Interactions between Pteris vittata L. genotypes and a polycyclic aromatic hydrocarbon (PAH)-degrading bacterium (Alcaligenes sp.) in arsenic uptake and PAH-dissipation. (November 2017)

• Record Type: Journal Article
• Authors: Sun, Lu; Zhu, Ganghui; Liao, Xiaoyong; Yan, Xiulan
• Is Part Of: Environmental pollution. Volume 230(2017)
• Page Start: 862
• Page End: 870
• Publication Date: 2017-11
• Subjects: Pteris vittata L. -- PAH-Degrading bacteria -- Arsenic -- PAH -- Genotype; Pollution -- Periodicals; Pollution -- Environmental aspects -- Periodicals; Environmental Pollution -- Periodicals; Pollution -- Périodiques; Pollution -- Aspect de l'environnement -- Périodiques; Pollution -- Effets physiologiques -- Périodiques; Pollution; Pollution -- Environmental aspects; Periodicals; Electronic journals; 363.73
• DOI: 10.1016/j.envpol.2017.07.037
• Languages: English
• ISSNs: 0269-7491

Abstract

Abstract: The effects of two Pteris vittata L. accessions and a polycyclic aromatic hydrocarbon (PAH)-degrading bacterium ( Alcaligenes sp.) on arsenic (As) uptake and phenanthrene dissipation were studied. The Alcaligenes sp. survived in the rhizosphere and improved soil As bioavailability with co-exposure. However, bacterial inoculation altered Pteris vittata L. stress tolerance, and substantially affected the As distribution in the rhizosphere of the two P. vittata accessions. Bacterial inoculation was beneficial to protect the Guangxi accession against the toxic effects, and significantly increased plant As and phenanthrene removal ratios by 27.8% and 2.89%, respectively. In contrast, As removal was reduced by 29.8% in the Hunan accession, when compared with corresponding non-inoculated treatments. We conclude that plant genotype selection is critically important for successful microorganism-assisted phytoremediation of soil co-contaminated with As and PAHs, and appropriate genotype selection may enhance remediation efficiency. Highlights: Plant genotype selection is important for successful microorganism-assisted phytoremediation. P. vittata accessions respond differently in stress tolerance with bacterial inoculation. Bacterial inoculation affects arsenic distribution in the soil. Guangxi accession with bacterial inoculation shows advantage in co-contamination remediation. Abstract : The plant genotype selection of Pteris vittata L. is important for optimizing plant-microorganism remediation of arsenic and PAH co-contamination.