ArticleJournal of experimental botany2014
Unexpectedly low nitrogen acquisition and absence of root architecture adaptation to nitrate supply in a Medicago truncatula highly branched root mutant.
Article in Journal of experimental botany, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.
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Who cites it
10 citing papers in PubMed.
- Peptide hormones in plants.Molecular horticulture · 2025Review
- CEP hormones at the nexus of nutrient acquisition and allocation, root development, and plant-microbe interactions.Journal of experimental botany · 2024Review
- The small peptide CEP1 and the NIN-like protein NLP1 regulate NRT2.1 to mediate root nodule formation across nitrate concentrations.The Plant cell · 2023Article
- Control of the rhizobium-legume symbiosis by the plant nitrogen demand is tightly integrated at the whole plant level and requires inter-organ systemic signaling.Frontiers in plant science · 2023Review
- Genotypic diversity and plasticity of root system architecture to nitrogen availability in oilseed rape.PloS one · 2021Article
- Article
- Independent Regulation of Symbiotic Nodulation by the SUNN Negative and CRA2 Positive Systemic Pathways.Plant physiology · 2019Article
- CRootBox: a structural-functional modelling framework for root systems.Annals of botany · 2018Article
- L-System model for the growth of arbuscular mycorrhizal fungi, both within and outside of their host roots.Journal of the Royal Society, Interface · 2016Article
- Reduced frequency of lateral root branching improves N capture from low-N soils in maize.Journal of experimental botany · 2015Article
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Authors and funding
13 authors.
Funding
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Abstract
To complement N2 fixation through symbiosis, legumes can efficiently acquire soil mineral N through adapted root architecture. However, root architecture adaptation to mineral N availability has been little studied in legumes. Therefore, this study investigated the effect of nitrate availability on root architecture in Medicago truncatula and assessed the N-uptake potential of a new highly branched root mutant, TR185. The effects of varying nitrate supply on both root architecture and N uptake were characterized in the mutant and in the wild type. Surprisingly, the root architecture of the mutant was not modified by variation in nitrate supply. Moreover, despite its highly branched root architecture, TR185 had a permanently N-starved phenotype. A transcriptome analysis was performed to identify genes differentially expressed between the two genotypes. This analysis revealed differential responses related to the nitrate acquisition pathway and confirmed that N starvation occurred in TR185. Changes in amino acid content and expression of genes involved in the phenylpropanoid pathway were associated with differences in root architecture between the mutant and the wild type.
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