On trans-Sasakian manifold equipped with m-projective curvature tensor

The work towards of the attending paper is to interpret the trans-Sasakian manifold equipped with m-projective curvature tensor and its various geometric properties. First, we observe that m-projectively flat trans-Sasakian manifold is Einstein. In order, we discussed m-projectively conservative and φ-m-projectively flat trans-Sasakian manifold. Following, we found the sufficient condition for quasi m-projectively flat transSasakian manifold to be m-projectively flat. In the end, the m-projectively and φ-mprojectively symmetric trans-Sasakian manifolds are analyzed.The authors pay their sincere gratitute to the reviewer for his/her valuable comments. The authors would also like to express their great appreciation to the National Board for Higher Mathematics (Department of Atomic Energy), Mumbai, India for financial support in the form (No.NBHM/R.P.48/2012/Fresh/364) of research project.Publisher's Versio

ON GENERALIZED M-PROJECTIVE -RECURRENT TRANS-SASAKIAN MANIFOLDS

The aim of the present paper is to study generalized M-projective - recurrent trans-Sasakian manifold and its various geometric properties. First, we find the sufficient condition for generalized M-projective -recurrent trans-Sasakian manifold to become Einstein. Then non-existence of generalized M-projective -recurrent trans-Sasakian manifold has been shown under certain condition. Finally, the sufficient condition for super generalized Ricci-recurrent was also established

Robust estimation of bacterial cell count from optical density

Optical density (OD) is widely used to estimate the density of cells in liquid culture, but cannot be compared between instruments without a standardized calibration protocol and is challenging to relate to actual cell count. We address this with an interlaboratory study comparing three simple, low-cost, and highly accessible OD calibration protocols across 244 laboratories, applied to eight strains of constitutive GFP-expressing E. coli. Based on our results, we recommend calibrating OD to estimated cell count using serial dilution of silica microspheres, which produces highly precise calibration (95.5% of residuals <1.2-fold), is easily assessed for quality control, also assesses instrument effective linear range, and can be combined with fluorescence calibration to obtain units of Molecules of Equivalent Fluorescein (MEFL) per cell, allowing direct comparison and data fusion with flow cytometry measurements: in our study, fluorescence per cell measurements showed only a 1.07-fold mean difference between plate reader and flow cytometry data

Evaluation of Genotypes for Yield and it’s Contributing Traits in Garden Pea (Pisum sativum L.)

The experiment was  conducted  to find out the diversity 44 diverse genotypes during year 2019-20 for quantitative and qualitative traits. Wide range of variations was observed among the studied traits viz., days to 50 per cent flowering, primary branches per plant, node to first flower appears, node to first pod appears, length of pod (cm), pod diameter (cm), number of seed per pod, number of pod per plant, number of pod per 250g, number of seed per 250g, weight of seed per 250g, shelling(%), T.S.S.(0B), pod yield per plant and two visual observation were pod shape and pod colour were recorded. Perusal of per se performance of the genotypes for all the traits studied revealed a wide range of mean values which indicated that the genotypes involved in this study were genetically diverse and have good breeding value, which confirmed the predictions of analysis of variance. Out of 44 genotypes, eighteen genotypes produced significantly higher yield than best check PC-521

Glabridin-induced vasorelaxation: Evidence for a role of BK_Ca channels and cyclic GMP

AbstractBackground and purposeGlabridin is a major flavonoid in Glycyrrhiza glabra (licorice) root, a traditional Asian medicine. Glabridin is reported to have anti-atherogenic, anti-inflammatory and anti-nephritic properties; however its effects on vascular tone remain unexplored.Experimental approachWe examined the effect of glabridin on rat main mesenteric artery using isometric myography and also ELISA to measure cGMP levels.Key resultsGlabridin (30μM) relaxed arteries pre-constricted with the thromboxane A2 analog U46619 (0.2μM) by ~60% in an endothelium-independent manner. Relaxation to 30μM glabridin was abolished by the guanylate cyclase inhibitor 1H-[1,2,4]oxadiazolo[4,3-a]quinoxalin-1-one (1μM) and by the BKCa channel blocker tetraethyammonium (1mM) but was unaffected by the estrogen receptor antagonist ICI182780. The concentration-response curve to glabridin (0.1 to 30μM) was downshifted by the KATP channel blocker glibenclamide (10μM), the KV channel blocker 4-aminopyridine (300μM), and the KIR blocker BaCl2 (30μM). In U46619-contracted arteries partially relaxed by 0.1μM sodium nitroprusside, application of 10 and 30nM glabridin caused additional vasorelaxation. Glabridin (30μM) approximately doubled tissue [cyclic GMP]. Application of the phosphodiesterase inhibitor isobutylmethylxanthine caused a much larger rise in [cyclic GMP], and glabridin failed to cause vasorelaxation or a further rise in [cGMP] when co-applied with IBMX.Conclusions and implicationsVasorelaxation to glabridin is dependent on the opening of K+ channels, particularly BKCa, probably caused by a rise in cellular [cyclic GMP] owing to phosphodiesterase inhibition. In the presence of sodium nitroprusside an effect of glabridin is observed at nM concentrations, similar those measured in plasma following human ingestion of licorice flavonoid oil

