1887

Abstract

Bacterial canker of papaya () emerged during the 1980s in different islands of the Caribbean. Nineteen strains of Gram-negative, rod-shaped, non-spore-forming bacteria isolated from papaya were compared to 38 reference and type strains of phytopathogenic and related bacteria. Phylogenetic analysis of 16S rRNA gene sequences showed that the papaya strains belonged to the genus . The DNA G+C content of strain CFBP 5189, 52·5 mol%, is in the range of the genus . The 19 papaya strains were all pathogenic to papaya and were differentiated clearly from type or reference strains of phytopathogenic enterobacteria and related bacteria by phenotypic tests. The papaya strains constituted a discrete DNA hybridization group, indicating that they belonged to a unique genomic species. Thus, strains pathogenic to papaya belong to a novel species for which the name sp. nov. is proposed, with the type strain CFBP 5189 (=NCPPB 4294).

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2004-01-01
2019-10-17
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vol. , part 1, pp. 107 – 113

Full phylogenetic tree showing the relationships of CFBP 5189 .

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