Publications by authors named "Tapan Mondal"

A new fluorescent ratiometric switch (BOHB) was developed for swift and selective detection of cyanide ions in aqueous media without any interference from other competitive anions. Upon gradual addition of cyanide ions into the probe solution, a prominent fluorescence color change from yellow to cyan was observed under a UV chamber. The fluorescence changes thus observed were ratiometric, and the detection limit of this new probe was found to be (22.

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Currently, there are many uses of metal complexes, especially in the fields of medicinal chemistry and catalysis. Thus, fabrication of new complexes which perform as a catalyst and chemotherapeutic drug is always a beneficial addition to the literature. Herein, we report three heterocyclic thiosemicarbazone-based Pd(II) complexes [Pd(HL1)Cl] (C1), [Pd(L2)(PPh)] (C2) and [Pd(L3)(PPh)]Cl (C3) having coligands Cl and PPh.

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Multisystem Inflammatory Syndrome in Children (MIS-C) is a potentially life-threatening complication of COVID-19. The pathophysiological mechanisms leading to severe disease are poorly understood. This study leveraged clinical samples from a well-characterized cohort of children hospitalized with COVID-19 or MIS-C to compare immune-mediated biomarkers.

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In this work, a novel organic receptor, CPI [()-3-(4-(9-carbazol-9-yl)phenyl)-2-(1-benzo[]imidazol-2-yl)acrylonitrile], was rationally designed and successfully fabricated for selective and sole recognition of CN ions over other competitive anions through an obvious chromogenic and ratiometric emission change in DMSO. The distinct and prominent color change upon the addition of CN can be attributed to the typical ICT process, which is induced by the deprotonation of acidic NH protons in the imidazole moiety. The sensor displayed strong solvatochromic effects in commonly used organic solvents such as -hexane, toluene, diethyl ether, DCM, THF, DMF and DMSO.

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In this work, a novel fluorescent ratiometric switch, 8-((6-(1-benzo[]imidazol-2-yl)pyridin-2-yl)methoxy)quinoline (BIPQ), has been introduced for sensing an organophosphorus (OP) chemical vapor threat, diethyl chlorophosphate (DCP), the low-toxic mimic of the real nerve agent sarin (GB). BIPQ is efficient at detecting DCP in both solution and gaseous phase and has potential practical application with high sensitivity and selectivity. The probe shows significant ratiometric emission in the presence of DCP along with a distinct color change from blue to cyan under UV light.

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Role of salinity responsive metabolites of rice and its wild species has been discussed. Salinity stress is one of the important environmental stresses that severely affects rice productivity. Although, several vital physio-biochemical and molecular responses have been activated in rice under salinity stress which were well described in literatures, the mechanistic role of salt stress and microbes-induced metabolites to overcome salt stress in rice are less studied.

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Crop wild relatives (CWRs) are vital sources of variation for genetic improvement, but their populations are few in genebanks, eroded in natural habitats and inadequately characterized. With a view to explore genetic diversity in CWRs of AA genome rice (Oryza sativa L.) species in India, we analyzed 96 accessions of 10 Oryza species by using 17 quantitative traits and 45 microsatellite markers.

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Sustainable food production is necessary to meet the demand of the incessantly growing human population. Phytopathogens pose a major constraint in food production, and the use of conventional fungicides to manage them is under the purview of criticism due to their numerous setbacks. In the present study, essential oil-grafted copper nanoparticles (EGC) were generated, characterized, and evaluated against the maize fungal pathogens, f.

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Salinity is an imbalanced concentration of mineral salts in the soil or water that causes yield loss in salt-sensitive crops. Rice plant is vulnerable to soil salinity stress at seedling and reproductive stages. Different non-coding RNAs (ncRNAs) post-transcriptionally regulate different sets of genes during different developmental stages under varying salinity tolerance levels.

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A diversified biphenyl thiosemicarbazide based chemosensor (HBMC) has been fabricated and reported for the specific detection of Cd in a MeOH : HO (4 : 1) solution. We observed a chromogenic change from colorless to light yellow colour, and it showed a "turn-on" fluorogenic change from non fluorescent to blooming cyan colour. In fluorometric titration a sharp "turn-on" emission for Cd was observed with a ∼16 fold increase in fluorescence intensity value at 496 nm by incremental addition of Cd ions in the MeOH : HO (4 : 1) solution.

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Soil salinity stress is one of the major bottlenecks for crop production. Although, allantoin is known to be involved in nitrogen metabolism in plants, yet several reports in recent time indicate its involvement in various abiotic stress responses including salinity stress. However, the detail mechanism of allantoin involvement in salinity stress tolerance in plants is not studied well.

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Article Synopsis
  • - A new fluorescent switch called PCEH has been developed that selectively detects aluminum ions (Al) in a solution at physiological pH, showing significant brightness when Al is added.
  • - The switch demonstrates reversibility, as adding fluoride (F) can deplete the signal generated by the PCEH-Al interaction.
  • - Its effectiveness as a biomarker was tested in live cell imaging for breast cancer cells (MDA-MB-231), highlighting its potential in biomedical applications.
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Given the ubiquitous and multifaceted role of copper ions in various biological processes, we report herein the one-pot facile synthesis, X-ray structure, Hirshfeld surface analysis, enzyme-like activities, and biomolecular interactions of three mononuclear copper(II) complexes, [Cu(L)(X)] (1-3) with a tridentate quinoline-based salicylaldimine Schiff base (LH) having an NO donor set where X denotes NCS, N, and NO for complexes 1, 2, and 3, respectively. Single-crystal X-ray study, spectroscopic techniques, DFT, and TD-DFT calculations were all used to fully characterize the complexes. The bio-inspired catalytic activities of the synthesized complexes were spectrophotometrically evaluated for the aerial oxidation of 3,5-di--butylcatechol (3,5-DTBC) and 2-aminophenol (OAPH) in acetonitrile.

