Dynamics of localised nitrogen supply and relevance for root growth of Vicia faba (‘Fuego’) and Hordeum vulgare (‘Marthe’) in soil

Abstract Root growth responds to local differences in N-form and concentration. This is known for artificial systems and assumed to be valid in soil. The purpose of this study is to challenge this assumption for soil mesocosms locally supplied with urea with and without nitrification inhibitor. Soil...

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Autores principales:	Sebastian R. G. A. Blaser, Nicolai Koebernick, Oliver Spott, Enrico Thiel, Doris Vetterlein
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2020
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/dd67b948515941bb92a44afa8038f8e8
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spelling	oai:doaj.org-article:dd67b948515941bb92a44afa8038f8e82021-12-02T18:48:08ZDynamics of localised nitrogen supply and relevance for root growth of Vicia faba (‘Fuego’) and Hordeum vulgare (‘Marthe’) in soil10.1038/s41598-020-72140-12045-2322https://doaj.org/article/dd67b948515941bb92a44afa8038f8e82020-09-01T00:00:00Zhttps://doi.org/10.1038/s41598-020-72140-1https://doaj.org/toc/2045-2322Abstract Root growth responds to local differences in N-form and concentration. This is known for artificial systems and assumed to be valid in soil. The purpose of this study is to challenge this assumption for soil mesocosms locally supplied with urea with and without nitrification inhibitor. Soil column experiments with Vicia faba (‘Fuego’) and Hordeum vulgare (‘Marthe’) were performed to investigate soil solution chemistry and root growth response of these two species with contrasting root architectures to the different N-supply simultaneously. Root growth was analysed over time and separately for the fertiliser layer and the areas above and below with X-ray CT (via region growing) and WinRHIZO. Additionally, NO3 − and NH4 + in soil and soil solution were analysed. In Vicia faba, no pronounced differences were observed, although CT analysis indicated different root soil exploration for high NH4 +. In Hordeum vulgare, high NO3 − inhibited lateral root growth while high NH4 + stimulated the formation of first order laterals. The growth response to locally distributed N-forms in soil is species specific and less pronounced than in artificial systems. The combination of soil solution studies and non-invasive imaging of root growth can substantially improve the mechanistic understanding of root responses to different N-forms in soil.Sebastian R. G. A. BlaserNicolai KoebernickOliver SpottEnrico ThielDoris VetterleinNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 10, Iss 1, Pp 1-16 (2020)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Sebastian R. G. A. Blaser Nicolai Koebernick Oliver Spott Enrico Thiel Doris Vetterlein Dynamics of localised nitrogen supply and relevance for root growth of Vicia faba (‘Fuego’) and Hordeum vulgare (‘Marthe’) in soil
description	Abstract Root growth responds to local differences in N-form and concentration. This is known for artificial systems and assumed to be valid in soil. The purpose of this study is to challenge this assumption for soil mesocosms locally supplied with urea with and without nitrification inhibitor. Soil column experiments with Vicia faba (‘Fuego’) and Hordeum vulgare (‘Marthe’) were performed to investigate soil solution chemistry and root growth response of these two species with contrasting root architectures to the different N-supply simultaneously. Root growth was analysed over time and separately for the fertiliser layer and the areas above and below with X-ray CT (via region growing) and WinRHIZO. Additionally, NO3 − and NH4 + in soil and soil solution were analysed. In Vicia faba, no pronounced differences were observed, although CT analysis indicated different root soil exploration for high NH4 +. In Hordeum vulgare, high NO3 − inhibited lateral root growth while high NH4 + stimulated the formation of first order laterals. The growth response to locally distributed N-forms in soil is species specific and less pronounced than in artificial systems. The combination of soil solution studies and non-invasive imaging of root growth can substantially improve the mechanistic understanding of root responses to different N-forms in soil.
format	article
author	Sebastian R. G. A. Blaser Nicolai Koebernick Oliver Spott Enrico Thiel Doris Vetterlein
author_facet	Sebastian R. G. A. Blaser Nicolai Koebernick Oliver Spott Enrico Thiel Doris Vetterlein
author_sort	Sebastian R. G. A. Blaser
title	Dynamics of localised nitrogen supply and relevance for root growth of Vicia faba (‘Fuego’) and Hordeum vulgare (‘Marthe’) in soil
title_short	Dynamics of localised nitrogen supply and relevance for root growth of Vicia faba (‘Fuego’) and Hordeum vulgare (‘Marthe’) in soil
title_full	Dynamics of localised nitrogen supply and relevance for root growth of Vicia faba (‘Fuego’) and Hordeum vulgare (‘Marthe’) in soil
title_fullStr	Dynamics of localised nitrogen supply and relevance for root growth of Vicia faba (‘Fuego’) and Hordeum vulgare (‘Marthe’) in soil
title_full_unstemmed	Dynamics of localised nitrogen supply and relevance for root growth of Vicia faba (‘Fuego’) and Hordeum vulgare (‘Marthe’) in soil
title_sort	dynamics of localised nitrogen supply and relevance for root growth of vicia faba (‘fuego’) and hordeum vulgare (‘marthe’) in soil
publisher	Nature Portfolio
publishDate	2020
url	https://doaj.org/article/dd67b948515941bb92a44afa8038f8e8
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Dynamics of localised nitrogen supply and relevance for root growth of Vicia faba (‘Fuego’) and Hordeum vulgare (‘Marthe’) in soil

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