Express PRA for Syndrome basses „richesses" (SBR)
In 1991, the Syndrome „basses richesses“ was detected in Burgundy, France for the first time. In 2008, first infested sugar beets were found in Germany. In 2010, no infestations were detected, but in autumn 2011, there was a new outbreak. Only recently it was found that the γ-3-Proteobacterium Candidatus Arsenophonus phytopathogenicus is the main origin of the syndrome detected in France. The same is assumed for Germany. The bacterium is transmitted by the planthopper Pentastiridius leporinus. Until now the pest is neither listed in the Annexes of Directive 2000/29/EC nor by EPPO. Further spread of Candidatus Arsenophonus phytopathogenicus within Germany and possibly introduction to other Member States is most likely in the case that infested areas were tolerated and infested plant material was transported, especially as the vector P. leporinus is widespread. Candidatus Arsenophonus phytopathogenicus might cause severe damage on sugar beets in Germany as well as in other EU Member States where sugar beets are cultivated. Thus, measures on the control and for the prevention of further introduction and spread of Candidatus Arsenophonus phytopathogenicus and its vector Pentastiridius leporinus should be met according to § 4a of the German Plant Inspection Order (PBVO). A monitoring should be conducted in the infested area. In infested sites a suitable control program (f. e. application of different methods like use of insecticides, change in crop rotation, reduced tillage) with the aim of containment or eradication should be applied.
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