Asian Journal of Biochemistry, Genetics and Molecular Biology
EISSN : 2582-3698
Published by: Sciencedomain International (10.9734)
Total articles ≅ 182
Latest articles in this journal
Published: 27 November 2021
Asian Journal of Biochemistry, Genetics and Molecular Biology pp 23-33; https://doi.org/10.9734/ajbgmb/2021/v9i430225
Single nucleotide polymorphisms (SNP) are responsible for genetic mutations. We studied genetic molecular variations and found an association of oral cancer with SNP of Adenylate Cyclase 2 (ADCY2) rs252546 and complement C7 (C7) rs1450656 genes in people of Southern Punjab, Pakistan. The study involves 100 cases of oral cancer and 100 healthy individuals. ADCY2 is found as a membrane-associated enzyme and C7 is involved in innate immunity. The process of genotyping was carried out by Tetra ARMS Primer PCR. The genetic variant of ADCY2 rs252546 has allelic origin G/A and C7 rs1450656 with C/T. The statistical analysis showed that the 51-60 years age group is significantly associated with oral cancer. The allelic frequency of ADCY2 rs252546 and C7 rs1450656 was calculated through Hardy Weinberg equilibrium. The homozygous mutant allele G of ADCY2 was more prevalent in cases and C allelic genotype was equally found in cases and controls. Other demographic and polymorphic studies indicated a significant association of variants of ADCY2 and C7 with oral cancer in the local population of Punjab. Variations in ADCY2 and C7 can be used as potential biomarkers and biological targets for oral cancer management strategies.
Published: 17 November 2021
Asian Journal of Biochemistry, Genetics and Molecular Biology pp 10-22; https://doi.org/10.9734/ajbgmb/2021/v9i430224
The aim of this study was to identify the suprior cotton genotypes with improved physiological characteristics under drought conditions. On the bais of root-shoot charcteristics, five genoypes of G. hirsutum were identified as drought tolerant and three genotypes screened out as drought susceptible. The field screening experiment were carried out to validate the findigs of root-shoot screening sudy on the basis of physiological as well as agronomical chracteristics. Both drought tolerant and susceptible genotypes were grown in glass house in pots and followed line x tester mating desighn to cross these genotyps. Parents with their fiftenn offsprings were grown in field conditions in very next cotton season for further analysis. Analysis of variance showed the existence of significant variations among the accessions for all the physiological parameters i.e, osmotic potential, relative water content, cell injury, leaf water potential, excised leaf water loss, stomatal conductance, photosynthesis rate and transpiration rate. Further, among parents line, MS-64 and tester, BH-176 showed superior performance under water scarce conditions. Among the crosses COOKER-315 x Cyto-62 and GS-444 x MPS-11 were better perfomed for high yielding parametrs. The results showed that these two combinations might be helpful to develop drought resistant germplasm on large scale.
Published: 13 November 2021
Asian Journal of Biochemistry, Genetics and Molecular Biology pp 1-9; https://doi.org/10.9734/ajbgmb/2021/v9i430223
Plant viruses have become a major issue to the crop production around the world. These viruses have become an unavoidable limiting factor by causing rigorous crop deficit for those major crops which are economically important. Among these viruses, begomoviruses belonging to family Geminiviridae, have brought the major devastation to both monocots and dicots in tropical and sub-tropical regions. These begomoviruses are transmitted through white fly and cause diseases like mosaic, yellow mosaic, yellow leaf curling, and yellow vein etc. The objective of this study is to evaluate the association between the genetic diversity of begomoviruses and phenotypic data to identify the ideal cotton genotype for breeding. In this study, 30 leaf samples with CLCuD symptoms were analyzed using rolling circular amplification and PCR. Obtained results expressed the presence of begomovirus with its associated satellites (i.e. alpha and betasatellites) in six varieties, association of begomovirus and betasatellites in four varieties and combination of begomovirus with alphasatellite in six varieties. Severe disease symptoms were exhibited with these combinations in selected varieties but betasatellite-begomovirus complex demonstrated a deadly impact. Few varieties expressed the resistance against the begomoviruses, so these varieties can further be manipulated for breeding.
