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Bhattacharya A, Chauhan P, Singh SP, Narayan S, Bajpai RK, Dwivedi A, Mishra A. Bacillus tequilensis influences metabolite production in tomato and restores soil microbial diversity during Fusarium oxysporum infection. Plant Biol (Stuttg) 2024. [PMID: 38682466 DOI: 10.1111/plb.13647] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2023] [Accepted: 02/08/2024] [Indexed: 05/01/2024]
Abstract
This study evaluates cellular damage, metabolite profiling, and defence-related gene expression in tomato plants and soil microflora during Fusarium wilt disease after treatment with B. tequilensis PBE-1. Histochemical analysis showed that PBE-1 was the primary line of defence through lignin deposition and reduced cell damage. GC-MS revealed that PBE-1 treatment ameliorated stress caused by F. oxysporum infection. PBE-1 also improved transpiration, photosynthesis, and stomatal conductance in tomato. qRT-PCR suggested that the defence-related genes FLS2, SERK, NOS, WRKYT, NHO, SAUR, and MYC2, which spread infection, were highly upregulated during F. oxysporum infection, but either downregulated or expressed normally in PBE-1 + P treated plants. This indicates that the plant not only perceives the bio-control agent as a non-pathogen entity but its presence in normal metabolism and gene expression within the host plant is maintained. The study further corroborated findings that application of PBE-1 does not cause ecological disturbances in the rhizosphere. Activity of soil microflora across four treatments, measured by Average Well Colour Development (AWCD), showed continuous increases from weeks 1 to 4 post-pathogen infection, with distinct substrate usage patterns like tannic and fumaric acids impacting microbial energy source utilization and diversity. Principal Component Analysis (PCA) and diversity indices like McIntosh, Shannon, and Simpson further illustrated significant microbial community shifts over the study period. In conclusion, our findings demonstrate that B. tequilensis PBE-1 is an ideal bio-agent for field application during Fusarium wilt disease management in tomato.
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Affiliation(s)
- A Bhattacharya
- Division of Microbial Technology, CSIR-National Botanical Research Institute, Lucknow, Uttar Pradesh, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
| | - P Chauhan
- Division of Microbial Technology, CSIR-National Botanical Research Institute, Lucknow, Uttar Pradesh, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
- School of Sciences, P P Savani University, Surat, Gujarat, India
| | - S P Singh
- Pharmacognosy Division, CSIR-National Botanical Research Institute, Lucknow, Uttar Pradesh, India
| | - S Narayan
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
- Plant Physiology Laboratory, CSIR-National Botanical Research Institute, Lucknow, India
| | - R K Bajpai
- Ex Director Research Services, Indira Gandhi Krishi Vishwavidyalaya, Raipur, India
| | - A Dwivedi
- Photobiology Division, CSIR-Indian Institute of Toxicology Research, Lucknow, India
| | - A Mishra
- Division of Microbial Technology, CSIR-National Botanical Research Institute, Lucknow, Uttar Pradesh, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
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Kumar B, Verma AK, Bajpai RK, Singh TN. Numerical analysis of heat dissipation through granite and clay in the multi-barrier system of a geological disposal facility. CURR SCI INDIA 2022. [DOI: 10.18520/cs/v122/i9/1089-1093] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Gupta VB, Pal TK, Bajpai RK. Development of Artificial Neural Network-Based Model for Prediction of Temperature Field in Host Rock of a Geological Disposal Facility for Radioactive Waste. CURR SCI INDIA 2020. [DOI: 10.18520/cs/v118/i3/439-443] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Patel MA, Kar AS, Garg D, Kumar S, Tomar BS, Bajpai RK. Sorption studies of radionuclides on argillaceous clays of Cuddapah System. J Radioanal Nucl Chem 2017. [DOI: 10.1007/s10967-017-5299-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Rani N, Shrivastava JP, Bajpai RK. Long-Term Performance Assessment of Nuclear Waste and Natural Glasses in the Geological Repository: a Geochemical Modelling. CURR SCI INDIA 2016. [DOI: 10.18520/cs/v110/i2/214-227] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Kasar S, Kumar S, Bajpai RK, Tomar BS. Diffusion of Na(I), Cs(I), Sr(II) and Eu(III) in smectite rich natural clay. J Environ Radioact 2016; 151 Pt 1:218-223. [PMID: 26519922 DOI: 10.1016/j.jenvrad.2015.10.012] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2015] [Revised: 10/01/2015] [Accepted: 10/15/2015] [Indexed: 06/05/2023]
