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VOL. 5, ISSUE 3 (2023)
Evaluation of antifungal activity of aqueous extract of Pulicaria undulata against certain phytopathogenic fungi
Authors
Hanan A Alomari, Fatimah O Alotibi, Abdulaziz A Al-Askar
Abstract
Many
medicinal plant extracts have been shown to have antifungal efficacy against a
wide variety of phytopathogenic fungi. The aim of this study was to estimate the antifungal activity of the aqueous extract of Pulicaria undulata against nine pathogenic fungal species (Fusarium solani, Fusarium
oxysporum, Fusarium proliferatum, Fusarium verticilliodes, Macrophomina
phaseolina, Curvularia austriaca, Drechslera halodes, Bipolaris sp.,
Alternaria alternata). The study was performed using three concentrations
of the P. undulata aqueous extracts, i.e., 5%, 10% and 20%. Scanning
Electron Microscopy (SEM) was used to examine ultrastructural and
morphological alterations of treated and untreated mycelia of Drechslera halodes. Fourier Transform Infrared (FT-IR) spectrometry was employed to detect the
present functional groups in P. undulata aqueous extracts. The results showed that the aqueous
extracts of P. undulata had an effective activity
against all tested phytopathogenic fungi, according of concentration dependents.
SEM micrographs of untreated fungal cells (control) did not exhibit structural
changes, while the treated fungal cells illustrated deformation of the cellular
structure, distortion and folding of the external surfaces, and compacted spores.
FTIR spectrum analysis of P. undulata aqueous
extract exhibited different phytochemical including glycosides,
fatty acids and aromatic compounds. The study concluded that the aqueous extract of P. undulata might
be used as a natural fungicide, which control plant diseases caused by
phytopathogenic fungi in the agricultural fields.
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Pages:41-47
How to cite this article:
Hanan A Alomari, Fatimah O Alotibi, Abdulaziz A Al-Askar "Evaluation of antifungal activity of aqueous extract of <i>Pulicaria undulata</i> against certain phytopathogenic fungi". International Journal of Biotechnology and Microbiology, Vol 5, Issue 3, 2023, Pages 41-47
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