Sweet shaping of root system architecture under water deficit

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ID: 315244
2026
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Abstract
Abstract Root growth direction under water-deficit conditions is critical for plant survival. Increasing agar concentration in the growth medium simulates stress conditions, limiting water availability. Our study highlights the role of glucose (Glc) in orchestrating the root growth deviation in Arabidopsis under stress conditions. We demonstrate that Glc-TOR signaling plays a central role in modulating root growth direction under stress conditions. Conversely, cytokinin (CK) signaling reduces root deviation during water deficit. We further show that Glc downregulates CK signaling under water-deficit conditions, while CK negatively influences Glc–TOR activity. The interplay between Glc-TOR and CK signaling pathways fine-tunes root orientation by modulating auxin transport and signaling. Collectively, our findings show that in Arabidopsis, Glc-induced changes in root architecture are mediated through its antagonistic interaction with CK signaling, contributing to enhanced root plasticity and improved adaptation to water-limited conditions.
Reference Key
openalex_W7162779995 Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Dhriti Singh, Prakhar Awasthi, Aishwarye Sharma, Harsha Samtani, Brihaspati Narayana Shukla, Ashverya Laxmi
Journal Journal of experimental botany
Year 2026
DOI
10.1093/jxb/erag258
URL
https://doi.org/10.1093/jxb/erag258
Keywords Keywords not found

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