Bacillus amyloliquefaciens as an excellent agent for biofertilizer and biocontrol in agriculture: An overview for its mechanisms

Luo, Lin; Zhao, Chunzhang; Wang, En Tao; Raza, Ali; Yin, Chunying

doi:10.1016/j.micres.2022.127016

Cited by 86 publications

(72 citation statements)

References 129 publications

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“…PGPR have multiple mechanisms of action, including increasing soil nutrient availability, regulating microbial communities in the rhizosphere, increasing the proportion of beneficial microorganisms for plants, and producing phytohormones and volatile compounds that promote root growth. Moreover, they act by increasing nutrient absorption, controlling phytopathogens through the production of antimicrobial metabolites and volatile compounds, triggering an induced systemic response in plants, and inducing tolerance to abiotic stresses in plants 15 , 17 , 18 . In this context, the search for multifunctional strains with multiple effects of growth promotion, phosphate solubilization, and biocontrol has become essential to developing more effective inoculants for plant development.…”

Section: Discussionmentioning

confidence: 99%

“…For strain Ag75, cyclic lipopeptides (surfactin and fengycin) were identified, which have an important antagonistic effect on several fungal and bacterial pathogens, stimulating plant defense mechanisms and biofilm formation—a key factor for successful colonization of biological control agents 17 , 26 , 27 . Another large class of non-ribosomal peptides identified were polyketides (difficidin, bacillaene, and macrolactin), which also play a role in antimicrobial activity 15 , 17 , 28 .…”

Section: Discussionmentioning

confidence: 99%

“…can produce a wide range of antagonist compounds with different structures, having 5–8% of the genome dedicated to the biosynthesis of these secondary metabolites 15 . Non-ribosomal peptides and lipopeptides, polyketide compounds, bacteriocins, and siderophores are the main bioactive molecules controlling plant diseases 16 , 17 .…”

Section: Introductionmentioning

confidence: 99%

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Bacillus velezensis strain Ag75 as a new multifunctional agent for biocontrol, phosphate solubilization and growth promotion in maize and soybean crops

Mosela

Andrade

Massucato

et al. 2022

Sci Rep

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Soybean and maize are some of the main drivers of Brazilian agribusiness. However, biotic and abiotic factors are of great concern, causing huge grain yield and quality losses. Phosphorus (P) deficiency is important among the abiotic factors because most Brazilian soils have a highly P-fixing nature. Thus, large amounts of phosphate fertilizers are regularly applied to overcome the rapid precipitation of P. Searching for alternatives to improve the use of P by crops is essential to reduce the demand for P input. The use of multifunctional rhizobacteria can be considered one of these alternatives. In this sense, the objective of the present work was to select and validate bacterial strains with triple action (plant growth promoter, phosphate solubilizer, and biocontrol agent) in maize and soybean, aiming to develop a multifunctional microbial inoculant for Brazilian agriculture. Bacterial strains with high indole acetic acid (IAA) production, phosphate solubilization, and antifungal activity against soil pathogenic fungi (Rhizoctonia solani, Macrophomina phaseolina, and Fusarium solani) were selected from the maize rhizosphere. Then, they were evaluated as growth promoters in maize under greenhouse conditions. Based on this study, strain 03 (Ag75) was selected due to its high potential for increasing biomass (root and shoot) and shoot P content in maize. This strain was identified through genomic sequencing as Bacillus velezensis. In field experiments, the inoculation of this bacterium increased maize and soybean yields by 17.8 and 26.5%, respectively, compared to the control (25 kg P2O5). In addition, the inoculation results did not differ from the control with 84 kg P2O5, indicating that it is possible to reduce the application of phosphate in these crops. Thus, the Ag75 strain has great potential for developing a multifunctional microbial inoculant that combines the ability to solubilize phosphate, promote plant growth, and be a biocontrol agent for several phytopathogenic fungi.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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Bacillus velezensis strain Ag75 as a new multifunctional agent for biocontrol, phosphate solubilization and growth promotion in maize and soybean crops

