||90SR Uptake by 'Pinus ponderosa' and 'Pinus radiata' Seedlings Inoculated with Ectomycorrhizal Fungi.
Entry, J. A. ;
Rygiewicz, P. T. ;
Emmingham, W. H. ;
||Corvallis Environmental Research Lab., OR. ;Oregon State Univ., Corvallis. Dept. of Forest Science.
Strontium 90 ;
Pine trees ;
Radioecological concentration ;
Radionuclide migration ;
Reactor accidents ;
Nuclear explosions ;
Soil contamination ;
Pinus ponderosa ;
Pinus radiata ;
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||In the study, the authors inoculated P. ponderosa and P. radiata seedlings with one of five isolates of ectomycorrhizal fungi; inoculated and nonincoculated (control) seedlings were compared for their ability to remove Sr90 from an organic growth medium. Seedlings were grown for 3 months in a growth chamber in glass tubes containing 165 cu cm of sphagnum peat moss and perlite and, except in the controls, the fungal inoculum. After 3 months, 5978 Bq of Sr90 in 1 ml of sterile, distilled, deionized water was added. Seedlings were grown for an additional month and then harvested. P. ponderosa seedlings that were inoculated with ectomycorrhizal fungi accumulated 3.0-6.0% of the Sr90; bioconcentration ratios ranged from 98-162. Inoculated P. radiata seedlings accumulated 6.0-6.9% of the Sr90; bioconcentration ratios ranged from 88-133. Noninoculated P. ponderosa and P. radiata seedlings accumulated only 0.6 and 0.7% of the Sr90 and had bioconcentration ratios of 28 and 27, respectively.
||Pub. in Environmental Pollution 86, p201-206 1994. Prepared in cooperation with Oregon State Univ., Corvallis. Dept. of Forest Science.
|NTIS Title Notes
||Reprint: 90SR Uptake by 'Pinus ponderosa' and 'Pinus radiata' Seedlings Inoculated with Ectomycorrhizal Fungi.
||48D; 57C; 77G
||PC A02/MF A01