Oxytetracycline and Streptomycin Resistance Genes in <i>Xanthomonas arboricola</i> pv. <i>pruni</i>, the Causal Agent of Bacterial Spot in Peach.

ABSTRACT: Xanthomonas arboricola pv. pruni (Xap) causes bacterial spot, a major worldwide disease of Prunus species. Very few chemical management options are available for this disease and frequent applications of oxytetracycline (OTC) in the United States peach orchards have raised concerns about resistance development. During 2017-2020, 430 Xap strains were collected from ten peach orchards in South Carolina. Seven OTC-resistant (OTC ^R ) Xap strains were found in 2017 and 2020 from four orchards about 20-270 km apart. Interestingly, the seven strains were also resistant to streptomycin (STR). Six strains grew on media amended with ≤100 μg/mL OTC, while one strain, R1, grew on ≤250 μg/mL OTC. Genome sequence analysis of four representative

SUBMITTER: Herbert A 

PROVIDER: S-EPMC8914263 | biostudies-literature | 2022

REPOSITORIES: biostudies-literature