Determination of Antibacterial Efficacies of Plant Extracts on Tomato Bacterial Speck Disease

Authors : Kubilay Kurtuluş BAŞTAŞ

Pages : 1-10

View : 19 | Download : 7

Publication Date : 2016-01-30

Article Type : Research Paper

Abstract :Bacterial speck caused by Pseudomonas syringae pv. tomato is an economically important disease of tomato. The aim of this study was to evaluate the effectiveness of some medicinal and aromatic plant extracts on tomato seeds insert ignore into journalissuearticles values(cv. H-2274); and plants against P. s. pv. tomato in vitro and in vivo . The extracts obtained from leaves, stems, seeds and fruits of Juglans regia , Lavandula officinalis , Eucalyptus globulus , Rosmarinus officinalis , Olea europaea, Tilia tomentosa , Jatropha curcas , Humulus lupulus , Nigella sativa , Trigonella foenum-graecum , Cuminum cyminum , Rhus coriaria , Daucus carota, Rosa canina and Moringa oleifera. Amongs the 15 different plants, three plant extracts inhibited the growth of the pathogen with inhibition zone diameter ranging from 13 to 22 mm at 20% insert ignore into journalissuearticles values(w/v); in absolute methanol. Bacterial population on tomato seeds after applications of the plant extracts at 5 doses was also determined. Rhus coriaria and Eucalyptus globulus extracts at 20% concentration completely inhibited the P. s. pv. tomato on tomato seeds. In spite of the highest antibacterial effects of s umac and eucalyptus to the pathogen, there was no a negative effect on tomato seed germination. The effects of E. globules, R. coriaria and R. officinalis extracts against the pathogen were examined in greenhose conditions and, t he highest efficiency was achieved by E. globulus insert ignore into journalissuearticles values(65.86%); on tomato. The peroxidase enzyme and total protein values have shown an increase in the leaves following application of sumac, rosemary and eucalyptus extracts before the inoculation with P. s . pv. tomato. This study indicated that some plant extracts may be used in prevention programs to combat the bacterial speck disease on tomato.
Keywords : Pseudomonas syringae pv tomato, tomato, plant extracts, biological control, peroxidase, protein