Influence of Some Cladonia Lichens on Plant Pathogenic Bacteria and Copper Reducing Antioxidant Capacity Activities
Journal Title: Cumhuriyet Science journal - Year 2017, Vol 38, Issue 4
Abstract
Microorganisms such as bacteria and fungi lead many diseases in plants. A great deal of pathogenic microorganisms has gained resistance against frequently utilized antibiotics and synthetic fungicides. Lichens are symbiotic associations between a fungus, an algae or a cyanobacterium. Lichens and their metabolites are demonstrated to be encouraging alternatives to synthetic chemicals. The aim of this study was to reveal the antibacterial effect of ethyl acetate extracts of Cladonia stellaris, Cladonia pyxidata and Cladonia furcata lichen species. Extracts were obtained by Soxhlet extraction. Whereas antibacterial activity was determined by the disc diffusion method, antioxidant activity was determined by copper reducing antioxidant capacity (CUPRAC) method. The best antibacterial activity was found in C. stellaris extract (25 mm), which was stronger than the positive control antibiotics (ampicillin and tetracycline) against Pseudomonas syringae pv. syringae and Erwinia carotovora subsp. carotovora. The CUPRAC activity was increased in the following order: C. furcata>C. pyxidata>C. stellaris. Further studies are needed on isolation of active constituents from lichen extracts and their biological activity studies are to be worked out.
Authors and Affiliations
Sinem AYDIN, Bahar BILGIN SOKMEN, Kadir KINALIOGLU
Keywords
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- EP ID EP488327
- DOI 10.17776/csj.358762
- Views 44
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