شناخت تهدیدات ناشی از عوامل بیماریزای شانکر پوست برای گیاهان چوبی و چالش های جدید در ایران

Bark canker of woody plants, caused by a complex community of pathogenic bacteria mainly from Enterobacterales, has become one of the most devastating diseases of fruit and non-fruit trees in Iran. Despite efforts mainly in phenotypic and genotypic screening of bacterial species, the mutual relationship of these pathogens (Brenneria goodwinii, "B. izadpanahii", B. roseae, B. nigrifluens, Gibbsiella quercinecans, Lonsdalea quercina, Rahnella victoriana) and evaluation of their pathogenic behavior in different plant species is poorly understood. In addition, the emergence of new potential pathogens such as Raoultella spp., Enterobacter hormaechei, and Citrobacter braakii has added complexity to woody plant pathosystems. These new invasive aliens have been reported from those hosts (walnut, salix, oak, chestnut, populus, alder) / geographical regions where Brenneria species have been dominantly characterized. The co-occurrence of these bacterial species with oak pathogenic fungi, Biscogniauxia mediterranea and Obolarina persica (Zagros ecosystem: northwest to southwest of the country) strengthens the hypothesis that climate change in a relatively short period has not only affected the habitat characteristics, but has been able to cause changes in the microbial communities associated with trees and the formation of current potential pathogens. As epidemiological modeling and mapping of oak charcoal disease in this habitat has only recently been carried out, it is hoped that by establishing a network of epidemiological studies focusing on pathogenic bacteria and combining them with previous mycological studies, it will be possible to exploit the complexity of population changes of pathogens associated with oak trees and the spread of the disease in order to provide preventive measures.