Uncultured Environmental Isolate Targeted loci environmental. sediment metagenome

Subglacial environments are known to harbor metabolically-diverse microbial communities. These microbial communities drive chemical weathering of underlying bedrock and influence the geochemistry of glacial meltwaters. Despite its importance in weathering reactions, the microbial cycling of iron in subglacial environments, in particular the role of microbial iron reduction, is poorly understood. In this study we address the prevalence of viable iron-reducing microorganisms in subglacial sediments from five geographically isolated glaciers.

冰下环境已知栖息着代谢多样性的微生物群落。这些微生物群落可驱动下伏基岩的化学风化过程，并影响冰川融水的地球化学特征。尽管铁的微生物循环在风化反应中发挥着关键作用，但目前学界对冰下环境中铁的微生物循环，尤其是微生物铁还原作用的相关机制仍知之甚少。本研究针对取自5个地理隔离冰川的冰下沉积物，探究了其中活性铁还原微生物的分布情况。