90sr uptake by 'pinus ponderosa' and 'pinus radiata' seedlings inoculated with ectomycorrhizal fungi
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.
- Research Organization:
- Environmental Protection Agency, Corvallis, OR (United States). Environmental Research Lab.
- OSTI ID:
- 6643768
- Report Number(s):
- PB-95-137295/XAB; EPA--600/J-94/467
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
540230* -- Environment
Terrestrial-- Radioactive Materials Monitoring & Transport-- (1990-)
ALKALINE EARTH ISOTOPES
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CONIFERS
ECOLOGICAL CONCENTRATION
EVEN-EVEN NUCLEI
INTERMEDIATE MASS NUCLEI
ISOTOPES
NUCLEI
PINES
PINOPHYTA
PLANTS
RADIOECOLOGICAL CONCENTRATION
RADIOISOTOPES
SEEDLINGS
STRONTIUM 90
STRONTIUM ISOTOPES
TREES
UPTAKE
YEARS LIVING RADIOISOTOPES