Plant organic nitrogen nutrition: costs, benefits, and carbon use efficiency

20126 7 108072 2 327505 document 108072 New Phytologist - 2024 - Tünnermann - Plant organic nitrogen nutrition costs benefits and carbon use efficiency.pdf application/pdf 2429f6e0c4a016386c0c34667214f007 MD5 3528100 2024-11-18 10:02:20 https://pure.iiasa.ac.at/id/eprint/20126/1/New%20Phytologist%20-%202024%20-%20T%C3%BCnnermann%20-%20Plant%20organic%20nitrogen%20nutrition%20%20costs%20%20benefits%20%20and%20carbon%20use%20efficiency.pdf 20126 1 1 application/pdf text en public cc_by_4

New Phytologist - 2024 - Tünnermann - Plant organic nitrogen nutrition costs benefits and carbon use efficiency.pdf

published 108084 1 327528 document 108084 indexcodes.txt text/x-asm f312723609d808a5bb12bf9d2fb7848f MD5 11214 2024-11-18 10:12:16 https://pure.iiasa.ac.at/id/eprint/20126/2/indexcodes.txt 20126 2 2 text/x-asm other Generate index codes conversion from text to indexcodes en public

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http://eprints.org/relation/isVersionOf https://pure.iiasa.ac.at/id/document/108072 http://eprints.org/relation/isVolatileVersionOf https://pure.iiasa.ac.at/id/document/108072 http://eprints.org/relation/issmallThumbnailVersionOf https://pure.iiasa.ac.at/id/document/108072 archive 353 disk0/00/02/01/26 2024-11-18 10:03:30 2025-02-11 11:08:23 2024-11-18 10:03:30 article show Tünnermann L. Aguetoni Cambui C. Franklin O. 1791 0000-0002-0376-4140 Merkel P. Näsholm T. Gratz R. Plant organic nitrogen nutrition: costs, benefits, and carbon use efficiency pub BNR AFE Arabidopsis thaliana; amino acids; carbon use efficiency; glutamine; organic nitrogen; root hair Differences in soil mobility and assimilation costs between organic and inorganic nitrogen (N) compounds would hypothetically induce plant phenotypic plasticity to optimize acquisition of, and performance on, the different N forms. Here we evaluated this hypothesis experimentally and theoretically. We grew Arabidopsis in split-root setups combined with stable isotope labelling to study uptake and distribution of carbon (C) and N from l-glutamine (l-gln) and NO3 - and assessed the effect of the N source on biomass partitioning and carbon use efficiency (CUE). Analyses of stable isotopes showed that 40-48% of C acquired from l-gln resided in plants, contributing 7-8% to total C of both shoots and roots. Plants grown on l-gln exhibited increased root mass fraction and root hair length and a significantly lower N uptake rate per unit root biomass but displayed significantly enhanced CUE. Our data suggests that organic N nutrition is linked to a particular phenotype with extensive growth of roots and root hairs that optimizes for uptake of less mobile N forms. Increased CUE and lower N uptake per unit root growth may be key facets linked to the organic N phenotype. 2024-11-15 published Wiley-Blackwell doi:10.1111/nph.20285 95 public New Phytologist 245 1018-1028 TRUE 1469-8137 no info:eu-repo/semantics/article