03154nas a2200289   4500008004100000022001400041245016500055210006900220260000800289300001200297490000800309520217000317653002002487653001102507653001702518653002402535653001102559100001902570700001602589700002302605700002102628700001802649700002302667700002302690700002202713856012902735       2019                        eng d  a0048-969700aMetagenomic insights to understand transient influence of Yamuna River on taxonomic and functional aspects of bacterial and archaeal communities of River Ganges0 aMetagenomic insights to understand transient influence of Yamuna  cJUL  a288-2990 v6743 a<p>River confluences are interesting ecosystems to investigate for their microbial community structure and functional potentials. River Ganges is one of the most important and holy river of India with great mythological history and religious significance. The Yamuna River meets Ganges at the Prayagraj (formerly known as Allahabad), India to form a unique confluence. The influence of Yamuna River on taxonomic and functional aspects of microbiome at this confluence and its downstream, remains unexplored. To unveil this dearth, whole metagenome sequencing of the microbial (bacterial and archaeal) community from the sediment samples of December 2017 sampling expedition was executed using high throughput MinION technology. Results revealed differences in the relative abundance of bacterial and archaeal communities across the confluence. Grouped by the confluence, a higher abundance of Proteobacteria and lower abundance of Bacteroidetes and Firnacutes was observed for Yamuna River (G15Y) and at immediate downstream of confluence of Ganges (G15DS), as compared to the upstream, confluence, and farther downstream of confluence. A similar trend was observed for archaeal communities with a higher abundance of Euryarchaeoto in G15Y and G15DS, indicating Yamuna River's influence. Functional gene(s) analysis revealed the influence of Yamuna River on xenobiotic degradation, resistance to toxic compounds, and antibiotic resistance interceded by the autochthonous microbes at the confluence and succeeding downstream locations. Overall, similar taxonomic and functional profiles of microbial communities before confluence (upstream of Ganges) and farther downstream of confluence, suggested a transient influence of Yamuna River. Our study is significant since it may be foundational basis to understand impact of Yamuna River and also rare event of mass bathing on the microbiome of River Ganges. Further investigation would be required to understand, the underlying cause behind the restoration of microbial profiles post-confluence farther zone, to unravel the rejuvenation aspects of this unique ecosystem. (C) 2019 Elsevier B.A. All rights reserved.</p>10aConfluence zone10aGanges10aMetagenomics10aTransient influence10aYamuna1 aSamson, Rachel1 aShah, Manan1 aYadav, Rakeshkumar1 aSarode, Priyanka1 aRajput, Vinay1 aDastager, Syed, G.1 aDharne, Mahesh, S.1 aKhairnar, Krishna  uhttps://library.ncl.res.in/content/metagenomic-insights-understand-transient-influence-yamuna-river-taxonomic-and-functional02808nas a2200289   4500008004100000022001400041245014300055210006900198260000800267300001100275490000800286520184800294653002302142653001902165653002402184653001702208653001502225653001702240100001902257700001802276700002302294700001602317700001902333700002202352700001902374856012502393       2023                        eng d  a0048-969700aSpatio-temporal variation of the microbiome and resistome repertoire along an anthropogenically dynamic segment of the Ganges River, India0 aSpatiotemporal variation of the microbiome and resistome reperto  cMAY  a1621250 v8723 a<p>
	Aquatic ecosystems are regarded as a hub of antibiotic and metal resistance genes. River Ganges is a unique riverine system in India with socio-cultural and economic significance. However, it remains underexplored for its microbiome and associated resistomes along its anthropogenically impacted course. The present study utilized a nanopore sequenc-ing approach to depict the microbial community structure in the sediments of the river Ganges harboring antibiotic and metal resistance genes (A/MRGs) in lower stretches known for anthropogenic impact. Comprehensive microbiome analyses revealed resistance genes against 23 different types of metals and 28 classes of antibiotics. The most dominant ARG category was multidrug resistance, while the most prevalent MRGs conferred resistance against copper and zinc. Seasonal differences dismally affected the microbiota of the Ganges. However, resistance genes for fosmidomycin and tetracycline varied with season ANOVA, p &lt; 0.05. Interestingly, 333 and 334 ARG subtypes were observed at all the locations in pre-monsoon and post-monsoon, respectively. The taxa associated with the dominant ARGs and MRGs were Pseudomonas and Burkholderia, which are important nosocomial pathogens. A substantial phage diversity for pathogenic and putrefying bacteria at all locations attracts attention for its use to tackle the dissemination of antibiotic and metal-resistant bacteria. This study suggests the accumulation of antibiotics and metals as the driving force for the emergence of resistance genes and the affiliated bacteria trafficking them. The present metagenomic as-sessment highlights the need for comprehensive, long-term biological and physicochemical monitoring and mitigation strategies toward the contaminants associated with ARGs and MRGs in this nationally important river.</p>
10aAntibiotics (ARGs)10aBacteriophages10aHeavy metals (MRGs)10aMetagenomics10aMicrobiome10aRiver Ganges1 aSamson, Rachel1 aRajput, Vinay1 aYadav, Rakeshkumar1 aShah, Manan1 aDastager, Syed1 aKhairnar, Krishna1 aDharne, Mahesh  uhttps://library.ncl.res.in/content/spatio-temporal-variation-microbiome-and-resistome-repertoire-along-anthropogenically