ArticlePlant physiology2024
Primary, seminal and lateral roots of maize show type-specific growth and hydraulic responses to water deficit.
Article in Plant physiology, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
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Who cites it
8 citing papers in PubMed.
- Modified strip-tillage boosts maize grain yield and water use efficiency by enhancing fine root length in Northeast China's black soil.Frontiers in plant science · 2026Article
- The role of maize (Zea mays) radicle root hairs in seedling establishment under adverse phosphorus and water seedbed conditions.Annals of botany · 2025Article
- Drought response of the maize plant-soil-microbiome system is influenced by plant size and presence of root hairs.Annals of botany · 2025Article
- Root system ideotypes: what is the potential for breeding drought-tolerant grapevine rootstocks?Journal of experimental botany · 2025Review
- Nitrogen deficiency identifies carbon metabolism pathways and root adaptation in maize.Physiology and molecular biology of plants : an international journal of functional plant biology · 2025Article
- A maize landrace introgression library reveals a negative effect of root-to-shoot ratio on water-use efficiency.The plant genome · 2025Article
- Natural variation in a cortex/epidermis-specific transcription factor bZIP89 determines lateral root development and drought resilience in maize.Science advances · 2025Article
- The transcription factors DOF4.6 and XND1 jointly regulate root hydraulics and drought responses in Arabidopsis.The Plant cell · 2025Article
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5 authors.
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Abstract
The water uptake capacity of a root system is determined by its architecture and hydraulic properties, which together shape the root hydraulic architecture. Here, we investigated root responses to water deficit (WD) in seedlings of a maize (Zea mays) hybrid line (B73H) grown in hydroponic conditions, taking into account the primary root (PR), the seminal roots (SR), and their respective lateral roots. WD was induced by various polyethylene glycol concentrations and resulted in dose-dependent inhibitions of axial and lateral root growth, lateral root formation, and hydraulic conductivity (Lpr), with slightly distinct sensitivities to WD between PR and SR. Inhibition of Lpr by WD showed a half-time of 5 to 6 min and was fully (SR) or partially (PR) reversible within 40 min. In the two root types, WD resulted in reduced aquaporin expression and activity, as monitored by mRNA abundance of 13 plasma membrane intrinsic protein (ZmPIP) isoforms and inhibition of Lpr by sodium azide, respectively. An enhanced suberization/lignification of the epi- and exodermis was observed under WD in axial roots and in lateral roots of the PR but not in those of SR. Inverse modeling revealed a steep increase in axial conductance in root tips of PR and SR grown under WD that may be due to the decreased growth rate of axial roots in these conditions. Overall, our work reveals that these root types show quantitative differences in their anatomical, architectural, and hydraulic responses to WD, in terms of sensitivity, amplitude and reversibility. This distinct functionalization may contribute to integrative acclimation responses of whole root systems to soil WD.
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