Mosela

Andrade

Massucato

et al. 2022

Sci Rep

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“…153 The B. pumilus group species, which also show antifungal properties, have been identified as plant pathogens in pine and ginger and can cause cutaneous infection in humans. 152 B. amyloliquefaciens group species have been shown to cause no pathogenic effects, 154 which is an important advantage compared to the other species. This characteristic is especially important when applying the bacteria in postharvest products given that these products are going to be directly consumed.…”

Section: Advantagesmentioning

confidence: 99%

“…Although, as indicated in the Introduction section, B. subtilis group species have been thoroughly used as biocontrol agents, virulence potentials to cause lethal diseases in vertebrate animals, brain damage, and pneumonia in humans have been reported for B. subtilis strains. Although some strains from the B. cereus group have been reported to show antifungal activity, numerous strains from this group are pathogenic to humans and their use as biocontrol agents is almost discarded .…”

Section: Advantagesmentioning

confidence: 99%

Biocontrol Ability of the Bacillus amyloliquefaciens Group, B. amyloliquefaciens, B. velezensis, B. nakamurai, and B. siamensis, for the Management of Fungal Postharvest Diseases: A Review

Wang

Herrera‐Balandrano

Wang

et al. 2022

J. Agric. Food Chem.

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The Bacillus amyloliquefaciens group, composed of B. amyloliquefaciens, B. velezensis, B. nakamurai, and B. siamensis, has recently emerged as an interesting source of biocontrol agents for the management of pathogenic fungi. In this review, all the reports regarding the ability of these species to control postharvest fungal diseases have been covered for the first time. B. amyloliquefaciens species showed various antifungal mechanisms, including production of antifungal lipopeptides and volatile organic compounds, competition for nutrients, and induction of disease resistance. Most reports discussed their use for the control of fruit diseases. Several strains were studied in combination with additives, improving their inhibitory efficacies. In addition, a few strains have been commercialized. Overall, studies showed that B. amyloliquefaciens species are a suitable environmentally friendly alternative for the control of postharvest diseases. However, there are still crucial knowledge gaps to improve their efficacy and host range.

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Exploring Bacillus subtilis: Ecology, biotechnological applications, and future prospects

Akinsemolu,

Onyeaka,

Odion

et al. 2024

J Basic Microbiol

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From its early identification by Christian Gottfried Ehrenberg to its current prominence in scientific research, Bacillus subtilis (B. subtilis) has emerged as a foundational model organism in microbiology. This comprehensive review delves deep into its genetic, physiological, and biochemical intricacies, revealing a sophisticated cellular blueprint. With the incorporation of advanced techniques such as clustered regularly interspaced short palindromic repeats/CRISPR‐associated protein 9 and integrative computational methodologies, the potential applications of B. subtilis span diverse sectors. These encompass its significant contributions to biotechnology, agriculture, and medical fields and its potential for aiding environmental cleanup efforts. Yet, as we move forward, we must grapple with concerns related to safety, ethics, and the practical implementation of our lab findings in everyday scenarios. As our understanding of B. subtilis deepens, it is evident that its contributions will be central to pioneering sustainable solutions for global challenges in the years to come.

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Bacillus amyloliquefaciens as an excellent agent for biofertilizer and biocontrol in agriculture: An overview for its mechanisms

Cited by 86 publications

References 129 publications

Bacillus velezensis strain Ag75 as a new multifunctional agent for biocontrol, phosphate solubilization and growth promotion in maize and soybean crops

Bacillus velezensis strain Ag75 as a new multifunctional agent for biocontrol, phosphate solubilization and growth promotion in maize and soybean crops

Biocontrol Ability of the Bacillus amyloliquefaciens Group, B. amyloliquefaciens, B. velezensis, B. nakamurai, and B. siamensis, for the Management of Fungal Postharvest Diseases: A Review

Exploring Bacillus subtilis: Ecology, biotechnological applications, and future prospects

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