Skip to main content
Log in

Antimicrobial activity of the biologically synthesized zinc oxide nanoparticles against important rice pathogens

  • Research Article
  • Published:
Physiology and Molecular Biology of Plants Aims and scope Submit manuscript

Abstract

Global rice production is seriously affected by many abiotic and biotic factors. Among the aggressive rice pathogens, Xanthomonas oryzae pv. oryzae (X. o. pv. oryzae), Bipolaris oryzae (B. oryzae) and Sphaerulina oryzina (S. oryzina) cause bacterial leaf blight, brown leaf spot and narrow brown leaf spot diseases, respectively. The objective of this study was to evaluate the efficacy of biogenic zinc oxide nanoparticles (ZnO NPs) as antimicrobial agent to control rice pathogens. This is the first report of antifungal activity evaluation of ZnO NPs against B. oryzae and S. oryzina. A pre-characterized bacterial strain Escherichia sp. SINT7 was bio-prospected for synthesis of green ZnO NPs. The NPs were confirmed by a characteristic peak measured at 360.96 nm through UV–Vis spectroscopy. Further, the NPs were characterized to elucidate the surface capping molecules, crystallite structure and morphology by various spectroscopic and imaging techniques, which confirmed the spherical shape of NPs with size ranging from 13.07 to 22.25 nm. In vitro studies against X. o. pv. oryzae pathogen depicted the substantial antibacterial activity (up to 25.7 mm inhibition zone at 20 μg/ml NPs concentration). Similarly, ZnO NPs reduced the mycelial growth of B. oryzae and S. oryzina up to 72.68 and 95.78%, respectively at 50 μg/ml concentration on potato dextrose agar plates, while the mycelial biomass reduction was found to be 64.66 and 68. 49% for B. oryzae and S. oryzina, respectively on potato dextrose broth media as compared to control without the addition of NPs. The green ZnO NPs also significantly reduced the fungal spore germination and a disintegration of fungal hyphae for both fungal strains was observed under the microscope as a result of NPs treatment. Hence, it was concluded that biologically synthesized ZnO NPs are potential antimicrobials and could be compared in greenhouse pathogenicity assays with commercial pesticides to control rice pathogens.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Fig. 1
Fig. 2
Fig. 3
Fig. 4
Fig. 5
Fig. 6
Fig. 7
Fig. 8

Similar content being viewed by others

Data availability

The data of this research can be obtained upon request to the corresponding author.

References

Download references

Acknowledgements

We acknowledge the contributions of Mr. Awais Maqsood for his help in data analysis and proof-reading of this manuscript

Funding

We are highly thankful to the partial financial support from the annual departmental research grant allocated to the Department of Bioinformatics by Biotechnology, Government College University, Faisalabad, Pakistan. The authors also acknowledge the PhosAgro/UNESCO/IUPAC/GCUF research grant # 82 for financial support.

Author information

Authors and Affiliations

Authors

Contributions

Conceptualization: M Shahid. Methodology: M Shahid, AI Cheema and A Abbas. Formal analysis and investigation: AI Cheema, A Abbas, T Ahmed, M Noman. Writing—original draft preparation: AI Cheema, T Ahmed, M Zubair, A Abbas and M Noman. Writing—review and editing: M Shahid, A Abbas, and M Zubair. Funding acquisition: M Shahid. Supervision: M Shahid.

Corresponding author

Correspondence to Muhammad Shahid.

Ethics declarations

Conflict of interests

The authors declare no competing interests.

Additional information

Publisher's Note

Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.

In current study, green zinc oxide nanoparticles were used as antimicrobial agents against three major rice pathogens, Xanthomonas oryzae pv. oryzae (Xoo), Bipolaris oryzae and Sphaerulina oryzina causing bacterial leaf blight, brown leaf spot and narrow brown leaf spot diseases, respectively. Although, ZnONPs have been tested earlier for some of the rice pathogens including Xoo; however, this is the first report of ZnONPs evaluation as antifungal agents against Bipolaris oryzae and Sphaerulina oryzina.

Supplementary Information

Below is the link to the electronic supplementary material.

Supplementary file1 (DOCX 17 KB)

Rights and permissions

Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Cheema, A.I., Ahmed, T., Abbas, A. et al. Antimicrobial activity of the biologically synthesized zinc oxide nanoparticles against important rice pathogens. Physiol Mol Biol Plants 28, 1955–1967 (2022). https://doi.org/10.1007/s12298-022-01251-y

Download citation

  • Received:

  • Revised:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s12298-022-01251-y

Keywords

Navigation