Abstract
The article presents the results of the study of growth-stimulating and antifungal activity of strainsBacillus thuringiensisssp.fukuokaensisssp.morrisoni, ssp.toumanoffi, ssp.dakotaand ssp.amagiensis. The positive effect of all studied strains on morphometric parameters of spring rape and spring wheat seedlings was revealed. Treatment of spring rape seeds with spore-crystal mixtures ofB. thuringiensiscontributed to a significant increase in the length of roots by 1.93.4 times and sprouts – by 1.3-1.9 times, depending on the strain. Stimulation of plant growth was also observed in the inoculation of spring wheat seeds with suspension strains ofB. thuringiensis. However, a significant positive effect was revealed only in the variant with the use of the strain ofB. thuringiensisssp.fukuokaensis. There was a downward trend in the number of spring wheat seedlings affected with root rot when the seeds were treated with the strains ofB. thuringiensisssp.morrisoni,ssp.dakota,ssp.amagiensis. In the experiments with pure cultures it was found that all tested strains ofB. thuringiensisshowed a high degree of antagonistic activity to two types of phytopathogens. The inhibitory activity of the strains ofB. thuringiensison the 10th day of the experiment with regard toFusarium oxysporumranged from 68 to 83%,Alternaria alternata– from 71 to 89%. The analysis showed that all studied strains ofB. thuringiensisstimulated the growth of plants of spring rape and spring wheat and showed antifungal activity. The obtained data are of interest for further research in order to create multifunctional biological preparations for plant protection.
Highlights
Конфликт интересов Авторы заявляют об отсутствии конфликта интересов
The article presents the results of the study of growth-stimulating and antifungal activity of strains Bacillus thuringiensis ssp. fukuokaensis ssp. morrisoni, ssp. toumanoffi, ssp. dakota and ssp. amagiensis
Stimulation of plant growth was observed in the inoculation of spring wheat seeds with suspension strains of B. thuringiensis
Summary
Горобей И.М., Калмыкова Г.В., Давыдова Н.В., Андреева И.В. Сибирский федеральный научный центр агробиотехнологий Российской академии наук Новосибирская область, р.п. For citation: Gorobey I.M., Kalmykova G.V., Davydova N.V., Andreeva I.V. Shtammy Bacillus thuringiensis s rostostimuliruyushchei i fungitsidnoi aktivnost’yu [Strains of Bacillus Thuringiensis with growth-stimulating and fungicidal activity]. Стимуляция роста растений отмечена и при инокуляции семян яровой пшеницы суспензиями штаммов B. thuringiensis, однако достоверное положительное действие выявлено только в варианте с использованием штамма B. thuringiensis ssp. The article presents the results of the study of growth-stimulating and antifungal activity of strains Bacillus thuringiensis ssp. Strains of Bacillus thuringiensis with growth-stimulating and fungicidal activity. Проведенный анализ показал, что все исследуемые штаммы B. thuringiensis стимулировали рост растений ярового рапса и яровой пшеницы и проявляли антифунгальную активность. The analysis showed that all studied strains of B. thuringiensis stimulated the growth of plants of spring rape and spring wheat and showed antifungal activity. Полифункциональные свойства B. thuringiensis создают большие возможности для применения этой энтомопатогенной бактерии как ростостимулятора и индуктора защитных механизмов растений против болез-
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