Eco-friendly Management of Blast (Magnaporthe oryzae) of Rice

Paudel, Jiwan; Belbase, Saroj; Kumar, Santosh; Bhushal, Rivesh; Yadav, Ramu; Yadav, Dipak

doi:10.20546/ijcmas.2019.809.302

Cited by 2 publications

(1 citation statement)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The disease is widespread in temperate rice-growing regions ( Yan and Talbot, 2016 ; Osés-Ruiz and Talbot, 2017 ) and is distributed worldwide in more than 85 South Asia, European, and American countries ( Martin-Urdiroz et al, 2016 ). Every year, approximately 10-30% of rice production is lost globally because of rice blast ( Talbot, 2003 ), which would be enough to feed up to 60 million people ( Paudel et al, 2019 ). Furthermore, it is predicted that climatic changes would increase (5-20%) the number of infections throughout Europe by 2030 ( Bregaglio et al, 2013 ).…”

Section: Introductionmentioning

confidence: 99%

Transcriptomic and Ultrastructural Analyses of Pyricularia Oryzae Treated With Fungicidal Peptaibol Analogs of Trichoderma Trichogin

et al. 2021

View full text Add to dashboard Cite

Eco-friendly analogs of Trichogin GA IV, a short peptaibol produced by Trichoderma longibrachiatum, were assayed against Pyricularia oryzae, the causal agent of rice blast disease. In vitro and in vivo screenings allowed us to identify six peptides able to reduce by about 70% rice blast symptoms. One of the most active peptides was selected for further studies. Microscopy analyses highlighted that the treated fungal spores could not germinate and the fluorescein-labeled peptide localized on the spore cell wall and in the agglutinated cytoplasm. Transcriptomic analysis was carried out on P. oryzae mycelium 3 h after the peptide treatment. We identified 1,410 differentially expressed genes, two-thirds of which upregulated. Among these, we found genes involved in oxidative stress response, detoxification, autophagic cell death, cell wall biogenesis, degradation and remodeling, melanin and fatty acid biosynthesis, and ion efflux transporters. Molecular data suggest that the trichogin analogs cause cell wall and membrane damages and induce autophagic cell death. Ultrastructure observations on treated conidia and hyphae confirmed the molecular data. In conclusion, these selected peptides seem to be promising alternative molecules for developing effective bio-pesticides able to control rice blast disease.

show abstract

Section: Introductionmentioning

confidence: 99%

Transcriptomic and Ultrastructural Analyses of Pyricularia Oryzae Treated With Fungicidal Peptaibol Analogs of Trichoderma Trichogin

et al. 2021

View full text Add to dashboard Cite

show abstract

Optimizing Nutrient Strategies for Rice Blast Disease Control and Paddy Yield Enhancement

Mustafa,

Habib,

Sahi

et al. 2024

Int. J. Phytopathol.

View full text Add to dashboard Cite

Rice blast disease, caused by Pyricularia oryzae, is one of the most destructive and devastating fungal diseases affecting rice crops. Traditionally, the disease is managed through host resistance and the application of fungicides; however, the latter approach is environmentally toxic and not always feasible. The objective of the present study was to evaluate the effectiveness of various nutrients, both individually and in combination, for disease control. Greenhouse experiments were conducted over two consecutive years, 2019 and 2020, to assess three nutrients and their combinations against rice blast disease. The nutrient combinations of potash (20g/L) and silicon (1g/L) resulted in disease incidence reductions of 79.38% and 78.76%, respectively, compared to the application of Nativo, which achieved slightly higher reductions of 82.38% and 80.76%. Among the zinc treatments and its combinations, zinc (2g/L) and silicon (1g/L) showed disease reductions of 72.39% and 73.4% in 2021 and 202, respectively. In 2019, the combination treatment of potash (20g/L) and silicon (1g/L) yielded the highest plant height (120.03 cm), number of tillers (23.01), panicle length (28.93 cm), and number of grains per panicle (128.19). In 2020, the same treatment resulted in the highest plant height (122.61 cm), number of tillers (17.23), panicle length (28.31 cm), and number of grains per panicle (122.61). The overall results of this study suggest that the application of alternative disease management strategies not only reduces the use of chemicals but also lowers the risk of residual effects on paddy grains, thereby enhancing the export potential of paddy.

show abstract

Eco-friendly Management of Blast (Magnaporthe oryzae) of Rice

Cited by 2 publications

References 15 publications

Transcriptomic and Ultrastructural Analyses of Pyricularia Oryzae Treated With Fungicidal Peptaibol Analogs of Trichoderma Trichogin

Transcriptomic and Ultrastructural Analyses of Pyricularia Oryzae Treated With Fungicidal Peptaibol Analogs of Trichoderma Trichogin

Optimizing Nutrient Strategies for Rice Blast Disease Control and Paddy Yield Enhancement

Contact Info

Product

Resources

About