Evaluation of Mercury Uptake and Distribution in Rice (Oryza sativa L.)

• Published in: Bulletin of environmental contamination and toxicology Vol. 100; no. 3; pp. 451 - 456
• Main Authors: Hang, Xiaoshuai, Gan, Fangqun, Chen, Yudong, Chen, Xiaoqin, Wang, Huoyan, Du, Changwen, Zhou, Jianmin
• Format: Journal Article
• Language: English
• Published: New York Springer US 01.03.2018; Springer Nature B.V
• Subjects: Agriculture; Aquatic Pollution; Bioavailability; Biological Availability; Cation exchange; cation exchange capacity; Cation exchanging; China; Contamination; Crop yield; Earth and Environmental Science; Ecotoxicology; Environment; Environmental Chemistry; Environmental Health; Grain; grain yield; leaves; Mercury; Mercury (metal); Mercury - analysis; Mining; Models, Theoretical; Oryza - chemistry; Oryza - growth & development; Oryza sativa; pH effects; Plants (botany); Pollution; Rice; Soil - chemistry; Soil contamination; Soil pH; Soil Pollutants - analysis; Soil pollution; Soil Science & Conservation; Soil treatment; Soils; Translocation; Waste Water Technology; Water Management; Water Pollution Control; China; Enrichment rate; L; Mercury; Rice tissues; Soil contamination; Oryza sativa L
• ISSN: 0007-4861; 1432-0800; 1432-0800
• DOI: 10.1007/s00128-017-2237-9

Mercury (Hg) contamination in soil-rice systems from industry, mining and agriculture has received increasing attention recently in China. Pot experiments were conducted to research the Hg accumulation capacity of rice under exogenous Hg in the soil and study the major soil factors affecting translocation of Hg from soil to plant. Soil treated with 2 mg kg −1 Hg decreased rice grain yield and inhibited the growth of rice plants. With increased Hg contamination of the rice, the enrichment rate of Hg was significantly higher in the rice grain than that in the stalk and leaf. Soil pH and cation exchange capacity are the key factors controlling Hg bioavailability in soils.