Department of Microbiology, Jahangirnagar University, Savar, Dhaka, Bangladesh.
Department of Microbiology, Jashore University of Science and Technology, Jashore, Bangladesh.
Sci Rep. 2023 Sep 25;13(1):15976. doi: 10.1038/s41598-023-43306-4.
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.
孟加拉湾是世界上最大的海湾，周边是人口众多的国家，拥有丰富的渔业、石油、天然气和矿产资源，同时还拥有多样化的海洋生态系统，如珊瑚礁、红树林和海草床；遗憾的是，其微生物多样性和生态意义尚未得到充分研究。在这里，我们展示了关于孟加拉国东海岸（圣马丁和考克斯巴扎尔）微生物群落的扩增子（16S 和 18S）分析和鸟枪法宏基因组学数据。从 16S 条形码数据来看，两个地点都以变形菌门为主导，其中交替单胞菌属、甲基噬氢菌属、厌氧孢菌属、海洋玛塔菌属和弧菌属在考克斯巴扎尔占主导地位，而假交替单胞菌属、诺特氏菌属、海洋单胞菌属、弧菌属和交替单胞菌属则在圣马丁占主导地位。从 18S 条形码数据来看，两个地点最丰富的真核生物门是黄藻门、绿藻门和原绿藻门，其中考克斯巴扎尔的内变形虫门、佛罗里达藻科和甲藻门的丰度显著较高。鸟枪法测序数据显示，在两个地点，交替单胞菌属都是最普遍的细菌属，与 metabarcoding 数据中观察到的优势属非常吻合，考克斯巴扎尔的甲基噬氢菌属和圣马丁的弧菌属也很丰富。功能注释显示，这些样本中的微生物群落携带有生物膜形成、群体感应、异生物质降解、抗生素耐药性和各种其他过程的基因。总之，这些结果首次提供了关于孟加拉湾沿海微生物群落的功能和系统发育多样性的分子见解。对微生物群落结构和功能潜力的这种基本了解对于评估气候变化、污染和其他人为干扰对这个生态和经济至关重要的海湾的影响至关重要。
