ArticlePlant physiology2004
The spatially variable inhibition by water deficit of maize root growth correlates with altered profiles of proton flux and cell wall pH.
Article in Plant physiology, 2004. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.
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Who cites it
21 citing papers in PubMed.
- Source-sink manipulations through shading, crop load and water deficit affect plant morphogenesis and carbon sink priorities leading to contrasted plant carbon status in grapevine.Annals of botany · 2025Article
- Advanced imaging-enabled understanding of cell wall remodeling mechanisms mediating plant drought stress tolerance.Frontiers in plant science · 2025Review
- Not so hidden anymore: Advances and challenges in understanding root growth under water deficits.The Plant cell · 2024Review
- Full-Length Transcriptome Analysis of theInternational journal of molecular sciences · 2020Article
- Apoplastic Hydrogen Peroxide in the Growth Zone of the Maize Primary Root. Increased Levels Differentially Modulate Root Elongation Under Well-Watered and Water-Stressed Conditions.Frontiers in plant science · 2020Article
- Physiological and Proteomic Analysis of the Rice MutantFrontiers in plant science · 2017Article
- Spatial-temporal analysis of polyethylene glycol-reduced aluminium accumulation and xyloglucan endotransglucosylase action in root tips of common bean (Phaseolus vulgaris).Annals of botany · 2016Article
- Genomic Tools in Pearl Millet Breeding for Drought Tolerance: Status and Prospects.Frontiers in plant science · 2016Review
- Salinity stiffens the epidermal cell walls of salt-stressed maize leaves: is the epidermis growth-restricting?PloS one · 2015Article
- Proteomic and phosphoproteomic analysis of polyethylene glycol-induced osmotic stress in root tips of common bean (Phaseolus vulgaris L.).Journal of experimental botany · 2013Article
- Abscisic acid- and stress-induced highly proline-rich glycoproteins regulate root growth in rice.Plant physiology · 2013Article
- Expansins are involved in cell growth mediated by abscisic acid and indole-3-acetic acid under drought stress in wheat.Plant cell reports · 2012Article
- Apoplastic alkalinization is instrumental for the inhibition of cell elongation in the Arabidopsis root by the ethylene precursor 1-aminocyclopropane-1-carboxylic acid.Plant physiology · 2011Article
- Article
- Alteration of cell-wall porosity is involved in osmotic stress-induced enhancement of aluminium resistance in common bean (Phaseolus vulgaris L.).Journal of experimental botany · 2010Article
- Reductions in maize root-tip elongation by salt and osmotic stress do not correlate with apoplastic O2*- levels.Annals of botany · 2008Article
- Coping mechanisms for crop plants in drought-prone environments.Annals of botany · 2008Review
- Cell wall proteome in the maize primary root elongation zone. II. Region-specific changes in water soluble and lightly ionically bound proteins under water deficit.Plant physiology · 2007Article
- Article
- Dynamics of leaf and root growth: endogenous control versus environmental impact.Annals of botany · 2005Review
Corrections and comments
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Authors and funding
2 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Growth of elongating primary roots of maize (Zea mays) seedlings was approximately 50% inhibited after 48 h in aerated nutrient solution under water deficit induced by polyethylene glycol 6000 at -0.5 MPa water potential. Proton flux along the root elongation zone was assayed by high resolution analyses of images of acid diffusion around roots contacted for 5 min with pH indicator gel. Profiles of root segmental elongation correlated qualitatively and quantitatively (r(2) = 0.74) with proton flux along the surface of the elongation zone from water-deficit and control treatments. Proton flux and segmental elongation in roots under water deficit were remarkably well maintained in the region 0 to 3 mm behind the root tip and were inhibited from 3 to 10 mm behind the tip. Associated changes in apoplastic pH inside epidermal cell walls were measured in three defined regions along the root elongation zone by confocal laser scanning microscopy using a ratiometric method. Finally, external acidification of roots was shown to specifically induce a partial reversal of growth inhibition by water deficit in the central region of the elongation zone. These new findings, plus evidence in the literature concerning increases induced by acid pH in wall-extensibility parameters, lead us to propose that the apparently adaptive maintenance of growth 0 to 3 mm behind the tip in maize primary roots under water deficit and the associated inhibition of growth further behind the tip are related to spatially variable changes in proton pumping into expanding cell walls.
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