Deep-sea sediment metagenome from Bay of Bengal reveals distinct microbial diversity and functional significance

Jeya, Marimuthu; Rangamaran, Vijaya Raghavan; Subramanian, Sai H. Sankara; Balachandran, Karpaga Raja Sundari; NishanthikaThenmozhiKulasekaran,; Dinakaran, Vasudevan; Lee, Jung-Kul; Kirubagaran, Ramalingam; Dharani, G.

doi:10.1016/j.ygeno.2022.110524

Cited by 15 publications

(11 citation statements)

References 66 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…These findings are consistent with previous studies conducted in the Red Sea 16 , where prokaryotes communities were more diverse at deeper points (> 200 m) than at shallower depths (0–200 m). The dominant phyla identified in this study ( Pseudomonadota ) are similar to the results reported from the North Atlantic 17 and Bay of Bengal 18 , indicating their wide distribution and potential functional roles. The higher abundance of Desulfobacteria at 1,457 m suggests its significant involvement in biogeochemical cycles, particularly sulfate reduction in anaerobic conditions 19 .…”

Section: Discussionsupporting

confidence: 88%

A first report on prokaryotic diversity in northwestern Arafura deep-sea sediments, Indonesia

Tapilatu,

Fauzan,

Pradipta

et al. 2024

Sci Rep

View full text Add to dashboard Cite

Indonesia's deep-sea microbial communities remain poorly understood, prompting the need for comprehensive investigations. This study aimed to assess the bacterial and archaeal diversities in northwestern Arafura deep-sea sediments, spanning depths of 100 to 1,457 m using a 16S rRNA based-metagenomic sequencing approach, without technical and biological replicates. Principal component analyses based on the Bray–Curtis dissimilarity index indicated that most of the bacterial and archaeal communities were habitat-specific and influenced by depth. The most prevalent known bacterial phylotypes were detected from all samples belonging to the phylum of Desulfobacteriota, Pseudomonadota, and Firmicutes. In addition, the samples also harbored diverse members of the Archaea domain, including Crenarchaeota, Nanoarchaeota and Haloarchaeota. Notably, the sequencing data revealed the significant presence of rare prokaryotic taxa, including uncultured counterparts with less than 1% abundance. The findings suggest that novel and rare prokaryotic taxa are abundant in northwestern Arafura deep-sea ecosystem, offering unique opportunities for further bioprospecting and functional ecology studies.

show abstract

Section: Discussionsupporting

confidence: 88%

A first report on prokaryotic diversity in northwestern Arafura deep-sea sediments, Indonesia

Tapilatu,

Fauzan,

Pradipta

et al. 2024

Sci Rep

View full text Add to dashboard Cite

show abstract

“…Chloroflexi and Proteobacteria are the most abundant in all sediment samples, together accounting for more than 50% of the total relative abundance. Consistently, dominance of Proteobacteria in prokaryotic communities is also observed in a variety of deep-sea sediments, including cold seep, hydrothermal vents, and trenches 23 – 26 . Mantel’s correlation analysis was performed to explore the effects of environmental physicochemical factors on prokaryotic communities, and the results showed that depth but organic carbon and nitrogen had a significant impact on prokaryotic communities (Supplementary Fig.…”

Section: Resultssupporting

confidence: 53%

Diversity and potential host-interactions of viruses inhabiting deep-sea seamount sediments

Yu,

Zhang,

Zeng

et al. 2024

Nat Commun

View full text Add to dashboard Cite

Seamounts are globally distributed across the oceans and form one of the major oceanic biomes. Here, we utilized combined analyses of bulk metagenome and virome to study viral communities in seamount sediments in the western Pacific Ocean. Phylogenetic analyses and the protein-sharing network demonstrate extensive diversity and previously unknown viral clades. Inference of virus-host linkages uncovers extensive interactions between viruses and dominant prokaryote lineages, and suggests that viruses play significant roles in carbon, sulfur, and nitrogen cycling by compensating or augmenting host metabolisms. Moreover, temperate viruses are predicted to be prevalent in seamount sediments, which tend to carry auxiliary metabolic genes for host survivability. Intriguingly, the geographical features of seamounts likely compromise the connectivity of viral communities and thus contribute to the high divergence of viral genetic spaces and populations across seamounts. Altogether, these findings provides knowledge essential for understanding the biogeography and ecological roles of viruses in globally widespread seamounts.

