Subcellular distribution and translocation of radionuclides in plants

Journal Article · Wed Sep 01 00:00:00 EDT 1999 · Environmental Toxicology and Chemistry

DOI:https://doi.org/10.1897/1551-5028(1999)018<2023:SDATOR>2.3.CO;2· OSTI ID:20006631

Gouthu, S; Weginwar, R; Arie, Tsutomu; Ambe, Shizuko; Ozaki, Takuo; Enomoto, Shuichi; Ambe, Fumitoshi; Yamaguchi, Isamu

The subcellular distribution of radionuclides in Glycine max Merr. (soybean) and Cucumis sativus L. (cucumber) and translocation of plant absorbed radionuclides with growth in soybean were studied. More than 60% of cellular incorporated Rb{sup {minus}83}, Sr{sup {minus}85}, Mn{sup {minus}54}, Nb{sup {minus}95}, and Se{sup {minus}75} remained in the supernatant fraction; 55% and 20% of Cr{sup {minus}51} was bound to soybean and cucumber cell wall fractions, respectively; 70% or more of Be{sup {minus}7}, Y{sup {minus}88}, and Fe{sup {minus}59} was fixed in the chloroplast fraction; and approx. 10% of Sc{sup {minus}46}, Fe{sup {minus}59}, V{sup {minus}48}, and As were fixed in the mitochondrial fraction. Translocation of nuclides within the soybean plant at different stages of growth has been determined. Vanadium, Y{sup {minus}88}, Be{sup {minus}7}, Se{sup {minus}75}, Nb{sup {minus}95}, Sc{sup {minus}46}, Cr{sup {minus}51}, and Zr{sup {minus}88} were predominantly accumulated in the root. Although the total percentage of plant uptake of Sc{sup {minus}46}, Zr{sup {minus}88}, Nb{sup {minus}95}, Sc{sup {minus}46}, and Cr{sup {minus}51} was high, because of low mobility and translocation to shoot, their accumulation in the fruit fraction was negligible. The translocation of mobile nuclides in plants was demonstrated clearly by Rb{sup {minus}83}, Zn{sup {minus}65}, and Fe{sup {minus}59}. Data on the nuclide fraction mobilized from vegetative parts into edible parts was used to assess the percentage of accumulated radionuclides in plants that may reach humans through beans.

• Research Organization: Inst. of Physical and Chemical Research, Wako, Saitama (JP)
• OSTI ID: 20006631
• Journal Information: Environmental Toxicology and Chemistry, Vol. 18, Issue 9; Other Information: PBD: Sep 1999; ISSN 0730-7268
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
56 BIOLOGY AND MEDICINE
APPLIED STUDIES
SOILS
CONTAMINATION
ROOT ABSORPTION
RUBIDIUM 83
STRONTIUM 85
BERYLLIUM 7
SCANDIUM 46
YTTRIUM 88
CHROMIUM 51
MANGANESE 54
IRON 59
COBALT 56
ZINC 65
VANADIUM 48
ZIRCONIUM 88
NIOBIUM 95
ARSENIC 74
SELENIUM 75
SUBCELLULAR DISTRIBUTION
TRANSLOCATION
GLYCINE HISPIDA
CUCUMBERS