Pattern of zinc-65 incorporation into soybean seeds by root absorption, stem injection, and foliar application

Journal Article · · Journal of Agricultural and Food Chemistry; (USA)

DOI:https://doi.org/10.1021/jf00088a005· OSTI ID:7150981

Khan, A; Weaver, C M ^[1]

---

1. Purdue Univ., West Lafayette, IN (USA)

The pattern of {sup 65}Zn incorporation into soybean seeds of plants grown hydroponically and intrinsically labeled with {sup 65}Zn by root absorption, stem injection, and foliar application was studied. Stem injection resulted in the greatest (64.5% of dose) accumulation of {sup 65}Zn while incorporation of {sup 65}Zn through root absorption was the least (23.4%) and through foliar application was intermediate (37.5%). Regardless of the labeling techniques, approximately 40-45% of the seed {sup 65}Zn was associated with the subcellular organelles. The pattern of zinc incorporation did not change appreciably as a result of the labeling technique. The major portion of the soluble zinc was not associated with the major proteins (11S and 7S) of soybeans but either was free or was associated with very low molecular weight amino acids, peptides, or their complexes with phytic acid. Zinc in soybean seems to be ionically bound, and this association is affected by the pH of the extracting buffer.

• OSTI ID: 7150981
• Journal Information: Journal of Agricultural and Food Chemistry; (USA), Journal Name: Journal of Agricultural and Food Chemistry; (USA) Vol. 37:4; ISSN JAFCA; ISSN 0021-8561
• Country of Publication: United States
• Language: English

Related Subjects

553002* -- Agriculture & Food Technology-- Horticulture-- (1987-)
60 APPLIED LIFE SCIENCES
ABSORPTION
BETA DECAY RADIOISOTOPES
BETA-PLUS DECAY RADIOISOTOPES
BIOLOGICAL ACCUMULATION
BIOLOGICAL AVAILABILITY
DAYS LIVING RADIOISOTOPES
ELECTRON CAPTURE RADIOISOTOPES
EVEN-ODD NUCLEI
FOLIAR UPTAKE
FOOD
INTERMEDIATE MASS NUCLEI
ISOTOPE APPLICATIONS
ISOTOPES
LEAVES
METABOLISM
NUCLEI
PLANT STEMS
PLANTS
RADIOISOTOPES
ROOT ABSORPTION
SOYBEANS
TRACER TECHNIQUES
UPTAKE
VEGETABLES
ZINC 65
ZINC ISOTOPES