Polyfunctional Properties of the Entomopathogenic Bacterium in Protecting Potato in Western Siberia

Tsvetkova, V. P.; Штерншис, М. В.; Shatalova, E. I.; Bakhvalov, S.A.; Maslennikova, V. S.; Grishechkina, S.D.

doi:10.13005/bbra/1996

Cited by 3 publications

(3 citation statements)

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“…Similarly, the potassium-solubilizing B. cereus strain WR34 efficiently promoted plant growth and the accumulation of dry biomass of the aerial part of the potato, which increased the yield of this crop by 20% compared to the control plots [153]. Tsvetkova P. et al [158] showed that treatment of potato plantings with Bt ssp. darmstadiensis BtH10 (RCAM 01490) stimulated the accumulation in the crop by up to 1.6 times and led to a more than three-fold decrease in the population of L. decemlineata and an up to twelve-fold decrease in the development of leaf and stolon rot caused by the fungus Rhizoctonia sp.…”

Section: Plant-growth Promoting Effectmentioning

confidence: 99%

Plant-Associated Bacillus thuringiensis and Bacillus cereus: Inside Agents for Biocontrol and Genetic Recombination in Phytomicrobiome

Sorokan,

Gabdrakhmanova,

Kuramshina

et al. 2023

Plants

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Bacillus thuringiensis Berliner (Bt) and B. cereus sensu stricto Frankland and Frankland are closely related species of aerobic, spore-forming bacteria included in the B. cereus sensu lato group. This group is one of the most studied, but it remains also the most mysterious species of bacteria. Despite more than a century of research on the features of these ubiquitous bacteria, there are a lot of questionable issues related to their taxonomy, resistance to external influences, endophytic existence, their place in multidimensional relationships in the ecosystem, and many others. The review summarizes current data on the mutualistic relationships of Bt and B. cereus bacteria with plants, the structure of the phytomicrobiomes including Bt and B. cereus, and the abilities of plant-associated and endophytic strains to improve plant resistance to various environmental factors and its productivity. Key findings on the possibility of the use of Cry gene promoter for transcription of the target dsRNA and simultaneous release of pore-forming proteins and provocation of RNA-interference in pest organisms allow us to consider this group of microorganisms as unique tools of genetic engineering and biological control. This will open the prospects for the development and direct change of plant microbiomes, and possibly serve as the basis for the regulation of the entire agroecosystem.

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Section: Plant-growth Promoting Effectmentioning

confidence: 99%

Plant-Associated Bacillus thuringiensis and Bacillus cereus: Inside Agents for Biocontrol and Genetic Recombination in Phytomicrobiome

Sorokan,

Gabdrakhmanova,

Kuramshina

et al. 2023

Plants

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“…There are few studies on plant disease biocontrol in the region. Existing research is typically related to the biocontrol agents' efficacy on potato (Solanum tuberosum L.) and berry crops, particularly, red raspberry (Rubus idaeus L.) (Shternshis et al, 2006;Bakhvalov et al, 2015;Tsvetkova et al, 2016). We studied these crops because potato is one of the most common food crops in Western Siberia for its resistance to unpredictable changes of weather.…”

Section: Introductionmentioning

confidence: 99%

Biological control of important fungal diseases of potato and raspberry by two Bacillus velezensis strains

Асатурова

Штерншис

Tsvetkova

et al. 2021

PeerJ

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Stem canker and black scurf caused by Rhizoctonia solani are the important diseases in potato, while spur blight caused by Didymella applanata is a major disease in red raspberry. In Western Siberia, both crops are grown predominantly in small-scale farming that requires maximal usage of biological products for plant protection instead of chemicals. We evaluated two promising Bacillus velezensis strains BZR 336 g and BZR 517 isolated in the south of Russia (45°1′N, 38°59′E) for their biological control potentials against the potato and red raspberry diseases under the more severe weather conditions of Western Siberia (55°1′N, 82°55′ E). We tested two techniques to apply biocontrol agents: (1) coating the seeds (potato tubers) and (2) spraying over the plants (raspberry canes). In each case, we estimated B. velezensis strains on two plant cultivars differed by the disease resistance. The degree of B. velezensis influence on disease incidence and severity depended on the bacterial strain, the protected plant, and its cultivar. We also demonstrated that two B. velezensis strains significantly stimulated plant growth of potato, which contributed to the plant productivity on both cultivars. The BZR 336 g strain affected the potato productivity more than the BZR 517 strain. Under the influence of both bacterial strains, raspberry yield was significantly higher compared to the control on the susceptible cultivar. These findings indicated that two southern B. velezensis strains had proved their efficacy as biological control agents in the control of the serious fungal infection of potato and raspberry plants under the more severe ecological conditions of Western Siberia. For the first time, we demonstrated B. velezensis strains potential for use as biological control agents against R. solani on potato, and against D. applanata on red raspberry.

