In vitro αξιολόγηση της παρεμποδιστικής δράσης εκχυλισμάτων γλυκόριζας (Glycyrrhiza glabra) σε φυτοπαθογόνους και ωφέλιμους μικροοργανισμούς

The use of conventional agrochemicals has proved of great importance to the increased crop yield and therefor to human well-being. However, the unregulated use of plant protection products can cause long term and non-reversible side effects like soil and water pollution as well as increased cases of pest resistance to available agrochemicals. As this concern becomes more severe the European Commission seeks to reduce the use of plant protection products by 50% by the year 2030. According to previous reports, root extract of the plant Glycyrrhiza glabra, also known as liquorice, showcases bacteriostatic effect on food pathogens. In the present dissertation inhibitory potential of the extract against agriculture correlated microbes was examined by embedding dissolved liquorice powder in a substrate optimal for the microorganism’s growth. This experiment tested two pathogenic fungi frequently present in soil, Sclerotinia sclerotiorum and Pythium aphanidermatum as well as bacteria that promote plant growth. The bacteria tested were Acinetobacter vivianii, Staphylococcus epidermitis, Pseudomonas sp. and Priestia megaterium. The extract showed significant inhibition in fungi, with inhibition rates of 10.39% to 77.78% for S. sclerotiorum and 11.42% to 100% for P. aphanidermatum. Gram-negative bacteria did not show significant changes at the extract’s presence. In contrast the Gram-positive bacterium S. epidermitis showcased significant inhibition in the presence of the extract with inhibition rates ranging from 6.21% to 43.18%. ; Η εφαρμογή συνθετικών χημικών στη φυτοπροστασία είναι παράγοντας ύψιστης σημαντικότητας στην αυξημένη απόδοση καλλιεργειών και συνεπώς στην ευημερία του ανθρώπου. Ωστόσο η αλόγιστη χρήση φυτοπροστατευτικών προϊόντων μπορεί να προκαλέσει μακροχρόνια και μη αντιστρεπτά προβλήματα όπως επιμόλυνση εδάφους και υδάτων καθώς και ανάπτυξη ανθεκτικότητας παθογόνων, εχθρών και ζιζανίων των καλλιεργειών στα αγροχημικά. Με την αύξηση της ανησυχίας αυτής η Ευρωπαϊκή Ένωσης επιδιώκει την μείωση της χρήσης ...