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Oxidative stress including decreased antioxidant enzyme activities, elevated lipid peroxidation, and accumulation of advanced glycation end products in the blood from children with autism spectrum disorders (ASD) has been reported. The mechanisms affecting the development of ASD remain unclear; however, toxic environmental exposures leading to oxidative stress have been proposed to play a significant role. The BTBRTItpr3/J (BTBR) strain provides a model to investigate the markers of oxidation in a mouse strain exhibiting ASD-like behavioral phenotypes.

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Urinary bladder cancer (UBC) is one of the most common cancers and has notoriously high risk of recurrence and mortality across the globe. Current clinical initial diagnostic approaches are either invasive or lacks sensitivity. In this study, an attempt has been made to invent a cost-effective, novel, portable diagnostic device based on the environmental sensitive fluorophores namely Nile Red (NR), Eosin Y (EY) and Rose Bengal (RB).

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Marker-assisted breeding and tagging of important quantitative trait loci for beneficial traits are two important strategies for the genetic improvement of plants. However, the scarcity of diverse and informative genetic markers covering the entire tea genome limits our ability to achieve such goals. In the present study, we used a comparative genomic approach to mine the tea genomes of Camellia sinensis var.

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A new ratiometric fluorescent probe ()-2-(benzo[]thiazol-2-yl)-3-(8-methoxyquinolin-2-yl)acrylonitrile (HQCN) was synthesised by the perfect blending of quinoline and a 2-benzothiazoleacetonitrile unit. In a mixed aqueous solution, HQCN reacts with hydrazine (NH) to give a new product 2-(hydrazonomethyl)-8-methoxyquinoline along with the liberation of the 2-benzothiazoleacetonitrile moiety. In contrast, the reaction of hypochlorite ions (OCl) with the probe gives 8-methoxyquinoline-2-carbaldehyde.

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Black rice is famous for containing high anthocyanin while Joha rice is aromatic with low anthocyanin containing rice from the North-Eastern Region (NER) of India. However, there are limited reports on the anthocyanin biosynthesis in Manipur Black rice. Therefore, the present study was aimed to understand the origin, domestication and anthocyanin biosynthesis pathways in Black rice using the next generation sequencing approaches.

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The exploitation of heterosis through intersubspecific hybridisation between and has been a major breeding target in rice, but is marred by the cross incompatibility between the genomes. Wide compatibility (WC) is a triallelic system at the locus on chromosome 6 that ensures the specificity of hybridisation within and between and The allele that favours intercrossing is sparsely distributed in the rice gene pool and therefore warrants identification of diverse WC sources to develop superior intersubspecific hybrids. In this study, we have identified several novel WC sources through the marker-assisted screening of a large set of 950 rice genotypes.

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Deepwater is an abiotic stress that limits rice cultivation worldwide due to recurrent floods. The miRNAs and lncRNAs are two non-coding RNAs emerging as major regulators of gene expressions under different abiotic stresses. However, the regulation of these two non-coding RNAs under deepwater stress in rice is still unexplored.

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In recent years, microRNAs (miRNAs) and tRNA-derived RNA fragments (tRFs) have been reported extensively following different approaches of identification and analysis. Comprehensively analyzing the present approaches to overcome the existing variations, we developed a benchmarking methodology each for the identification of miRNAs and tRFs, termed as miRNA Prediction Methodology (miRPreM) and tRNA-induced small non-coding RNA Prediction Methodology (tiRPreM), respectively. We emphasized the use of respective genome of organism under study for mapping reads, sample data with at least two biological replicates, normalized read count support and novel miRNA prediction by two standard tools with multiple runs.

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Motivation: Tea is a cross-pollinated woody perennial plant, which is why, application of conventional breeding is limited for its genetic improvement. However, lack of the genome-wide high-density SNP markers and genome-wide haplotype information has greatly hampered the utilization of tea genetic resources toward fast-track tea breeding programs. To address this challenge, we have generated a first-generation haplotype map of tea (Tea HapMap-1).

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Oryza coarctata is an obligate halophyte of wild species of rice which thrives well under high saline as well as submerged conditions. We report here for the first time that O. coarctata is triploid (2n = 3x = 36), though it was previously known as tetraploid (2n = 4x = 48).

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Three gene families in plants viz. Argonaute (AGOs), Dicer-like (DCLs) and RNA dependent RNA polymerase (RDRs) constitute the core components of small RNA mediated gene silencing machinery. The present study endeavours to identify members of these gene families in tea and to investigate their expression patterns in different tissues and various stress regimes.

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Article Synopsis
  • - The study focuses on the impact of salinity on rice plants, particularly during the reproductive stage, and examines the role of long non-coding RNAs (lncRNAs) in this process.
  • - Researchers analyzed RNA-seq data from two rice genotypes, Horkuch (salt-tolerant) and IR-29 (salt-sensitive), identifying thousands of lncRNAs, many of which were newly discovered.
  • - Interaction analysis revealed that specific lncRNAs are involved in biochemical pathways related to salt stress adaptation, suggesting their potential role in improving rice resilience to salinity.
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