Bio-nematicidal activities by culture filtrate of Bacillus subtilis HussainT-AMU: new promising biosurfactant bioagent for the management of Root Galling caused by Meloidogyne incognita

Hussain, Touseef; Haris, Mohammad; Shakeel, Adnan; Ahmad, Gufran; Khan, Abrar Ahmad; Khan, M. A.

doi:10.1007/s42535-020-00099-5

Cited by 29 publications

(9 citation statements)

References 57 publications

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“…Laboratory studies of B. subtilis strains exhibiting nematicidal activity against M. incognita showed that the use of a cell suspension provided the mortality of juveniles at the level of 39.3%, while the mortality rate when using the supernatant was 82.3–90.7%, which may be caused by the ability of B. subtilis to produce lytic enzymes [ 36 ]. These data are confirmed by the studies carried out in 2020, during which liquid culture filtrate caused the death of 90% of juveniles of the second stage and reduced egg hatchability by 97% in vitro [ 37 ].…”

Section: Discussionsupporting

confidence: 52%

Bacillusvelezensis Strains for Protecting Cucumber Plants from Root-Knot Nematode Meloidogyne incognita in a Greenhouse

Асатурова

Bugaeva

Homyak

et al. 2022

Plants

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Meloidogyne incognita Kofoid et White is one of the most dangerous root-knot nematodes in greenhouses. In this study, we evaluated two Bacillus strains (Bacillus velezensis BZR 86 and Bacillus velezensis BZR 277) as promising microbiological agents for protecting cucumber plants from the root-knot nematode M. incognita Kof. The morphological and cultural characteristics and enzymatic activity of the strains have been studied and the optimal conditions for its cultivation have been developed. We have shown the nematicidal activity of these strains against M. incognita. Experiments with the cucumber variety Courage were conducted under greenhouse conditions in 2016–2018. We determined the effect of plant damage with M. incognita to plants on the biometric parameters of underground and aboveground parts of cucumber plants, as well as on the gall formation index and yield. It was found that the treatment of plants with Bacillus strains contributed to an increase in the height of cucumber plants by 7.4–43.1%, an increase in leaf area by 2.7–17.8%, and an increase in root mass by 3.2–16.1% compared with the control plants without treatment. The application of these strains was proved to contribute to an increase in yield by 4.6–45.8% compared to control. Our experiments suggest that the treatment of cucumber plants with two Bacillus strains improved plant health and crop productivity in the greenhouse. B. velezensis BZR 86 and B. velezensis BZR 277 may form the basis for bionematicides to protect cucumber plants from the root-knot nematode M. incognita.

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Section: Discussionsupporting

confidence: 52%

Bacillusvelezensis Strains for Protecting Cucumber Plants from Root-Knot Nematode Meloidogyne incognita in a Greenhouse

Асатурова

Bugaeva

Homyak

et al. 2022

Plants

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“…Similarly, in another study, Akladious et al [ 150 ] evaluated the biosurfactant produced by strain Bacillus licheniformis , which after application significantly controls the pathogen Rhizoctonia solani, the causal agent of root rot in faba beans. Hussain et al [ 151 ] investigated biosurfactants produced by Bacillus subtilis , having bio-nematicidal activities against the pathogen Meloidogyne incognita , which is the causal agent of Root gall. Shalini et al [ 152 ] investigated a glycolipid surfactant produced by the Acinetobacter sp., which showed antagonistic activity against Xanthomonas oryzae P.V.…”

Section: Biosurfactant Application In Plant Disease Managementmentioning

confidence: 99%

Microbial Biosurfactant: A New Frontier for Sustainable Agriculture and Pharmaceutical Industries

