Publications by authors named "Bishnu Maya Bashyal"

Article Synopsis
  • In early 2021, foliar blight symptoms were found on Chinese cabbage at a research farm in Tripura, India, affecting 5-10% of the plants, characterized by grayish water-soaked lesions.
  • Samples from the infected plants were treated, cultured, and examined microscopically, revealing mycelium with distinct characteristics attributed to the fungus Rhizoctonia solani.
  • Genetic sequencing of the isolates confirmed their identity as R. solani, showing high similarity with existing sequences in GenBank, and the isolates were deposited in the Indian Type Culture Collection.
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The investigation is the first report on genome-wide identification and characterization of NBLRR genes in pearl millet. We have shown the role of gene loss and purifying selection in the divergence of NBLRRs in Poaceae lineage and candidate CaNBLRR genes for resistance to Magnaporthe grisea infection. Plants have evolved multiple integral mechanisms to counteract the pathogens' infection, among which plant immunity through NBLRR (nucleotide-binding site, leucine-rich repeat) genes is at the forefront.

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Article Synopsis
  • - Sheath blight and bakanae disease are significant rice diseases that reduce crop yield and are becoming resistant to old fungicides, illustrating the need for new, low-toxicity fungicides.
  • - Researchers synthesized 20 new isoxazole derivatives which showed promising fungicidal activity against the fungi Rhizoctonia solani and Fusarium fujikuroi, with two compounds demonstrating the highest effectiveness at low doses.
  • - Structural activity relationship (QSAR) analysis and molecular docking studies confirm these new compounds may replace existing fungicides by targeting key enzymes, making them critical candidates for future agricultural applications.
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Wheat, a staple food crop for 35% of the global population, faces a threat from Helminthosporium leaf blight (HLB), a complex of spot blotch () and tan spot () diseases under warm and humid conditions. However, in Indian conditions, the knowledge of existing pathogen populations associated with the HLB complex is limited and largely dominated by only (spot blotch). To address this, diseased samples were collected from all six wheat growing zones during 2020-2022.

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Article Synopsis
  • - Maydis leaf blight, caused by race O fungus, severely affects maize, and this study investigates the defensive genetic responses in a resistant maize genotype (SC-7) compared to a susceptible one (CM-119) through transcriptome profiling at 48 hours post inoculation.
  • - The research revealed that SC-7 exhibited a more extensive set of differentially expressed genes (DEGs), with 1413 DEGs identified, primarily enhancing its defense mechanisms, while CM-119 had 2902 DEGs, indicating a less effective response to the infection.
  • - Key findings highlight that SC-7's defense system relies heavily on oxidation-reduction and calcium signaling processes, showcasing various fitness-related genes that could be important
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Bakanae disease caused by is an emerging disease of rice causing losses in all rice-growing regions around the world. A BCF population was developed by backcrossing the recurrent parent Pusa Basmati 1121 (PB1121) with the recombinant inbred line RIL28, which harbors a major quantitative trait locus (QTL) governing resistance to bakanae, . MassARRAY-based single-nucleotide polymorphism (SNP) assays targeting the genomic region of helped in fine mapping the QTL to a region of 130 kb between the SNP markers and using 24 recombinants.

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Fusarium wilt is a major threat to lentil production in India and worldwide. The presence of evolving virulent races has imposed the necessity of reliable management practices including breeding for resistance using unexplored germplasms. The magnitude of resistance by the plant is determined by rapid recognition of the pathogen and induction of defence genes.

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The bakanae disease of rice, or foolish seedling disease, is a well-known pathogen infecting rice hosts. Several studies have characterized isolates collected from distant geographical regions and within similar geographical areas for secondary metabolite production, population structure, and diversity analysis, but none have attempted to characterize the isolates for virulence in a differential set of rice genotypes. Based on the disease response, a set of five rice genotypes with differing resistance levels were selected as a differential set for further characterization of the pathogen.

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is the fungal pathogen causing an emerging false smut disease that affects crop yield as well as deteriorates quality of the grains by producing mycotoxins. A high quality genome of isolate UV2_4G was sequenced using Nanopore and Illumina HiSeq 2,000 sequencing platforms. The total assembled genome of Indian isolate UV2_4G was 35.

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Article Synopsis
  • - Spot blotch disease in wheat, caused by the fungus *Boerma*, is increasingly affecting crops in South Asia, prompting a study that sequenced and analyzed a virulent isolate known as BS112.
  • - Researchers identified key secreted proteins and genes related to virulence in the genome of BS112, revealing a highly homologous gene with other known strains and confirming its presence across 39 tested isolates.
  • - The study assessed the interaction of the identified gene with 13 wheat genotypes, finding that positive genotypes exhibited more severe disease symptoms, which can aid in understanding and managing spot blotch disease in wheat.
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Bakanae disease is an emerging problem for the Basmati rice cultivation in India. Forty-seven endophytes isolated earlier along with three Talaromyces flavus isolates evaluated against Fusaium fujikuroi [Nirenberg] bakanae pathogen [isolate F250] through dual culture and enzymatic assays. Out of 50 isolates, 6 isolates namely, Tf, Tf, Tf, Fusarium equiseti, Fusarium sp.

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Sheath blight caused by necrotrophic fungus Kühn is one of the most serious diseases of rice. Use of high yielding semi dwarf cultivars with dense planting and high dose of nitrogenous fertilizers accentuates the incidence of sheath blight in rice. Its diverse host range and ability to remain dormant under unfavorable conditions make the pathogen more difficult to manage.

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is pathogen of maize which causes maydis leaf blight disease. In India major losses occur due to the race "O" pathogen, whereas in other parts of the world, major losses are due to the race "T" pathogen. In the present study, we conducted an transcriptomics study of the race "O" pathogen after infection on non-CMS maize resistant and susceptible genotypes by mRNA sequencing to understand the molecular basis of pathogenicity for better management of the pathogen.

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Cytokinin glucosyltransferases (CGTs) are key enzymes of plants for regulating the level and function of cytokinins. In a genomic identification of rice CGTs, 41 genes with the plant secondary product glycosyltransferases (PSPG) motif of 44-amino-acid consensus sequence characteristic of plant uridine diphosphate (UDP)-glycosyltransferases (UGTs) were identified. In-silico physicochemical characterisation revealed that, though the CGTs belong to the same subfamily, they display varying molecular weights, ranging from 19.

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is a potential biological control agent effective against various plant pathogens. Several reports are available on the mycoparastism and antibiosis mechanisms of against plant pathogenic fungi, whereas a few states induced resistance. The potential induced defense component of (Cg-2) was evaluated against early blight disease of tomato ( and further, global RNA sequencing was performed to gain deep insight into its mechanism.

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biopriming enhances rice growth in drought-stressed soils by triggering various plant metabolic pathways related to antioxidative defense, secondary metabolites, and hormonal upregulation. In the present study, transcriptomic analysis of rice cultivar IR64 bioprimed with under drought stress was carried out in comparison with drought-stressed samples using next-generation sequencing techniques. Out of the 2,506 significant ( < 0.

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Kunze is recognized as a potential biocontrol fungus against spot blotch of wheat caused by . Its molecular mechanism of biocontrol activity and the biosynthetic pathways involved have not been yet elucidated. Here, global transcriptome profiling of strain Cg2 during interaction with isolate BS112 using RNA-seq was performed in order to gain insights into the potential mechanisms of antagonism.

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