Exposure to Nitro-PAHs interfere with germination and early growth of Hordeum vulgare via oxidative stress.

Abstract:

:Nitrated polycyclic aromatic hydrocarbons (Nitro-PAHs) as important organic pollutants are ubiquitous in the atmospheric environment, agricultural soils and aquatic environments to pose a severe polluting risk. However, little is known about the mechanism of Nitro-PAHs genotoxicity in plants. We analyzed seeds germination, seedlings growth, and toxicity mechanism following 1-Nitropyrene treatment in Hordeum vulgare. Our results reveal that 1-NP treatment could be an inhibited agent on seeds germination and growth of roots and shoots. Additionally, the reduction of mitotic index and the increasing frequency of micronucleus suggest that 1-NP may pose a potential risk of genotoxicity in the plant. We further clarify that O2- and H2O2 radicals contribute to 1-NP stimulation induced oxidative damage. Our study provides insights into the role of Nitro-PAHs exposure on growth processing toxicity and genotoxicity in plant and provided a useful reference for the surveillance and risk management of Nitro-PAHs in environments.

journal_name

Ecotoxicol Environ Saf

authors

Yun Y,Liang L,Wei Y,Luo Z,Yuan F,Li G,Sang N

doi

10.1016/j.ecoenv.2019.05.032

subject

Has Abstract

pub_date

2019-09-30 00:00:00

pages

756-761

eissn

0147-6513

issn

1090-2414

pii

S0147-6513(19)30576-7

journal_volume

180

pub_type

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