Abstract
Diffusion of Na(I), Cs(I), Sr(II) and Eu(III) in smectite rich natural clay, proposed as a backfill material in the Indian geological repository, was studied using the out-diffusion method. Radiotracers (22)Na, (137)Cs, (85)Sr and (154)Eu were used; the first three are carrier-free enabling experimental work at sub-micromolar metal ion concentration, and Eu(III) tracer (154)Eu was used at sub millimolar concentration. An out-diffusion methodology, wherein a thin planar source of radioactivity placed between two clay columns diffuses out, was used to obtain the apparent diffusion coefficient (Da) values. This methodology enabled determination of diffusion coefficient even for strongly sorbing (154)Eu. Da values for (22)Na, (137)Cs, (85)Sr and (154)Eu were 2.35 (±0.14) × 10(-11), 2.65 (±0.09) × 10(-12), 3.32 (±0.15) × 10(-11) and 1.23 (±0.15) × 10(-13) m(2) s(-1), respectively. Da values were found to be in fair agreement with literature data reported for similar mineralogical sediments. Sorption of radionuclides on the clay was also determined in the present study and differences in Da values were rationalized on the basis of sorption data. Distribution ratios (Kd) for Cs(I) and Eu(III) were higher than that for Sr(II), which in turn was higher than that for Na(I).
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Affiliation(s)
- Sharayu Kasar
- Radioanalytical Chemistry Division, Bhabha Atomic Research Centre, Mumbai, 400085, India
| | - Sumit Kumar
- Radioanalytical Chemistry Division, Bhabha Atomic Research Centre, Mumbai, 400085, India
| | - R K Bajpai
- Technology Development Division, Bhabha Atomic Research Centre, Mumbai, 400085, India
| | - B S Tomar
- Radioanalytical Chemistry Division, Bhabha Atomic Research Centre, Mumbai, 400085, India.
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Kasar S, Kumar S, Kar A, Bajpai RK, Kaushik CP, Tomar BS. Retention behaviour of Cs(I), Sr(II), Tc(VII) and Np(V) on smectite-rich clay. J Radioanal Nucl Chem 2014. [DOI: 10.1007/s10967-014-2943-2] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Kumar S, Kasar SU, Bajpai RK, Kaushik CP, Guin R, Das SK, Tomar BS. Kinetics of Pu(IV) sorption by smectite-rich natural clay. J Radioanal Nucl Chem 2014. [DOI: 10.1007/s10967-014-2949-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Bajpai RK, Reuß M. Evaluation of feeding strategies in carbon-regulated secondary metabolite production through mathematical modeling. Biotechnol Bioeng 2004. [DOI: 10.1002/bit.260230406] [Citation(s) in RCA: 90] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Bajpai RK, Gupta AK, Rao MG. Binary and ternary ion-exchange equilibriums. Sodium-cesium-manganese-Dowex 50W-X8 and cesium-manganese-strontium-Dowex 50W-X8 systems. ACTA ACUST UNITED AC 2002. [DOI: 10.1021/j100629a022] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Harjai MM, Bajpai RK, Chaturvedi AK, Maudar KK, Deshpande GU. POST INJECTION TUBERCULAR INFECTION. Med J Armed Forces India 1999; 55:77-78. [PMID: 28775579 DOI: 10.1016/s0377-1237(17)30327-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Affiliation(s)
- M M Harjai
- Reader, Armed Forces Medical College, Pune - 411 040
| | - R K Bajpai
- Reader, Armed Forces Medical College, Pune - 411 040
| | | | - K K Maudar
- Consultant and Head, Department of Surgery, Armed Forces Medical College, Pune - 411 040
| | - G U Deshpande
- Reader, Department of Pathology, Armed Forces Medical College, Pune - 411 040
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Ohansson J, Yasuda HK, Bajpai RK. Fouling and protein adsorption effect of low-temperature plasma treatment of membrane surfaces. Appl Biochem Biotechnol 1998; 70-72:747-63. [DOI: 10.1007/bf02920186] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Abstract
