Evidence of considerable C and N transfer from peas to cereals via direct root contact but not via mycorrhiza

Abstract Intercropping of legumes and cereals is an important management method for improving yield stability, especially in organic farming systems. However, knowledge is restricted on the relevance of different nutrient transfer pathways. The objective of the study was to quantify nitrogen (N) and...

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Autores principales:	Anke Hupe, Franziska Naether, Thorsten Haase, Christian Bruns, Jürgen Heß, Jens Dyckmans, Rainer Georg Joergensen, Florian Wichern
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/3ac38ea9c0f74994836e205a2b250376
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spelling	oai:doaj.org-article:3ac38ea9c0f74994836e205a2b2503762021-12-02T15:56:57ZEvidence of considerable C and N transfer from peas to cereals via direct root contact but not via mycorrhiza10.1038/s41598-021-90436-82045-2322https://doaj.org/article/3ac38ea9c0f74994836e205a2b2503762021-06-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-90436-8https://doaj.org/toc/2045-2322Abstract Intercropping of legumes and cereals is an important management method for improving yield stability, especially in organic farming systems. However, knowledge is restricted on the relevance of different nutrient transfer pathways. The objective of the study was to quantify nitrogen (N) and carbon (C) transfer from peas to triticale by (1) direct root contact (= R), (2) arbuscular mycorrhizal fungi (AMF; = A), and (3) diffusion (= D). Pea (Pisum sativum cv. Frisson and P2) and triticale (Triticum × Secale cv. Benetto) plants as intercrop were grown for 105 days. Treatment ADR enabled all transfer paths between the two crops. Treatment AD with root exclusion enabled AMF and diffusion transfer between peas and triticale. Treatment A with a diffusion gap barrier only allowed AMF transfer. Pea plants were labelled every 14 days with a 13C glucose and 15N urea solution, using the cotton wick technique. Direct root contact resulted in the highest pea rhizodeposition and thus the largest absolute amounts of N and C transfer to triticale. Root exclusion generally changed composition of rhizodeposits from fine root residues towards root exudates. Pea plant-N consisted of 17% N derived from rhizodeposition (NdfR) in treatment ADR but only 8% in the treatments AD and A, independently of pea variety, whereas pea plant-C consisted of 13% C derived from rhizodeposition (CdfR), without pea variety and transfer path treatment effects. Averaging all transfer path treatments, 6.7% of NdfR and 2.7% of CdfR was transferred from Frisson and P2 to triticale plants. Approximately 90% of this NdfR was transferred by direct root contact from Frisson to triticale and only 10% by AMF, whereas only 55% of CdfR was transferred to triticale by direct root contact, 40% by AMF and 5% by diffusion. Similar percentages were transferred from mutant P2 to triticale. Root exclusion generally changed RD composition from fine root residues towards root exudates.Anke HupeFranziska NaetherThorsten HaaseChristian BrunsJürgen HeßJens DyckmansRainer Georg JoergensenFlorian WichernNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-10 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Anke Hupe Franziska Naether Thorsten Haase Christian Bruns Jürgen Heß Jens Dyckmans Rainer Georg Joergensen Florian Wichern Evidence of considerable C and N transfer from peas to cereals via direct root contact but not via mycorrhiza
description	Abstract Intercropping of legumes and cereals is an important management method for improving yield stability, especially in organic farming systems. However, knowledge is restricted on the relevance of different nutrient transfer pathways. The objective of the study was to quantify nitrogen (N) and carbon (C) transfer from peas to triticale by (1) direct root contact (= R), (2) arbuscular mycorrhizal fungi (AMF; = A), and (3) diffusion (= D). Pea (Pisum sativum cv. Frisson and P2) and triticale (Triticum × Secale cv. Benetto) plants as intercrop were grown for 105 days. Treatment ADR enabled all transfer paths between the two crops. Treatment AD with root exclusion enabled AMF and diffusion transfer between peas and triticale. Treatment A with a diffusion gap barrier only allowed AMF transfer. Pea plants were labelled every 14 days with a 13C glucose and 15N urea solution, using the cotton wick technique. Direct root contact resulted in the highest pea rhizodeposition and thus the largest absolute amounts of N and C transfer to triticale. Root exclusion generally changed composition of rhizodeposits from fine root residues towards root exudates. Pea plant-N consisted of 17% N derived from rhizodeposition (NdfR) in treatment ADR but only 8% in the treatments AD and A, independently of pea variety, whereas pea plant-C consisted of 13% C derived from rhizodeposition (CdfR), without pea variety and transfer path treatment effects. Averaging all transfer path treatments, 6.7% of NdfR and 2.7% of CdfR was transferred from Frisson and P2 to triticale plants. Approximately 90% of this NdfR was transferred by direct root contact from Frisson to triticale and only 10% by AMF, whereas only 55% of CdfR was transferred to triticale by direct root contact, 40% by AMF and 5% by diffusion. Similar percentages were transferred from mutant P2 to triticale. Root exclusion generally changed RD composition from fine root residues towards root exudates.
format	article
author	Anke Hupe Franziska Naether Thorsten Haase Christian Bruns Jürgen Heß Jens Dyckmans Rainer Georg Joergensen Florian Wichern
author_facet	Anke Hupe Franziska Naether Thorsten Haase Christian Bruns Jürgen Heß Jens Dyckmans Rainer Georg Joergensen Florian Wichern
author_sort	Anke Hupe
title	Evidence of considerable C and N transfer from peas to cereals via direct root contact but not via mycorrhiza
title_short	Evidence of considerable C and N transfer from peas to cereals via direct root contact but not via mycorrhiza
title_full	Evidence of considerable C and N transfer from peas to cereals via direct root contact but not via mycorrhiza
title_fullStr	Evidence of considerable C and N transfer from peas to cereals via direct root contact but not via mycorrhiza
title_full_unstemmed	Evidence of considerable C and N transfer from peas to cereals via direct root contact but not via mycorrhiza
title_sort	evidence of considerable c and n transfer from peas to cereals via direct root contact but not via mycorrhiza
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/3ac38ea9c0f74994836e205a2b250376
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Evidence of considerable C and N transfer from peas to cereals via direct root contact but not via mycorrhiza

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