Oxygenation rate during Fe redox-cycling affects humid tropical forest soil metatranscriptome

Soils were collected from the Bisley Watershed, Luquillo Critical Zone Observatory, Puerto Rico. These humid tropical forest soils are hypothesized to impact global carbon and greenhouse gas cycling through Fe biogeochemical reactions during redox-oscillating conditions. This study used a laboratory incubation of these soils to investigate the effects of oxygenation rate on iron mineral transformations and microbial iron(III)-reducer gene expression (RNAseq) during alternating anoxic:oxic conditions.

本研究采集了来自波西利流域、美国波多黎各洛奎洛关键带观测站的土壤样本。这些湿润的热带雨林土壤据推测可通过在氧化还原振荡条件下铁的生物地球化学反应影响全球碳和温室气体循环。研究通过实验室土壤培养，探究了氧气供应速率对铁矿物转化以及微生物铁(III)还原基因表达（RNA测序）在交替的无氧：有氧条件下的影响。