Although there is increasing use of insect ovarian Sf9 cells for the production of recombinant proteins, namely, via the baculovirus vector expression system, little is known about the lipids in the cell membrane and whether endogenous phospholipases are present for regulation of the cell membrane lipids. In this study, analysis of membrane lipids of Sf9 cells indicated the presence of phosphatidylethanolamine (PE) (diacyl type) and phosphatidylcholine as major phospholipids, followed by phosphatidylserine and phosphatidylinositol (PI), and only trace amounts of ethanolamine plasmalogen. These phospholipids contain high proportions of monoenoic fatty acids, e.g., 16:1 and 18:1, which comprise more than 70% of the total fatty acids although small amounts of polyunsaturated fatty acids such as 18:2 and 20:4 are also present. When Sf9 cells were incubated in a culture medium containing [14C]oleic acid and [14C]arachidonic acid, a large portion of the labels were incorporated into membrane phospholipids. Using [14C]arachidonoyl-phospholipids as substrates for incubation with cell homogenate and subcellular fractions, results indicate the presence of a ca(2+)-independent phospholipase A (PLA2) in the Sf9 cell cytosol fraction. This PLA2 shows a high preference for hydrolysis of PE and is active at a pH range of 7-9. Unlike the brain cells which contain active phospholipase C (PLC) specific for phosphatidylinositol, only limited amount of diacylglycerol (DAG) was released from [14C]arachidonoyl-PE in the Sf9 cells. Taken together, this study demonstrates active metabolism of membrane phospholipids in Sf9 cells, most likely mediated by acyltransferases and PLA2. Furthermore, despite the absence of PLC for PI, limited amount of DAG could be generated through hydrolysis of PE.
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Affiliation(s)
- L H Yeh
- Department of Chemical Engineering, University of Missouri, Columbia 65212, USA
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Affiliation(s)
- R K Bajpai
- Department of Chemical Engineering, University of Missouri, Columbia 65211
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Tanner RD, Prokop A, Bajpai RK. Removal of fiber from vines by solid state fermentation/enzymatic degradation: A comparison of flax and kudzu retting. Biotechnol Adv 1993; 11:635-43. [PMID: 14545683 DOI: 10.1016/0734-9750(93)90032-i] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Kinetic data describing the decomposition of the outer sheath of kudzu vines (undergoing a solid fermentation process in a glass beaker of soil) have been analyzed to determine the two constants, K(m)/S(o) and V/S(o), where S(o) is the initial substrate concentration, K(m) the Michaelis constant, and V the maximum product rate. The kinetic data are expressed by a simple time-varying desheathing index, obtained from the number of spatula scrapings required to reach the desired hard cellulosic fibers (vascular bundles) of the plant. A simple relationship between the desheathing index, D.I. and the dimensionless product concentration, P/S(o), is proposed to relate the D.I. data and enzyme kinetic concentration data. Thus, the Michaelis-Menten enzyme kinetic parameters can be estimated from easily obtained physical (non-chemical data; the D.I.(t) measurements). This low energy process for processing vines into valuable fibers is similar to the traditional microbial method for recovering flax fibers for linen cloth, by retting of the flax plant vines, except there is no unbound liquid water present in the soil medium.
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Affiliation(s)
- R D Tanner
- Chemical Engineering Department, Vanderbilt University, Nashville, TN 37232, USA
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Abstract
A mathematical model has been developed for the delta-endotoxin producing Bacillus thuringiensis. The structure of the model involves the processes taking place during vegetative growth, those leading to the initiation of sporulation under conditions of carbon and/or nitrogen limitation, and the sporulation events. The key features in the model are the pools of compounds, such as PRPP, IMP, ADP/ATP, GDP/GTP, pyrimidine nucleotides, NAD/NADH2, amino acids, nucleic acids, cell wall, and vegetative and sporulation proteins. These, along with sigma-factors that control the nature of RNA-polymerase during the different phases, effectively stimulate the vegetative growth and sporulation. The initiation of sporulation is controlled by the intracellular concentration of GTP. Results of simulation of vegetative growth, initiation of sporulation, spore protein formation, and production of delta-endotoxin under C- or N-limitation are presented.
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Affiliation(s)
- M Starzak
- Department of Chemical Engineering, University of Missouri-Columbia 65211
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Tiwari RD, Srivastava KC, Shukla S, Bajpai RK. Chemical examination of the fixed oil from the seeds of Cordia myxa. Planta Med 1967; 15:240-244. [PMID: 5618635 DOI: 10.1055/s-0028-1099978] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
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