Seasonal changes in nitrogen availability, and root and microbial uptake of 15N13C9-phenylalanine and 15N-ammonium in situ at a temperate heath

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Seasonal changes in nitrogen availability, and root and microbial uptake of 15N13C9-phenylalanine and 15N-ammonium in situ at a temperate heath. / Andresen, Louise C.; Michelsen, Anders; Jonasson, Sven Evert; Ström, Lena.

In: Applied Soil Ecology, Vol. 51, 2011, p. 94-101.

Research output: Contribution to journal › Journal article › Research › peer-review

Harvard

Andresen, LC, Michelsen, A, Jonasson, SE & Ström, L 2011, 'Seasonal changes in nitrogen availability, and root and microbial uptake of 15N13C9-phenylalanine and 15N-ammonium in situ at a temperate heath', Applied Soil Ecology, vol. 51, pp. 94-101. https://doi.org/10.1016/j.apsoil.2011.09.005

APA

Andresen, L. C., Michelsen, A., Jonasson, S. E., & Ström, L. (2011). Seasonal changes in nitrogen availability, and root and microbial uptake of 15N13C9-phenylalanine and 15N-ammonium in situ at a temperate heath. Applied Soil Ecology, 51, 94-101. https://doi.org/10.1016/j.apsoil.2011.09.005

Vancouver

Andresen LC, Michelsen A, Jonasson SE, Ström L. Seasonal changes in nitrogen availability, and root and microbial uptake of 15N13C9-phenylalanine and 15N-ammonium in situ at a temperate heath. Applied Soil Ecology. 2011;51:94-101. https://doi.org/10.1016/j.apsoil.2011.09.005

Author

Andresen, Louise C. ; Michelsen, Anders ; Jonasson, Sven Evert ; Ström, Lena. / Seasonal changes in nitrogen availability, and root and microbial uptake of 15N13C9-phenylalanine and 15N-ammonium in situ at a temperate heath. In: Applied Soil Ecology. 2011 ; Vol. 51. pp. 94-101.

Bibtex

@article{2d3d11990e4045f68c3d323b371002c5,
title = "Seasonal changes in nitrogen availability, and root and microbial uptake of 15N13C9-phenylalanine and 15N-ammonium in situ at a temperate heath",
abstract = "In the plant biosynthesis of secondary compounds, phenylalanine is a precursor of condensed tannins. Tannins are deposited into the soil in plant root exudates and dead plant material and have been suggested to precipitate some soil nutrients and hence reduce nutrient availability for plants. Free amino acid,inorganic and microbial N concentration during the growing season was investigated in an ecosystem with a natural tannin chemosphere. The influence of tannins on the uptake of nitrogen in plants and microbes was followed by injecting tannic acid (TA), ammonium-15N and phenylalanine-15N/13C9. Plants preferred ammonium over phenylalanine, while microbes had no preference. Soil microbes had a 77% uptake of intact phenylalanine. Phenylalanine was acquired intact by both grasses and Calluna, with 63% and 38% uptake of intact phenylalanine in grass fine roots and Calluna roots, respectively. Inorganic N and amino acid concentrations were lowest in the period with highest plant activity and grass root biomass but were unaffected by TA addition.",
author = "Andresen, {Louise C.} and Anders Michelsen and Jonasson, {Sven Evert} and Lena Str{\"o}m",
year = "2011",
doi = "10.1016/j.apsoil.2011.09.005",
language = "English",
volume = "51",
pages = "94--101",
journal = "Applied Soil Ecology",
issn = "0929-1393",
publisher = "Elsevier",

}

RIS

TY - JOUR

T1 - Seasonal changes in nitrogen availability, and root and microbial uptake of 15N13C9-phenylalanine and 15N-ammonium in situ at a temperate heath

AU - Andresen, Louise C.

AU - Michelsen, Anders

AU - Jonasson, Sven Evert

AU - Ström, Lena

PY - 2011

Y1 - 2011

N2 - In the plant biosynthesis of secondary compounds, phenylalanine is a precursor of condensed tannins. Tannins are deposited into the soil in plant root exudates and dead plant material and have been suggested to precipitate some soil nutrients and hence reduce nutrient availability for plants. Free amino acid,inorganic and microbial N concentration during the growing season was investigated in an ecosystem with a natural tannin chemosphere. The influence of tannins on the uptake of nitrogen in plants and microbes was followed by injecting tannic acid (TA), ammonium-15N and phenylalanine-15N/13C9. Plants preferred ammonium over phenylalanine, while microbes had no preference. Soil microbes had a 77% uptake of intact phenylalanine. Phenylalanine was acquired intact by both grasses and Calluna, with 63% and 38% uptake of intact phenylalanine in grass fine roots and Calluna roots, respectively. Inorganic N and amino acid concentrations were lowest in the period with highest plant activity and grass root biomass but were unaffected by TA addition.

AB - In the plant biosynthesis of secondary compounds, phenylalanine is a precursor of condensed tannins. Tannins are deposited into the soil in plant root exudates and dead plant material and have been suggested to precipitate some soil nutrients and hence reduce nutrient availability for plants. Free amino acid,inorganic and microbial N concentration during the growing season was investigated in an ecosystem with a natural tannin chemosphere. The influence of tannins on the uptake of nitrogen in plants and microbes was followed by injecting tannic acid (TA), ammonium-15N and phenylalanine-15N/13C9. Plants preferred ammonium over phenylalanine, while microbes had no preference. Soil microbes had a 77% uptake of intact phenylalanine. Phenylalanine was acquired intact by both grasses and Calluna, with 63% and 38% uptake of intact phenylalanine in grass fine roots and Calluna roots, respectively. Inorganic N and amino acid concentrations were lowest in the period with highest plant activity and grass root biomass but were unaffected by TA addition.

U2 - 10.1016/j.apsoil.2011.09.005

DO - 10.1016/j.apsoil.2011.09.005

M3 - Journal article

VL - 51

SP - 94

EP - 101

JO - Applied Soil Ecology

JF - Applied Soil Ecology

SN - 0929-1393

ER -

ID: 35097658