March 2015
Alternaria epidemic of apple in Kashmir
During the months of July-August 2013, apple orchards of the valley were suddenly struck with Alternaria disease which was so far considered a disease of minor importance as compared to apple scab. The disease spread like wild fire leading to very high severity and often resulted in extensive defoliation and fruit fall in almost all the orchards through the valley, resulting into a widespread epidemic. The various...
March 2015
Occurrence and abundance of arbuscular mycorrhizal fungi (AMF) in agroforestry systems of Rubavu and Bugesera Districts in Rwanda
Arbuscular mycorrhizal fungi (AMF) help to facilitate mobilization of nutrients from soil to plant. The study was carried out in humid Rubavu and semi-arid Bugesera districts in Rwanda. We hypothesized that the presence of tree species in farming systems enhances mycorrhizal fungal density. The occurrence and abundance of AMF in the soil around main agroforestry tree species in these regions was studied. Tree species in...
March 2015
Isolation and classical identification of potent extracellular alkaline protease producing alkalophilic Bacillus sp from coastal regions of Tamil Nadu
Microbial proteases are vastly demanded industrial enzyme with broad commercial application in various sectors. Naturally, the bacterial strains are well known for their ability to excrete enzymes into the environment. The current work was undertaken to isolate and characterize an effective extracellular alkaline protease producing Bacillus sp. A total of twenty nine bacterial strains were isolated from coastal regions...
March 2015
Selenium stress in Ganoderma lucidum: A scanning electron microscopy appraisal
The present investigation explores the effect of selenium supplementation on radial growth and ultrastructural alterations in the hyphae and spores of Ganoderma lucidum. A concentration dependent decrease in radial growth was observed on culturing G. lucidum on sodium selenate supplemented mushroom minimal agar post 24 h. However, in comparison to control, selenium supplementation slightly increased diameter of radial...
March 2015
Choice of DNA extraction protocols from Gram negative and positive bacteria and directly from the soil
DNA extraction is a fundamentally important step for the implementation of genotypic techniques in microbial identification, and the use of such techniques has become essential for the analysis of soil microbial diversity. Considering culture independent methodologies, it is still necessary to ensure that DNA is extracted in appropriate amounts and that extracted DNA is inhibitor-free. This study aimed at selecting a...
March 2015
Trickle and micro sprinkler fertigation on soil microbial population in cocoa (Theobroma cacao L.)
Cocoa, the ‘Food of Gods’ is one of the important plantation crops consumed worldwide and around 40 - 50 million people depend on cocoa for their livelihood. An experiment was conducted during 2010 and 2011 to investigate the impact of N, P and K fertilizers through fertigation on soil microbial population of cocoa at Tamil Nadu Agricultural University, India. The study was laid out in randomized block...
March 2015
Characterization of probiotic bacteria isolated from regional chicken feces
The present study was aimed to isolate probiotic bacteria from poultry feces and to study their physiological and biochemical as well as probiotic properties. Analysis of morphological, physiological and biochemical properties confirmed that all the bacteria were Gram positive, endospore negative, catalase negative and non-motile those are the characteristics of typical probiotics. Sugar fermentation profiling of 16...
March 2015
Biological corrosion inhibition of steel alloy by pani nano fiber
Sulfate-reducing bacteria are recognized as a major group of microorganisms linked to anaerobic corrosion. Polyaniline is a good inhibitor for microbially influenced corrosion. The polyaniline nanofibres were prepared by interfacial polymerization method and the prepared polyaniline nanofibres were coated on steel coupons. These steel coupons were used for corrosion studies using sulphate reducing bacteria and compared...
March 2015
Effect of adding different levels of probiotics to broilers’ diets on gastrointestinal tract development and production performance
Probiotics are used as alternative in diets. Probiotics, as defined by many authors, are food additives consisting of living microorganisms that have beneficial effects on the physiology and health of organisms. Microorganisms are most commonly used by lactic acid bacteria which are part of the bio- preparations, for poultry animals in improving their health and production parameters. The objective of this work is to...
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