Anwesha Ghosh

Anwesha Ghosh
Indian Institute of Science Education and Research Kolkata · Centre for Climate and Environmental Studies

PhD

About

33
Publications
10,920
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161
Citations

Publications

Publications (33)
Article
Full-text available
In mangrove environments, bacterioplankton communities constitute an important component of aquatic biota and play a major role in ecosystem processes. Variability of bacterioplankton communities from Sundarbans mangrove, located in the Indian subcontinent in South Asia and sits on the apex of Bay of Bengal, was investigated over monsoon and post-m...
Article
Full-text available
To evaluate the comparative antibacterial activity of leucine-based cationic polymers having linear, hyperbranched, and star architectures containing both hydrophilic and hydrophobic segments against Gram-negative bacterium, Escherichia coli (E. coli), herein we performed zone of inhibition study, minimum inhibitory concentration (MIC) calculation,...
Article
Estuaries provide an ideal niche to study structure and function of bacterioplankton communities owing to the presence of a multitude of environmental stressors. Bacterioplankton community structures from nine global estuaries were compared to understand their broad-scale biogeographic patterns. Bacterioplankton community structure from four estuar...
Article
Full-text available
Synthetic polymer-based antimicrobial materials destroy conventional antibiotic resistant microorganisms. Although these antibacterial polymers imitate the properties of antimicrobial peptides (AMPs), their effect on bacterial cell morphology has not been studied in detail. To investigate the morphology change of a bacterial cell in the presence of...
Article
Arsenic (As) contamination is a major global environmental concern with widespread effects on health of living organisms including humans. In this review, the occurrence (sources and forms) of As representing diverse aquatic habitats ranging from groundwater to marine environment has been detailed. We have provided a mechanistic synopsis on direct...
Article
Full-text available
Estuaries are one of the most productive ecosystems and their productivity is maintained by resident microbial communities. Recent alterations driven by climate change have further escalated these stressors leading to the propagation of traits such as antibiotic resistance and heavy metal resistance in microbial communities. Surface water samples f...
Article
The River Ganga is reeling from pressures of rapid urbanization and resulting anthropogenic forcings. In this study, phytoplankton community assemblages were deduced from the Dakshineswar site located in the lower stretch of River Ganga to understand the health of this river. Surface water samples were collected from six stations of Dakshineswar sp...
Article
The Bay of Bengal receives nitrogen inputs from multiple sources and the potential role of nitrogen-metabolizing microbial communities in the surface water is not well understood. The nitrogen budget estimate shows a deficit of 4.7 ± 2.4 Tg N yr-1, suggesting a significant role of dissolved organic nitrogen remineralization in fuelling ecosystem pr...
Article
Full-text available
Tannic acid is a secondary compound produced by vascular plants and is a major component of mangrove litterfall. Tannic acid is water soluble, leaches out from mangrove litterfall and contributes to DOC and DON pools in adjacent estuaries. About 50% of the litterfall may be degraded and channelized into the marine microbial loop. The influence of t...
Chapter
In the modern era of microbial ecology studies, use of high-throughput methods for culture-independent assessment of microbial communities from contaminated sites can pave the way of development of sustainable bioremediation approaches. Numerous culture-independent techniques involving molecular tools can provide a mechanistic understanding of the...
Article
Rapid human pressure in semi-urban and urban areas along with increasing industrial activities has resulted in release of untreated sewage and other forms of pollutants into major rivers globally including in the Ganga. In this study, nine sites represented by 59 stations along the lower stretch of the River Ganga were monitored seasonally to under...
Article
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The authors would like to correct the errors in the publication of the original article. The corrected details are given below.
Article
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Accurately evaluating ecosystem status is vital for effective conservation. The Red List of Ecosystems (RLE) from the International Union for the Conservation of Nature (IUCN) is the global standard for assessing the risk of ecosystem collapse. Such tools are particularly needed for large, dynamic ecosystem complexes, such as the Indian Sundarbans...
Article
Full-text available
Formation of insulin amyloid fibrils is considered as the hallmarks of several debilitating pathological conditions. To develop effective therapeutics that are able to control the amyloidogenesis process and inhibit fibril formation, herein we have synthesized side-chain proline (Pro)-based homopolymer and block copolymers via reversible addition-f...
Article
Full-text available
The Bhagirathi-Hooghly River, part of the River Ganga, flows along densely urbanized areas in West Bengal, India. The river water is extensively used for household activities, human consumption including bathing, social purposes and multifaceted industrial usage. As a result of discharge of untreated municipal sewage and effluents from industries t...
Article
Full-text available
A new species of Vibrio (annotated as SBOTS_Iso1) was isolated in August 2014 from the Stn1 located in Chemaguri creek of Sundarbans mangrove ecoregion and taxonomically characterized using a polyphasic approach. Phenotypic analysis including biochemical tests and growth across a wide range of salinities indicated the typical estuarine characterist...
Article
Full-text available
Antibacterial activity against a series of potentially pathogenic bacterial strains was evaluated in both liquid and solid matrices using ciprofloxacin (a well-known fluoroquonolone antibiotic) based polymeric systems with pendant cationic charge and zwitterionic units. The ciprofloxacin containing polymeric architecture was designed to incorporate...
Article
Full-text available
Design of new drug material through modification of some well known antibiotics to combat pathogenic bacteria must include a complete understanding of matrix regulation, since the human body consists of majorly three types of matrices; solid, semisolid and liquid which has a tendency to regulate antibacterial efficacy along with bactericidal mechan...
Chapter
This chapter provides an overview of tools used for assessment of microbial diversity in natural environments with a focus on next generation sequencing data analysis.
Article
Full-text available
Next generation sequencing using platforms such as Illumina MiSeq provides a deeper insight into the structure and function of bacterioplankton communities in coastal ecosystems compared to traditional molecular techniques such as clone library approach which incorporates Sanger sequencing. In this study, structure of bacterioplankton communities w...

Projects

Projects (2)
Project
To unravel structural and functional complexity of biological systems within a mangrove ecosystem