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Uptake of nitrogen and carbon from double-labelled (15N and 13C) glycine by mycorrhizal pine seedlings

Title data

Taylor, A. F. S. ; Gebauer, Gerhard ; Read, David J.:
Uptake of nitrogen and carbon from double-labelled (15N and 13C) glycine by mycorrhizal pine seedlings.
In: New Phytologist. Vol. 164 (2004) Issue 2 . - pp. 383-388.
ISSN 1469-8137
DOI: https://doi.org/10.1111/j.1469-8137.2004.01164.x

Abstract in another language

While it is accepted that many ectomycorrhizal fungi can assimilate organic substrates and facilitate transfer of their elemental components to plants, the fate of the carbon contained in these materials remains uncertain. Here we investigate the compartmentation of carbon and nitrogen in ectomycorrhizal seedlings of Pinus sylvestris fed with double-labelled (15N and 13C) glycine as their sole N source.Using isotope ratio mass spectrometry, the quantities of N and C derived from this glycine were determined in sequentially harvested samples of mycorrhizas, roots and shoots.Whereas considerable quantities of 15N were observed in the mycorrhizal tips, roots and shoots, comparable amounts of 13C were observed only in mycorrhizal tips and roots.It is clearly important to resolve the role of compound specificity as a factor determining the extent of amino-acid C transfer from roots to shoots. However, from the standpoint of the C budget of the whole plant, wherever heterotrophically acquired C is available as an energy source it will reduce demands on photosynthetically fixed sources of the element.

Further data

Item Type: Article in a journal
Refereed: Yes
Additional notes: BAYCEER25854
Institutions of the University: Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Biology > Chair Plant Ecology
Research Institutions > Research Centres > Bayreuth Center of Ecology and Environmental Research- BayCEER
Faculties
Faculties > Faculty of Biology, Chemistry and Earth Sciences
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Biology
Research Institutions
Research Institutions > Research Centres
Result of work at the UBT: Yes
DDC Subjects: 500 Science
Date Deposited: 11 Sep 2015 06:34
Last Modified: 17 Mar 2016 11:30
URI: https://eref.uni-bayreuth.de/id/eprint/19250