Inhibitory Effect of Plant Extracts on Conidial Germination of the Phytopathogenic Fungus <i>Fusarium oxysporum</i>

Abstract

In an attempt to reduce the use of synthetic fungicides, extensive investigations into the possible exploitation of plant compounds as natural commercial products were performed. The present paper describes the antifungal activity of botanic extracts on the development of <i>Fusarium oxysporum</i>, f.s.p. <i>lycopersici</i>. The tests <i>in vitro</i> were carried out in a multi-well plate assay. The tested plants were classified based on the optical density reached by germinating conidia 24, 48 and 72 hours after inoculation. Among 500 plant species tested, about 84% did not exert significant inhibition, 7.6% showed low inhibition, 5.2% had an intermediate level of antifungal activity, and only 3% inhibited fungal germination completely. These findings suggest that some botanic extracts tested possess antifungal activities against <i>Fusarium oxysporum</i> and could be used as potential antifungal agents for the control of fungal plant diseases

Performance of Natural Antagonists and Commercial Microbiocides towards <i>in Vitro</i> Suppression of Flower Bed Soil-Borne <i>Fusarium oxysporum</i>

“…Our results were in contrast to the knowledge upon garlic extracts, in that they are normally regarded as strong candidate for broad spectrum phytopathogen suppression applications, and due its potency attributed to its soluble volatiles [26]. Likewise a number of herbaceous and medicinal plant resources [27][28][29]…”

HyphaTracker: An ImageJ toolbox for time-resolved analysis of spore germination in filamentous fungi

“…As a prerequisite the germination behaviour was independent of the conidia concentration used during the experiment in the range between 2,000 and 5,000 conidia/µl (Supplementary Fig. S13 ) suggesting no or only minor effects of quorum sensing known from other ascomycetes 43 , 44 under these conditions. Nevertheless, we had to repeat the experiment with CarO deficient mutant several times in order to gain sufficient amount of data (CarO−: 21 germlings/9 exp., CarO + : 67 germlings/3 exp.…”

Antifungal Effect of Different Plant Extracts against Phytopathogenic Fungi Alternaria alternata and Fusarium oxysporum Isolated from Tomato Plant

“…Plant extracts are safe, healthy and environmentally friendly alternatives to synthetic fungicides. These natural products can be used in plant production because of specific toxicity to filamentous fungi without destroying non-target organisms [3,4]. Some plant families have fungicidal activity against Alternaria and Fusarium species such as Asteraceae [3,5], Oleaceae [3,6], and Lamiaceae [3,7].…”

“…These natural products can be used in plant production because of specific toxicity to filamentous fungi without destroying non-target organisms [3,4]. Some plant families have fungicidal activity against Alternaria and Fusarium species such as Asteraceae [3,5], Oleaceae [3,6], and Lamiaceae [3,7]. Mohana et al [8] assayed the antifungal activity of 12 methanol plant extracts belong to different families against eight seed-borne pathogenic fungi, Alternaria alternata, Aspergillus flavus, Curvularia lunata, Drechslera oryzae, D. halodes, Fusarium moniliforme, Pyricularia oryzae and Trichoconis padwickii.…”