Antagonism of plant growth promoting rhizobacteria against the causal agent of the vascular wilting of tomato
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| Natura: | Artículo científico |
| Lingua: | en |
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Universidad Nacional de Colombia
2020
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| _version_ | 1876467320379932672 |
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| author | Narmer Fernando Galeano Vanegas |
| author_facet | Narmer Fernando Galeano Vanegas |
| contents | Antagonism of plant growth promoting rhizobacteria against the causal agent of the vascular wilting of tomato Narmer Fernando Galeano Vanegas Sandra María Marulanda Moreno Beatriz Elena Padilla Hurtado Javier Guillermo Mantilla Afanador Nelson Ceballos Aguirre Gloria María Restrepo Franco Biología dual tests Chitinase activity endoglucanase activity inhibition of germination Use of biotechnological potential of native microorganisms as bio-inputs is having a great impact on agricultural systems. Plant Growth Promoting Rhizobacteria (PGPR), in addition to their beneficial effect on plant growth and on the availability of soil elements, also have an antagonistic effect against different pathogens. In this study, growth promotion mechanisms with emphasis on the antagonism of PGPR isolated from sugarcane and tomato crops were evaluated. Antagonism against Fusarium oxysporum f.sp lycopersici (Fol) was determined by dual tests, inhibition of germination and production of chitinases and endoglucanases. 52 isolates were evaluated and according to their results in dual tests 10 were selected for further analysis. Isolate GIBI127 showed the best percentage of Inhibition Germination (IG) of Fol (59.29%). Then, a selection index was calculated using results from gi, dual tests and growth promotion mechanisms to select five best isolates. Finally, these bacteria were evaluated for chitinases and endoglucanases production using Miller's method. As a result, strain GIBI419 (Burkholderia cepacia) showed a higher production of these enzymes. Selected isolates have antagonistic potential along with plant growth promotion characteristics, which can be used for the development of microbial inoculants which allow the establishment of agricultural systems for tomato cultivation that are sustainable, efficient, and environmentally friendly. 2020 artículo científico 0123-3475 https://www.redalyc.org/articulo.oa?id=77666754004 https://www.redalyc.org/journal/776/77666754004/ https://www.redalyc.org/journal/776/77666754004/html/ https://www.redalyc.org/journal/776/77666754004/77666754004.epub https://www.redalyc.org/journal/776/77666754004/movil 10.15446/rev.colomb.biote.v22n2.79449 en http://www.redalyc.org/revista.oa?id=776 Revista Colombiana de Biotecnología application/pdf Universidad Nacional de Colombia Revista Colombiana de Biotecnología (Colombia) Num.2 Vol.XXII |
| format | Artículo científico |
| id | redalyc_77666754004 |
| institution | Redalyc |
| language | en |
| publishDate | 2020 |
| publisher | Universidad Nacional de Colombia |
| spellingShingle | Antagonism of plant growth promoting rhizobacteria against the causal agent of the vascular wilting of tomato Narmer Fernando Galeano Vanegas Biología dual tests Chitinase activity endoglucanase activity inhibition of germination Antagonism of plant growth promoting rhizobacteria against the causal agent of the vascular wilting of tomato Narmer Fernando Galeano Vanegas Sandra María Marulanda Moreno Beatriz Elena Padilla Hurtado Javier Guillermo Mantilla Afanador Nelson Ceballos Aguirre Gloria María Restrepo Franco Biología dual tests Chitinase activity endoglucanase activity inhibition of germination Use of biotechnological potential of native microorganisms as bio-inputs is having a great impact on agricultural systems. Plant Growth Promoting Rhizobacteria (PGPR), in addition to their beneficial effect on plant growth and on the availability of soil elements, also have an antagonistic effect against different pathogens. In this study, growth promotion mechanisms with emphasis on the antagonism of PGPR isolated from sugarcane and tomato crops were evaluated. Antagonism against Fusarium oxysporum f.sp lycopersici (Fol) was determined by dual tests, inhibition of germination and production of chitinases and endoglucanases. 52 isolates were evaluated and according to their results in dual tests 10 were selected for further analysis. Isolate GIBI127 showed the best percentage of Inhibition Germination (IG) of Fol (59.29%). Then, a selection index was calculated using results from gi, dual tests and growth promotion mechanisms to select five best isolates. Finally, these bacteria were evaluated for chitinases and endoglucanases production using Miller's method. As a result, strain GIBI419 (Burkholderia cepacia) showed a higher production of these enzymes. Selected isolates have antagonistic potential along with plant growth promotion characteristics, which can be used for the development of microbial inoculants which allow the establishment of agricultural systems for tomato cultivation that are sustainable, efficient, and environmentally friendly. 2020 artículo científico 0123-3475 https://www.redalyc.org/articulo.oa?id=77666754004 https://www.redalyc.org/journal/776/77666754004/ https://www.redalyc.org/journal/776/77666754004/html/ https://www.redalyc.org/journal/776/77666754004/77666754004.epub https://www.redalyc.org/journal/776/77666754004/movil 10.15446/rev.colomb.biote.v22n2.79449 en http://www.redalyc.org/revista.oa?id=776 Revista Colombiana de Biotecnología application/pdf Universidad Nacional de Colombia Revista Colombiana de Biotecnología (Colombia) Num.2 Vol.XXII |
| title | Antagonism of plant growth promoting rhizobacteria against the causal agent of the vascular wilting of tomato |
| topic | Biología dual tests Chitinase activity endoglucanase activity inhibition of germination |
| url | https://www.redalyc.org/articulo.oa?id=77666754004 https://www.redalyc.org/journal/776/77666754004/ https://www.redalyc.org/journal/776/77666754004/html/ https://www.redalyc.org/journal/776/77666754004/77666754004.epub https://www.redalyc.org/journal/776/77666754004/movil |