Journal
EUROPEAN JOURNAL OF PLANT PATHOLOGY
Volume 138, Issue 1, Pages 1-8Publisher
SPRINGER
DOI: 10.1007/s10658-013-0300-x
Keywords
Bell pepper; Emerging plant disease; Serratia marcescens; Soft-rotting bacteria
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Funding
- Decanato de Estudios de Postgrado (Universidad Simon Bolivar, Caracas-Venezuela)
- Mision Ciencia government scholarship program
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Soft-rotting bacteria affecting bell peppers crops represent an economically destructive disease of growing importance worldwide. In Venezuela since 2006, soft-rot symptoms have been occasionally observed in bell pepper fruits grown under greenhouse conditions. Affected fruits presented water-soaked lesions that progressed to complete fruit maceration. Bacteria were isolated from water-soaked lesions in order to identify the causal agent of this disease. Of 13 bacterial isolates recovered from affected fruits, only isolate AGPim1A was able to produce a hypersensitive reaction in tobacco plants and to reproduce soft-rot symptoms in bell peppers fruits. Several methods, including classical bacteriological tests and carbon utilization profiling, alongside with sequence analysis of 16S rRNA and housekeeping genes gyrB and groES-groEL, allowed identification of the soft-rotting bacterium as Serratia marcescens. To our knowledge, this is the first report showing a S. marcescens strain associated with soft-rot disease in bell pepper fruits.
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