中文摘要：

涉及南极 psychrotrophic 细菌 Psychrobacter sp 的温度改编的关键功能的基因。G。被定序的 transcriptomic 识别。我们分析了 Psychrobacter sp 的全球 transcriptional 侧面。在冷应力下面的 G (0 瑡瘠牥 ? 潬 ? 慲整 ? 湩琠敨漠摲牥漠 ?? 猼灵 ?? 猯灵￣潴ㄠ ? ???? ?? 映潭 ? 挨汥? 污潭瑳ㄠ ? 搿摩

英文摘要：

The key functional genes involved in temperature adaption of the Antarctic psychrotrophic bacterium Psychrobacter sp. G. were identified by transcriptomic sequencing. We analyzed the global transcriptional profile of Psychrobacter sp. G under cold stress（0°C） and heat stress（30°C）, with the optimal growth temperature 20°C as the control. There were large alterations of the transcriptome profile, including significant upregulation of 11 and 12 transcripts as well as significant downregulation of 47 and 42 transcripts in the cold and heat stress groups, respectively, compared to the control. The expression of various genes encoding enzymes and transcriptional regulators, including Pfp I and Tet R family transcriptional regulators under heat stress, as well as the expression of DEAD/DEAH box helicase and the Icl R family of transcriptional regulators under cold stress, were upregulated significantly. The expression of several genes, most affiliated with Ton Bdependent receptor and siderophore receptor, was downregulated significantly under both heat and cold stress. Many of the genes associated with the metabolism of fatty acid and ABC transporters were regulated differentially under different temperature stress. The results of this survey of transcriptome and temperature stress-relevant genes contribute to our understanding of the stress-resistant mechanism in Antarctic bacteria.