1887

Abstract

Two new actinobacteria, designated strains IBSBF 2807 and IBSBF 2953, isolated from scab lesions on potato tubers grown in the southern Brazilian states of Rio Grande do Sul and Santa Catarina, respectively, were characterized and identified through a polyphasic approach. Phylogenetic analyses of 16S rRNA sequences revealed that these two strains belong to the genus . Multilocus sequence analysis using five concatenated genes, , , , and , allocated strains IBSBF 2807 and IBSBF 2953 in distinct branches of phytopathogenic strains. PCR-RFLP analysis of the gene also confirmed that these strains differ from the type strains of associated with potato scab. The morphological, physiological and biochemical characterization, along with the overall genome-related index properties, indicated that these two strains could be distinguished from their closest phylogenetic relatives and each other. According to the data, IBSBF 2807 and IBSBF 2953 represent two new species related to potato scab. The proposed names for these strains are sp. nov. (IBSBF 2807=CBMAI 2674=ICMP 24297=MUM 22.66) and sp. nov (IBSBF 2953=CBMAI 2675=ICMP 24301=MUM 22.68).

Funding
This study was supported by the:
  • Fundação de Amparo à Pesquisa do Estado de São Paulo (Award 2019/12999-9)
    • Principle Award Recipient: LucasVitor
  • Fundação de Amparo à Pesquisa do Estado de São Paulo (Award 2017/50334-3)
    • Principle Award Recipient: SuzeteAparecida Lanza Destéfano
  • Conselho Nacional de Desenvolvimento Científico e Tecnológico (Award 133330/2019-2)
    • Principle Award Recipient: LucasVitor
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2023-06-15
2024-04-25
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