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.

在这项工作中观察到，Pb 和 B[a]P 共同暴露显着 ( p  < 0.05) 降低了黑麦草叶和根中的 Pb 含量。Pb和B[a]P联合胁迫下黑麦草叶片和根部N、P、K、Cu、Cr含量的变化主要受Pb的影响。主成分分析表明，叶面喷施400 μmol L ^-1 Pb和80 μmol L ^-1B[a]P在复合污染下对提高矿质元素吸收效果最好。黑麦草具有较强的抗性和一定的 Pb 和 B[a]P 吸收能力，可以通过在地上部和根部之间转移 N、P、K、Zn、Cu 和 Cr 含量来抵抗复合污染。这些结果突出了黑麦草在植物修复受 Pb 和 B[a]P 污染的土壤中的潜在能力。