BioControl Agents - Antagonistic Magicians against Soil Borne Pathogens: A Review

Author: Ankit Kumar Upadhyay, Sai Ram Bandi and Peddagoud Devi Maruthi

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Abstract

Biological control agents are the core to Integrated Pest and Disease Management (IPDM) strategy with a defined objective of sustainable agriculture. With the current food production strategy involving lots of chemical input raised the cost of produce and threat to the environment leading to the foundation of biological management practices. Various groups of bioControl agents viz. Bacillus spp., Pseudomonas spp., Streptomyces spp., Trichoderma spp.etc has been shown to have profound effect against soil-borne pathogen being highly race specific. Their efficacy can be explored in one or the other way like showing Hyperparasitism, Antibiotics (Plipastatins), Induced Systemic Resistance (ISR) like β-1,3 glucanase by Bacillus mycoides. Several known secondary metabolites like Gliotoxin in case of Trichoderma spp., 2,4-diacetylphloroglucinol (DAPG) in case of Pseudomonas spp. are found to be antagonistic against a wide range of soil borne pathogen viz. Rhizoctonia spp., Verticillium spp.

Keywords

Pseudomonas spp., Trichoderma spp., ISR, SAR, Secondary metabolite, Soil Borne Pathogen

Conclusion

BioControl agents are the most important and efficient source to tackle the diseases caused by soil borne pathogens. Since control of soil borne pathogens is not possible by traditional chemical methods, using bioControl agents are only hope rather than going for other management practices such as soil solarization. BioControl agents use various mechanisms to suppress the growth of bioControl agents which include, induction of CAMP’S AND MAMP’S which stimulate the resistance against pathogens, competing for food and nutrients against pathogens, parasitic nature upon the host pathogen and obtain nutrients from it, production of various secondary metabolites which affect the growth and development of pathogens. Since the resistance of soil borne pathogens against various mechanisms performed by bioControl agents are less reported, use of bioControl agents can be a potential tool to control soil borne pathogens for long term. In agro-ecology point of view, use of chemical methods affe

References

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How to cite this article

Upadhyay, A.K., Bandi, S.R. and Maruthi, P.D. (2021). BioControl Agents - Antagonistic Magicians against soil borne pathogens: A Review. Biological Forum – An International Journal, 13(1): 232-242.