Full TGIF Record # 4897
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Web URL(s):https://link.springer.com/article/10.1007%2FBF00011381
    Last checked: 09/25/2017
Publication Type:
Author(s):Morgan, M. A.; Jackson, W. A.
Author Affiliation:Jackson and Morgan: Department of Soil Science, North Carolina State University, Raleigh, North Carolina, USA; Morgan: Department of Soil Science, Faculty of Agriculture, University College, Glasnevin, Ireland
Title:Calcium and magnesium in ryegrass: Some differences in accumulation by roots and in translocation to shoots
Source:Plant and Soil. Vol. 44, No. 3, June 1976, p. 623-637.
# of Pages:15
Publishing Information:Dordrecht, Netherland: Martinus Nijhoff Publishers
Related Web URL:https://www.springerlink.com/content/r252334nw6n5k152/
    Last checked: 10/06/2017
    Notes: Abstract only
Keywords:TIC Keywords: Lolium perenne; Calcium; Magnesium
Abstract/Contents:"Thirty-day old intact ryegrass plants (Lolium perenne) were exposed to solutions of Ca, Mg, or Ca+Mg. Each ion was present at 0.25 mM and each solution was labeled with an appropriate radioisotope (Ca45 or Mg28). Plants were harvested at various times over a 12-hour period and analyzed for incorporation of the radioisotopes and for the total quantities of Ca and Mg present. Uptake of the exogenous ions was calculated on the assumption that uptake of both carrier and isotopic species occurred in proportion to their concentrations in the ambient solution. Steady state rates of exogenous ion uptake by roots and translocation to shoots were observed for both ions during the 212 hour period. During this time the rate of exogenous Ca accumulation in the shoots substantially exceeded that in the roots, and the presence of ambient Mg had relatively little influence on either rate. However, ambient Mg did decrease the exogenous Ca taken up in the 02 hour period. The steady state rate of exogenous Mg accumulation in roots and shoots exceeded that of exogenous Ca, and the presence of ambient Ca suppressed both exogenous Mg rates about equally. Significant net accumulation of Ca occurred in the root tissue during the 212 hour period whereas with Mg there was little net accumulation. A constant rate of depletion of endogenous Mg, which was restricted by presence of ambient Ca, was observed. Evidence from the observed 212 hour y-intercept values for root accumulation of the two ions suggests the possibility of specific adsorption sites for Ca."
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Morgan, M. A., and W. A. Jackson. 1976. Calcium and magnesium in ryegrass: Some differences in accumulation by roots and in translocation to shoots. Plant Soil. 44(3):p. 623-637.
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    Last checked: 09/25/2017
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