Issue 4, 2024

Phytotoxicity of metal–organic framework MOF-74(Co) nanoparticles to pea seedlings

Abstract

Metal–organic framework (MOF) materials have unique structure and fantastic properties for wide-ranging applications. Pilot studies highlighted the toxicity and potential threats of MOF materials to the environment. In this study, we revealed the phytotoxicity of MOF-74(Co) nanoparticles (NPs) and their inhibitory effects on the photosynthesis of pea seedlings (Pisum sativum L.). MOF-74(Co) NPs have limited influences on the germination of pea seeds, but distinct environmental effects of MOF-74(Co) NPs were found in pea seedlings. The root length of pea seedlings, fresh weight and dry weight decreased by 50.0%, 29.2% and 36.4%, respectively, compared with the control group, when the material concentration was greater than 100 mg L−1. The net photosynthetic rate decreased by 48% and the intercellular CO2 concentration increased by 183% upon exposure to MOF-74(Co) NPs. Mechanistically, MOF-74(Co) exposure led to Co uptake in pea seedlings; the increases were 223% for the root, 267% for the stem and 6562% for the leaves, respectively, when the MOF-74(Co) NP concentration was 10 mg L−1. The released Co ions from MOF-74(Co) NPs caused oxidative damage to leaves and induced damage to the acceptor side of photosynthesis system II. Our results indicated that the environmental toxicity of MOF materials was largely regulated by the metal centers. MOF materials with nontoxic metal elements are desirable for future applications.

Graphical abstract: Phytotoxicity of metal–organic framework MOF-74(Co) nanoparticles to pea seedlings

Supplementary files

Article information

Article type
Paper
Submitted
10 nov 2023
Accepted
08 fev 2024
First published
22 fev 2024

Environ. Sci.: Processes Impacts, 2024,26, 710-720

Phytotoxicity of metal–organic framework MOF-74(Co) nanoparticles to pea seedlings

R. Hu, H. Huang, H. Chen, J. Zhang, Q. Zhong, X. Wu and S. Yang, Environ. Sci.: Processes Impacts, 2024, 26, 710 DOI: 10.1039/D3EM00503H

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements