A Little Helper: Beneficial Bacteria with Growth-Promoting Mechanisms Can Reduce Asian Soybean Rust Severity in a Cell-Free Formulation
Growth-promoting bacteria are already used in sustainable agricultural systems in Brazil. The market is dominated by inoculants and biological pesticides, which do not reach the full potential of this tool in the agricultural sector. This study aimed to evaluate four bacterial strains for the presen...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-10-01
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| Series: | Agronomy |
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| Online Access: | https://www.mdpi.com/2073-4395/12/11/2635 |
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| author | Victor Hugo Buttrós Neílton Antônio Fiusa Araújo Vinícius de Abreu D’Ávila Maysa Mathias Alves Pereira Dirceu de Sousa Melo Moacir Pasqual Joyce Dória |
| author_facet | Victor Hugo Buttrós Neílton Antônio Fiusa Araújo Vinícius de Abreu D’Ávila Maysa Mathias Alves Pereira Dirceu de Sousa Melo Moacir Pasqual Joyce Dória |
| author_sort | Victor Hugo Buttrós |
| collection | DOAJ |
| description | Growth-promoting bacteria are already used in sustainable agricultural systems in Brazil. The market is dominated by inoculants and biological pesticides, which do not reach the full potential of this tool in the agricultural sector. This study aimed to evaluate four bacterial strains for the presence of growth promotion mechanisms, as well as the reduction of Asian rust severity in soybean plants and its effects on three antioxidant enzymes during pathogenesis. The plants were treated using the bacterial cells and/or their biosurfactants before inoculation of the pathogen (IOP). Severity was measured based on a diagrammatic scale at 14, 18 and 21 days after IOP, and the activities of the enzymes SOD, CAT, and APX were evaluated 21 days after IOP. Treatments containing only bacterial cells were not efficient in reducing the severity, with losses of leaf area reaching 15%, while the addition of biosurfactants led to a result that is similar to the biofungicide, based on <i>Bacillus subtilis</i> (Serenade<sup>®</sup>). The presence of direct growth promotion mechanisms can be observed in all isolates, as well as the role of bacterial metabolites, especially lipopeptides, in the biological control of diseases and the modulation of the plant’s immune response. |
| first_indexed | 2024-03-09T19:22:26Z |
| format | Article |
| id | doaj.art-e6aece32bf1b4466913cc7d1c28f7846 |
| institution | Directory Open Access Journal |
| issn | 2073-4395 |
| language | English |
| last_indexed | 2024-03-09T19:22:26Z |
| publishDate | 2022-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Agronomy |
| spelling | doaj.art-e6aece32bf1b4466913cc7d1c28f78462023-11-24T03:19:37ZengMDPI AGAgronomy2073-43952022-10-011211263510.3390/agronomy12112635A Little Helper: Beneficial Bacteria with Growth-Promoting Mechanisms Can Reduce Asian Soybean Rust Severity in a Cell-Free FormulationVictor Hugo Buttrós0Neílton Antônio Fiusa Araújo1Vinícius de Abreu D’Ávila2Maysa Mathias Alves Pereira3Dirceu de Sousa Melo4Moacir Pasqual5Joyce Dória6Department of Biology, Federal University of Lavras, Lavras 37200-900, Minas Gerais, BrazilDepartment of Agriculture, Federal University of Lavras, Lavras 37200-900, Minas Gerais, BrazilDepartment of Agronomy, State University of Minas Gerais, Belo Horizonte 37900-106, Minas Gerais, BrazilDepartment of Agriculture, Federal University of Lavras, Lavras 37200-900, Minas Gerais, BrazilDepartment of Biology, Federal University of Lavras, Lavras 37200-900, Minas Gerais, BrazilDepartment of Agriculture, Federal University of Lavras, Lavras 37200-900, Minas Gerais, BrazilDepartment of Agriculture, Federal University of Lavras, Lavras 37200-900, Minas Gerais, BrazilGrowth-promoting bacteria are already used in sustainable agricultural systems in Brazil. The market is dominated by inoculants and biological pesticides, which do not reach the full potential of this tool in the agricultural sector. This study aimed to evaluate four bacterial strains for the presence of growth promotion mechanisms, as well as the reduction of Asian rust severity in soybean plants and its effects on three antioxidant enzymes during pathogenesis. The plants were treated using the bacterial cells and/or their biosurfactants before inoculation of the pathogen (IOP). Severity was measured based on a diagrammatic scale at 14, 18 and 21 days after IOP, and the activities of the enzymes SOD, CAT, and APX were evaluated 21 days after IOP. Treatments containing only bacterial cells were not efficient in reducing the severity, with losses of leaf area reaching 15%, while the addition of biosurfactants led to a result that is similar to the biofungicide, based on <i>Bacillus subtilis</i> (Serenade<sup>®</sup>). The presence of direct growth promotion mechanisms can be observed in all isolates, as well as the role of bacterial metabolites, especially lipopeptides, in the biological control of diseases and the modulation of the plant’s immune response.https://www.mdpi.com/2073-4395/12/11/2635biostimulantssoybean rustbiological controlbiosurfactantsantioxidant enzymesphotosynthetic pigments |
| spellingShingle | Victor Hugo Buttrós Neílton Antônio Fiusa Araújo Vinícius de Abreu D’Ávila Maysa Mathias Alves Pereira Dirceu de Sousa Melo Moacir Pasqual Joyce Dória A Little Helper: Beneficial Bacteria with Growth-Promoting Mechanisms Can Reduce Asian Soybean Rust Severity in a Cell-Free Formulation Agronomy biostimulants soybean rust biological control biosurfactants antioxidant enzymes photosynthetic pigments |
| title | A Little Helper: Beneficial Bacteria with Growth-Promoting Mechanisms Can Reduce Asian Soybean Rust Severity in a Cell-Free Formulation |
| title_full | A Little Helper: Beneficial Bacteria with Growth-Promoting Mechanisms Can Reduce Asian Soybean Rust Severity in a Cell-Free Formulation |
| title_fullStr | A Little Helper: Beneficial Bacteria with Growth-Promoting Mechanisms Can Reduce Asian Soybean Rust Severity in a Cell-Free Formulation |
| title_full_unstemmed | A Little Helper: Beneficial Bacteria with Growth-Promoting Mechanisms Can Reduce Asian Soybean Rust Severity in a Cell-Free Formulation |
| title_short | A Little Helper: Beneficial Bacteria with Growth-Promoting Mechanisms Can Reduce Asian Soybean Rust Severity in a Cell-Free Formulation |
| title_sort | little helper beneficial bacteria with growth promoting mechanisms can reduce asian soybean rust severity in a cell free formulation |
| topic | biostimulants soybean rust biological control biosurfactants antioxidant enzymes photosynthetic pigments |
| url | https://www.mdpi.com/2073-4395/12/11/2635 |
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