Bioproducts derived from Bacillus stercoris isolate B.PNR1 and Streptomyces sp. isolate S.PNR29 for enhanced plant growth and disease control in tomato

ABSTRACT

This study aims to develop a wettable formulation bioproduct from antagonistic bacteria, Bacillus stercoris isolate B.PNR1, and Streptomyces sp. isolate S.PNR29, targeting Fusarium oxysporum f.sp. lycopersici (Fol), the cause of Fusarium wilt disease in tomatoes, while also promoting plant growth. The survivability of bacterial cells in the product was assessed over a 180-day period at 4°C and 28°C. The bioproducts demonstrated significant control of Fusarium wilt disease, with B. stercoris isolate B.PNR1 bioproducts exhibiting superior disease control percentages compared to Streptomyces sp. isolate S.PNR29 bioproducts and commercial alternatives. Additionally, the bioproducts positively influenced tomato seed germination and seedling growth, with Streptomyces sp. isolate S.PNR29 bioproducts showing better growth performance in terms of plant length, weight measurements, and seed germination. In conclusion, B. stercoris isolate B.PNR1 and Streptomyces sp. isolate S.PNR29 bioproducts emerge as promising biocontrol agents, showcasing sustained efficacy against Fol and significant positive impacts on plant growth, thereby highlighting their potential for sustainable agriculture practices.

KEYWORDS:

• Bacillus
• bioproduct
• Fusarium wilt
• Streptomyces
• tomato

Acknowledgements

This research project was financially supported by Mahasarakham University. The authors are grateful to the Faculty of Natural Resources and Agro-Industry at Kasetsart University Chalermphrakiat Sakon Nakhon Province Campus, as well as the Faculty of Science at Mahasarakham University, for their support and facilitation of this research.

Disclosure statement

No potential conflict of interest was reported by the author(s).

Additional information

Funding

This work was supported by Mahasarakham University [grant number 6707144].