Volume 18 Issue 3
Jun.  2022
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LIU Guangxin, DONG Yanjun, ZHAO Lijuan, DENG Yiqin, CHENG Changhong, MA Hongling, JIANG Jianjun, FENG Juan, GUO Zhixun, LIN Li. Sequencing of whole genome of Bacillus velezensis LG37 and screening of inorganic nitrogen metabolism candidate genes[J]. South China Fisheries Science, 2022, 18(3): 57-67. DOI: 10.12131/20210149
Citation: LIU Guangxin, DONG Yanjun, ZHAO Lijuan, DENG Yiqin, CHENG Changhong, MA Hongling, JIANG Jianjun, FENG Juan, GUO Zhixun, LIN Li. Sequencing of whole genome of Bacillus velezensis LG37 and screening of inorganic nitrogen metabolism candidate genes[J]. South China Fisheries Science, 2022, 18(3): 57-67. DOI: 10.12131/20210149
shu

Sequencing of whole genome of Bacillus velezensis LG37 and screening of inorganic nitrogen metabolism candidate genes

  • 1.

    South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences/Key Laboratory of South China Sea Fishery Resources Exploitation & Utilization, Ministry of Agriculture and Rural Affairs, Guangzhou 510300, China

  • 2.

    Zhaoqing Fisheries Technology Extension Center, Zhaoqing 526040, China

  • 3.

    Zhongkai University of Agriculture and Engineering/Guangdong Provincial Water Environment and Aquatic Products Security Engineering Technology Research Center/Guangzhou Key Laboratory of Aquatic Animal Diseases and Waterfowl Breeding, Guangzhou 510225, China

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  • Received Date: May 19, 2021
  • Revised Date: July 06, 2021
  • Accepted Date: September 28, 2021
  • Available Online: October 18, 2021
    Graphical Abstract
    • Abstract
  • It has been found that Bacillus velezensis can assimilate inorganic nitrogen efficiently. However, the underlying mechanism of inorganic nitrogen assimilation remains enigmatic. In order to elucidate the mechanism, we sequenced the complete genome of LG37 by PacBio RS II and Illumina HiSeq 2000, and then annotated and analyzed the sequence by the database of NR, KEGG, eggNOG, GO and CARD. Finally, we screened the genes related to inorganic nitrogen metabolism by local Blast+. The results show that: 1) The genome contained one circular chromosomal with a size of 3 929 697 bp and a GC-content of 46.5%. Gene prediction and annotation was performed to acquire a total of 3 854 protein-coding genes, 86 tRNA genes and 27 rRNA genes. 2) A total of 94 inorganic nitrogen metabolism candidate genes were screened by local Blast+. These genes were involved into coding sensing protein, transcriptional regulator, transporter, oxidoreductase and assimilator, etc.. In conclusion, the whole genome sequencing and data analysis of LG37 provide data at gene level and theoretical basis for functional study and application of Bacillus in reducing inorganic nitrogen in aquaculture water.
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