NDLI: Immunomodulating melatonin-decorated silica nanoparticles suppress bacterial wilt (Ralstonia solanacearum) in tomato (Solanum lycopersicum L.) through fine-tuning of oxidative signaling and rhizosphere bacterial community

Content Provider	Springer Nature : BioMed Central
Author	Ijaz, Munazza Lv, Luqiong Ahmed, Temoor Noman, Muhammad Manan, Abdul Ijaz, Rafia Hafeez, Rahila Shahid, Muhammad Shafiq Wang, Daoze Ondrasek, Gabrijel Li, Bin
Abstract	Background Tomato (Solanum lycopersicum L.) production is severely threatened by bacterial wilt, caused by the phytopathogenic bacterium Ralstonia solanacearum. Recently, nano-enabled strategies have shown tremendous potential in crop disease management. Objectives This study investigates the efficacy of biogenic nanoformulations (BNFs), comprising biogenic silica nanoparticles (SiNPs) and melatonin (MT), in controlling bacterial wilt in tomato. Methods SiNPs were synthesized using Zizania latifolia leaves extract. Further, MT containing BNFs were synthesized through the one-pot approach. Nanomaterials were characterized using standard characterization techniques. Greenhouse disease assays were conducted to assess the impact of SiNPs and BNFs on tomato plant immunity and resistance to bacterial wilt. Results The SiNPs and BNFs exhibited a spherical morphology, with particle sizes ranging from 13.02 nm to 22.33 nm for the SiNPs and 17.63 nm to 21.79 nm for the BNFs, indicating a relatively uniform size distribution and consistent shape across both materials. Greenhouse experiments revealed that soil application of BNFs outperformed SiNPs, significantly enhancing plant immunity and reducing bacterial wilt incidence by 78.29% in tomato plants by maintaining oxidative stress homeostasis via increasing the activities of antioxidant enzymes such as superoxide dismutase (31.81%), peroxidase (32.9%), catalase (32.65%), and ascorbate peroxidase (47.37%) compared to untreated infected plants. Additionally, BNFs induced disease resistance by enhancing the production of salicylic acid and activating defense-related genes (e.g., SlPAL1, SlICS1, SlNPR1, SlEDS, SlPD4, and SlSARD1) involved in phytohormones signaling in infected tomato plants. High-throughput 16 S rRNA sequencing revealed that BNFs promoted growth of beneficial rhizosphere bacteria (Gemmatimonadaceae, Ramlibacter, Microscillaceae, Anaerolineaceae, Chloroplast and Phormidium) in both healthy and diseased plants, while suppressing R. solanacearum abundance in infected plants. Conclusion Overall, these findings suggest that BNFs offer a more promising and sustainable approach for managing bacterial wilt disease in tomato plants. Graphical Abstract
Related Links	https://jnanobiotechnology.biomedcentral.com/counter/pdf/10.1186/s12951-024-02910-w.pdf
Ending Page	22
Page Count	22
Starting Page	1
File Format	HTM / HTML
ISSN	14773155
DOI	10.1186/s12951-024-02910-w
Journal	Journal of Nanobiotechnology
Issue Number	1
Volume Number	22
Language	English
Publisher	BioMed Central
Publisher Date	2024-10-12
Access Restriction	Open
Subject Keyword	Biotechnology Nanotechnology Molecular Medicine Biogenic nanoformulations Microbiome Plant defense Systemic acquired resistance Stress signaling
Content Type	Text
Resource Type	Article
Subject	Bioengineering Pharmaceutical Science Medicine Applied Microbiology and Biotechnology Biomedical Engineering Molecular Medicine Nanoscience and Nanotechnology
Journal Impact Factor	10.6/2023
5-Year Journal Impact Factor	11.4/2023

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Immunomodulating melatonin-decorated silica nanoparticles suppress bacterial wilt (Ralstonia solanacearum) in tomato (Solanum lycopersicum L.) through fine-tuning of oxidative signaling and rhizosphere bacterial community

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