Athelia (Sclerotium) rolfsii in Allium sativum: potential biocontrol agents and their effects on plant metabolites

Abstract

Garlic (Allium sativum L.) plays an important role in popular culture due to its dietary and medicinal uses. It is also used to produce a wide range of pharmacologically interesting molecules. Several pathogens affect garlic plants, especially Athelia (Sclerotium) rolfsii, a fungus that is widespread and causes large economic losses. It causes direct damage to crops and leads to plant stress, which induces secondary metabolite production in plants. The use of microorganisms as biocontrol agents may induce the production of beneficial metabolites in plants that will protect it and promote resistance to pathogen attack. In addition to suppressing disease, biological control agents may have elicitor effects that could induce an increase in the production of useful bioactive secondary metabolites in plants, some of which may be of pharmacological interest. Therefore, the search for new biological control agents should also consider their potential as elicitor agents. This paper presents an analysis of the biological control of Athelia (Sclerotium) rolfsii by antagonistic microrganisms, the potential of yeasts and bacteria of the genus Bacillus for the biocontrol of phytopathogens, microrganisms influence in nutritional and bioactive compounds content of interest to the pharmaceutical industry.

Rhizosphere Microbiomes of Potato Cultivated under Bacillus subtilis Treatment Influence the Quality of Potato Tubers

“…Moreover, Bacillus strains exhibit their biocontrol capacity predominantly through inhibitory activity on the growth of plant pathogens as well as inducing systemic resistance in plants and competing for ecological niches with plant pathogens [ 21 ]. For example, yeasts and bacteria of the genus Bacillus serve as biological control agents of Athelia ( Sclerotium ) rolfsii through antagonistic interactions [ 22 ]. Bacterial endophytes suppress stripe rust infection and enhance wheat yields, which can be exploited as potential biocontrol agents of wheat rusts [ 23 ].…”

Avaliação Da Repelência De Allium Sativum, L. (Alho) Visando O Controle De Nauphoeta Cinerea (Olivier, 1789)

“…As altas quantidades de amido e compostos aromáticos participam da composição do alho o que significa que possui um alto valor medicinal e sabor peculiar. Também é utilizado como fitoterápico devido às suas diversas propriedades farmacológicas (CAVALCANTI et al, 2018). O seu forte odor está relacionado com a presença de metabólitos secundários, como compostos organosulfurados, que protegem a planta contra insetos e fitopatógenos (KUSANO et al, 2016).…”

Effects of Microbial Fertilizer on the Growth, Physiology, and Chlorophyll Fluorescence Response of Spinach Seedlings

“…Bacillus is a type of growth-promoting bacteria that can produce phytase at the rhizosphere of plants. It has strong resistance to ultraviolet light, high salt, high acid, high heat, and radiation, with the capacity to inhibit bacteria, prevent disease, and increase production (Cavalcanti et al, 2018;Guo et al, 2009). Bacillus subtilis can improve the stress resistance of plants (Pliego and Ramos., 2010) and the availability of nitrogen and phosphorus in soil (Idriss and Borriss., 2002).…”