Full TGIF Record # 34010
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Publication Type:
Author(s):Meharg, A. A.; Killham, K.
Author Affiliation:Department of Plant and Soil Science, University of Aberdeen, Meston Walk, Aberdeen, AB9 2UE, UK.
Title:Loss of exudates from the roots of perennial ryegrass inoculated with a range of micro-organisms
Source:Plant and Soil. Vol. 170, No. 2, March 1995, p. 345-349.
# of Pages:5
Publishing Information:Dordrecht, Netherlands: Kluwer Academic Publishers
Related Web URL:http://link.springer.com/article/10.1007/BF00010488
    Last checked: 10/14/2015
    Notes: Abstract only
Keywords:TIC Keywords: Lolium perenne; Root exudates; Soil microorganisms; Carbon cycle
Abstract/Contents:"To determine the effect of microbial metabolites on the release of root exudates from perennial ryegrass, seedlings were pulse labelled with [14C]-CO2 in the presence of a range of soil micro-organisms. Microbial inoculants were spatially separated from roots by Millipore membranes so that root infection did not occur. Using this technique, only microbial metabolites affected root exudation. The effect of microbial metabolites on carbon assimilation and distribution and root exudation was determined for 15 microbial species. Assimilation of a pulse label varied by over 3.5 fold, dependent on inoculant. Distribution of the label between roots and shoots also varied with inoculant, but the carbon pool that was most sensitive to inoculation was root exudation. In the absence of a microbial inoculant only 1% of assimilated label was exuded. Inoculation of the microcosms always caused an increase in exudation but the percentage exuded varied greatly, within the range of 3-34%.
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Meharg, A. A., and K. Killham. 1995. Loss of exudates from the roots of perennial ryegrass inoculated with a range of micro-organisms. Plant Soil. 170(2):p. 345-349.
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