ArticleThe Plant cell2022
Spatial differences in stoichiometry of EGR phosphatase and Microtubule-associated Stress Protein 1 control root meristem activity during drought stress.
Article in The Plant cell, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.
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Who cites it
9 citing papers in PubMed, 21 citations in OpenAlex.
- Comprehensive Analysis of thePlants (Basel, Switzerland) · 2025Article
- The multifaceted roles of PP2C phosphatases in plant growth, signaling, and responses to abiotic and biotic stresses.Plant communications · 2025Review
- Understanding and optimizing plant growth in water-limited environments: 'growth versus defence' or 'growth versus risk mitigation'?Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2025Article
- PEG treatment is unsuitable to study root related traits as it alters root anatomy in barley (Hordeum vulgare L.).BMC plant biology · 2024Article
- Not so hidden anymore: Advances and challenges in understanding root growth under water deficits.The Plant cell · 2024Review
- Elucidation of the Mechanism of Rapid Growth Recovery in Rice Seedlings after Exposure to Low-Temperature Low-Light Stress: Analysis of Rice Root Transcriptome, Metabolome, and Physiology.International journal of molecular sciences · 2023Article
- Brassinosteroid gene regulatory networks at cellular resolution in theScience (New York, N.Y.) · 2023Article
- Burning questions for a warming and changing world: 15 unknowns in plant abiotic stress.The Plant cell · 2023Article
- Time for a drought experiment: Do you know your plants' water status?The Plant cell · 2023Article
Corrections and comments
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Authors and funding
5 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
During moderate severity drought and low water potential (ψw) stress, poorly understood signaling mechanisms restrict both meristem cell division and subsequent cell expansion. We found that the Arabidopsis thaliana Clade E Growth-Regulating 2 (EGR2) protein phosphatase and Microtubule-Associated Stress Protein 1 (MASP1) differed in their stoichiometry of protein accumulation across the root meristem and had opposing effects on root meristem activity at low ψw. Ectopic MASP1 or EGR expression increased or decreased, respectively, root meristem size and root elongation during low ψw stress. This, along with the ability of phosphomimic MASP1 to overcome the EGR-mediated suppression of root meristem size and the observation that ectopic EGR expression had no effect on unstressed plants, indicated that during low ψw EGR activation and attenuation of MASP1 phosphorylation in their overlapping zone of expression determines root meristem size and activity. Ectopic EGR expression also decreased root cell size at low ψw. Conversely, both the egr1-1 egr2-1 and egr1-1 egr2-1 masp1-1 mutants had similarly increased root cell size but only egr1-1egr2-1 had increased cell division. These observations demonstrated that EGRs affect meristem activity via MASP1 but affect cell expansion via other mechanisms. Interestingly, EGR2 was highly expressed in the root cortex, a cell type important for growth regulation and environmental response.
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