ArticleJournal of experimental botany2016
Spatiotemporal variation of nitrate uptake kinetics within the maize (Zea mays L.) root system is associated with greater nitrate uptake and interactions with architectural phenes.
Article in Journal of experimental botany, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.
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Who cites it
18 citing papers in PubMed, 53 citations in OpenAlex.
- A genetic module boosts grain yield and nitrogen use efficiency by improving nitrate transport in maize.Nature genetics · 2026Article
- Synergistic adaptation of rice root phosphorus uptake kinetics and leaf carbon-nitrogen metabolism under low-phosphorus conditions.Frontiers in plant science · 2026Article
- Locating the microbes along the maize root system under nitrogen limitation: a root phenotypic approach.Annals of botany · 2025Article
- Linking micro-X-ray fluorescence spectroscopy and X-ray computed tomography with model simulation explains differences in nutrient gradients around roots of different types and ages.The New phytologist · 2025Article
- Effects of Water-Nitrogen Coupling on Root Distribution and Yield of Summer Maize at Different Growth Stages.Plants (Basel, Switzerland) · 2025Article
- The Arabidopsis PIP1;1 Aquaporin Represses Lateral Root Development and Nitrate Uptake Under Low Nitrate Availability.Plant, cell & environment · 2025Article
- Root phenotypes for improved nitrogen capture.Plant and soil · 2024Review
- Large root cortical cells and reduced cortical cell files improve growth under suboptimal nitrogen in silico.Plant physiology · 2023Article
- Integrated root phenotypes for improved rice performance under low nitrogen availability.Plant, cell & environment · 2022Article
- A multiple ion-uptake phenotyping platform reveals shared mechanisms affecting nutrient uptake by roots.Plant physiology · 2021Article
- Targeting Root Ion Uptake Kinetics to Increase Plant Productivity and Nutrient Use Efficiency.Plant physiology · 2020Review
- Nitrate Transporter Gene Expression and Kinetics of Nitrate Uptake byFrontiers in microbiology · 2020Article
- Engineering Strategies to Boost Crop Productivity by Cutting Respiratory Carbon Loss.The Plant cell · 2019Review
- Optimizing soil-coring strategies to quantify root-length-density distribution in field-grown maize: virtual coring trials using 3-D root architecture models.Annals of botany · 2018Article
- Knock-Down ofFrontiers in plant science · 2018Article
- Root Cortical Senescence Improves Growth under Suboptimal Availability of N, P, and K.Plant physiology · 2017Article
- OpenSimRoot: widening the scope and application of root architectural models.The New phytologist · 2017Article
- Impact of axial root growth angles on nitrogen acquisition in maize depends on environmental conditions.Annals of botany · 2016Article
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Authors and funding
3 authors at 2 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Increasing maize nitrogen acquisition efficiency is a major goal for the 21st century. Nitrate uptake kinetics (NUK) are defined by I max and K m, which denote the maximum uptake rate and the affinity of transporters, respectively. Because NUK have been studied predominantly at the molecular and whole-root system levels, little is known about the functional importance of NUK variation within root systems. A novel method was created to measure NUK of root segments that demonstrated variation in NUK among root classes (seminal, lateral, crown, and brace). I max varied among root class, plant age, and nitrate deprivation combinations, but was most affected by plant age, which increased I max, and nitrate deprivation time, which decreased I max K m was greatest for crown roots. The functional-structural simulation SimRoot was used for sensitivity analysis of plant growth to root segment I max and K m, as well as to test interactions of I max with root system architectural phenes. Simulated plant growth was more sensitive to I max than K m, and reached an asymptote near the maximum I max observed in the empirical studies. Increasing the I max of lateral roots had the largest effect on shoot growth. Additive effects of I max and architectural phenes on nitrate uptake were observed. Empirically, only lateral root tips aged 20 d operated at the maximum I max, and simulations demonstrated that increasing all seminal and lateral classes to this maximum rate could increase plant growth by as much as 26%. Therefore, optimizing I max for all maize root classes merits attention as a promising breeding goal.
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