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Influx and efflux of amino acids from Zea mays L. roots and their implications for N nutrition and the rhizosphere

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Influx and efflux of amino acids from Zea mays L. roots and their implications for N nutrition and the rhizosphere. / Jones, Davey L.; Darrah, P.R. .
In: Plant and Soil, Vol. 155, 10.1993, p. 87-90.

Research output: Contribution to journal › Article › peer-review

HarvardHarvard

Jones, DL & Darrah, PR 1993, 'Influx and efflux of amino acids from Zea mays L. roots and their implications for N nutrition and the rhizosphere', Plant and Soil, vol. 155, pp. 87-90. https://doi.org/10.1007/BF00024990

APA

Jones, D. L., & Darrah, P. R. (1993). Influx and efflux of amino acids from Zea mays L. roots and their implications for N nutrition and the rhizosphere. Plant and Soil, 155, 87-90. https://doi.org/10.1007/BF00024990

CBE

Jones DL, Darrah PR. 1993. Influx and efflux of amino acids from Zea mays L. roots and their implications for N nutrition and the rhizosphere. Plant and Soil. 155:87-90. https://doi.org/10.1007/BF00024990

MLA

Jones, Davey L. and P.R. Darrah. "Influx and efflux of amino acids from Zea mays L. roots and their implications for N nutrition and the rhizosphere". Plant and Soil. 1993, 155. 87-90. https://doi.org/10.1007/BF00024990

VancouverVancouver

Jones DL, Darrah PR. Influx and efflux of amino acids from Zea mays L. roots and their implications for N nutrition and the rhizosphere. Plant and Soil. 1993 Oct;155:87-90. doi: 10.1007/BF00024990

Author

Jones, Davey L. ; Darrah, P.R. . / Influx and efflux of amino acids from Zea mays L. roots and their implications for N nutrition and the rhizosphere. In: Plant and Soil. 1993 ; Vol. 155. pp. 87-90.

RIS

TY - JOUR

T1 - Influx and efflux of amino acids from Zea mays L. roots and their implications for N nutrition and the rhizosphere

AU - Jones, Davey L.

AU - Darrah, P.R.

PY - 1993/10

Y1 - 1993/10

N2 - The aim of the study was to investigate the ability of Zea mays L. roots to regulate the amount of free amino acids present in the rhizosphere. The active uptake of amino acids was shown to conform to Michaelis-Menten kinetics. Comparison of amino acid-N and NO3-N kinetic parameters and soil solution concentrations showed that root uptake of free amino acids from soil may contribute significantly to a plant's N budget. The influx of amino acids also helps to minimize net C/N losses to the soil, and is therefore important in regulating the size of the rhizosphere microbial population. Experimental data and a computer simulation model of amino acid influx/efflux in a sterile solution culture, showed that roots were capable of re-sorping over 90% of the amino acids previously lost into solution as a result of passive diffusion.

AB - The aim of the study was to investigate the ability of Zea mays L. roots to regulate the amount of free amino acids present in the rhizosphere. The active uptake of amino acids was shown to conform to Michaelis-Menten kinetics. Comparison of amino acid-N and NO3-N kinetic parameters and soil solution concentrations showed that root uptake of free amino acids from soil may contribute significantly to a plant's N budget. The influx of amino acids also helps to minimize net C/N losses to the soil, and is therefore important in regulating the size of the rhizosphere microbial population. Experimental data and a computer simulation model of amino acid influx/efflux in a sterile solution culture, showed that roots were capable of re-sorping over 90% of the amino acids previously lost into solution as a result of passive diffusion.

KW - AMINO ACIDS

KW - MAIZE

KW - RHIZOSPHERE

KW - ROOT EXUDATES

U2 - 10.1007/BF00024990

DO - 10.1007/BF00024990

M3 - Article

VL - 155

SP - 87

EP - 90

JO - Plant and Soil

JF - Plant and Soil

SN - 0032-079X

ER -