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Die Bedeutung der Kaliumversorgung für Aufnahme und Assimilation von [15N-]Nitrat und [15N-]Ammonium durch Keimpflanzen der Kiefer (Pinus sylvestris)

Title data

Setzer, B. ; Gebauer, Gerhard ; Mohr, Hans:
Die Bedeutung der Kaliumversorgung für Aufnahme und Assimilation von [15N-]Nitrat und [15N-]Ammonium durch Keimpflanzen der Kiefer (Pinus sylvestris).
In: Allgemeine Forst- und Jagdzeitung. Vol. 169 (1998) Issue 4 . - pp. 76-80.
ISSN 0002-5852

Abstract in another language

In the present study with Scots pine seedlings the interaction between nitrate/ammonium - and potassium nutrition was studied with the help of labelled nitrogen (15N). The major results are as follows:The seedlings absorb ammonium much more readily than nitrate.Optimum potassium supply leads to a higher protein content. This effect is to be attributed to an increased assimilation of nitrate and endogenous N-storage compounds.Potassium stimulated protein synthesis corresponds with a decrease of soluble N-containing compounds.Reduced potassium supply leads to the consequence that the additionally absorbed ammonium is incorporated in soluble N-containing compounds.The previously described alleviating effect of potassium on ammonium stress in coniferous seedlings is explained by the potassium mediated decrease of ammonium incorporation.-While uptake of nitrate is independent of potassium supply, ammonium uptake is reduced in the presence of potassium.

Further data

Item Type: Article in a journal
Refereed: Yes
Additional notes: BAYCEER25914
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 06:35
Last Modified: 11 Sep 2015 06:35
URI: https://eref.uni-bayreuth.de/id/eprint/19387