Published: 2 November 2021
Asian Journal of Biochemistry, Genetics and Molecular Biology pp 45-62; https://doi.org/10.9734/ajbgmb/2021/v9i330221
This study was conducted to evaluate the heritability methods, the genes number equations and comparison between them, as well as multivariate analysis of cotton yield and its components traits in the two crosses G.85 x TNB and G.86 x Suvin. Broad sense heritability (BSH) using Mahmud & Kramer (1951), Burton (1951), Weber & Moorthy (1952), Modified Weber & Moorthy (1952), Briggs & Krowles (1967), Mather & Jinks (1971), Lawrence & Jinks (1973) and Kotecha & Zimmerman (1978) methods, as well as narrow sense heritability using Warner (1952) and Modified Warner (1952) methods were calculated. The methods of BSH and NSH showed high values (BSH < 0.60) and significant for yield and yield components traits in the two crosses. For BSH estimations, the highest values by Mahmood & Kramer and Burton methods and the lowest values by Mod.Weber & Moorthy were registered for most studied traits. Estimates of genes number affecting traits were obtained with Chen & Line (1995). The genes number values by equation N3 were much higher than the other equations (close to each other or slightly different) for all studied traits in the two crosses. Based on the ranks method and cluster analysis suggested that there are differences between most the methods of BSH and genes number estimations. The methods of Mather & Jinks and Lawrence & Jinks gave the same values, the two methods of Mahmud & Kramer and Briggs & Krowles as well as the two methods Weber & Moorthy and Kotecha & Zimmerman showed equal or close values for the studied traits in the two crosses. While, the others methods of BSH had difference with these methods and with from each other. These methods are calculated based on the components of variance, so a change in each component of the variance can affect it. Thus, these methods differ with respect to the calculation of an environmental variance. According to principal component analysis (PC), the PC1 and PC2 had mainly distinguished the generations in different groups. The PC1 and PC2 contributed towards 86.29% and 92.36% of cumulative variability in the two crosses G.85 x TNB and G.86 x Suvin, respectively, and the PC1 exhibited Eigen value >1 for all studied traits in the six populations. According to biplot and based on the all populations, the PCs with the highest variability showed positive correlation to yield and its components, but, they differed in their degree of significance/insignificant and consistency in quantity. The PC of the relationship between the six generations revealed that the most appropriate generations for selecting these traits were BC1 generation in the cross G.85 x TNB as well as F2 and BC1 generations in the cross G.86 x Suvin. Backcrossing may be done for 2–5 cycles (BC2 – BC5) at Suvin parent for improving cotton yield in Egypt.
Published: 1 November 2021
Asian Journal of Biochemistry, Genetics and Molecular Biology pp 34-44; https://doi.org/10.9734/ajbgmb/2021/v9i330220
The green synthesis of nanoparticles has attracted the attention of scientific communities due to their simple, economical, and environment-friendly properties. This study focuses on the biological synthesis of zinc oxide nanoparticles (ZnONPs) using an aqueous extract of Moringa Oleifera as a reducing and stabilizing agent. The formation, structure, and other physical and chemical properties of ZnONPs have been extensively studied using various microscopy and spectroscopic techniques. The biogenic synthesis of ZnONPs was confirmed by UV-visible (UV-Vis) spectrophotometer analysis and further characterized by Fourier transform infrared (FTIR), X-ray diffraction (XRD) analysis, and Scanning electron microscopy (SEM). Potential antibacterial and antioxidant activity for ZnONPs were also studied. A sharp peak at 450 nm was observed by UV-Vis analysis, while FTIR analysis showed the presence of -O-H-, -C=C-and -C-H- stretching. SEM analysis revealed that ZnONPs were cubic and hexagonal with500 nmto 1µmsize. The results of antimicrobial activity presented that the zone of inhibition of ZnONPs against Pseudomonas aeruginosa ATCC25923, Bacillus subtilis ATCC6633, Klebsiella pneumoniae ATCC4617, and Escherichia coli ATCC15224 were in the range of 16-36 mm. The antioxidant potential was evaluated by DPPH assay and the IC50 value was 144.59 µg/mL. This study provides an ecofriendly green approach for ZnONPs synthesis with less time and energy consumption.
