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Pseudomonas syringae pv. aptata *

(Brown & Jamieson 1913) Young, Dye & Wilkie 1978

Bacterial blight


- classification : Bacteria, Proteobacteria, Gammaproteobacteria, Pseudomonadales, Pseudomonadaceae
- English name: bacterial blight

The first symptoms of bacterial blight in melon were observed in France in 1993, with fruit rots appearing in melons in Tarn-et-Garonne. Subsequently, regular and severe epidemics were recorded in this region, in particular from 1995 to 1997. During this last year, a state of natural disaster was declared in several affected plots in this department, but also in the Lot. The production of some plots was reduced by 80% or even 100%. Subsequently, the disease gradually spread to other French production areas, with damage being recorded for example in the South-East in 2002.

It should be noted that this bacteriosis is very difficult to control due to the lack of sufficiently effective protection methods.

* Behind the bacterium P. syringae pv. aptata is in fact hiding a complex of pathovars which are extremely difficult to differentiate between them and all capable of causing this bacterial blight on melon. Also, the identification of a P. syringae is sufficient in the laboratory to confirm the presence of this pathogenic bacterium isolated from symptoms on melon.
Last change : 04/30/21