ANTIBIOGRAM PROPERTIES OF ALOE VERA EXTRACTS AGAINST FUNGAL ISOLATES FROM AGRICULTURAL LAND

AGRICULTURAL MICROBIOLOGY

Pathogenic fungi are the main infectious agents in plants, causing alterations during developmental stages including post-harvest. In soil and vegetables, there is a wide variety of fungal genera causing quality problems related to aspect, nutritional value, organoleptic characteristics, and limited shelf life. In addition, in some cases fungi are indirectly responsible for allergic or toxic disorders among consumers because of the production of mycotoxins or allergens. Generally, phytopathogenic fungi are controlled by synthetic fungicides; however, the use of these is increasingly restricted due to the harmful effects of pesticides on human health and the environment. The increasing demand of production and regulations on the use of agrochemicals and the emergence of pathogens resistant to the products employed, justifies the search for novel active molecules and new control strategies. Currently, there is little evidence on the antimicrobial properties of the medicinal plants under investigation against phytopathogen fungi. Fungi are ubiquitous in the environment, and infection due to fungal pathogens has become more common. The genus Alternaria Nees is widely distributed in nature and its species are among the most common fungi on the phyllo sphere. It includes both plant-pathogenic and plant-saprophytic species that may damage crops in the field or cause post-harvest decays, causing considerable economics losses for farmers and food industries. Soil samples were characterized for the incidence of fungal strains from contaminated agricultural soils. A total of 5 fungal strains were isolated and 33 fungi were characterized using various isolation and identification methods. Soil samples were also characterized for physiochemical properties. There are limited reports on the antimicrobial effects of isolated Aloe Vera components. Shamir were noted high zone of inhibition with ethanol extracted from Aloe Vera baradenisis against Aspergillus spp, penicillium spp, macro spp, rhizobium spp, Fusarium spp, Candida spp. Antimicrobial susceptibility test showed that both the gel and the leaf inhibited the growth of fungal spp. Experiment has been carried out to define the effect if Aloe vera gels In vitro for the fungi.

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