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Gomide, Anne Cybelle Pinto; Ibraim, Izabela Coimbra; Alves, Jorianne T.C.; de Sá, Pablo Gomes; de Oliveira Silva, Yuri Rafael; Santana, Mariana Passos; Silva, Wanderson Marques; Folador, Edson Luiz; Mariano, Diego C.B.; de Paula Castro, Thiago Luiz; Barbosa, Silvanira; Dorella, Fernanda Alves; Carvalho, Alex F.; Pereira, Felipe L.; Leal, Carlos A.G.; Figueiredo, Henrique C.P.; Azevedo, Vasco; Silva, Artur; Folador, Adriana Ribeiro Carneiro
Gene, 11/2018, Volume: 677Journal Article
Corynebacterium pseudotuberculosis has been widely studied in an effort to understand its biological evolution. Transcriptomics has revealed possible candidates for virulence and pathogenicity factors of strain 1002 (biovar Ovis). Because C. pseudotuberculosis is classified into two biovars, Ovis and Equi, it was interesting to assess the transcriptional profile of biovar Equi strain 258, the causative agent of ulcerative lymphangitis. The genome of this strain was re-sequenced; the reassembly was completed using optical mapping technology, and the sequence was subsequently re-annotated. Two growth conditions that occur during the host infection process were simulated for the transcriptome: the osmotic and acid medium. Genes that may be associated with the microorganism's resilience under unfavorable conditions were identified through RNAseq, including genes present in pathogenicity islands. The RT-qPCR was performed to confirm the results in biological triplicate for each condition for some genes. The results extend our knowledge of the factors associated with the spread and persistence of C. pseudotuberculosis during the infection process and suggest possible avenues for studies related to the development of vaccines, diagnosis, and therapies that might help minimize damage to agribusinesses. •Corynebacterium pseudotuberculosis is resistant to many stresses.•The strain 258, biovar Equi, was subjected to two stress conditions, in vitro.•RNA sequencing of the bacterium revealed genes located in pathogenicity island.•Some differentially expressed genes were confirmed by RT-qPCR.
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