show abstract

“…Despite enormous economic contributions to coastal countries like Bangladesh, India, Myanmar, and Sri Lanka, the BoB ecosystem is extremely underexplored. Several reports from neighboring countries showed investigative outcomes on oceanography, phytoplanktonic diversity, and stratification-induced nutrient cycling, but without a notable focus on microbial composition through advanced molecular studies 9 , 11 – 13 .…”

Section: Introductionmentioning

confidence: 99%

“…Recent large-scale projects in conjunction with modern DNA sequencing technologies have made significant contributions to the microbial characterization of numerous marine ecosystems, ranging from the Arctic Ocean to the tropics 16 – 19 . Several studies have reported the microbial diversity of the surface and sub-surface regions of BoB 13 , 20 , 21 , but no comprehensive study has been performed yet on this important ecological system. These coastal regions of Bangladesh play an important economic role because they are the most visited tourist destination in the country 22 , 23 and the largest source of fisheries-based rural markets, supplying a significant portion of the country's fish 24 .…”

Section: Introductionmentioning

confidence: 99%

Phylogenetic diversity and functional potential of the microbial communities along the Bay of Bengal coast

Akter,

Rahman,

Ali

et al. 2023

Sci Rep

View full text Add to dashboard Cite

The Bay of Bengal, the world's largest bay, is bordered by populous countries and rich in resources like fisheries, oil, gas, and minerals, while also hosting diverse marine ecosystems such as coral reefs, mangroves, and seagrass beds; regrettably, its microbial diversity and ecological significance have received limited research attention. Here, we present amplicon (16S and 18S) profiling and shotgun metagenomics data regarding microbial communities from BoB’s eastern coast, viz., Saint Martin and Cox’s Bazar, Bangladesh. From the 16S barcoding data, Proteobacteria appeared to be the dominant phylum in both locations, with Alteromonas, Methylophaga, Anaerospora, Marivita, and Vibrio dominating in Cox’s Bazar and Pseudoalteromonas, Nautella, Marinomonas, Vibrio, and Alteromonas dominating the Saint Martin site. From the 18S barcoding data, Ochrophyta, Chlorophyta, and Protalveolata appeared among the most abundant eukaryotic divisions in both locations, with significantly higher abundance of Choanoflagellida, Florideophycidae, and Dinoflagellata in Cox’s Bazar. The shotgun sequencing data reveals that in both locations, Alteromonas is the most prevalent bacterial genus, closely paralleling the dominance observed in the metabarcoding data, with Methylophaga in Cox’s Bazar and Vibrio in Saint Martin. Functional annotations revealed that the microbial communities in these samples harbor genes for biofilm formation, quorum sensing, xenobiotics degradation, antimicrobial resistance, and a variety of other processes. Together, these results provide the first molecular insight into the functional and phylogenetic diversity of microbes along the BoB coast of Bangladesh. This baseline understanding of microbial community structure and functional potential will be critical for assessing impacts of climate change, pollution, and other anthropogenic disturbances on this ecologically and economically vital bay.

show abstract

Deep-sea sediment metagenome from Bay of Bengal reveals distinct microbial diversity and functional significance

Cited by 15 publications

References 66 publications

A first report on prokaryotic diversity in northwestern Arafura deep-sea sediments, Indonesia

A first report on prokaryotic diversity in northwestern Arafura deep-sea sediments, Indonesia

Diversity and potential host-interactions of viruses inhabiting deep-sea seamount sediments

Phylogenetic diversity and functional potential of the microbial communities along the Bay of Bengal coast

Contact Info

Product

Resources

About