Volume-5 ~ Issue-6
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Abstract: Present paper deals with assessment of Arbuscular mycorrhizal fungi (AM) associated with different populations of Pandanus fascicularis found in coastal region of Konkan Maharashtra. All samples of P. fascicularis roots were colonized by AM fungi. The mean percentage of root length colonization ranged from 39% to 74%. Amongst the thirteen AM fungal morphospecies Kuklospora colombiana was the most widely distributed species. Species richness of AM fungi ranged from 3 to 6. Based on spore density and relative abundance, three species were dominant viz., Acaulospora bireticulata, A. scrobiculata, and K. colombiana. Details of AM fungal status in P. fascicularis are discussed in present paper.
Keywords - Arbuscular Mycorrhizal Fungi, Pandanus fascicularis, Relative abundance, Species diversity, Spore density.
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Abstract: The pot experiments were conducted to study influence of sodium chloride salinity on Native Arbuscular Mycorrhizal fungal consortium (NAMC) with respect to three Hibiscus species viz., H. cannabinus, H. sabdariffa and H. tiliaceus (Fam. Malvaceae). All three plant species exhibited appreciable colonization and showed excellent salt tolerance potential at 300 mM NaCl treatment. Results obtained revealed that Arbuscular Mycorrhizal fungal (AM) species spore recovery (SR) was in the range of 50-100% in treated plants. AM species studied in present paper were viz., Claroideoglomus etunicatum, Sclerocystis coremoides (H. cannabinus); Acaulospora myriocarpa, Acaulospora spp. (H. sabdariffa) and Acaulospora foveata, Acaulospora spp., C. etunicatum, Glomus botryoides, G. caledonicum & G. formosanum (H. tiliaceus).
Keywords - AM, Hibiscus, root colonization, NAMC, salinity.
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Abstract: Health concerns over pre-exposure prophylactic abuse of drugs have been reported. However, histological perspectives are not very common. This work is designed to investigate the morphological alteration of visceral organs (kidney and liver) of albino Wister rats pre-exposed to prophylactic consumption of sulfonamide based drugs. 30 albino rats of both sexes, with average weight of 198.50g were randomly selected into 4 treatment cages (A, B, C & D) and a Control cage (E) making a total of 6 rats per cage. Graded dose of Laridox(sp) were orally administered to the rats. Cages A-D received 1.0, 2.0, 3.0, 4.0 mg/kg body weight respectively. Cage E serves as the control group and received no drug treatment. Commercially purchased drinking water, standard top feed(R) was given ad libitum, for 21 days. The animals were weighed before and after commencement of drug administration. Dullness and restlessness were observed and was carefully noted on all treated animals, but were marked in high dose treated animals in (Cages C and D). On day 22, the animals were sacrificed by cervical dislocation; gross examination was done and was quickly fixed in 10% buffered neutral formalin for routine histological study. Cut tissue at 3-5mm was processed according to paraffin embedding technique while section was cut at 3-5microns using haematoxylin and eosin method for light microscopy. Grossly, the organs of the high dose treatment animals in Cage C and D showed no apparent changes while histological findings after H&E method indicated that the treatment sections showed inflammatory cells, congested glomerulus, haematoma, thickening of the interstitial cells and vacuolation with congestive and tubular necrosis as compared to the control group. Decrease in body weights of the rats at the end of the study were statistically significant (p < 0.05) in the treatment groups B, C and D. Hence, this study shows that pre-exposure prophylactic consumption of sulfonamide based drugs used at a higher doses may have such cellular defects /adverse effects on the visceral organs of human in a similar circumstances.
Keywords: Histological technique, Laridox(SP), Prophylaxis, Pyrimethamine and Sulfadoxine.
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Abstract: Present study was made on 50 freshwater wild Puntius conchonius (Hamilton - Buchanan) of various sizes ranging from a total length of 5.2 cm to 7.6 cm and weighing 1.6 gm to 7.1 gm. They were sampled from different lentic and lotic water bodies of Nagaland, to investigate the weight-length relationship. Each fish was measured and weight was taken. Log transformed regressions were used to test the growth trend. It was observed that growth in weight is not proportional to the cube of its length. Coefficient of correlation values for both male and female as well as for mixed population were found to be highly significant.
Key Words : Puntius conchonius, weight-length relationship, predictive equations.
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