+ Site Statistics
+ Search Articles
+ Subscribe to Site Feeds
Most Shared
PDF Full Text
+ PDF Full Text
Request PDF Full Text
+ Follow Us
Follow on Facebook
Follow on Twitter
Follow on LinkedIn
+ Translate
+ Recently Requested

Nitrogen acquisition from inorganic and organic sources by boreal forest plants in the field

Nitrogen acquisition from inorganic and organic sources by boreal forest plants in the field

Oecologia 137(2): 252-257

A wide range of recent studies have indicated that organic nitrogen may be of great importance to plant nitrogen (N) nutrition. Most of these studies have, however, been conducted in laboratory settings, excluding important factors for actual plant uptake, such as competition, mycorrhizal associations and soil interactions. In order to accurately evaluate the importance of different N compounds to plant N nutrition, field studies are crucial. In this study, we investigated short- as well as long-term plant nitrogen uptake by Deschampsia flexuosa, Picea abies and Vaccinium myrtillus from 15NO3-, 15NH4+ and (U-13C, 15N) arginine, glycine or peptides. Root N uptake was analysed after 6 h and 64 days following injections. Our results show that all three species, irrespective of their type of associated mycorrhiza (arbuscular, ecto- or ericoid, respectively) rapidly acquired similar amounts of N from the entire range of added N sources. After 64 days, P. abies and V. myrtillus had acquired similar amounts of N from all N sources, while for D. flexuosa, the uptake from all N sources except ammonium was significantly lower than that from nitrate. Furthermore, soil analyses indicate that glycine was rapidly decarboxylated after injections, while other organic compounds exhibited slower turnover. In all, these results suggest that a wide range of N compounds may be of importance for the N nutrition of these boreal forest plants, and that the type of mycorrhiza may be of great importance for N scavenging, but less important to the N uptake capacity of plants.

(PDF emailed within 0-6 h: $19.90)

Accession: 003861955

Download citation: RISBibTeXText

PMID: 12883986

DOI: 10.1007/s00442-003-1334-0

Related references

Nitrogen Acquisition from Inorganic and Organic Sources by Boreal Forest Plants in the Field. Oecologia 137(2): 252-257, 2003

Boreal forest plants take up organic nitrogen. Nature (London) 392(6679): 914-916, April 30, 1998

Organic nitrogen uptake by boreal forest plants. Acta Universitatis Agriculturae Sueciae Silvestria (265): 51 pp. + Papers I-V, 2003

Inorganic and organic nitrogen acquisition by a fern Dicranopteris dichotoma in a subtropical forest in South China. Plos One 9(5): E90075, 2014

Azolla and NH4NO3 as organic and inorganic nitrogen sources for rice plants. International Rice Research Newsletter 10(6): 26-27, 1985

Feedback from soil inorganic nitrogen on soil organic matter mineralisation and growth in a boreal forest ecosystem. Plant and Soil 338(1-2): 193-203, 2011

The contribution of ericoid plants to soil nitrogen chemistry and organic matter decomposition in boreal forest soil. Soil Biology and Biochemistry 103: 394-404, 2016

Plant acquisition of organic nitrogen in boreal forests. Physiologia Plantarum 111(4): 419-426, 2001

Boreal bog plants: nitrogen sources and uptake of recently deposited nitrogen. Environmental Pollution 126(2): 191-200, 2003

Utilization of inorganic or organic nitrogen by leguminous plants at different ratio of C: N in the plant, III. The effect of nitro-gen nutrition on the relation of carbohydrates to nitrogen in pea and lupine plants. Ann Univ Mariae Curie Sklodowska Sect C Biol 20: 315-339, 1965

The utilization of inorganic or organic nitrogen by leguminous plants at various C : N ratios in the plants. Part II. Amino acids as a nitrogen source for some leguminous plants. Ann. Univ. M. Curie-Sklodowska, Sect. E. 19: 499-535. bibls 12, 1964

Effect of different combinations of organic and inorganic sources of nutrients on mineralization of organic carbon and nitrogen in Mollisol. Pantnagar Journal Of Research: 2, 254-256, 2008

The utilization of inorganic or organic nitrogen by leguminous plants at various C/N ratios in the plant. I. Effect of glucose applied to the leaves on utilization of mineral nitrogen and urea by some leguminous plants. II. Amino acids as a nitrogen source for some leguminous plants. Annls Univ. Mariae Curie Sklodowska, 19E, 163-187; 499-535, 1965

Use of organic and inorganic solutes in tracing oil-field salt-water sources; delineation of recent versus historic sources. Proceedings of the Petroleum Hydrocarbons and Organic Chemicals in Ground Water: Prevention, Detection and Remediation Conference 2000(Pages 331-347, 1999

Urea as an organic nitrogen source for hydroponically grown tomatoes in comparison with inorganic nitrogen sources. Soil Science & Plant Nutrition 44(4): 609-615, 1998