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Fusarium oxysporum f.sp. cubense Tropical Race 4 (FOC TR4), is one of the newly emerged dreaded pathogens of banana with an established global presence. Fungicides have not been effective in controlling the disease. There are very few effective antagonistic microbes reported for the biological management of this pathogen. In the present study, suppressive soil was selected for isolation of potential biocontrol plant growth-promoting bacteria. The bacterial strain CSR-D4 Bacillus licheniformis was identified with significant antagonistic attributes and plant growth-promoting properties. This strain exhibited a high inhibition percentage (77.59%) against the FOC TR4 pathogen in the dual plate assay. Further, the bioactive metabolite of the strain conferring biocontrol of FOC-TR4 was also identified through the Liquid Chromatography-Mass Spectrophotometry technique. Our analysis revealed the presence of many antifungal metabolites in the isolate CSR-D4, the majority of which were identified as iturin, fengycin, surfactin, and bacillomycin. These results indicated the involvement of metabolites in the antifungal activity of the strain CSR-D4 against FOC TR4. During sick-pots studies taken with susceptible Cavendish banana cultivar Grand Naine, application of B. licheniformis CSR-D4 showed a significant reduction in the disease incidence percentage (10%). B. licheniformis CSR-D4 treated plants also showed enhanced activity of defense-related enzymes such as β-1,3 glucanase, peroxidase, chitinase, polyphenol oxidase, and phenyl-alanine ammonium lyase compared to FOC TR4 alone treated plants that suggest the occurrence of induced host tolerance in Bacillus licheniformis CSR-D4 treated plants. Our results suggest the antagonistic potential of rhizobacterium Bacillus licheniformis CSR-D4 strain through secreted metabolites mediated the effective biocontrol of Fusarium oxysporum f.sp. cubense Tropical Race 4.Not Availabl

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Not AvailableFusarium oxysporum f.sp. cubense Tropical Race 4 (FOC TR4), is one of the newly emerged dreaded pathogens of banana with an established global presence. Fungicides have not been effective in controlling the disease. There are very few effective antagonistic microbes reported for the biological management of this pathogen. In the present study, suppressive soil was selected for isolation of potential biocontrol plant growth-promoting bacteria. The bacterial strain CSR-D4 Bacillus licheniformis was identified with significant antagonistic attributes and plant growth-promoting properties. This strain exhibited a high inhibition percentage (77.59%) against the FOC TR4 pathogen in the dual plate assay. Further, the bioactive metabolite of the strain conferring biocontrol of FOC-TR4 was also identified through the Liquid Chromatography-Mass Spectrophotometry technique. Our analysis revealed the presence of many antifungal metabolites in the isolate CSR-D4, the majority of which were identified as iturin, fengycin, surfactin, and bacillomycin. These results indicated the involvement of metabolites in the antifungal activity of the strain CSR-D4 against FOC TR4. During sick-pots studies taken with susceptible Cavendish banana cultivar Grand Naine, application of B. licheniformis CSR-D4 showed a significant reduction in the disease incidence percentage (10%). B. licheniformis CSR-D4 treated plants also showed enhanced activity of defense-related enzymes such as β-1,3 glucanase, peroxidase, chitinase, polyphenol oxidase, and phenyl-alanine ammonium lyase compared to FOC TR4 alone treated plants that suggest the occurrence of induced host tolerance in Bacillus licheniformis CSR-D4 treated plants. Our results suggest the antagonistic potential of rhizobacterium Bacillus licheniformis CSR-D4 strain through secreted metabolites mediated the effective biocontrol of Fusarium oxysporum f.sp. cubense Tropical Race 4.Not Availabl

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Comparative Study of Corrosion Inhibition Efficacy of Alkaloid Extract of Artemesia vulgaris and Solanum tuberosum in Mild Steel Samples in 1 M Sulphuric Acid

Two different types of alkaloids are successfully extracted from two plants Artemisia vulgaris (AV) and Solanum tuberosum (ST) in the laboratory and used as corrosion inhibitors for mild steel samples. The corrosion inhibition potential of these alkaloids is determined by weight loss and potentiodynamic polarization measurement methods. Based on the weight loss measurement study of a sample immersed for 6 h in 1000 ppm inhibitor solution of AV and ST alkaloids, the corrosion inhibition efficiency is found to be 92.58% and 90.79%, respectively. The potentiodynamic polarization measurement shows 88.06% and 83.22% corrosion inhibition efficiency for AV and ST alkaloids, respectively, for the sample immersed for 1 h in 1000 ppm inhibitor solution. These promising efficiency and suitable immersion time effect can lead to the development of good green inhibitors