Effects of Lead (Pb) and Benzo [a] Pyrene (B[a]P) and their Combined Exposure on Element Accumulation in Ryegrass (Lolium perenne L.)

• Published in: Bulletin of environmental contamination and toxicology Vol. 107; no. 5; pp. 955 - 960
• Main Authors: Li, Yue, Ning, Wantong, Zhang, Jiajiao, Xu, Sunan, Jiang, Lei, Chen, Zhonglin, Zhang, Lihong
• Format: Journal Article
• Language: English
• Published: New York Springer US 01.11.2021; Springer Nature B.V
• Subjects: Absorptivity; Aquatic Pollution; Chromium; Contamination; Copper; Earth and Environmental Science; Ecotoxicology; Environment; Environmental Chemistry; Environmental Health; Foliar applications; Lead; Leaves; Phytoremediation; Plant growth; Pollutants; Pollution; Principal components analysis; Roots; Seeds; Soil contamination; Soil pollution; Soil Science & Conservation; Spraying; Stress concentration; Toxicology; Waste Water Technology; Water Management; Water Pollution Control; Pb; Ryegrass; Combined exposure; B[a]P; Element accumulation
• ISSN: 0007-4861; 1432-0800
• DOI: 10.1007/s00128-021-03308-2

It was observed in this work that application of Pb and B[a]P co-exposure significantly ( p  < 0.05) reduced Pb content in ryegrass leaves and roots. The effect of Pb dominated the change of N, P, K, Cu, and Cr content in leaves and roots of ryegrass under joint stress of Pb and B[a]P. Principal component analysis showed that the foliar spraying of 400 μmol L −1 Pb and 80 μmol L −1 B[a]P had the best effect on improving the mineral element absorption under combined pollution. Ryegrass has strong resistance and certain Pb and B[a]P absorptive capacities, and can resist combined contamination by transferring N, P, K, Zn, Cu, and Cr contents between the overground and the root. These results highlight the potential capacity of ryegrass for use in the phytoremediation of soils contaminated by Pb and B[a]P.