Induced Resistance Mechanism in Plant and Its Importance in Agriculture

Anuj Kumar Rai

Krishi Vigya Kendra, Jharsuguda, OUAT, Odisha, Bhubaneswar, India.

Laxmi Priya Sahoo *

ICAR-Central Institute for Women in Agriculture, Bhubaneswar, India.

Monalisha Sahoo

Division of Seed Science and Technology, ICAR-IARI, New Delhi, India.

Tania Seth

ICAR-Central Institute for Women in Agriculture, Bhubaneswar, India.

Chakradhar Patra

Department of Seed Science and Technology, OUAT, Bhubaneswar, India.

*Author to whom correspondence should be addressed.


The search for a successful and efficient natural phenomenon of induced resistance in plants was prompted by the harmful effects that chemical pesticides and their degradation products had on the environment and human health. Ray was the first to identify plant resistance to diseases in 1901. When arabidopsis plants were injected with the pathogenic bacteria Pseudomonas fluorescens, which colonises roots, induced resistance was initially observed in these plants. There are two different kinds of induced resistance: induced biochemical defense and induced structural defense. Biochemical defense includes phytoalexins, PR-proteins, and secondary metabolites; structural defense includes cytoplasmic reactions, cell wall defense structure, and histological defense structure (development of cork layers, abscission layer, and tylose). Induced systemic resistance (ISR) and systemic acquired resistance (SAR) are the foundation of the induced resistance process. While the defense mechanism in ISR is mediated by jasmonic acid and ethylene and additionally triggered by non-pathognic rhizobacteria (Pseudomonas fluorescens), the defense mechanism in SAR is salicyclic mediated, namely alterations in gene expression. Plants can develop resistance to specific diseases by applying exogenous doses of 2, 6-dichloroisonicotonic acid and benzo-thiadiazole-7-carbothioic acid S-methyl ester (BTH). Induced resistance in plants, while still poorly understood, offers up new possibilities for plant protection and presents a viable strategy for sustainable agriculture and environmentally friendly disease control. It continues to be a problem for both basic and practical research.

Keywords: Induced resistance mechanism, acquired resistance, plant resistance, agriculture, pathogenesis related proteins (PRs), benzothiadiazole, Induced systemic resistance (ISR)

How to Cite

Rai, A. K., Sahoo, L. P., Sahoo, M., Seth, T., & Patra, C. (2024). Induced Resistance Mechanism in Plant and Its Importance in Agriculture. International Journal of Plant & Soil Science, 36(5), 1–22.


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