Published: 26 October 2021
Asian Journal of Biochemistry, Genetics and Molecular Biology pp 20-33; https://doi.org/10.9734/ajbgmb/2021/v9i330219
Aims: Here, we describe a novel way to produce an endo-1,4-beta-xylanase from Aspergillus clavatus using paper and pulp industry waste. Methodology: Optimal Aspergillus clavatus NRRL1 cultivation conditions were evaluated using minimal medium with different concentrations (1 to 10%) of paper sludge pretreated with HCl, during different periods (1 to 14 days), with different pH values (3.0; 3.5; 4.0; 4.5; 5.0; 5.5; 6.0; 6.5; 7.0; 7.5 and 8.0), different temperatures (25, 30, 35, and 40 ºC) and different mixing conditions (static and stirring). After that, the enzyme activity was determined by DNS (3,5-dinitrosalicylic acid), protein concentration was quantified by Bradford, SDS-PAGE was performed to evaluate the molecular mass, and TLC observed hydrolysis products. Results: The enzyme showed a molecular mass of 25 kDa, and its production has been highly improved by optimizing culture conditions. The best activity of this enzyme was obtained when A. clavatus was cultivated for 5 days, at 120 rpm, 5% paper sludge, pH 6.0, and 35 ºC. The degradation profile of the beechwood xylan by the crude extract containing the GH11 xylanase showed xylotriose as the main product, but xylotetraose and xylobiose were also produced in significant amounts. Conclusion: In addition to the fact that this xylanase has the property of producing large quantities of XOS (mainly xylotriose), it has the advantage of being obtained from recyclable waste of the pulp and paper industry. These facts confer great potential for future biotechnological and industrial applications.
Published: 21 October 2021
Asian Journal of Biochemistry, Genetics and Molecular Biology pp 14-19; https://doi.org/10.9734/ajbgmb/2021/v9i330217
Action bitters has been seen not to have nephro-toxic effects on the kidney. However, this study evaluated the effects of sachet packaged action bitters on the kidney of apparently healthy subjects. Blood sample was collected from 20 subjects. Basal blood sample and the blood samples collected after 2 hours of intake of action bitters by subjects were analyzed. The parameters analyzed include sodium, potassium, urea and creatinine using the colorimetric method of analysis and results subjected further to statistical analysis using the GraphPad Prism Version 8.02.Basal results of the renal indices obtained showed the values to be; 144.16 ± 8.89 mmol/L, 3.81 ± 0.57 mmol/L, 25.70 ± 5.66 mg/dL and 1.05 ± 0.38 mg/dL for sodium, potassium, urea and creatinine respectively while the results obtained from the subjects two(2) hours after the intake of action bitters were; 128.18 ± 11.05 mmol/L, 2.93 ± 0.57 mmol/L, 25.34 ± 4.74 mg/dL and 1.51 ± 0.75 mg/dL for sodium. potassium, urea and creatinine values respectively. The comparison of the basal and treated sample showed significant differences in the values of sodium, potassium and creatinine (P=0.05) while the urea value was not significantly different. The mean value for sodium and potassium in the treated subjects were significantly decreased when compared to the value gotten at the basal state where the action bitter has not been consumed by the subject whereas the creatinine value was significantly increased in the sample of the treated subjects compared to the value of the basal sample. This implies that exposure to a higher dose of action bitters might be detrimental to renal function in the body hence, the dose of bitters and its consumption by humans should be monitored in order to protect against any adverse effect, and subsequent malfunctioning of the kidney.
Published: 14 October 2021
Asian Journal of Biochemistry, Genetics and Molecular Biology pp 1-13; https://doi.org/10.9734/ajbgmb/2021/v9i330216
Turmeric (Curcuma longa) L rhizome powder (TRP) was commonly reported to have antiulcerogenic and non-toxicity effects. However, the scientific evidence showing the effectiveness of turmeric in the treatment of gastric ulcer and its non-toxicity effect are controversial. The aim of the study was to investigate the effects of different percentages of turmeric rhizome powder supplemented diet on toxicity induced by indomethacin in Wistar rats. This study investigated the effects of TRP formulated diet on the activities of blood enzymes in indomethacin-induced gastric ulcerated Wistar rats. This investigation was carried out through a 28-day experiment using corn-starch flour meal-based diet containing four levels of TRP (1%, 2%, 5% and 10%) as treatments with five replicates in a completely randomized design. The remaining three groups were fed with basal diet, one group received standard drug, another received no treatment but induced while the last group received no treatment and not induced. 