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Manganese Accumulation in Leaves and Radishes Grown in Manganese Supplemented Soils
Author(s) -
Garcia Kortni,
Douglas Hasani,
ClarkeLambert Shellyann,
Ruddock Karl,
Skeete Dereck
Publication year - 2015
Publication title -
the faseb journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.709
H-Index - 277
eISSN - 1530-6860
pISSN - 0892-6638
DOI - 10.1096/fasebj.29.1_supplement.903.2
Subject(s) - manganese , soil water , chemistry , trace element , environmental chemistry , horticulture , biology , ecology , organic chemistry
Manganese (Mn), a naturally occurring element essential in trace amounts for living organisms, is potentially toxic in high amounts. Some occupations including mining, welding and steel manufacturing can expose workers to high levels of airborne Mn, leading to a clinical condition known as Manganism, which has Parkinson like symptoms. Recent studies report excess dietary Mn can impair immune and reproductive functions in birds. Previously we showed Mn is present in some commercial fertilizers. We hypothesize plants grown in soils high in Mn will accumulate Mn in leaves and fruits. To test this we grew radishes in soils supplemented with fertilizers containing Mn. Samples of each fertilizers as well as radish leaves were digested in HN) 3 and analyzed for Mn using electrothermal vaporization with deuterium lamp background correction in an AA with a THGA graphite furnace. We found leaves accumulated Mn up to about 129.7 µg/gm tissue. Control leaves contained 66.50 µg/gm of Mn which was significantly less than the experimental groups. Soil supplemented with fertilizers containing Mn had higher concentrations of Mn than plant tissue. The highest concentration recorded in soil was 371.8 µg/gm, the lowest was 61.6 µg/gm. The study shows plants accumulate Mn from soil and use of fertilizers with high concentrations of Mn can increase the accumulations, possible creating a situation where animals and people ingesting the fruits and vegetables might be subjected to elevated Mn levels.