Preferential uptake of soil nitrogen forms by grassland plant species View Full Text


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Article Info

DATE

2005-02

AUTHORS

Alexandra Weigelt, Roland Bol, Richard D. Bardgett

ABSTRACT

In this study, we assessed whether a range of temperate grassland species showed preferential uptake for different chemical forms of N, including inorganic N and a range of amino acids that commonly occur in temperate grassland soil. Preferential uptake of dual-labelled (13C and 15N) glycine, serine, arginine and phenylalanine, as compared to inorganic N, was tested using plants growing in pots with natural field soil. We selected five grass species representing a gradient from fertilised, productive pastures to extensive, low productivity pastures (Lolium perenne, Holcus lanatus, Anthoxanthum odoratum, Deschampsia flexuosa, and Nardus stricta). Our data show that all grass species were able to take up directly a diversity of soil amino acids of varying complexity. Moreover, we present evidence of marked inter-species differences in preferential use of chemical forms of N of varying complexity. L. perenne was relatively more effective at using inorganic N and glycine compared to the most complex amino acid phenylalanine, whereas N. stricta showed a significant preference for serine over inorganic N. Total plant N acquisition, measured as root and shoot concentration of labelled compounds, also revealed pronounced inter-species differences which were related to plant growth rate: plants with higher biomass production were found to take up more inorganic N. Our findings indicate that species-specific differences in direct uptake of different N forms combined with total N acquisition could explain changes in competitive dominance of grass species in grasslands of differing fertility. More... »

PAGES

627-635

References to SciGraph publications

  • 1988-07. Uptake of amino acids by plants from the soil: A comparative study with castor bean seedlings grown under natural and axenic soil conditions in PLANT AND SOIL
  • 2001-09. Soil nitrogen form and plant nitrogen uptake along a boreal forest productivity gradient in OECOLOGIA
  • 1995-11. Landscape patterns of free amino acids in arctic tundra soils in BIOGEOCHEMISTRY
  • 2002-01. Resource-based niches provide a basis for plant species diversity and dominance in arctic tundra in NATURE
  • 2002-02. Variation in nitrogen-15 natural abundance and nitrogen uptake traits among co-occurring alpine species: do species partition by nitrogen form? in OECOLOGIA
  • 1998-01. Plant-microbe competition for soil amino acids in the alpine tundra: effects of freeze-thaw and dry-rewet events in OECOLOGIA
  • 1999-07. Variation in competitive abilities of plants and microbes for specific amino acids in BIOLOGY AND FERTILITY OF SOILS
  • 1998-04. Boreal forest plants take up organic nitrogen in NATURE
  • 2003-03. Alpine plants show species-level differences in the uptake of organic and inorganic nitrogen in PLANT AND SOIL
  • 2001-08. The unexpected versatility of plants: organic nitrogen use and availability in terrestrial ecosystems in OECOLOGIA
  • 1993-01. Preferential use of organic nitrogen for growth by a non-mycorrhizal arctic sedge in NATURE
  • 1998-11. Uptake of amino acids by the aquatic resurrection plant Chamaegigas intrepidus and its implication for N nutrition in OECOLOGIA
  • 1996-11. Non-mycorrhizal uptake of amino acids by roots of the alpine sedge Kobresia myosuroides: implications for the alpine nitrogen cycle in OECOLOGIA
  • Identifiers

    URI

    http://scigraph.springernature.com/pub.10.1007/s00442-004-1765-2

    DOI

    http://dx.doi.org/10.1007/s00442-004-1765-2

    DIMENSIONS

    https://app.dimensions.ai/details/publication/pub.1028526387

    PUBMED

    https://www.ncbi.nlm.nih.gov/pubmed/15549402


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