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Screening for Bio-flocculant Producing Bacterial Strains from Asa River in Ilorin Kwara State

, Q., Wang, H., Chen, R., He, N., 2010. Production and characterization of a novel bioflocculant from Bacillus licheniformis . Applied Environmental Microbiology. 76 (9): 2778-2782. Yue, L., Ma, C., Chi, Z., 2006. Bioflocculant produced by Klebsiella sp. MYC and its application in the treatment of oil-field produced water. Journal of Ocean University of China, 5 :333 Zhang, J., Liu, Z., Wang, S., Jiang, P., 2002. Characterization of a bioflocculant produced by the marine myxobacterium Nannocystis sp. NU-2. Applied Microbiology and Biotechnology

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Oxidative Stress Induced DNA Damage and Reproductive Toxicity in Male Albino Mice Orally Exposed to Sorbitol

hepatocyte (DNA repair assay). Food and Chemical Toxicology, 38 (4):335-338. Jeyendran, R.S., Sehrader, S.M., van der Ven, H.H., 1986. Association of the in-vitro fertilizing capacity of human spermatozoa with sperm morphology as assessed by three classification systems. Human Reproduction, 1 :305-308. Johannes, C., Boes, R., Obe, G., 1992. Uptake of the restriction endonuclease AluI by Chinese hamster ovary cells measured by frequencies of induced chromosomal aberrations: effect of hypertonic concentrations of glycerol and sorbitol. Mutagenesis, 7 :225

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Green Nanotechnology in Nigeria: The Research Landscape, Challenges and Prospects

. Journal of Applied Research and Technology, 14 : 38-46. Elemike, E.E., Fayemi, O.E., Ekennia, A.C., Onwudiwe, D.C., Ebenso, E.E., 2017d, Silver nanoparticles mediated by Costus afer leaf extract: Synthesis, antibacterial, antioxidant and electrochemical properties. Molecules, 22 : 701. Elemike, E.E., Ogbe, M.A., Onwudiwe, D.C., Ayeni, M.B., Mgbemena, C.O., 2018a, Kinetics of fresh and fermented palm wine ( Raphia hookeri ) biosynthesized silver nanoparticles and their antibacterial activities. Journal of the Chinese Advanced Materials Society, 6 : 17

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Genetic Diversity Among Strains of Pleurotus species (oyster mushroom) Using Morphometric Traits Under Varied Temperature and pH

. Fungi (Suppl) ., 12, 1–2. Sandhya, R., Meera, P., Tewari, R.P., Krishna, V., 2006, Development of sporeless/low sporingstrains of Pleurotus through mutation. World J. Microbiol. Biotechnol., 22 : 1021-1025. Solak, Z.S., and Gupta, D., 2001. Combining ability and heterosis studies for seed yield and its components in sesame.Ses. Sunflow. News lett ., 16 , 6-9. Yu, L., Shouxian, W., Yonggang, Y., and Feng, X., 2013. Evaluation of genetic diversity of Chinese Pleurotusostreatus cultivars using DNA sequencing technology. Annal Microbiol ., 63

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Vulnerability Assessment: A Geospatial Bio-accessibility Approach Using Polycyclic Aromatic Hydrocarbons Concentration of Soils in Lagos, Nigeria.

. Geographic Information Systems. Comput. Stat., 1,167-186. Yu, W., Liu, R., Wang, J., Xu, F. and Shen, Z. 2015. Source apportionment of PAHs in surface sediments using positive matrix factorization combined with GIS for the estuarine area of the Yangtze River, China. Chemosphere, 134, 263-271.

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Nova Biotechnologica et Chimica
The Journal of University of SS. Cyril and Methodius
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Epidemiological Surveillance of Influenza Virus Matrix Gene in Pigs, in Lagos, Nigeria, 2015-2016

-like H1N1 and novel ressortant H1N2 influenza viruses from pigs in China. Biochemical and biophysical research communications 386, 278-283.

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The Evaluation of Heavy Metal Toxicity in Plants Using the Biochemical Tests

Abstract

The evaluation of the toxicity and stress caused by heavy metals on plants is very important part of the phytoremediation research. Several physiological parameters can be used to assess the heavy metalinduced stress such as germination, plant growth and biomass production, photosynthetic pigments, antioxidant enzymes or antioxidants. Published results of measured physiological parameters in plants exposed to metals were characterized from of the negative effects of metals point of view and compared with the experimental study of the metal (Cu, Cd, Zn) toxicity in flax (Linum usitatissimum) and China aster (Callistephus chinensis) using the biochemical tests under the laboratory conditions. The germination and biomass production of C. chinensis significantly decreased with the increase of metal concentration which is considered a very typical response, however in L. usitatissimum slight stimulation of germination and biomass production at low metal content was observed. From the two studied plants C. chinensis expressed typical symptoms of the heavy metal toxicity including the decrease of total chlorophyll, chlorophylls a, b. On the contrary, heavy metal ions affected positively the physiological parameters of L. usitatissimum when low metal concentrations were added for example slight increase of the chlorophyll concentration in leaves was recorded. The decrease of the chlorophyll content was observed only at the high metal content. On the other hand, the typical response of plants on the heavy metal stress - the increase in peroxidase activity - was observed only for L. usitatissimum but not for C. chinensis that in all other tests showed significant toxicity symptoms. So if only one physiological parameter would be considered incorrect interpretation could be concluded. With the increase of phytoremediation practical applications the more systematic tests of heavy metal stress are necessary to help scientists working in that field correctly interpret their results and understand the plant behaviour.

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The first evidence of Acidithiobacillus albertensis in weathered ore samples from active gold mine Hodruša-Hámre (Slovakia)

References Altschul SF, Gish W, Miller W, Myers EW, Lipman DJ (1990) Basic local alignment search tool. J. Mol. Biol. 215: 403-410. Bryant RD, McGroarty KM, Costerton JW, Laishley EJ (1983) Isolation and characterization of a new acidophilic Thiobacillus species ( T. albertis ). Can. J. Microbiol. 29: 1159-1170. Chen H, Yang B, Chen X (2009) Identification and characterization of four strains of Acidithiobacillus ferooxidans isolated from different sites in China. Microbiol. Res. 164: 613-623. Chovan M, Jágerský I, Delaney V, Žitňan P

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