The Control of Rice Blast Disease by the Novel Biofungicide Formulations

Chen, Wen-Ching; Chiou, Tai-Ying; Delgado, Aileen L.; Liao, Chien-Sen

doi:10.3390/su11123449

Cited by 24 publications

(20 citation statements)

References 17 publications

(28 reference statements)

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“…Then, fifth, tenth, fifteenth and twentiethday post-inoculation, the disease severity was scored using the (0-9) scale of IRRI (1996). The disease severity (DS) was assessed from each leaf with the following formula (Chen et al 2019):…”

Section: The Greenhouse Test Of Nano Cu-cu 2 O/alginate Against Rice mentioning

confidence: 99%

“…Rice blast is one of the severe diseases due to the Pyricularia oryza e fungus, which caused a heavily devastative production of rice worldwide (Anwar and Bhat, 2005;Chen et al 2019). In recent years, resistance to commercially available fungicides by phytopathogenic fungi has been increasing and becoming a serious problem and also conflicting with the public concern for fungicide residues on human health and environment (Elamawi and El-Shafey, 2013).…”

Section: Introductionmentioning

confidence: 99%

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Study on Antifungal Activity and Ability Against Rice Leaf Blast Disease of Nano Cu-Cu2O/Alginate

Ngoc¹,

Du²,

Tuan³

et al. 2020

IJARe

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Background: Rice blast disease due to Pyricularia oryzae fungus is one of the most destructive ones for rice, causing serious losses in yield and quality in Vietnam and other countries. Studying to develop new fungicides to control the fungal disease effectively is essential.Methods: The sodium alginate-stabilized Cu-Cu2O nanocolloidal solution with a size of about 4 nm and the Cu concentration of 5,000 mg/L was prepared by chemical method. The antifungal activity in vitro against P. oryzae and the ability to control the rice blast disease in the greenhouse of nano Cu-Cu2O/alginate were assessed.Result: The nano Cu-Cu2O/alginate exhibited highly fungal activity with the IC50 of 17.8 mg Cu /L. The disease severity of nano Cu-Cu2O/alginate treatments was in the range of 9.38 - 18.54% in comparison with 47.57% of the untreated control. The grain yield of rice plants treated with nano Cu-Cu2O/alginate increased compared with that of the untreated control, and the Cu content in polished rice was almost the same as that of usually cultured polished rice. Thus, the nano Cu-Cu2O/alginate can be used in agriculture as a plant fungicide, especially for rice cultivation.

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Section: The Greenhouse Test Of Nano Cu-cu 2 O/alginate Against Rice mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Study on Antifungal Activity and Ability Against Rice Leaf Blast Disease of Nano Cu-Cu2O/Alginate

Ngoc¹,

Du²,

Tuan³

et al. 2020

IJARe

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“…Among the various strategies applied to manage rice blast so far, a combination of leaves extracts of piper and plant growth-promoting rhizobacteria (PGPR), such as Azotobacter, Rhizobium, Bradyrhizobium, Sinorhizobium, Azorhizobium, Mesorhizobium, Allorhizobium, Azospirillum, Pseudomonas, Alcaligenes, Enterobacter, Stenotrophmonas, Acetobacter, Klebsiella, Xanthomonas, Erwinia, Caulobacter, Serratia, Arthrobacter, Micrococcus, Burkholderia, Flavobacterium, Chromobacterium, Agrobacterium, Hyphomicrobium, and Bacillus sp., etc., appears as a cost-effective, sustainable, and organic method [17]. It offers numerous advantages over chemical fungicides [18][19][20][21][22] as they are eco-friendly, biodegradable in nature, and safe to the environment, human health, and useful soil rhizobia [19].…”

Section: Introductionmentioning

confidence: 99%

“…It is distributed in various parts of the world, especially in Indonesia [24,25]. It grows in places with an altitude of 600 m above sea level [12,13,20]. Leaves of the plant are rich in flavonoids, alkaloids, phenols, and steroids.…”

Section: Introductionmentioning

confidence: 99%

“…The leaves contain volatile oil known as betle oil and a wide variety of bioactive compounds, such as alkaloids, terpenoids, steroids, flavonoids, polyphenols, tannins, saponins, hydroxychavicol, chavicol, piperbetol, chavibetol, piperol A, methylpiperbetol, and piperol [26][27][28][29][30]. The metabolites of piper plants serve as organic fertilizers that support plant nutrition and their antioxidant, insecticidal, and fungicidal properties help in plant disease management [20]. The secondary metabolites of piper inhibit the growth of plant pathogens by lysis of the cell wall, breaking of the peptide, glycosidic, etc.…”

