الفهرس | Only 14 pages are availabe for public view |
Abstract Algal extracts contain a number of important compounds such as carbohydrates, proteins, minerals, oil, fats, vitamins, polyunsaturated fatty acids, polyphenols, amino acids and pigments such as carotenoids, chlorophylls and phycobilins which possess antibacterial, antiviral, antifungal, antioxidative, anti-inflammatory and antitumor properties. Nowadays, algae are used in many applications such as bioremediation, cosmetics, pharmaceutical industry, the production of biofuels, bioplastics, animal feeds, fertilizers and biological control of soil borne phytopathogenic fungi and this is considered ecofriendly method. This study aimed to (1) Evaluate in vitro the antifungal activity of some macro and microalgae extracts against two types of soil borne phytopathogens; Macrophomina phaseolina (Tassi) Goid and Fusarium oxysporum f. sp. lycopersici Schltdl, (2) Investigate the antifungal potential of volatile metabolites emitted from microalgae against M. phaseolina and F. oxysporum, (3) Test in vivo the activity of promising algal extracts in controlling wilt disease in tomato that is caused by F. oxysporum and (4) chromatographic analysis of metabolic profiles to quantify algal bioactive compounds. The highest activity against M. phaseolina and F. oxysporum was observed by Ulva fasciata acetone extract and Navicula arenaria hexane extract while the highest activity against F. oxysporum was observed by Desertifilum tharense methanol extract. Chlorella vulgaris did not have any inhibitory effect against candidate phytopathogens. |