Full TGIF Record # 72947
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Web URL(s):https://link.springer.com/article/10.1023/A%3A1004877214831
    Last checked: 09/27/2017
    Access conditions: Item is within a limited-access website
    Notes: Guide page
Publication Type:
i
Refereed
Author(s):Paynel, Florence; Murray, Philip J.; Cliquet, Jean Bernard
Author Affiliation:Paynel: UA INRA 950 de Physiologie et Biochimie Végétales, IRBA, Université de Caen, Cedex, France; Murray: Institute of Grassland and Environmental Research, North Wyke Research Station, Okehampton, Devon, UK; and Cliquet: Corresponding Author
Title:Root exudates: A pathway for short-term N transfer from clover and ryegrass
Source:Plant and Soil. Vol. 229, No. 2, February 2001, p. 235-243.
# of Pages:9
Publishing Information:Dordrecht, Netherlands: Kluwer Academic Publishers
Keywords:TIC Keywords: Root exudates; Nitrogen; Trifolium repens; Lolium perenne; Transport processes in soil systems; Nutrient transport; Roots; Exudation; Ammonia; Amino acids; Nitrogen fixation; Grasslands; Legumes; Ammonium nitrate; Transport (chemical)
Cultivar Names:Bravo
Abstract/Contents: "The short-term transfer of nitrogen (N) from legumes to grasses was investigated in two laboratory studies. One study was done in pots where the roots of white clover (Trifolium repens L.) and perennial ryegrass (Lolium perenne L.) were allowed to co-exist, and a second study was performed using a micro-lysimeter system designed to maintain nutrient flow from the clover to the grass, whilst removing direct contact between the root systems. The 15N-dilution technique was used to quantify the transfer of N between species. Levels of ammonia and amino acids were measured in root exudates. The amounts of N transferred were in the same order of magnitude in both the pot and micro-lysimeter experiments. In the micro-lysimeter experiment, 0.076 mg of N were transferred per plant from clover to ryegrass during the course of the experiment. Ammonium exudation was much higher than amino acid exudation. The most abundant amino acids in both clover and ryegrass root exudates were serine and glycine. However, there was no correlation between the free amino acid profile of root extracts and exudates for both plant species: Asparagine was the major amino acid in clover roots, while glutamine, glutamate and aspartate were the major amino acids in ryegrass roots. Comparison of exudates obtained from plants grown in non-sterile or axenic conditions provides evidence of plant origin of ammonium, serine and glycine."
Language:English
References:40
Note:Figures
Graphs
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Paynel, F., P. J. Murray, and J. B. Cliquet. 2001. Root exudates: A pathway for short-term N transfer from clover and ryegrass. Plant Soil. 229(2):p. 235-243.
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Web URL(s):
https://link.springer.com/article/10.1023/A%3A1004877214831
    Last checked: 09/27/2017
    Access conditions: Item is within a limited-access website
    Notes: Guide page
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MSU catalog number: SB 13 .P55
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