Improved methodology for the isolation of false smut pathogen Ustilaginoidea virens of rice

Bashyal, Bishnu Maya; Parmar, Pooja; Zaidi, Najam W.; Sunani, Sunil Kumar; Prakash, Ganesan; Aggarwal, Rashmi

doi:10.1007/s42360-020-00282-3

Cited by 16 publications

(22 citation statements)

References 7 publications

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“…concern in 2001 and 2002 in a commercial cultivar PR116 when environmental conditions were very favourable for the disease development. 4 In the state of Haryana, maximum infection was recorded on hybrids like PA 6444 and PA 6129 while in Punjab state, 10-20 per cent disease incidence was recorded in popular inbred rice varieties like PR 114, PR 116 and PAU 201. In the southern state of Tamil Nadu, the disease incidence varied from 5 to 85 per cent (Ladhalakshmi et al, 2012).…”

Section: Journal Of Agriculture and Ecology | Research Articlementioning

confidence: 99%

Economic analysis of different rice cultivars against major biotic stresses

Kasniya

Singh

2022

J. Agric. Ecol.

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The on-farm trials during kharif 2017 and 2018 were conducted to study the prevalence of major biotic stresses and benefit-cost ratio on popularly grown rice cultivars. The results revealed that non-significant variations were noticed between cultivars on the incidence of leaf folder damage, BPH & WBPH populations and severity of sheath blight disease in the stipulated period. However, the variation observed in these biotic stresses is due to the maturity period of cultivars. The long-duration cultivars result in more shelter from insects and disease due to the dense crop canopy and take more days to maturity as compared to medium-short duration cultivars. It was also found that cultivating long-duration cultivars viz; Pusa 44 and Pili Pusa gave the highest yield with a low benefit-cost ratio as compared to medium-short duration cultivars like PR 121, PR 122, and PR 126. Our study concluded that the cultivation of medium-short duration cultivars is more profitable due to the low cost of production, less use of chemical inputs and lesser requirement of irrigation water.

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Section: Journal Of Agriculture and Ecology | Research Articlementioning

confidence: 99%

Economic analysis of different rice cultivars against major biotic stresses

Kasniya

Singh

2022

J. Agric. Ecol.

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“…The pathogen responsible for stem rot was isolated from samples obtained from infected plants in farmers' fields. A standard tissue isolation procedure was followed as given by Bashyal et al [23]. The pathogenicity of the pathogen in the rice TN1 cultivar has been established through the application of Koch's postulates.…”

Section: Fungal Pathogen and Bio-control Agentsmentioning

confidence: 99%

Native Bioagents Influence the Soil Properties-Correlation of the Effect of Native Trichoderma, Pseudomonas and Bacillus on Soil Properties and the Resulting Reduction in Stem Rot Disease of Rice

V¹,

Maruthi²,

Gobinath³

et al. 2023

Preprint

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Soil is a crucial component for plant growth, as it provides water, nutrients, and mechanical support. Various factors, such as crop cultivation, microflora, nutrient addition, and water availability, significantly affect soil properties. Maintaining soil health is important, and one approach is the introduction of native organisms with multifaceted activities. In this study, the effects of four native microbes (Trichoderma asperellum strain TAIK 1, Bacillus cabrialesii strain BIK3, Pseudomonas putida strain PIK1, and Pseudomonas otitidis strain POPS1) and their consortia on soil health, plant growth, and the incidence of stem rot disease caused by Sclerotium oryzae in rice are evaluated. Upon bioagent treatment of soil through seed treatment or soil application, variations in chemical properties of the soil were observed, viz., pH, Electrical Conductivity (EC), Organic Carbon (OC), available Soil Nitrogen (SN), Soil Phosphorus (SP), Soil Potassium (SK), and soil enzymes (urease, acid and alkaline phosphatase, dehydrogenase), compared to untreated soils. The treated seeds with the consortia of four native bioagents resulted in a significant increase in plant height (39.16%), number of panicles (30.29%), and average grain yield (41.36%) over control plants. Under controlled conditions, the bioagents-treated plants showed a 69.37% reduction in stem rot disease. The findings of this study indicate a positive correlation between soil properties and plant growth as well as a highly negative association with stem rot disease severity. The results suggest that using native bioagents as a management strategy can control stem rot disease and enhance crop productivity while reducing reliance on chemical interventions. These findings provide valuable insights for the development of sustainable agricultural practices that promote soil health, plant growth, and disease management.

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“…During Kharif (2017) and (2018), Savitha et al, [20] conducted a survey among different regions of Karnataka in which the maximum disease severity was recorded in Udupi taluk of coastal areas having the severity of 22.99%. Baite et al, [21] conducted survey at Odisha among different varieties during kharif, in which the maximum incidence of 33.33% was observed at Pooja variety of rice. Also, Navarasu et al, [22] conducted survey in different regions of Tamil Nadu with the false smut incidence ranged from 1.36 to 36.36% and the disease severity ranged between 1.08 to 379.23%.…”

Section: Survey For Disease Assessment Of Rice False Smutmentioning

confidence: 99%

“…Large colonies are appeared after 7-14 days. The morphological characters were descrided as milky white or olive green colonies with flat or convex surface, fluffy mycelium, compact and leathery [21,25].…”

Section: Isolation Of the Pathogenmentioning

confidence: 99%

Survey and Isolation of Rice False Smut Pathogen Ustilaginoidea virens (Cooke) Takahashi

Soodamani,

Vaikuntavasan

2023

IJPSS

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Roving survey has been conducted during first quarter of 2023 at selected paddy fields of Cauvery Delta zone (Tanjore, Perambalur) and Western zone (Coimbatore, Erode) of Tamil Nadu to assess the Percent Disease Incidence for rice false smut disease in which the maximum disease incidence was recorded in Erode district (40%). The infected spikelet were observed with the characteristic symptoms where the individual rice grains turned into large, fluffy and velvety green balls, later these balls turns hard during maturity. The pathogen Ustilaginoidea virens was isolated from the infected smut balls in potato sucrose agar medium in which the fungus appears as small white colonies after seven days of isolation.

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Improved methodology for the isolation of false smut pathogen Ustilaginoidea virens of rice

Cited by 16 publications

References 7 publications

Economic analysis of different rice cultivars against major biotic stresses

Economic analysis of different rice cultivars against major biotic stresses

Native Bioagents Influence the Soil Properties-Correlation of the Effect of Native <em>Trichoderma</em>, <em>Pseudomonas</em> and <em>Bacillus</em> on Soil Properties and the Resulting Reduction in Stem Rot Disease of Rice

Survey and Isolation of Rice False Smut Pathogen Ustilaginoidea virens (Cooke) Takahashi

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