A5064274070- Plant-Microbe Interactions and Immunity
- Plant Pathogenic Bacteria Studies
- Legume Nitrogen Fixing Symbiosis
- Rice Cultivation and Yield Improvement
- Glass properties and applications
- Genetic Mapping and Diversity in Plants and Animals
- Genomics and Phylogenetic Studies
- GABA and Rice Research
- Material Dynamics and Properties
- Plant Parasitism and Resistance
- Plant pathogens and resistance mechanisms
- Solid-state spectroscopy and crystallography
- Indian History and Philosophy
- Plant Genetic and Mutation Studies
- Phase-change materials and chalcogenides
- Bacterial biofilms and quorum sensing
- Plant Disease Resistance and Genetics
- Advanced Battery Materials and Technologies
- Insect Resistance and Genetics
- Agricultural Systems and Practices
- South Asian Cinema and Culture
- Plant Pathogens and Fungal Diseases
- Plant Gene Expression Analysis
- South Asian Studies and Diaspora
- Politics and Conflicts in Afghanistan, Pakistan, and Middle East
Centre for Cellular and Molecular Biology
2016-2025
Academy of Scientific and Innovative Research
2023-2024
National Institute of Plant Genome Research
2023
Council of Scientific and Industrial Research
2009-2020
Consiglio per la ricerca in agricoltura e l’analisi dell’economia agraria
2017
South China Agricultural University
2017
Singapore Centre for Environmental Life Sciences Engineering
2017
Nanyang Technological University
2017
International Centre for Genetic Engineering and Biotechnology
2012-2017
Rabindra Bharati University
2011-2017
The conductivity relaxation phenomenon in glassy and crystalline ionic conductors has been known for many years to be a highly nonexponential process. stretched exponential function exp-(t/\ensuremath{\tau}${)}^{\mathrm{\ensuremath{\beta}}}$ used with varying levels of success describe this relaxation. Whether the nonexponentiality is due parallel conducting processes acting independently each other having distribution times or serial strongly coupling ionically species constraining other's...
$^{7}\mathrm{Li}$ nuclear spin-lattice relaxation rates (${\mathit{R}}_{1}$) versus the temperature at several resonance frequencies (4 to 40 MHz) are reported together with conductivity measurements, \ensuremath{\sigma}(\ensuremath{\omega}), in range 1 Hz 3.76 MHz on 0.${56\mathrm{L}\mathrm{i}}_{2}$S+0.${44\mathrm{S}\mathrm{i}}_{2}$S, a glassy fast-ionic conductor. Both ${\mathit{R}}_{1}$ and \ensuremath{\sigma}(\ensuremath{\omega}) fitted consistently over whole frequency by using...
A single gene with a dynamic evolutionary history allows plant pathogenic bacteria to spread systemically through their hosts.
ac and dc conductivities of fast-ion conducting x${\mathrm{Na}}_{2}$S+(1-x)${\mathrm{B}}_{2}$${\mathrm{S}}_{3}$ glasses in the composition range 0.001\ensuremath{\le}x\ensuremath{\le}0.1 were analyzed using Almond-West formula \ensuremath{\sigma}(\ensuremath{\nu})=${\mathrm{\ensuremath{\sigma}}}_{\mathrm{dc}}$[1+(\ensuremath{\nu}/${\ensuremath{\nu}}_{\mathit{H}}$${)}^{\mathrm{\ensuremath{\alpha}}}$]. The hopping frequency for free charge carriers ${\ensuremath{\nu}}_{\mathit{H}}$,...
Innate immune responses are induced in plants and animals through perception of Damage Associated Molecular Patterns. These suppressed by pathogens during infection. A number studies have focussed on identifying functions plant pathogenic bacteria that involved suppression Pathogen Pattern responses. In comparison, there is very little information used to suppress Xanthomonasoryzae pv. oryzae, a gram negative bacterial pathogen rice, secretes hydrolytic enzymes such as LipA (Lipase/Esterase)...
Members of the WRKY gene family play important roles in regulating plant responses to abiotic and biotic stresses. Treatment with either one two different cell wall degrading enzymes (CWDEs), LipaseA CellulaseA, induces immune enhances expression OsWRKY42 rice. However, role CWDE induced is not known. Expression rice transcription factor upon treatment leaves CWDEs, wounding salt. Overexpression leads enhanced callose deposition Arabidopsis but this does enhance tolerance bacterial...
Plant pathogens secrete cell wall-degrading enzymes that degrade various components of the plant wall. Plants sense this wall damage as a mark infection and induce immune responses. However, functions are involved in elaboration damage-induced responses remain poorly understood. Transcriptome analysis revealed rice (Oryza sativa) receptor-like kinase, WALL-ASSOCIATED KINASE-LIKE21 (OsWAKL21.2), is up-regulated following treatment with either Xanthomonas oryzae pv (a bacterial pathogen) or...
Xanthomonas oryzae pv. (Xoo), the causal agent of bacterial blight rice, translocates multiple Transcription Activator-Like Effectors (TALEs) into rice cells. The TALEs localize to host cell nucleus, where they bind DNA in a sequence-specific manner and enhance gene expression promote disease susceptibility. Xoo strain PXO99 A encodes nineteen TALEs, but targets all these have not been defined. meta-analysis transcriptome profiles revealed annotated as flavonol synthase/flavanone-3...
