AI Article Synopsis
- Pseudomonas plecoglossicida is a harmful pathogen causing viscera granulomas disease in fish, leading to economic losses.
- In a study, researchers knocked down the L321_RS13075 gene, revealing it significantly reduces the pathogen's ability to colonize, survive inside cells, move, form biofilms, and adhere.
- The silence of L321_RS13075 altered the transcriptome of infected fish, mainly affecting genes related to immune responses and ion transport, emphasizing its role as a key virulence factor in the pathogen's impact on the host.
Article Abstract
Pseudomonas plecoglossicida is a well-known pathogen of viscera granulomas disease in fish, which has led to severe economic losses. In our previous study, L321_RS13075 was predicted to be a key virulence gene of P. plecoglossicida during the host-pathogen interaction with Epinephelus coioides. To investigate the role of L321_RS13075 in the regulation of virulence in P. plecoglossicida, a L321_RS13075 knock-down strain was constructed. And a significant reduction in the ability of colonization, intracellular survival, motility, biofilm formation, and adhesion was detected in the L321_RS13075 knock-down strain. Compared with the wild-type strain, the silence of L321_RS13075 in P. plecoglossicida resulted in a significant change in the transcriptome of infected Epinephelus coioides (E. coioides). Results of COG and GO analysis on E. coioides showed that genes related to immune responses and inorganic ion transport were significantly affected by L321_RS13075 of P. plecoglossicida. Meanwhile, the interactions of the genes related to immune responses and inorganic ion transport were predicted, and the important hub genes were identified. Taken together, the results indicated that L321_RS13075 was a virulent gene of P. plecoglossicida, which significantly affected the immune responses and inorganic ion transport in E. coioides.
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| http://dx.doi.org/10.1016/j.fsi.2021.12.036 | DOI Listing |
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