Journal of Tropical Oceanography ›› 2022, Vol. 41 ›› Issue (1): 52-61.doi: 10.11978/2021018CSTR: 32234.14.2021018

• Marine Biology • Previous Articles     Next Articles

Draft genome sequence and comparative genome analysis of Alliroseovarius sp. Z3

LIU Wei1,2(), GUO Haipeng1,2(), DONG Pengsheng1,2, YAN Mengchen1,2, ZHANG Demin1,2   

  1. 1. State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products, Ningbo University, Ningbo 315800, China
    2. School of Marine Sciences, Ningbo University, Ningbo 315800, China
  • Received:2021-02-13 Revised:2021-04-08 Online:2022-01-10 Published:2021-04-12
  • Contact: GUO Haipeng E-mail:645560829@qq.com;guohaipeng@nbu.edu.cn
  • Supported by:
    National Natural Science Foundation of China(31672658);General Research Project of Zhejiang Education Department, China(Y201839299);Agricultural Major Project of Ningbo, China(2017C110001)

Abstract:

Alliroseovarius sp. Z3 was isolated from guts of Litopenaeus vannamei. In the study, Illumina Hiseq sequencing platform was used for genome sequencing; then, the genome was assembled, annotated by software SOAPdenovo etc., and compared with other five similar type strains. Genome annotation results showed that Z3 genome consists of 3525503 bp with a guanine-cytosine (GC) content of 59.4%, and 3509 protein-coding genes. The results of 16S rRNA sequence alignment, average nucleotide identity (ANI), DNA-DNA hybridization (DDH) and collinearity analysis showed that strain Z3 had the highest 16S rRNA similarity with Aliiroseovarius crassostreae CV919-312T, at 98.20%, and had the highest DDH and ANI values with Aliiroseovarius sediminilitoris DSM 29439T, at 26.80% and 84.95%, respectively. It was considered to be a new species of Alliroseovarius, and was named Aliiroseovarius sp. Z3. Comparative genomic analysis displayed that Aliiroseovarius sp. Z3 shared 2005 core orthologous gene clusters with other five similar type strains, and Z3 had 413 specific genes that are related to carbohydrate transport and metabolism, amino acid transport and metabolism, replication, recombination and repair, etc. After functional annotations, we found that Z3 possesses a complete denitrification pathway, indicating that Z3 can utilize nitrate and nitrite in the environment. These results related to the genome features and comparative genome of strain Z3 not only enrich the gene source of Aliiroseovarius genus, but also provide a molecular basis for studying its characteristics of denitrification.

Key words: shrimp gut, Aliiroseovarius sp. Z3, phylogenetic analysis, denitrification, comparative genome analysis

CLC Number: 

  • P735.51