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Unraveling adaptation of Pontibacter korlensis to radiation and infertility in desert through complete genome and comparative transcriptomic analysis

文献类型： 外文期刊

作者： Dai, Jun 1 ; Dai, Wenkui; Qiu, Chuangzhao; Yang, Zhenyu; Zhang, Yi 1 ; Zhou, Mengzhou 1 ; Zhang, Lei; Fang, C 1 ;

作者机构： 1.Hubei Univ Technol, Coll Bioengn, Hubei Prov Cooperat Innovat Ctr Ind Fermentat, Key Lab Fermentat Engn,Minist Educ, Wuhan 430068, Peoples R China

2.Hubei Univ Technol, Coll Bioengn, Hubei Prov Cooperat Innovat Ctr Ind Fermentat, Key Lab Fermentat Engn,Minist Educ, Wuhan 430068, Peopl

期刊名称：SCIENTIFIC REPORTS （ 影响因子：4.379； 五年影响因子：5.133 ）

ISSN： 2045-2322

年卷期： 2015 年 5 卷

页码：

收录情况： SCI

摘要： The desert is a harsh habitat for flora and microbial life due to its aridness and strong radiation. In this study, we constructed the first complete and deeply annotated genome of the genus Pontibacter (Pontibacter korlensis X14-1(T) = CCTCC AB 206081(T), X14-1). Reconstruction of the sugar metabolism process indicated that strain X14-1 can utilize diverse sugars, including cellulose, starch and sucrose; this result is consistent with previous experiments. Strain X14-1 is also able to resist desiccation and radiation in the desert through well-armed systems related to DNA repair, radical oxygen species (ROS) detoxification and the OstAB and TreYZ pathways for trehalose synthesis. A comparative transcriptomic analysis under gamma radiation revealed that strain X14-1 presents high-efficacy operating responses to radiation, including the robust expression of catalase and the manganese transport protein. Evaluation of 73 novel genes that are differentially expressed showed that some of these genes may contribute to the strain's adaptation to radiation and desiccation through ferric transport and preservation.

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