Comparative physiological and metabolomic analyses reveal that Fe₃O₄ and ZnO nanoparticles alleviate Cd toxicity in tobacco.

ABSTRACT:

Background

Heavy metals repress tobacco growth and quality, and engineered nanomaterials have been used for sustainable agriculture. However, the underlying mechanism of nanoparticle-mediated cadmium (Cd) toxicity in tobacco remains elusive.

Results

Herein, we investigated the effects of Fe₃O₄ and ZnO nanoparticles (NPs) on Cd stress in tobacco cultivar 'Yunyan 87' (Nicotiana tabacum). Cd severely repressed tobacco growth, whereas foliar spraying with Fe₃O₄ and ZnO NPs promoted plant growth, as indicated by enhancing plant height, root length, shoot and root fresh weight under Cd toxicity. Moreover, Fe₃O₄ and ZnO NPs increased, including Zn, K and Mn contents, in the roots and/or leaves and facilitated seedlin

SUBMITTER: Zou C 

PROVIDER: S-EPMC9235244 | biostudies-literature | 2022 Jun

REPOSITORIES: biostudies-literature