a molecular readout of the nitrate status in roots to guide shoot adaptive developmental response. We show that nitrate-driven activation of NLP7, a master regulator of nitrate response in plants, fine tunes biosynthesis of cytokinin in roots and its translocation to shoots where it enhances expression of CRFs. CRFs, through direct transcriptional regulation of PIN auxin transporters, promote the flow of auxin and thereby stimulate the development of shoot organs.
Publishing Year
Date Published
2022-07-25
Journal Title
Proceedings of the National Academy of Sciences of the United States of America
Acknowledgement
We acknowledge Hana Semeradova, Juan Carlos Montesinos, Nicola Cavallari, Marc¸al Gallemı, Kaori Tabata, Andrej Hurny, and Sascha Waidmann for sharing materials; and Marina Borges Osorio for critical reading of the manuscript. Work in the E. Benkova laboratory was supported by the Austrian Science Fund (FWF01_I1774S) to K.O., R.A., and E. Benkova. We acknowledge the Bioimaging Facility and Life Science Facilities of the Institute of Science and Technology Austria. We give sincere thanks to Hana Martınkova and Petra Amakorova for their help with cytokinin analyses. This work was funded by the Czech Science Foundation (Project No. 19-00973S).
Volume
119
Issue
31
Article Number
e2122460119
eISSN
IST-REx-ID

Cite this

Abualia R, Ötvös K, Novák O, et al. Molecular framework integrating nitrate sensing in root and auxin-guided shoot adaptive responses. Proceedings of the National Academy of Sciences of the United States of America. 2022;119(31). doi:10.1073/pnas.2122460119
Abualia, R., Ötvös, K., Novák, O., Bouguyon, E., Domanegg, K., Krapp, A., … Benková, E. (2022). Molecular framework integrating nitrate sensing in root and auxin-guided shoot adaptive responses. Proceedings of the National Academy of Sciences of the United States of America. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.2122460119
Abualia, Rashed, Krisztina Ötvös, Ondřej Novák, Eleonore Bouguyon, Kevin Domanegg, Anne Krapp, Philip Nacry, Alain Gojon, Benoit Lacombe, and Eva Benková. “Molecular Framework Integrating Nitrate Sensing in Root and Auxin-Guided Shoot Adaptive Responses.” Proceedings of the National Academy of Sciences of the United States of America. Proceedings of the National Academy of Sciences, 2022. https://doi.org/10.1073/pnas.2122460119.
R. Abualia et al., “Molecular framework integrating nitrate sensing in root and auxin-guided shoot adaptive responses,” Proceedings of the National Academy of Sciences of the United States of America, vol. 119, no. 31. Proceedings of the National Academy of Sciences, 2022.
Abualia R, Ötvös K, Novák O, Bouguyon E, Domanegg K, Krapp A, Nacry P, Gojon A, Lacombe B, Benková E. 2022. Molecular framework integrating nitrate sensing in root and auxin-guided shoot adaptive responses. Proceedings of the National Academy of Sciences of the United States of America. 119(31), e2122460119.
Abualia, Rashed, et al. “Molecular Framework Integrating Nitrate Sensing in Root and Auxin-Guided Shoot Adaptive Responses.” Proceedings of the National Academy of Sciences of the United States of America, vol. 119, no. 31, e2122460119, Proceedings of the National Academy of Sciences, 2022, doi:10.1073/pnas.2122460119.
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