BASHEER PA - Academia.edu (original) (raw)

Papers by BASHEER PA

This study focuses on the isolation and biodegradation of PAHs by microorganisms associated with ... more This study focuses on the isolation and biodegradation of PAHs by microorganisms associated with the sediments of automobile workshops of Pondicherry. One of the bacterial isolate selectively enriched in these compounds was identified as Rhodococcus ruber based on morphology, 16S rDNA sequencing and phylogenetic characteristics. Biodegradability tests with selected PAHs supplied as sole carbon sourceshowed that Rhodococcus sp. could utilize PAH compoundsin the order of chrysene>dieseloil>benzanthracene>crudeoil>fluorene>fluorant-hene>phenanthrene>dibenzothiophene>naphthalene and anthracene. Absorbance change of mineral medium with phenanthreneat 250ppm, 500ppm and 1000ppm concentration showed a linear increase in growth of the isolate in all the concentrations of phenanthrene. At 250ppm of phenanthrene concentration a lowest average growth of 0.05±0.02 () was observed while the highest optimum growth of 1.02±0.33 () was recorded at 1000ppm concentration of ph...

International Journal of Environmental Science and Technology, 2014

University Journal of Zoology, Rajshahi University, 2007

Research Journal of Environmental Sciences, 2011

Aquatic biosystems, Jan 11, 2013

Species distribution, abundance and diversity of mangrove benthic macroinvertebrate fauna and the... more Species distribution, abundance and diversity of mangrove benthic macroinvertebrate fauna and the relationships to environmental conditions are important parts of understanding the structure and function of mangrove ecosystems. In this study seasonal variation in the distribution of macrobenthos and related environmental parameters were explored at four mangrove stations along the Pondicherry coast of India, from September 2008 to July 2010. Multivariate statistical analyses, including cluster analysis, principal component analysis and non-multidimensional scales plot were employed to help define trophic status, water quality and benthic characteristic at the four monitoring stations. Among the 528 samples collected over 168 ha of mangrove forest 76 species of benthic macroinvertebrate fauna were identified. Macrofauna were mainly composed of deposit feeders, dominated numerically by molluscs and crustaceans. Statistical analyses yielded the following descriptors of benthic macroinv...

We offer a model for the distribution of consumption over categories of expenditure. We developed... more We offer a model for the distribution of consumption over categories of expenditure. We developed this model for consumer demand against the background of analysing price-based substitution between imported and domestically produced products.

Distribution pattern of earthworm fauna in Pondicherry region and its population densities were s... more Distribution pattern of earthworm fauna in Pondicherry region and its population densities were studied. Ten species of earthworms Drawida willsi, D. limella, D. scandens, Pontodrilus bermudensis, Pontoscolex corethrurs, Lampito mauritii, Perionyx excavatus, Eudrilus eugeniae, Octochaetona serrata and O. barnesi belonging to seven genera and six families were noted. Earthworm species diversity in fourteen localities from different habitats is presented. L.

Journal of Environmental Science and Technology, 2012

International Journal of Biodiversity Science, Ecosystems Services & Management, 2011

Due to increasing demand and subsequent pressures on medicinal plants, it is imperative to unders... more Due to increasing demand and subsequent pressures on medicinal plants, it is imperative to understand their distribution and conservation status in their natural habitats. We studied the distribution pattern and current conservation status of six threatened medicinal plants in alpine grassland of Gurez valley, Kashmir, by random quadrate sampling (n = 315) in different habitat types. Informal interviews and group discussions with family elders were held to obtain information on different uses of medicinal plants. Our results indicate that Podophyllum hexandrum Royle is most common and has the highest density, while Picrorhiza kurroa Royle ex Benth and Dactylorhiza hatagirea (D. Don) Soo are least frequent. Flat tableland (FL) situated above the tree line and moist rocky slopes (MR) were the most preferred habitats followed by moist meadow (MM) while the shady slopes (SSs) and flat meadow (FM) (stable) were least preferred. The plant species are used to cure different ailments at a h...

Infection and Immunity, 2010

Hemolytic-uremic syndrome (HUS) is a life-threatening disorder characterized by hemolytic anemia,... more Hemolytic-uremic syndrome (HUS) is a life-threatening disorder characterized by hemolytic anemia, thrombocytopenia, and renal insufficiency. It is caused mainly by infections with enterohemorrhagic Escherichia coli (EHEC). Recently, Shiga toxin 2, the best-studied virulence factor of EHEC, was reported to interact with complement, implying that complement may be involved in the pathogenesis of EHEC-induced HUS. The aim of the present study was to investigate whether or not the serine protease EspP, an important virulence factor of EHEC, interacts with complement proteins. EspP did not have any effect on the integrity of factor H or factor I. However, EspP was shown to cleave purified C3/C3b and C5. Cleavage of the respective complement proteins also occurred in normal human serum (NHS) as a source of C3/C3b or C5 or when purified complement proteins were added to the supernatant of an EspP-producing wild-type strain. Edman degradation allowed unequivocal mapping of all three main C3...

Bangladesh Journal of Agricultural Research, 2009

Environmental Monitoring and Assessment, 2011

Ecology of Food and Nutrition, 2011