Section: Introductionmentioning

confidence: 99%

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A Mixture of Piper Leaves Extracts and Rhizobacteria for Sustainable Plant Growth Promotion and Bio-Control of Blast Pathogen of Organic Bali Rice

et al. 2020

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Rice is a crop that is consumed as a staple food by the majority of the people in the world and therefore failure in rice crops, due to any reason, poses a severe threat of starvation. Rice blast, caused by a fungus Pyricularia oryzae, has been ranked among the most threatening plant diseases of rice and it is found wherever rice is grown. All of the rice blast disease management strategies employed so far have had limited success and rice blast has never been eliminated from rice fields. Hence, there is a need to look for the best remedy in terms of effectiveness, sustainability, and organic nature of the method. This study was aimed at determining the plant growth-promoting and fungicidal effects of a mixture of Piper caninum and Piper betle var. Nigra leaves extracts and rhizobacteria. Gas chromatography–mass spectrophotometry (GC-MS) analysis of a mixture of leaves extracts of these plants revealed the presence of new bioactive compounds such as alpha.-gurjunene, gamma.-terpinene, and ethyl 5-formyl 3-(2-ethoxycarbonyl) in a mixture of leaves extracts of P. caninum and P. betle var. Nigra. The mixture of these extracts reduced the intensity of blast disease, inhibited P. oryzae, and improved the growth, yield, and quality of Bali rice. All treatments comprising of different concentrations of a mixture of leaves extracts of P. caninum and P. betle var. Nigra plus rhizobacteria exhibited biocontrol and bioefficacy. However, a 2% concentration of a mixture of these leaves extracts with plant growth-promoting rhizobacteria (PGPR) exhibited potent inhibition of growth of P. oryzae, a significant reduction in the intensity of blast disease, and a maximum increase in growth, yield, and quality of Bali rice. In the 15th week, the intensity of blast disease decreased from 80.18% to 7.90%. The mixture of leaves extract + PGPR also improved the height of the plant, the number of tillers, number of leaves, number of grains per panicle, number of heads per panicle, and the full-grain weight per clump. Applications of various concentrations of a mixture of leaves extracts + PGPR resulted in improvement in the potential yield of rice, however, the application of 2% extracts + PGPR gave the highest potential yield of 5.61 tha−1 compared to the low yields in the control and other treatments. The high grain yield observed with the treatment was caused by the low intensity of blast disease. This treatment also strengthened the stem and prevented the drooping of the plant and improved the quality of rice grain.

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Farmers' attitude toward CRISPR/Cas9: The case of blast resistant rice

Ferrari

2021

Agribusiness

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New breeding techniques (NBTs) for genetically modified (GM) crops, such as CRISPR/Cas9, could represent a valuable solution for achieving a sustainable agricultural system. This study examines Italian farmers' attitudes toward CRISPR/ Cas9-modified blast-resistant rice in a hypothetical context. It is one of the first studies to investigate farmers' attitudes toward NBTs. Additionally, it explores the role of sociodemographics, farm characteristics, knowledge, perceived risks, and the locus of control (LOC) in shaping attitudes toward CRISPR/Cas9-modified rice. The results show that farmers are open to this innovation and will cultivate CRISPR/ Cas9-modified rice if it is available in the market. Moreover, we find subjective knowledge, practice experience, and low perceived risk in the agri-food business to be positively associated with attitudes toward CRISPR/Cas9-modified blastresistant rice. Notably, LOC is found to be inversely related to attitude, indicating that having an external LOC improves attitudes toward CRISPR/Cas9-modified rice. The findings suggest that farmers are generally favorable to the introduction of CRISPR/Cas9 technology; thus, a revision of the current

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The Control of Rice Blast Disease by the Novel Biofungicide Formulations

Cited by 24 publications

References 17 publications

Study on Antifungal Activity and Ability Against Rice Leaf Blast Disease of Nano Cu-Cu2O/Alginate

Study on Antifungal Activity and Ability Against Rice Leaf Blast Disease of Nano Cu-Cu2O/Alginate

A Mixture of Piper Leaves Extracts and Rhizobacteria for Sustainable Plant Growth Promotion and Bio-Control of Blast Pathogen of Organic Bali Rice

Farmers' attitude toward CRISPR/Cas9: The case of blast resistant rice

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