Metal-organic framework-based dual function nanosystems for aluminum detoxification and plant growth in acidic soil.

Autor: Liu YQ; College of Plant Science, Jilin University, 5333 Xi'an Street, Changchun 130062, PR China; College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, PR China., Zhao YY; College of Plant Science, Jilin University, 5333 Xi'an Street, Changchun 130062, PR China; College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, PR China., Xue AR; College of Plant Science, Jilin University, 5333 Xi'an Street, Changchun 130062, PR China., Song CG; College of Plant Science, Jilin University, 5333 Xi'an Street, Changchun 130062, PR China., Zhang MZ; College of Plant Science, Jilin University, 5333 Xi'an Street, Changchun 130062, PR China., Qin JC; College of Plant Science, Jilin University, 5333 Xi'an Street, Changchun 130062, PR China. Electronic address: qinjc@jlu.edu.cn., Yang YW; College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, PR China. Electronic address: ywyang@jlu.edu.cn.
Jazyk: angličtina
Zdroj: Journal of controlled release : official journal of the Controlled Release Society [J Control Release] 2024 Nov 18; Vol. 377, pp. 106-115. Date of Electronic Publication: 2024 Nov 18.
DOI: 10.1016/j.jconrel.2024.11.028
Abstrakt: Plants encounter various abiotic stresses throughout growth and development, with aluminum stress emerging as a major global agricultural challenge that hinders plant growth and limits crop yields in acidic soils. In this study, nanomaterials with dual functions, controlled release and adsorption, were constructed to alleviate aluminum toxicity. Specifically, two metal-organic frameworks, UiO-66 and ZIF-8, were used to load naphthylacetic acid and tryptophan, respectively. These two controlled-release systems were then combined with a chitosan-based matrix (NT@CS@UZ) to enable the regulated release of both compounds at distinct rates. Concurrently, the porous structure of these materials facilitates the adsorption of soluble aluminum in the plant rhizosphere. Results show that the acidic environment accelerates ZIF-8 degradation, triggering an early release of tryptophan under aluminum stress conditions. This early release promotes plant growth and alleviates stress damage. Naphthylacetic acid is subsequently released at a slower, sustained rate to stimulate root growth and further mitigate aluminum toxicity in roots. Additionally, NT@CS@UZ effectively adsorbs aluminum ions, limiting Al 3+ uptake by plants and creating a low-aluminum barrier to protect roots. These dual function nanomaterials significantly boost crop yield and enhance stress resilience, presenting new avenues for food security and sustainable agricultural practices.
Competing Interests: Declaration of competing interest The authors declare no conflict of interest.
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Databáze: MEDLINE
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