Improving blast disease tolerance in rice plants by enhancing antioxidant defense with tebuconazole and trifloxystrobin fungicides
Vol. 134 No. 1S-3 (2025), Special Issue: CBA 2025
Vol. 134 No. 1S-3 (2025)

Improving blast disease tolerance in rice plants by enhancing antioxidant defense with tebuconazole and trifloxystrobin fungicides

Special Issue: CBA 2025
https://doi.org/10.26459/hueunijns.v134i1S-3.7981
Published 2025-12-26
Mahfuza Ferdousi
Department of Plant Pathology, Faculty of Agriculture, Sher-e-Bangla Agricultural University, Dhaka, Bangladesh
Quang Dan Tran
Faculty of Biology, Agriculture and Environmental Science, The University of Danang – University of Science and Education, Da Nang city, Vietnam
F. M. Aminuzzaman
Department of Plant Pathology, Faculty of Agriculture, Sher-e-Bangla Agricultural University, Dhaka, Bangladesh
Md. Rafiqul Islam
Department of Plant Pathology, Faculty of Agriculture, Sher-e-Bangla Agricultural University, Dhaka, Bangladesh
M. Salahuddin M. Chowdhury
Department of Plant Pathology, Faculty of Agriculture, Sher-e-Bangla Agricultural University, Dhaka, Bangladesh
Amit Hasan
Jafrin Jahan Jerin
Department of Plant Pathology, Faculty of Agriculture, Sher-e-Bangla Agricultural University, Dhaka, Bangladesh
Bodrun Nessa Shompa
Department of Genetics and Plant Breeding, Faculty of Agriculture, Sher-e-Bangla Agricultural University, Dhaka, Bangladesh
Masayuki Fujita
Laboratory of Plant Stress Responses, Department of Applied Biological Science, Faculty of Agriculture, Kagawa University, Kagawa, Japan
Sayed Mohammad Mohsin*
Department of Plant Pathology, Faculty of Agriculture, Sher-e-Bangla Agricultural University, Dhaka, Bangladesh
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Keywords

Blast
Magnaporthe oryzae
Rice
Oxidative stress
Triazole
Strobilurin

How to Cite

1.
Ferdousi M, Tran QD, Aminuzzaman FM, Islam MR, Chowdhury MSM, Hasan A, Jerin JJ, Shompa BN, Fujita M, Mohsin SM. Improving blast disease tolerance in rice plants by enhancing antioxidant defense with tebuconazole and trifloxystrobin fungicides. hueuni-jns [Internet]. 2025Dec.26 [cited 2025Dec.27];134(1S-3):103-14. Available from: https://jos.hueuni.edu.vn/index.php/hujos-ns/article/view/7981
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Abstract

The fungus Magnaporthe oryzae (Mo) is the causal agent of rice blast disease, one of the most common and serious diseases affecting cultivated rice. Developing effective techniques to manage this disease is currently a crucial issue. Therefore, this study was designed to investigate the protective role of two fungicides, tebuconazole (TEB) and trifloxystrobin (TRI), in enhancing the tolerance of rice seedlings to blast disease. Ten-day-old hydroponically grown seedlings were inoculated with a Mo spore suspension, and after three days, fungicide was sprayed. In 15-day-old seedlings, numerous blast symptoms were observed, which hindered their growth. Compared with the control, Mo inoculation increased the malondialdehyde (MDA) and hydrogen peroxide (H2O2) content by 249.37 and 118.29%, respectively. In addition, Mo inoculation also increased electrolyte leakage (EL) in both shoots and roots and caused a reduction in leaf relative water and photosynthetic pigment contents. However, exogenous application of TEB and TRI reduced the content of MDA, H2O2, and EL. Fungicide application also increased Chl a, Chl b, Chl (a+b), and the carotenoid content by 28.16, 41.61, 33.67, and 26.29%, respectively. Consequently, increased photosynthetic pigment and relative water contents, along with increased rice seedling biomass and growth, were observed. These findings suggest that exogenous administration of TEB and TRI is a promising technique for improving blast tolerance in rice plants.

https://doi.org/10.26459/hueunijns.v134i1S-3.7981
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