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“…Негативное воздействие химических удобрений, пестицидов, гербицидов можно уменьшить с помощью микробных препаратов, которые играют важную роль в достижении экологически устойчивого сельского хозяйства. Применение данных препаратов также оказывает влияние на плодородие почвы, увеличивая пестицидную нагрузку на агробиоценозы [2][3][4].…”

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Improvement of the phytosanitary condition and productivity of potatoes under the influence of promising strains of bacteria of the genus Bacillus

Shelikhova¹,

Maslennikova

Tsvetkova

et al. 2021

Agrarnaâ nauka

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Улучшение фитосанитарного состояния и продуктивности картофеля под действием перспективных штаммов бактерий рода Bacillus РЕЗЮМЕ Актуальность. Для защиты картофеля от болезней в настоящее время применяют химические пестициды. Их главным преимуществом является эффективность, массовость и быстрота. Главный недостаток -опасное для жизни человека и теплокровных животных токсичное воздействие, а также гибель полезных насекомых (пчел, шмелей), опыляющих растения. К тому же у большинства вредоносных бактерий и грибов вырабатывается устойчивость к воздействию химикатов, что заставляет производителей создавать новые, все более токсичные препараты. Для решения этой задачи первостепенное значение имеет совершенствование технологии возделывания картофеля в сторону ее биологизации, то есть поиск биологических агентов, создание и применение на их основе биопрепаратов для защиты картофеля и получения экологически безопасной продукции. Методы. Целью исследования являлась оценка ростостимулирующего и антифунгального действия бактерий рода Bacillus на картофеле сорта Тулеевский. Полевые опыты проводились период 2019-2020 гг. в Новосибирской области, г. Новосибирск, УПХ «Сад Мичуринцев» Новосибирского ГАУ. Для улучшения морфометрических показателей и снижения распространенности ризоктониоза клубни картофеля обрабатывали штаммами бактерий рода Bacillus: B. thuringiensis ssp. morrisoni; B. thuringiensis ssp. dacota; B. subtilis; B. liheniformis. В качестве эталона применяли Фитоспорин-М, П (B. subtilis штамм 26 Д).Результаты. Лучшие результаты (в среднем за 2 года) получены в варианте с применением штамма B. subtilis, который обеспечил увеличение биомассы растений в 1,7 (2019 г.) и в 1,2 (2020 г.) раза и количество столонов на 43% по сравнению с контрольным вариантом. Применение штамма B. thuringiensis spp. dacota в 2019 году обеспечило увеличение длина наземной части на 10%, в 1,2 раза -количество стеблей и в 1,6 раза -столонов. Распространенность возбудителя черной парши во все сроки учета снижалась в 1,7-3,7 раза относительно контроля в варианте B. subtilis, а на 10-й неделе учета -в 3,5 (2019) и 2,6 (2020) раза относительно эталона. Применение бактериальных штаммов позволило получить более качественный и высокий урожай по сравнению с контрольным вариантом и эталоном. При использовании штаммов B. thuringiensis ssp. morrisoni и B. thuringiensis ssp. dacota в 2019 году урожайность увеличилась в 1,4 и 1,5 раза, соответственно, а в 2020 году штаммов B. subtilis и B. thuringiensis ssp. morrisoni -в 1,2 и 1,3 раза, соответственно. Improvement of the phytosanitary condition and productivity of potatoes under the influence of promising strains of bacteria of the genus Bacillus ABSTRACTRelevance. Chemical pesticides are currently used to protect potatoes from diseases. Their main advantage is efficiency, mass scale and speed. The main disadvantage is the dangerous to human life and warm-blooded animals toxic effect, as well as the death of beneficial insects (bees, bumblebees) pollinating plants. In addition, most harmful bacteria and fung...

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Polyfunctional Properties of the Entomopathogenic Bacterium in Protecting Potato in Western Siberia

Cited by 3 publications

References 0 publications

Plant-Associated Bacillus thuringiensis and Bacillus cereus: Inside Agents for Biocontrol and Genetic Recombination in Phytomicrobiome

Plant-Associated Bacillus thuringiensis and Bacillus cereus: Inside Agents for Biocontrol and Genetic Recombination in Phytomicrobiome

Biological control of important fungal diseases of potato and raspberry by two Bacillus velezensis strains

Improvement of the phytosanitary condition and productivity of potatoes under the influence of promising strains of bacteria of the genus Bacillus

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