Specific features of antagonism of &lt;i&gt;Bacillus&lt;/i&gt; bacteria against toxinogenic &lt;i&gt;Fusarium&lt;/i&gt; fungi in protecting plants against disease and contamination with mycotoxins (review)

Aim – to study the biocontrol properties of B. velezensis BZR 336g and B. velezensis BZR 517 strains against Fusarium pathogens using the fungus Fusarium graminearum as an example and to reduce the accumulation of deoxynivalenol (DON) and zearalenone (ZEN) in vitro.Materials and Methods. A study of the toxinogenicity of F. graminearum fungal strains was undertaken on rice and wheat grains and the effect of B. velezensis BZR 336g and B. velezensis BZR 517 strains on the growth of the fungus was studied on wheat grains and by the double cultures method. An experiment to study the effect of a liquid culture and supernatant of bacteria was carried out on wheat grains and the content of DON and ZEN in wheat grains was analyzed by HPLC and enzyme immunoassay.Results. It was found that two strains of the fungus F. graminearum were able to produce a high level of mycotoxins, while the strain F. graminearum 60318 had a higher growth rate. The B. velezensis BZR 336g and B. velezensis BZR 517 strains produced lipopeptide exometabolites and inhibited the growth of the F. graminearum 60318 strain. in vitro, while the content of ZEN remained at the control level.Conclusion. The ability of two strains of bacteria B. velezensis BZR 336g and B. velezensis BZR 517 to suppress the growth of the fungus F. graminearum 60318, as well as to inhibit the accumulation of mycotoxins in wheat grain in vitro, suggests that an increase in the content of antagonist bacteria B. velezensis BZR 336g and B. velezensis BZR 517 in the wheat microbiota can contribute to the suppression of the growth and harm of the fungus F. graminearum 60318.

show abstract

Promising bacteria strains of the genus Bacillus in plant protection against fusariosis and mycotoxin contamination

Allakhverdyan

Сидорова

Асатурова

2022

Ûg Ross.: èkol. razvit.

View full text Add to dashboard Cite

show abstract

Determining the role of microelements for the synthesis of antifungal metabolites of the antagonistic Bacillus velezensis strain

Томашевич

Сидорова

Kiseleva

et al. 2022

Ûg Ross.: èkol. razvit.

View full text Add to dashboard Cite

Aim. To study the structure of bacteria exometabolites of the Bacillus velezensis BZR336g strain using the GC×GC‐MS method when cultivated on nutrient media differing in the content of microelements.Material and Methods. The object of the study is the B. velezensis BZR336g bacterium strain. It shows promise for the development of a biopreparation on its basis for protecting plants against phytopathogenic fungi. Exometabolites were isolated from the liquid culture and their metabolomic profile was analysed with the GC×GC‐MS method using a LECO Pegasus BT‐4D device.Results. Among the identified compounds one can see the precursors of biologically active metabolites of bacteria of the strain B. velezensis BZR336g. Analysis of the total accumulation of fatty acids and their analogs, as well as of amino acids and peptides, by B. velezensis BZR336g bacteria on nutrient media differing in the content of metal ions, shows that Co2+ ions in combination with Mn2+ and Zn2+ ions play an important role in inducing their synthesis. The presence of the Co2+ ion in the nutrient medium has the greatest influence on the synthesis of peptide components. If it is removed from the nutrient medium, the amount of amino acids and peptides decreases by almost two times. Benzene compounds can act as precursors of aromatic hydrocarbons, which are also of interest in the analysis of bacterial metabolism, since they have antimicrobial activity.Conclusions. The number of compounds that are precursors of lipopeptide metabolites depends on the content of metal ions in the nutrient medium. This fact may vary depending on the combination in which the metals are present.

show abstract

Screening of adaptogens potentially effective in mycotoxicosis

Yusupova,

Mishina,

Semyonov

et al. 2024

jour

View full text Add to dashboard Cite

Microscopic mold fungi are pathogens invisible to the naked eye that secrete dangerous metabolic products – mycotoxins. When exposed to various factors, mycotoxins can accumulate in plant and animal products. Getting into food and, as a result, into a living organism, they can lead to the appearance of mycoses and mycotoxicoses. The most common T-2 toxin of the Russian Federation territory. Due to the impossibility of completely eliminating microscopic fungi, the search for affordable preventive measures with detoxifying, immunostimulating properties remains relevant and promising. The aim of the study was to select adaptogens of various origins and evaluate their effectiveness in T-2 toxicosis of rats. The research was conducted on the basis of mycotoxin laboratory of the Federal state budgetary institution «Federal center for toxicological, radiation and biological safety» (Kazan). The tested adaptogens were echinacea purpurea grass, humic acids, biogenic stimulant ASD-2, zeolite from the Shatrashan deposit of the Republic of Tatarstan, and dry dead bee’s powder. In the course of work, the use of adaptogens such as echinacea purpurea, zeolite and dead bees turned out to be the most effective in relation to the survival of rats with T-2 toxicosis. The expected effect of a uniform increase in body weight of rats occurred, in turn, in groups of adaptogens with sorption capacity (humic acids, zeolite). The most striking positive picture during hematological examination was observed in groups using zeolite and dead bees. Based on the totality of the results obtained, it was concluded that zeolite and dead bees were the most effective in leveling the negative effects of T-2 toxicosis. The results obtained can become the basis for further development of a preventive complex.

show abstract

scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.

Contact Info

hi@scite.ai

10624 S. Eastern Ave., Ste. A-614

Henderson, NV 89052, USA

Blog Terms and Conditions API Terms Privacy Policy Contact Cookie Preferences Do Not Sell or Share My Personal Information

Made with 💙 for researchers

Part of the Research Solutions Family.

Specific features of antagonism of <i>Bacillus</i> bacteria against toxinogenic <i>Fusarium</i> fungi in protecting plants against disease and contamination with mycotoxins (review)

Cited by 3 publications

References 81 publications

Promising bacteria strains of the genus Bacillus in plant protection against fusariosis and mycotoxin contamination

Promising bacteria strains of the genus Bacillus in plant protection against fusariosis and mycotoxin contamination

Determining the role of microelements for the synthesis of antifungal metabolites of the antagonistic <i>Bacillus velezensis</i> strain

Screening of adaptogens potentially effective in mycotoxicosis

Contact Info

Product

Resources

About