Das Basanta Kumar, Gadnayak Ayushman, Chakraborty Hirak Jyoti, Pradhan Smruti Priyambada, Raut Subhashree Subhasmita, Das Sanjoy Kumar
ICAR-Central Inland Fisheries Research Institute, Barrackpore, Kolkata, 700120, India.
Sci Rep. 2025 Feb 8;15(1):4784. doi: 10.1038/s41598-025-89418-x.
The Sundarbans, the world's largest tidal mangrove forest, acts as a crucial ecosystem for production, conservation, and the cycling of carbon and nitrogen. The study explored the hypothesis that microbial communities in mangrove ecosystems exhibit unique taxonomic and functional traits that play a vital part in carbon cycling and ecosystem resilience. Using metagenomic analysis to evaluate microbial communities in mangrove and non-mangrove environment, evaluating their composition, functional functions, and ecological relevance. The analysis revealed distinct microbial profiles, in mangrove and non-mangrove environments, with bacteria, proteobacteria, and viruses being the most prevalent groups, with varying abundances in each environment. Functional and taxonomical analysis identified genes involved in carbon regulation, including Triacylglycerol lipase, NarG, DsrB, DNA-binding transcriptional dual regulator CRP, Vanillate O-demethylase oxygenase, succinate-CoA ligase, Tetrahydrofolate ligase, Carboxylase, Ribulose-1,5-bisphosphate carboxylase/oxygenase, Glycine hydroxymethyltransferase, MAG: urease, Endosymbiont of Oligobrachia haakonmosbiensis, Ribulose bisphosphate carboxylase, Aconitate hydratase AcnA, and nitrous oxide reductase, suggesting the metabolic versatility of these microbial communities for carbon cycling. The findings emphasize the key role of microbial activity in preserving mangrove ecosystem health and resilience, highlighting the intricate interplay between microbial diversity, functional capabilities, and environmental factors.
孙德尔本斯是世界上最大的潮汐红树林，是碳和氮生产、保护及循环的关键生态系统。该研究探讨了以下假设：红树林生态系统中的微生物群落具有独特的分类和功能特征，在碳循环和生态系统恢复力中发挥着至关重要的作用。利用宏基因组分析评估红树林和非红树林环境中的微生物群落，评估它们的组成、功能以及生态相关性。分析揭示了红树林和非红树林环境中不同的微生物概况，细菌、变形菌和病毒是最普遍的群体，在每个环境中的丰度各不相同。功能和分类分析确定了参与碳调节的基因，包括三酰甘油脂肪酶、NarG、DsrB、DNA结合转录双调节因子CRP、香草酸O-脱甲基酶加氧酶、琥珀酸辅酶A连接酶、四氢叶酸连接酶、羧化酶、核酮糖-1,5-二磷酸羧化酶/加氧酶、甘氨酸羟甲基转移酶、MAG：脲酶、哈氏寡腕虫内共生体、核酮糖二磷酸羧化酶、乌头酸水合酶AcnA和一氧化二氮还原酶，表明这些微生物群落具有碳循环的代谢多样性。研究结果强调了微生物活动在维护红树林生态系统健康和恢复力方面的关键作用，突出了微生物多样性、功能能力和环境因素之间复杂的相互作用。
