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Agriculture 2018, 8(2), 28; doi:10.3390/agriculture8020028

Impact of the Genetic–Environment Interaction on the Dynamic of Nitrogen Pools in Arabidopsis

Institut Jean-Pierre Bourgin, INRA, AgroParisTech, CNRS, Université Paris-Saclay, 78000 Versailles, France
AgroParisTech, UMR GENIAL, 1 Avenue des Olympiades, 91744 MASSY CEDEX, France
Author to whom correspondence should be addressed.
Received: 15 December 2017 / Revised: 4 February 2018 / Accepted: 12 February 2018 / Published: 14 February 2018
(This article belongs to the Special Issue Plant Nutrient Dynamics in Stressful Environments)
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Mineral nutrient availability and in particular nitrogen abundance has a huge impact on plant fitness and yield, so that plants have developed sophisticated adaptive mechanisms to cope with environmental fluctuations. The vast natural variation existing among the individuals of a single species constitutes a great potential to decipher complex traits such as nutrient use efficiency. By using natural accessions of Arabidopsis thaliana that differ for their pattern of adaptation to nitrogen stress, we investigated the plant response to nitrate supplies ranging from 0.01 mM up to 50 mM nitrate. The biomass allocation and the different nitrogen pools in shoot and in roots were monitored to establish the nutrition status of each plant. Analysis of variation for these traits revealed genetic differences between accessions for their sensibility to nitrate availability and for their capacity to produce shoot biomass with the same nitrogen nutrition index. From the correlation matrix of all traits measured, a statistical model was formulated to predict the shoot projected area from the nitrate supply. The proposed model points out the importance of genetic variation with respect to the correlation between root thickness and amino acids content in roots. The model provides potential new targets in plant breeding for nitrogen use efficiency. View Full-Text
Keywords: nitrogen use efficiency; G × E interaction; natural variation; nitrogen stress; Arabidopsis thaliana nitrogen use efficiency; G × E interaction; natural variation; nitrogen stress; Arabidopsis thaliana

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Chietera, G.; Chaillou, S.; Bedu, M.; Marmagne, A.; Masclaux-Daubresse, C.; Chardon, F. Impact of the Genetic–Environment Interaction on the Dynamic of Nitrogen Pools in Arabidopsis. Agriculture 2018, 8, 28.

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