AS  Vol.12 No.1 , January 2021
Plant Growth Promoting Rhizobacteria as Biological Control Agent in Rice
Abstract: The use of agrochemical products to combat diseases in crops has adverse effects on the environment and human health. Plant growth promoting rhizobacterium (PGPR) has been increasingly proposed as an eco-friendly alternative in agriculture. PGPRs have beneficial effects not only in promoting plant growth but also have shown their potential as biological control agent, being able to inhibit plant pathogens. Here, we investigated the use of PGPR Paraburkholderia sp. strain SOS3 to provide disease protection in rice (Oryza sativa L.). The antagonistic activity of SOS3 against five fungal pathogens of rice was assessed by dual culture on plates and on rice seedlings. The results showed that on plate assay, SOS3 inhibits the growth of Curvularia lunata, Rhizoctonia solani, Pyricularia oryzae, Helminthosporium oryzae, and Fusarium moniliforme by 17.2%, 1.1%, 8.3%, 32.5%, and 35.4%, respectively. When inoculated on rice seeds, SOS3 promotes seed germination and significantly reduces disease symptoms in plants infected with R. solani. These results suggest that SOS3 has a great potential to be used in rice agriculture to combat the “Sheath Blight” disease.
Cite this paper: Kanjanasopa, D. , Aiedhet, W. , Thitithanakul, S. and Paungfoo-Lonhienne, C. (2021) Plant Growth Promoting Rhizobacteria as Biological Control Agent in Rice. Agricultural Sciences, 12, 1-8. doi: 10.4236/as.2021.121001.

[1]   Khush, G. (2003) Productivity Improvements in Rice. Nutrition Reviews, 61, S114-S116.

[2]   Saechow, S., Thammasittirong, A., Kittaakoop, P., Prachya, S. and Thammasittirong, S.N. (2018) Antagonistic Activity against Dirty Panicle Rice Fungal Pathogens and Plant Growth-Promoting Activity of Bacillus amyloliquefaciens BAS23. Journal of Microbiology and Biotechnology, 28, 1527-1535.

[3]   Verma, S.K., Kingsley, K.L., Bergen M.S., Kowalski, K.P. and White, J.F. (2018) Fungal Disease Prevention in Seedlings of Rice (Oryza sativa) and Other Grasses by Growth-Promoting Seed-Associated Endophytic Bacteria from Invasive Phragmites australis. Microorganisms, 6, 21.

[4]   Rosier, A., Medeiros, F.H. and Bais, H.P. (2018) Defining Plant Growth Promoting Rhizobacteria Molecular and Biochemical Networks in Beneficial Plant-Microbe Interactions. Plant and Soil, 428, 35-55.

[5]   Glick, B.R. (2012) Plant Growth-Promoting Bacteria: Mechanisms and Applications. Scientifica, 2012, Article ID: 963401.

[6]   Khan, N., Martínez-Hidalgo, P., Ice, T.A., Maymon, M., Humm, E.A., Nejat, N., Sanders, E.R., Kaplan, D. and Hirsch, A.M. (2018) Antifungal Activity of Bacillus Species against Fusarium and Analysis of the Potential Mechanisms Used in Biocontrol. Frontiers in Microbiology, 9, 2363.

[7]   Jiang, L., Jeong, J.C., Lee, J., Park, J.M., Yang, J., Lee, M.H., Choi, S.H., Kim, C.Y., Kim, D., Kim, S.W. and Lee, J. (2019) Potential of Pantoea dispersa as an Effective Biocontrol Agent for Black Rot in Sweet Potato. Scientific Reports, 9, Article No. 16354.

[8]   Paungfoo-Lonhienne, C., Watanarojanaporn, N. and Jaemsaeng, R. (2020) Plant Growth Promoting Rhizobacteria Enhance the Efficiency of the Combination of Organic and Chemical Fertilisers in Sugarcane. Open Journal of Ecology, 10, 440-444.

[9]   Paungfoo-Lonhienne, C., Redding, M., Pratt, C. and Wang, W. (2019) Plant Growth Promoting Rhizobacteria Increase the Efficiency of Fertilisers While Reducing Nitrogen Loss. Journal of Environmental Management, 233, 337-341.

[10]   Awla, H.K., Kadir, J., Othman, R., Rashid, T.S., Hamid, S. and Wong, M.Y. (2017) Plant Growth-Promoting Abilities and Biocontrol Efficacy of Streptomyces sp. UPMRS4 against Pyricularia oryzae. Biological Control, 112, 55-63.

[11]   Yellareddygari, S.K.R., Reddy, M.S., Kloepper, J.W., Lawrence, K.S. and Fadamiro, H. (2014) Rice Sheath Blight: A Review of Disease and Pathogen Management Approaches. Journal of Plant Pathology and Microbiology, 5, 241.