Pseudomonas syringae pv. actinidiae (Psa) is an emerging phytopathogen causing bacterial canker disease in kiwifruit plants worldwide. Quorum sensing (QS) gene regulation plays important roles many different plant pathogens. In this study we analyzed the presence and possible role of N-acyl homoserine lactone (AHL) quorum Psa. It was established that Psa does not produce AHLs a typical complete LuxI/R QS system absent strains. however possesses three putative luxR solos designated here as...
Xanthomonas oryzae pv. secretes a number of plant cell wall-degrading enzymes (CWDEs) whose purified preparations induce defense responses in rice. These are suppressed by X. using type 3 secretion system (T3SS) effectors and mutant (T3SS(-)) is an inducer rice responses. We assessed the role individual CWDEs induction during infection, mutating them genetic background T3SS(-). mutated genes for five different secreted oryzae, including two cellulases (clsA cbsA), one xylanase (xyn),...
Xanthomonas oryzae pv.oryzae (Xoo) causes the serious bacterial blight disease of rice. Xoo secretes a repertoire plant cell wall degrading enzymes (CWDEs) like cellulases, xylanases, esterases etc., which act on various components rice wall. The major cellulases and xylanases secreted by have been identified their role in virulence has determined. In this study, we some pectin assessed virulence. Bioinformatics analysis indicated presence four homogalacturonan (HG) genes genome Xoo. HG...
Xanthomonas oryzae pv. uses several type III secretion system (T3SS) secreted effectors, namely XopN, XopQ, XopX and XopZ, to suppress rice immune responses that are induced following treatment with cell wall degrading enzymes. Here we show a T3SS effector interacts two of the eight 14-3-3 proteins. Mutants defective in binding also suppression responses, suggesting interaction proteins is required for host innate immunity. However, Agrobacterium-mediated delivery both XopQ into cells...
ABSTRACT Xanthomonas species are major pathogens of plants and have been studied extensively. There is increasing recognition the importance non-pathogenic within same genus. With this came need to understand genomic functional diversity (NPX) at strain level. This study reports isolation investigation into variation in NPX isolates, chiefly indica , a newly discovered from rice. The establishes relationship X. strains clade I Xanthomonads with another species, sontii also associated rice...
Bacterial Blight (BB) is the most serious bacterial disease of rice. Usage resistant cultivars has been a successful strategy in controlling BB. However, constant selection pressure causes evolution hypervirulent pathogenic strains that break down resistance, thus necessitating additional sources resistance. An induced-mutant line derived from elite rice cultivar Samba Mahsuri was identified to exhibit broad-spectrum resistance Using next-generation gene mapping approaches, we genomic...
Precise control of heading date is essential for optimizing regional adaptability, enhancing climate resilience, and maximizing grain yield in rice, making it a key breeding target. The SM93 rice line exhibits 7-10-day earlier than the elite Indian variety, Samba Mahsuri (SM). F2 populations derived from cross SM with were phenotyped across three successive kharif (rainy) seasons (2019-2021), revealing consistent early notable transgressive segregation. Initial QTL-seq analysis identified...
Summary Many bacterial phytopathogens employ effectors secreted through the type‐III secretion system to suppress plant innate immune responses. The Xanthomonas non‐TAL effector protein outer Q (XopQ) exhibits homology nucleoside hydrolases. Previous work indicated that mutations which affect biochemical activity of XopQ fail its ability rice responses, suggesting might be acting some other pathway or mechanism. In this study, we show interacts in yeast and planta with two 14‐3‐3 proteins,...
Abstract Background Improved Samba Mahsuri (ISM) is an elite, high-yielding, bacterial blight resistant, fine-grained rice variety with low glycaemic index. It highly sensitive to salt stress, particularly at seedling stage, which significantly reduces its yield potential in coastal areas. A salinity tolerant QTL , Saltol, associated stage tolerance was previously mapped on chromosome 1 (10.6–11.5 Mb) from the Indian landrace, Pokkali and effective different genetic backgrounds. The...
Bacterial blight disease of rice caused by Xanthomonas oryzae pv. (Xoo) is one the most serious constraints in production. The sustainable strategy to combat deployment host plant resistance. Earlier, we identified an introgression line, IR 75084-15-3-B-B, derived from Oryza officinalis possessing broad-spectrum resistance against Xoo. In order understand inheritance O. accession and identify genomic region(s) associated with resistance, a recombinant inbred line (RIL) mapping population was...
SUMMARY Xanthomonas oryzae pv. , the causal agent of bacterial blight rice, produces siderophores only under iron‐limiting conditions. We screened 15 400 mTn 5 ‐induced mutants X. and isolated 27 that produced even iron‐replete found insertions in 25 these were or close to six genes. Mutants with five genes [ colS XOO1806 (a conserved hypothetical protein), acnB prpR prpB ] exhibited a deficiency for growth on medium decrease virulence. Insertions sixth gene, XOO0007 affect ability grow...
Pseudomonas fuscovaginae (Pfv) is an emerging plant pathogen of rice and also other gramineae plants. It causes sheath brown rot disease in with symptoms that are characterized by lesions on the flag leaf sheath, grain discoloration sterility. was first isolated as a high altitude Japan has since been reported several countries throughout world. Pfv broad host range very little known about its virulence mechanisms. An planta screen 1000 random independent Tn5 genomic mutants resulted...