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A hydraulic signal in root‐to‐shoot signalling of water shortage
Abstract
Summary: Photosynthesis and biomass production of plants are controlled by the water status of the soil. Upon soil drying, plants can reduce water consumption by minimizing transpiration through stomata, the closable pores of the leaf. The phytohormone abscisic acid (ABA) mediates stomatal closure, and is the assigned signal for communicating water deficit from the root to the shoot. However, our study does not support ABA as the proposed long‐distance signal. The shoot response to limited soil water supply is not affected by the capacity to generate ABA in the root; however, the response does require ABA biosynthesis and signalling in the shoot. Soil water stress elicits a hydraulic response in the shoot, which precedes ABA signalling and stomatal closure. Attenuation of the hydraulic response in various plants prevented long‐distance signalling of water stress, consistent with root‐to‐shoot communication by a hydraulic signal.
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Cited by
An overview of models of stomatal conductance at the leaf level
DAMOUR, G., SIMONNEAU, T., COCHARD, H., & URBAN, L. (2010) · Plant, Cell & Environment · doi:10.1111/j.1365-3040.2010.02181.x · Cited by 710
Signaling mechanisms in abscisic acid-mediated stomatal closure
Hsu, P., Dubeaux, G., Takahashi, Y., & Schroeder, J. I. (2021) · The Plant Journal · doi:10.1111/tpj.15067 · Cited by 546
Endo, A., Sawada, Y., Takahashi, H., Okamoto, M., Ikegami, K., Koiwai, H., Seo, M., Toyomasu, T., Mitsuhashi, W., Shinozaki, K., et al. (2008) · Plant Physiology · doi:10.1104/pp.108.116632 · Cited by 369
Baxter, I., Hosmani, P. S., Rus, A., Lahner, B., Borevitz, J. O., Muthukumar, B., Mickelbart, M. V., Schreiber, L., Franke, R. B., & Salt, D. E. (2009) · PLoS Genetics · doi:10.1371/journal.pgen.1000492 · Cited by 342
Unravelling rootstockxscion interactions to improve food security
Albacete, A., Martinez-Andujar, C., Martinez-Perez, A., Thompson, A. J., Dodd, I. C., & Perez-Alfocea, F. (2015) · Journal of Experimental Botany · doi:10.1093/jxb/erv027 · Cited by 299
Metadata
- Authors
- Christmann, A., Weiler, E. W., Steudle, E., & Grill, E.
- Venue
- The Plant Journal
- Publisher
- Wiley
- Published
- 2007-07-27
- Volume
- 52
- Issue
- 1
- Pages
- 167-174
- ISSN
- 0960-7412 (ISSN-L)
- 1365-313X
- OpenAlex
- W1507104973
- Cited by
- 546
- References
- 0
- FWCI
- 16.81
- Type
- journal article
- Language
- en
- Open access
- closed
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- Christmann, A., Weiler, E. W., Steudle, E., & Grill, E. (2007). A hydraulic signal in root‐to‐shoot signalling of water shortage. The Plant Journal. https://doi.org/10.1111/j.1365-313x.2007.03234.x
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.
