Metagenomic data from samples collected on cruise Chikyu-331 in the Okinawa Trough, Japan from September to October 2010

<p>Next-generation sequencing data across a hydrothermal gradient; Okinawa Backarc Basin IODP 331 – subvent biosphere.&nbsp;The purpose these metagenomic data was to capture a distinct changeover of microbial assemblages between the mesophilic horizons above 10 mbsf and the hottest (55C) hydrothermal clay horizon. In this section of the dynamic Iheya North Hydrothermal system, the temperature gradient was estimated to be ~3C/m. These metagenomes provide functional evidence to this model, demonstrating that molecular signals represent a responsive microbial community to the increasingly demanding environmental conditions.</p>

热液梯度下的下一代测序（Next-generation Sequencing）数据；冲绳弧后盆地国际大洋发现计划（IODP）331航次——俯冲下生物圈（subvent biosphere）。本宏基因组（metagenomic）数据的核心目标是捕捉海底以下10米（meters below sea floor, mbsf）以上的嗜温地层与温度最高达55℃的热液黏土地层之间微生物群落组合的显著演替。在动态的伊江岛北热液系统的该区段内，温度梯度估算约为3℃/米。此类宏基因组为相关模型提供了功能层面的实证依据，表明分子信号能够反映微生物群落对日益严苛的环境条件所产生的响应。