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J. Fungi 2018, 4(1), 23; https://doi.org/10.3390/jof4010023

Inner Leaf Gel of Aloe striata Induces Adhesion-Reducing Morphological Hyphal Aberrations

1
Department of Microbiology, Miami University, Oxford, OH 45056, USA
2
Department of Biology, Miami University, Oxford, OH 45056, USA
*
Author to whom correspondence should be addressed.
Received: 12 January 2018 / Revised: 3 February 2018 / Accepted: 6 February 2018 / Published: 8 February 2018
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Abstract

Fungi, particularly molds that are cosmopolitan in soils, are frequent etiologic agents of opportunistic mycoses. Members of the Fusarium solani and Fusarium oxysporum species complexes are the most commonly implicated etiologic agents of opportunistic fusarial infections in mammals, while Paecilomyces variotii is one of the most frequently encountered Paecilomyces species in human infections. Prevention and treatment of these mycoses are problematic because available antimycotics are limited and often have toxic side effects. Popular folk medicines, such as the inner leaf gel from Aloe spp., offer potential sources for novel antimycotic compounds. To screen for antifungal properties of Aloe striata, we treated conidia of three strains each of F. solani, F. oxysporum, and P. variotii with homogenized and filtered inner leaf gel. Exposure to gel homogenates caused minimal inhibition of conidial germination in tested strains. However, it significantly increased the frequency of hyphal aberrations characterized by increased hyphal diameters that resulted in intervals of non-parallel cell walls. Non-parallel cell walls ostensibly reduce total hyphal surface area available for adhesion. We found a significant decrease in the ability of aberrated P. variotii hyphae to remain adhered to microscope slides after repeated washing with reverse osmosis water. Our results suggest that treatment with A. striata contributes to a decrease in the adhesion frequency of tested P. variotii strains. View Full-Text
Keywords: Aloe; adhesion; antifungal; Aloe striata; germination; aberrations; Fusarium; Paecilomyces Aloe; adhesion; antifungal; Aloe striata; germination; aberrations; Fusarium; Paecilomyces
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Wada, G.; Vincent, M.; Lee, M. Inner Leaf Gel of Aloe striata Induces Adhesion-Reducing Morphological Hyphal Aberrations. J. Fungi 2018, 4, 23.

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