Journal of Microbiology and Biotechnology Research 

About: Journal of Microbiology and Biotechnology Research is an academic journal. The journal publishes majorly in the area(s): Fermentation & Antimicrobial. It has an ISSN identifier of 2231-3168. It is also open access. Over the lifetime, 441 publications have been published receiving 3224 citations.

A review: Natural products from plant associated endophytic fungi

Abstract: This review describes information on the role of endophytic microorganisms and some of naturally occurring bioactive compounds obtained from endophytic fungi isolated from various host plants. In the recent past years, a great deal of information on the role of endophytes in nature has been collected. The main topics addressed are isolation of endophytes, host endophyte relationship, fungal endophyte, their diversity, physiological role of endophyte, biological activities and chemistry. Key words: Endophytic microorganisms, biological activity, endophyte diversity, antioxidation activity.

Isolation of phosphate solubilizing microorganism (PSMs) from soil.

Abstract: Plants acquire phosphorus from soil solution as phosphate anion. It is the least mobile element in plant and soil contrary to other macronutrients. It precipitates in soil as orthophosphate or is absorbed by Fe and Al oxides through legend exchange. Phosphorus solubilizing bacteria play role in phosphorus nutrition by enhancing its availability to plants through release from inorganic and organic soil P pools by solubilization and mineralization. Principal mechanism in soil for mineral phosphate solubilization is lowering of soil pH by microbial production of organic acids and mineralization of organic P by acid Phosphatase. Use of phosphorus solubilizing bacteria as inoculants increases P uptake. These bacteria also increase prospects of using phosphatic rocks in crop production. Greater efficiency of P solubilizing bacteria has been shown through co-inoculation with other beneficial bacteria and mycorrhiza. This article incorporates the recent developments on microbial P solubilization into classical knowledge on the subject. Keywords: Soil phosphorus, Solubilization, Mineralization, Organic acids, Soil pH, Bacillus, Pseudomonas.

A review of Female Infertility; important etiological factors and management

Abstract: The difficulty to conceive or subfertility constitutes a major social and psychological burden amongst couples especially in African women. In Nigeria, it is estimated that female factors and unexplained infertility generally accounts for 50-80% of cases of infertility and thus the need to review the various works done by researchers. In this review the contributions of the different etiological factors in female infertility was looked into and attempt was made to update the available information on the management of female infertility. The main aim of this review is to generate information which could act as guideline in the evaluation of female infertility. From the reviewed studies on female infertility it is concluded that a loss of 5-10 % of body weight in obese anovulatory infertile women, maintenance of a healthy lifestyle, prevention and prompt treatment of sexually transmitted diseases and not delaying parenthood are amongst the purported good preventive measures to tackle infertility amongst infertile women. Key words: Female infertility, hypothyroidism, anovulation, hyperprolactinemia,

An investigation on heavy metal tolerance and antibiotic resistance properties of bacterial strain Bacillus sp. isolated from municipal waste

Abstract: The objective of our present study was to isolate heavy metal tolerant and antibiotic resistant microorganisms, the site selected being the K.M.C.’s Waste Dumping Yard, Dhapa, Kolkata, West Bengal, India, based on the extent of pollutants being discharged and the land waterways being polluted by the effluents and waste being dumped by the household and numerous industrial units. The isolated strain showed amylase & protease positive, spore forming, Grampositive bacilli and exhibited growth in wide range of substrates, temperature (30°C-40°C) & pH (6.0-11.0). Based on the 16S rDNA molecular technique, it was found that the isolate was Bacillus sp. and has a mega plasmid. Moreover it was found to grow in presence of a wide range of metals namely nickel, cadmium, chromium and cobalt in the order Cd2+> Cr6+> Ni2+> Co2+. And also it was observed that the isolate was resistant to a wide range of antibiotics namely Kanamycin (30μg/disc), Ampicillin (25μg/disc) and Methicillin (5μg/disc). Plasmid curing result showed the loss of antibiotic and heavy metal resistance profile in the isolated strain and confirms a relationship between antibiotic and heavy metal resistance with plasmid. Heavy metal tolerance test showed maximum microbial tolerance to cadmium and minimum tolerance to cobalt. This heavy metal resistant organism could be a potential agent for bioremediation of heavy metals polluted environment. Keywords: Bacillus sp, heavy metals, MTC, antibiotic resistance, plasmid curing, 16S rDNA gene sequencing.

Biodegradation of low density polyethylene (LDPE) by fungi isolated from municipal landfill area.

Abstract: The present article reveals the biodegradation of low density polyethylene by two fungal strains isolated from municipal landfill area. The degrading ability of the two fungal strains was evaluated by performing colonization studies, SEM and Sturm test analysis. Colonization studies on LDPE film was performed over a period of one month by measuring the fresh weight of the fungus. LDPE films colonized by fungus were analysed by scanning electron microscope (SEM) for any structural changes caused in the LDPE films. LDPE degradation by the fungal strains was further evaluated by measuring the CO2 evolved which was calculated gravimetrically and volumetrically by Sturm test. The isolated fungi showed a promising degradation pattern as analyzed by the above mentioned three methods. Fungi were identified as Mucor circinilloides and Aspergillus flavus. Keywords: Biodegradation, LDPE, Scanning electron microscopy, Sturm test, Mucor, Aspergillus.