First report of Brenneria goodwinii and Gibbsiella quercinecans bacteria, detected on weaken oak trees in Poland

The decline of oak stands is a phenomenon that has been observed since the beginning 20th century in many European countries. It can be caused both with abiotic factors such as drought and fluctuations groundwater levels, well biotic infestations by insects, fungi bacteria. Acute Oak Decline (AOD) an dangerous disease trees which was first XX century. From moment symptoms were noticed, able to kill up 6 years. Two species bacteria, Brebberia goodwinii Gibsiella quercinecand, are considered one infectious agents AOD. Quercs robur reported from weakened stand Chojnów Forest District. Symptomatic exudates sampled subjected laboratory analysis. Using Real time PCR, bacteria Brenneria quercinecans confirmed two out seven collected field samples. This report information on observation these participation Quercus Poland. Keywords: robur, goodwinii, quercinecans, real