35 male Wistar rats weighing 150-200 g were housed in seven cages and received feed and water ad-libitum. At the end of the experiment, all the animals were sacrificed, blood and some organs were collected and evaluated for hepatoxicity and nephrotoxicity induced by indomethacin (60mg/kg bw). Measurements of serum, kidney and liver alanine aminotransferase (ALT), aspartate aminotransferase (AST) and alkaline phosphatase (ALP) were performed. Statistical evaluation of the results at a p < 0.05 showed significantly elevated values (P ≤ 0.05) of these enzymes in the kidney of rats in groups B, C, E and G when compared with group F. Increase in kidney ALT and AST activities of animals in groups A, C and D was detected in comparison with group F. Furthermore, there was increase in hepatic ALT and ALP activities of animals in groups A, B, C, D and E compared with animals in group F but a significant increase (P ≤ 0.05) in group G in comparison with group F. Likewise, there was significant increase (P ≤ 0.05) in liver AST activities of rats in groups A, B, C, E and G compared with group F, however, insignificant increase (P ≤ 0.05) was observed in animals in group D in comparison with rats in group F. Indomethacin induced rats (group F) showed a significant increase in serum levels of ALT, AST and ALP compared with rats in groups E and G in all the groups but those fed on 1%, 2%, 5% and 10% turmeric supplemented diet showed decrease in comparison with group F. The increased levels of these enzymes in the serum of animals in ulcerogenic group and some in group D (10%TRP group) could be a sign of tissue injury due to relative toxicity of indomethacin induction in animal model and deleterious effect of turmeric rhizome powder at large concentration. However, decrease levels of these enzymes in pretreated groups could indicate the attenuating potential of turmeric at moderate dose against toxicity effect of indomethacin induction. Therefore, turmeric rhizome powder should be consumed with caution and its percentage in the whole recipe should not be up to 10% (100g/kg).
Published: 1 October 2021
Asian Journal of Biochemistry, Genetics and Molecular Biology pp 36-43; https://doi.org/10.9734/ajbgmb/2021/v9i230214
Aim: To investigate the effect of Hexane extract of Chromolaena odorata (HECO) on cyanide induced hematotoxicity in male Albino Wistar rats. Methodology: Thirty-five (35) male albino rats weighing between 100g and 150g were distributed randomly into 7 groups of 5 rats each. Group 1 which comprised of normal rats received distilled water and served as the normal control, while groups 2-7 comprised of rats exposed to Potassium cyanide (KCN) (3 mg/kg). Group 2 received no treatment and served as the negative control. Groups 3, 4 and 5 received 100, 150 and 200 mg/kg of HECO respectively. Group 6 received 200 mg/kg HECO and 200 mg/kg sodium thiosulphate while group 7 was treated with a sodium thiosulphate (200 mg/kg), an established antidote, and served as the positive control. All administrations were done via the oral route and lasted for 14 days. Complete blood count was conducted after the experimental period. Data were analyzed using one-way analysis of variance, followed by Tukeys multiple comparisons test and P < .05 was considered significant. Results: Results obtained indicate Red cell indices and white blood cell and differential were all significantly raised (P < .05) in treated rats relative to the negative control rats. Platelet value and Mean corpuscular volume were raised and lowered respectively during induction by the treatments, however, no statistical significance (P < .05) was observed. The results therefore suggest that C. odorata could be valuable in the management of the hematological changes induced by cyanide. Conclusion: HECO reversed the adverse hematological changes in rats induced by cyanide at 100, 150 and 200 doses, with the 200 mg dose being more effective.
Published: 21 September 2021
Asian Journal of Biochemistry, Genetics and Molecular Biology pp 28-35; https://doi.org/10.9734/ajbgmb/2021/v9i230213
Cellulase is one of the most economically important enzyme, which aids in catalyzing cellulolysis, the decomposition of cellulose and other related polysaccharides. So the demand/importance of this enzyme in both domestic and commercial sectors cannot be over emphasized. In this research cellulase-producing bacteria were isolated from soil around sugarcane waste dumping area, which was identified to be P. fulorescens after numerous biochemical and microbiological analysis. The bacteria were then grown and used to ferment certain biomass, with the aim of using the organisms to produce the cellulase enzyme. The total protein/cellulase enzyme activity of the medium was ascertained. Optimization/characterization for maximum cellulase activity was done by varying the temperature, pH, enzyme concentration and substrate concentration, in which the optimum condition for cellulase production was ascertain to be at a temperature and pH of 40˚C and pH 7 respectively. SDS-PAGE electrophoresis was carried out to determine and reconfirm the presence and molecular weight of the isolated enzyme. The estimated extrapolated molecular weight of the enzyme was found to be 13.5KDa.