90sr uptake by 'pinus ponderosa' and 'pinus radiata' seedlings inoculated with ectomycorrhizal fungi

Technical Report · Sat Jan 01 04:00:00 EST 1994

OSTI ID:6643768

Entry, J A; Rygiewicz, P T; Emmingham, W H

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

Related Subjects

54 ENVIRONMENTAL SCIENCES
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
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NUCLEI
PINES
PINOPHYTA
PLANTS
RADIOECOLOGICAL CONCENTRATION
RADIOISOTOPES
SEEDLINGS
STRONTIUM 90
STRONTIUM ISOTOPES
TREES
UPTAKE
YEARS LIVING RADIOISOTOPES