Comparative genomic analysis of Citrobacter sp. XT1-2-2 reveals insights into the molecular mechanism of microbial immobilization of heavy metals

BMC Genomics

Research

Zujiao Fu¹  Yilu Li¹  Yushuang Wang¹  Wei Cheng¹  Min Zhang¹  Zhudong Liu¹  Shandong Wu¹  Xiaowu Wei¹  Dongxia Du¹  Zhaohui Guo²  Shiping Shan² 

[1] Hunan Institute of Microbiology, 410009, Changsha, Hunan, China;Hunan Institute of Microbiology, 410009, Changsha, Hunan, China;Hunan Engineering and Technology Research Center of Agricultural Microbiology Application, 410009, Changsha, Hunan, China;

关键词: Citrobacter;    Cadmium;    Microbial immobilization;    Rice;    Sulfate reduction pathway;   

DOI  :  10.1186/s12864-022-09069-4

 received in 2022-05-12, accepted in 2022-12-05,  发布年份 2022

来源: Springer

【 摘 要 】

BackgroundIn our previous study, Citrobacter sp. XT1-2-2 was isolated from high cadmium-contaminated soils, and demonstrated an excellent ability to decrease the bioavailability of cadmium in the soil and inhibit cadmium uptake in rice. In addition, the strain XT1-2-2 could significantly promote rice growth and increase rice biomass. Therefore, the strain XT1-2-2 shows great potential for remediation of cadmium -contaminated soils. However, the genome sequence of this organism has not been reported so far. ResultsHere the basic characteristics and genetic diversity of the strain XT1-2-2 were described, together with the draft genome and comparative genomic results. The strain XT1-2-2 is 5040459 bp long with an average G + C content of 52.09%, and contains a total of 4801 genes. Putative genomic islands were predicted in the genome of Citrobacter sp. XT1-2-2. All genes of a complete set of sulfate reduction pathway and various putative heavy metal resistance genes in the genome were identified and analyzed.ConclusionsThese analytical results provide insights into the genomic basis of microbial immobilization of heavy metals.

【 授权许可】

CC BY   
© The Author(s) 2022

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