

FOLLOWUS
1.School of Marine Sciences, Ningbo University, Ningbo 315832, China
2.Laboratory for Marine Fisheries Science and Food Production Processes, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao 266237, China
3.Key Laboratory of Marine Eco-Environmental Science and Technology, First Institute of Oceanography, Ministry of Natural Resources (MNR), Qingdao 266061, China
Lingyun QU, E-mail: qly@fio.org.cn
Received:19 October 2020,
Accepted:24 November 2020,
Online First:10 February 2021,
Published:2022-01
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Guangxun DU, Lingyun QU, Ping GAO, et al. Integration of metabolomics and transcriptomics revealed the biosynthetic mechanism of anti-parasitic compounds in
Guangxun DU, Lingyun QU, Ping GAO, et al. Integration of metabolomics and transcriptomics revealed the biosynthetic mechanism of anti-parasitic compounds in
The fermentation broth of
Salinivibrio proteolyticus
strain YCSC6 shows potent anti-parasitic activity against
Uronema marinum
with activity varying in each fermentation stage. To investigate the biosynthetic mechanism of anti-parasitic compounds in strain YCSC6
a comprehensive analysis of metabolomics and transcriptomics over four different time points (12
24
48
and 72 h) was performed. Metabolomics detected 17 943 metabolites with 1 129 known metabolites. A trend analysis of the known metabolites showed that 575 metabolites
including 69 polyketides
were continuously enhanced
being the potential source of anti-parasitic agents. In addition
941 genes mapped to the same pathways of these metabolites
were screened through the association analysis of metabolites and genes. KEGG pathway enrichment of these genes showed 270 genes mapped to the biosynthesis of secondary metabolites and 192 genes mapped to the biosynthesis of antibiotics. This demonstrates the potent secondary metabolic capacity of strain YCSC6. Finally
a gene-metabolite correlation network was created based on the 575 continuously enhanced metabolites and 43 continuously up-regulated genes. This revealed 13 genes at the key position that mapped to a putative metabolic pathway associated with the biosynthesis of polyketides and caprylic acid
which contributes to the potent anti-parasitic activity of strain YCSC6. This comprehensive analysis of metabolomics and transcriptomics provides insights into the biosynthetic mechanisms of anti-parasitic compounds in strain YCSC6 and guides the exploitation of more anti-parasitic agents for aquaculture.
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