Assessment of antifungal activity of Rumex vesicarius L. and Ziziphus spina-christi (L.) Willd. extracts against two phytopathogenic fungi

Journal Article

الديب, أ. فاطمة العتيبي, د.أميرة أبو طالب, د.قدرية . 2011

• نوع عمل المنشور: ماجستير
• المجلة \ الصحيفة: African Journal of Microbiology Research
• رقم العدد: 9
• رقم الإصدار السنوي: vol.5
• الصفحات: 1001-1011

مستخلص المنشور

The preliminary phytochemical screening of extracts of Rumex vesicarius L. and Ziziphus spina-christi
(L.) Willd. showed the presence of compounds that are biologically active against the two root rot
pathogens Drechslera biseptata and Fusarium solani in vitro. The relative efficacy of this action,
however, differed according to the extracted plant, solvent used, extract concentration, the target
fungus and phase of growth. Ethanolic extract ranked first, followed by the remaining aqueous layer

fraction. Eight flavonoid subfractions (rutin, quercetin, myricetin, apigenin, quercetin-3-O-galactoside, luteolin,

kaempherol and kaempherol-3-O-robinoside) and six flavonoid subfractions (apigenin-7-O-glucoide, quercitrin,
quercetin, isovitexin, rutin and quercetin-3-O lucoside-7-O-rhamnoside) were isolated from the remaining
aqueous layer fraction of R. vesicarius and Z. spina-christi, respectively. Generally, spore production and
germination as well as cellulolytic and pectolytic activity of F. solani were affected by plant extracts
more than that of D. biseptata. F. solani failed completely to produce spores when treated with
ethanolic extract of Z. spina-christi at the concentration of 20%. However, growth of D. biseptata was
more sensitive to plant extracts than that of F. solani. Maximum activity of plant extracts was observed
against spore production. It was evident that plant extracts could provide potential source of antifungal

compounds.