Patho-Ecological Distribution and Genetic Diversity of Fusarium oxysporum f. sp. cubense in Malbhog Banana Belts of Assam, India

Journal of Fungi, Journal Year: 2025, Volume and Issue: 11(3), P. 195 - 195

Published: March 4, 2025

Fusarium wilt, caused by oxysporum f. sp. cubense (Foc), is recognized as one of the most devastating diseases affecting banana cultivation worldwide. In India, Foc extensively affects Malbhog (AAB genomic group) production. this study, we isolated 25 isolates from wilt-affected plantations inIndia. A pathogenicity test confirmed identity these Foc, primary causative agent wilt in bananas. The morpho-cultural characterization showed large variations colony morphological features, intensity, and pattern pigmentation, chlamydospores, conidial size. molecular identification using Race1- Race4-specific primers established their Race1 with absence Tropical Race 4 Foc. For a more comprehensive understanding genetic diversity isolates, employed ISSR typing, which revealed five major clusters. About 96% within population indicated presence polymorphic loci individuals given evident results Nei’s diversity, Shannon’s information index, polymorphism content values, apart analysis variance (AMOVA). current findings provide significant insights toward detection variants and, consequently, deployment effective management practices to keep possible epidemic development disease under control along growing belts northeast India.

Language: Английский

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Secondary Metabolite-Induced Osmo-Protection and Host Antioxidant Systems in Banana in Waterlogged Sodic Soils

Horticulturae, Journal Year: 2025, Volume and Issue: 11(4), P. 416 - 416

Published: April 14, 2025

Banana is a commercially important crop widely cultivated in tropical and subtropical regions, but its cultivation the canal command basins challenged due to development of waterlogged sodic soils. The present study aimed induce sodicity tolerance through integration secondary metabolites plants during tissue culture organogenesis phase. Secondary-metabolite-treated were assessed for their performance soil areas Samesee block Lucknow district Uttar Pradesh, India. Metabolite-treated (MT) exhibited significantly better growth yield compared untreated control (UTC) plants. Key physiological enhancements MT included increased activities defense-related enzymes superoxide dismutase (SOD), phenylalanine ammonia lyase (PAL), peroxidase (POD), proline along with reduced Na+/K+ ratio. metabolic profile showed higher expression antioxidants, phenolic compounds, flavonoids. production such as trihydroxy methylene–di-oxyflavone, rush flavanone, rutin, anthocyanins, neodiosmin, arachidonic acid, trigalloyl-HHDP-glucose, which belongs subclasses flavonoids, sugar alcohols. Consequently, produced (20.85 kg per plant) UTC (8.35 kg) greater biomass. These results suggest that treatments using metabolite extracted from salt-tolerant bacteria can be used an effective strategy enhancing banana plants, contributing sustainable economic viability conditions.

Language: Английский

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Biocontrol Potential of a Native Trichoderma Collection Against Fusarium oxysporum f. sp. cubense Subtropical Race 4

Agriculture, Journal Year: 2024, Volume and Issue: 14(11), P. 2016 - 2016

Published: Nov. 8, 2024

The Canary Islands lead banana (Musa acuminata) production in the EU. Different fungal pathogens affect this crop subtropical areas, with Fusarium oxysporum f. sp. cubense race 4 (Foc-STR4) being most important Islands. With aim of developing environmentally sustainable techniques for disease control, study presents results evaluation antifungal capacity a native Trichoderma collection (12 species, 109 isolates) obtained from soils. demonstrate diversity biocontrol genes and vitro antagonistic potential different species/isolates against two Foc-STR4 strains plants Panama symptoms. virens (TF18), dominant species soils Islands, showed high to inhibit growth assays. atrobrunneum (TF01) mycoparasitism through spiral coil around hyphae pathogen. In addition, genome analysis T. (TF03) 69 putative biosynthetic gene clusters, notable presence trichothecene tri5 gene. Finally, our work demonstrates that crops are source adapted biological control agents or reduce incidence Foc-STR4.

Language: Английский

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Comparative Evaluation of In-vitro Bioefficacy of Microbial Bioagents and Novel Chemical Compounds against Fusarium oxysporum f.sp. Cubense

International Journal of Plant & Soil Science, Journal Year: 2024, Volume and Issue: 36(7), P. 1 - 9

Published: May 28, 2024

The Assam and North-eastern regions of India recognized as diverse repositories wild cultivated banana cultivars, confront a significant threat to varieties, Malbhog due Fusarium wilt disease caused by oxysporum f.sp. cubense (Foc). This study investigates the in-vitro bioefficacy indigenous bioagents new-generation chemical compounds against Foc develop an integrated module subsequently, in line with worldwide pursuit environmentally conscientious high-performance agricultural practices.In this study, four viz., Bacillus vallismortis, amyloliquefaciens, Trichoderma harzianum, Talaromyces pinophilus were screened revealed highest efficacy B. vallismortis 68.22 % mycelial growth inhibition followed amyloliquifaciens (60.05%) least was exhibited T.pinophilus (50.05%).To identify new generation compounds, namely Propiconazole, Azoxystrobin, Tebuconazole + Trifloxystrobin tested standard check Carbendazim wherein all chemicals significantly inhibited pathogen over control combination fungicide showing percent 94% at 0.1% concentration 0.1%. Our has identified potential microbial strains fungicides which can be further explored for development exploration bio-fungicide fungicide-based biointensive management menace malbhog region.

Language: Английский

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The use of combination plant growth promoting rhizobacteria to control chili leaf curl disease in the field

JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA, Journal Year: 2024, Volume and Issue: 24(2), P. 177 - 184

Published: June 13, 2024

Plant growth-promoting rhizobacteria (PGPR) is a promising technology for controlling viral diseases, including pepper yellow leaf curl disease (PYLCD) of chili caused by Begomovirus infection. The objectives this research were to investigate the effectiveness PGPR containing Pseudomonas fluorescens PF1 and Bacillus polymyxa BG25, as well their combination with other protective agents, control PYLCD under field conditions in an endemic region. treatments consisted single application (a mixture P. B. BG25), guano tea, endophytic fungus H5, neem oil; conventional pesticide that relies on synthetic chemical insecticide sprayed weekly; untreated plots. experiment was arranged randomized block design four replications. Treatment alone able delay onset 2.25 weeks, but it only slight reduction incidence. + tea endophyte H5 provided best results PYLCD. delayed 2.75 weeks 3.25 respectively, reduced incidence rates 52.72% 52.08%, respectively. These two treatment combinations gave performance plant growth yield.

Language: Английский

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