Micro-distribution of arsenic and polycyclic aromatic hydrocarbons and their interaction in Pteris vittata L.

doi:10.1016/j.envpol.2021.117250

	Micro-distribution of arsenic and polycyclic aromatic hydrocarbons and their interaction in Pteris vittata L.
	Liao, Xiao-Yong 2; Gong, Xue-Gang 2,3; Zhang, Li-Li 1; Cassidy, Daniel P.4
刊名	ENVIRONMENTAL POLLUTION
	2021-09-15
卷号	285 页码:9
关键词	PAHs As Co-contamination Phytoremediation Interaction Pteris vittata L
ISSN号	0269-7491
DOI	10.1016/j.envpol.2021.117250
通讯作者	Liao, Xiao-Yong(liaoxy@igsnrr.ac.cn)
英文摘要	Interactive effects of inorganic arsenic (As) species and polycyclic aromatic hydrocarbons (PAHs) on their uptake, accumulation and translocation in the hyperaccumulator Pteris vittata L. (P. vittata) were studied hydroponically. The presence of PAHs hindered As uptake and acropetal translocation by P. vittata, decreasing As concentrations by 29.8%-54.5% in pinnae, regardless of the initial As speciation. The inhibitive effect of PAHs was 1.6-8.7 times greater for arsenite [As(III)] than for arsenate [As(V)]. Similarly, inorganic As inhibited the uptake of fluorene (FLU) and benzo[a]pyrene (BaP) by P. vittata roots by 0.4%-21.7% and by 33.1%-69.7%, respectively. Interestingly, coexposure to As and PAHs slightly enhanced the translocation of PAHs by P. vittata with their concentrations increased 0.3 to 0.8 times in shoots, except for the As(III)+BaP treatment. The antagonistic interaction between As and PAHs uptake is likely caused by competitive inhibition or oxidative stress injury. By using synchrotron radiation micro X-ray fluorescence imaging, high concentrations of As were found distributed throughout the microstructures far from main vein of the pinnae when coexposed with PAHs, the opposite of what was observed with exposure to As only. PAHs could also significantly inhibit the accumulation and distribution of As in vascular bundles in rachis treated with As(III). The results of two-photon laser scanning confocal microscopy revealed that PAHs were mainly distributed in the vascular cylinder, epidermal cells, vascular bundles, epidermis and vein tissues, and this was independent of As speciation and treatment. This work offers new positive evidence for the interaction between As and PAHs in P. vittata, presents new information on the underlying mechanisms for interactions of As and PAHs affecting their uptake and translocation within P. vittata L., and provides direction for future research on the mechanisms of PAHs uptake by plants.
资助项目	National Key Research and Development Program of China[2017YFD0800900] ; Program of National Science and Technology Basic Works of the Ministry of Science and Technology of China[2015FY111300]
WOS关键词	CO-CONTAMINATED SOIL ; PLANT-CELL CULTURES ; ACROPETAL TRANSLOCATION ; AGRICULTURAL SOILS ; SEWAGE-SLUDGE ; HEAVY-METALS ; PHENANTHRENE ; PHYTOREMEDIATION ; PAHS ; ACCUMULATION
WOS研究方向	Environmental Sciences & Ecology
语种	英语
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:000685347100010
资助机构	National Key Research and Development Program of China ; Program of National Science and Technology Basic Works of the Ministry of Science and Technology of China
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/164619]
专题	中国科学院地理科学与资源研究所
通讯作者	Liao, Xiao-Yong
作者单位	1.Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201204, Peoples R China 2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, Beijing Key Lab Environm Damage Assessment & Reme, Beijing 100101, Peoples R China 3.Beijing Gen Res Inst Min & Met Technol Grp, Beijing 100160, Peoples R China 4.Western Michigan Univ, Dept Geol & Environm Sci, Kalamazoo, MI 49008 USA
推荐引用方式 GB/T 7714	Liao, Xiao-Yong,Gong, Xue-Gang,Zhang, Li-Li,et al. Micro-distribution of arsenic and polycyclic aromatic hydrocarbons and their interaction in Pteris vittata L.[J]. ENVIRONMENTAL POLLUTION,2021,285:9.
APA	Liao, Xiao-Yong,Gong, Xue-Gang,Zhang, Li-Li,&Cassidy, Daniel P..(2021).Micro-distribution of arsenic and polycyclic aromatic hydrocarbons and their interaction in Pteris vittata L..ENVIRONMENTAL POLLUTION,285,9.
MLA	Liao, Xiao-Yong,et al."Micro-distribution of arsenic and polycyclic aromatic hydrocarbons and their interaction in Pteris vittata L.".ENVIRONMENTAL POLLUTION 285(2021):9.