Abstract
Organic nitrogen (N) can be directly taken up by many plants, particularly under low-temperature and N-limited conditions. The natural environment of Wollemia nobilis, shady conditions and shallow, acidic soils with high organic matter, led to the hypothesis that organic N might be a potential N source, although this species is living in a subtropical area. A pot experiment was carried out to investigate whether W. nobilis seedlings have the capability to take up intact organic N and whether the uptake of organic N contributes significantly to N acquisition for W. nobilis. Three 15N-labeled N forms, ammonium (NH4-N), nitrate (NO3-N), or glycine, were injected into soils separately, and the tissues of plants were then harvested 6 and 48 h after injection. Our results demonstrated that W. nobilis, a subtropical species, has the capability to take up intact glycine as indicated by the enrichment of 13C and 15N in fine roots at a nearly 1:1 ratio. The uptake rate of glycine-N was faster than that of inorganic N, but which was only restricted in the short term (6 h). The absorbed glycine-N reduced quickly (in 48 h), indicating that organic N uptake did not contribute greatly to N acquisition for W. nobilis.
References
Abuzinadah RA, Read DJ (1989) Carbon transfer associated with assimilation of organic nitrogen sources by silver birch (Betula pendula Roth.). Trees 3:17–23
Benson J, Allen C (2007) Vegetation associated with Wollemia nobilis (Araucariaceae). Cunninghamia 10:255–262
Britto DT, Kronzucker HJ (2002) NH4 + toxicity in higher plants: a critical review. J Plant Physiol 159:567–584
Cahn MD, Bouldin DR, Cravo MS (1992) Nitrate sorption in the profile of an acid soil. Plant Soil 143:179–183
Chapin FS III, Moilanen L, Kielland K (1993) Preferential use of organic nitrogen for growth by a non-mycorrhizal arctic sedge. Nature 361:150–153
Chen C, Xu Z, Hughes J (2002) Effects of nitrogen fertilization on soil nitrogen pools and microbial properties in a hoop pine (Araucaria cunninghamii) plantation in southeast Queensland, Australia. Biol Fert Soils 36:276–283
Farquhar GD, Ehleringer JR, Hubick KT (1989) Carbon isotope discrimination and photosynthesis. Annu Rev Plant Physiol Plant Mol Biol 40:503--537
Franco AC, Duarte HM, Geler A, de Mattos EA, Nahm M, Rennenberg H, Ribeiro KT, Scarano FR, Lüttge U (2005) In situ measurements of carbon and nitrogen distribution and composition, photochemical efficiency and stable isotope ratios in Araucaria angustifolia. Trees-Struct Funct 19:422–430
Harrison KA, Bol R, Bardgett RD (2007) Preferences for different nitrogen forms by coexisting plant species and soil microbes. Ecology 88:989–999
Hill KD (1997) Architecture of the Wollemi pine (Wollemia nobilis, Araucariaceae), a unique combination of model and reiteration. Aust J Bot 45:817–826
Jones WG, Hill KD, Allen JM (1995) Wollemia nobilis, a new living Australian genus and species in the Araucariaceae. Telopea 6:173–176
Jones DL, Healey JR, Willett VB et al (2005) Dissolved organic nitrogen uptake by plants—an important N uptake pathway? Soil Biol Biochem 37:413–423
Kahmen A, Livesley SJ, Arndt SK (2009) High potential but low actual glycine uptake of dominant plant species in three Australian land-use types with intermediate N availability. Plant Soil 325:109–121
McFarland JW, Ruess RW, Kielland K, Doyle AP (2002) Cycling dynamics of NH4 + and amino acid nitrogen in soils of a deciduous boreal forest ecosystem. Ecosystems 5:775–788
Näsholm T, Ekblad A, Nordin A, Giesler R, Högberg M, Högberg P (1998) Boreal forest plants take up organic nitrogen. Nature 392:914–916
Näsholm T, Huss-Danell K, Högberg P (2001) Uptake of glycine by field grown wheat. New Phytol 150:59–63
Näsholm T, Kielland K, Ganeteg U (2009) Uptake of organic nitrogen by plants. New Phytol 182:31–48
Nordin A, Högberg P, Näsholm T (2001) Soil nitrogen form and plant nitrogen uptake along a boreal forest productivity gradient. Oecologia 129:125–132
Offord CA, Porter CL, Meagher PF, Erington G (1999) Sexual reproduction and early plant growth of the Wollemi pine (Wollemia nobilis), a rare and threatened Australian conifer. Ann Bot-London 84:1–9
Persson J, Gardeström P, Näsholm T (2006) Uptake, metabolism and distribution of organic and inorganic nitrogen sources by Pinus sylvestris. J Exp Bot 57:2651–2659
Pfautsch S, Gessler A, Adams MA, Rennenberg H (2009) Using amino-N pools and fluxes to identify contributions of understorey Acacia spp. to overstorey Eucalyptus regnans and stand N uptake in temperate Australia. New Phytol 183:1097–1113
Schimel JP, Chapin FS III (1996) Tundra plant uptake of amino acid and NH4 + nitrogen in situ: plants complete well for amino acid N. Ecology 77:2142–2147
Schmidt S, Stewart GR (1999) Glycine metabolism by plant roots and its occurrence in Australian plant communities. Aust J Plant Physiol 26:253–264
Seibt U, Rajabi A, Griffiths H, Berry JA (2008) Carbon isotopes and water use efficiency: sense and sensitivity. Oecologia 155:441–454
Taylor AFS, Gebauer G, Read DJ (2004) Uptake of nitrogen and carbon from double-labelled (N-15 and C-13) glycine by mycorrhizal pine seedlings. New Phytol 164:383–388
Thornton B (2001) Uptake of glycine by non-mycorrhizal Lolium perenne. J Exp Bot 52:1315–1322
Warren CR (2006) Potential organic and inorganic N uptake by six Eucalyptus species. Funct Plant Biol 33:653–660
Warren CR (2009) Uptake of inorganic and amino acid nitrogen from soil by Eucalyptus regnans and Eucalyptus pauciflora seedlings. Tree Physiol 29:401–409
Weigelt A, King R, Bol R, Bardgett RD (2003) Inter-specific variability in organic nitrogen uptake of three temperate grassland species. J Plant Nutr Soil Sc 166:606–611
Weigelt A, Bol R, Bardgett RD (2005) Preferential uptake of soil nitrogen forms by grassland plant species. Oecologia 142:627–635
Acknowledgments
This research was supported by the Australian Research Council (FT0990547; DP0667184). The authors would like to thank the Toolara Nursery, Queensland, Australia, for providing W. nobilis seedlings; Ms. Marijke Heenan, Dr. Yumei Jiang, Dr. Fangfang Sun, and Dr. Xien Long for their laboratory assistance; and Prof. Gary Bacon for his logistic support.
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Wei, L., Chen, C., Xu, Z. et al. Direct uptake and rapid decrease of organic nitrogen by Wollemia nobilis . Biol Fertil Soils 49, 1247–1252 (2013). https://doi.org/10.1007/s00374-013-0818-2
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DOI: https://doi.org/10.1007/s00374-013-0818-2