Kumar

Singh

Kant³

et al. 2021

Antioxidants

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In the current scenario of changing climatic conditions and the rising global population, there is an urgent need to explore novel, efficient, and economical natural products for the benefit of humankind. Biosurfactants are one of the latest explored microbial synthesized biomolecules that have been used in numerous fields, including agriculture, pharmaceuticals, cosmetics, food processing, and environment-cleaning industries, as a source of raw materials, for the lubrication, wetting, foaming, emulsions formulations, and as stabilizing dispersions. The amphiphilic nature of biosurfactants have shown to be a great advantage, distributing themselves into two immiscible surfaces by reducing the interfacial surface tension and increasing the solubility of hydrophobic compounds. Furthermore, their eco-friendly nature, low or even no toxic nature, durability at higher temperatures, and ability to withstand a wide range of pH fluctuations make microbial surfactants preferable compared to their chemical counterparts. Additionally, biosurfactants can obviate the oxidation flow by eliciting antioxidant properties, antimicrobial and anticancer activities, and drug delivery systems, further broadening their applicability in the food and pharmaceutical industries. Nowadays, biosurfactants have been broadly utilized to improve the soil quality by improving the concentration of trace elements and have either been mixed with pesticides or applied singly on the plant surfaces for plant disease management. In the present review, we summarize the latest research on microbial synthesized biosurfactant compounds, the limiting factors of biosurfactant production, their application in improving soil quality and plant disease management, and their use as antioxidant or antimicrobial compounds in the pharmaceutical industries.

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“…found that Chaetomium globosum CEF-082 and its metabolic ltrate could not only the growth of the plant but also reduce the incidence of soil-borne disease. Some studies also indicated that Bacillus could inhibit the activity of certain enzymes to alleviate their affection for the pathogen (Yarullina et al 2020;Sayago et al 2020;Hussain et al 2020). Furthermore, previous studies demonstrated that Bacillus not only has strong stress resistance but also can improve the soil environment (Kannan et al 2022;Xin et al 2021).…”

Section: Discussionmentioning

confidence: 99%

Effects of Bacillus Safensis YY-01 on the Growth of Tomato

Yang

Zhang

Song

et al. 2022

Preprint

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Purpose Although the use of microbial fertilizers is still far lower than that of chemical fertilizers in the planting industry, it has still received much attention for its non-toxic and pollution-free characteristics. Here a promising bacterial strain was successfully isolated from the tomato rhizosphere and identified as Bacillus Safensis YY-01 with 16S rDNA sequence, which was found to significantly enhance both the growth of tomato and the relative abundance of beneficial microorganisms such as Bacillus, Chaetomium, Proteobacteria, Actinobacteria, and Chloroflexi. B. Safensis YY-01 may be a strong candidate as one bacterial strain of microbial fertilizers. Methods B. Safensis YY-01 was isolated and cultured, which was used as leaf fertilizer to spray on the phylloplane of tomato every week. The effect of B. Safensis YY-01on the height, chlorophyll, and peroxidase (POD) activity of tomato was investigated, moreover, the microbial community structure of tomato rhizosphere soil was analyzed through high-throughput sequencing technology. Results Compared with the control, the height, chlorophyll A, chlorophyll B, total chlorophyll, and POD activity of tomato Haoliang No.998 were increased by 12.8%, 17.1%, 11.8%, 14.8%, and 37.5%, respectively, and yingfen No.8 were increased by 14.1%, 7.8%, 10.2%, 10.7%, and 7.3%, respectively. Further, the microbial community structure in rhizosphere soil of tomato Haoliang No.998 was analyzed and showed that the relative abundance of beneficial microorganisms such as Proteobacteria, Actinobacteria, Chloroflexi, Bacillus, and Gemmatimonadota increased significantly, and the relative abundance of tomato yingfen No.8’s Acidobacteriota, Actinobacteria, and Bacillus were also increased significantly. Conclusion A promising bacterial strain of B. Safensis YY-01 was successfully isolated, which was beneficial to both the growth of tomatoes and the relative abundance of helpful microorganisms in the rhizosphere soil of tomatoes.

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Bio-nematicidal activities by culture filtrate of Bacillus subtilis HussainT-AMU: new promising biosurfactant bioagent for the management of Root Galling caused by Meloidogyne incognita

Cited by 29 publications

References 57 publications

Bacillusvelezensis Strains for Protecting Cucumber Plants from Root-Knot Nematode Meloidogyne incognita in a Greenhouse

Bacillusvelezensis Strains for Protecting Cucumber Plants from Root-Knot Nematode Meloidogyne incognita in a Greenhouse

Microbial Biosurfactant: A New Frontier for Sustainable Agriculture and Pharmaceutical Industries

Effects of Bacillus Safensis YY-01 on the Growth of Tomato

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