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Biblioteca (s) : |
INIA Treinta y Tres. |
Fecha : |
15/01/2021 |
Actualizado : |
15/01/2021 |
Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
Autor : |
ABREO, E.; VALLE, D.; GONZÁLEZ, A.; ALTIER, N. |
Afiliación : |
EDUARDO RAUL ABREO GIMENEZ, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; DIANA VALLE LOPEZ, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; ANDRÉS GONZÁLEZ, Universidad de la República, Montevideo, Uruguay. Facultad de Química. Laboratorio de Ecología Química.; NORA ADRIANA ALTIER MANZINI, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay. |
Título : |
Control of damping-off in tomato seedlings exerted by Serratia spp. strains and identification of inhibitory bacterial volatiles in vitro. |
Fecha de publicación : |
2021 |
Fuente / Imprenta : |
Systematic and Applied Microbiology. April 2021, Volume 44, Issue 2, art. 126177. Doi: https://doi.org/10.1016/j.syapm.2020.126177 |
DOI : |
10.1016/j.syapm.2020.126177 |
Idioma : |
Inglés |
Notas : |
Article history: Received 19 October 2020 / Revised 23 December 2020 / Accepted 23 December 2020 / Available online 2 January 2021. |
Contenido : |
Serratia marcescens can be a plant growth promoting bacteria (PGPB) and an opportunistic human and plant pathogen. We have identified and characterized strains of related species of Serratia and evaluated their biological control of damping-off of tomato seeds caused by Pythium cryptoirregulare. Serratia ureilytica, S. bockelmannii and S. nevei were identified by phylogenetic analysis of partial gyrB gene sequence and average nucleotide identity (ANI). Tomato seeds inoculated with S. ureilytica ILBB 145 showed higher germination percentage and reduced damping-off in greenhouse experiment resembling a commercial operation, and volatiles produced by this strain caused the nearly complete inhibition in vitro of P. cryptoirregulare. Analysis of volatile organic compounds (VOCs) showed that ILBB 145 produced dimethyl disulfide (DMDS), which can partially account for this inhibition. Serratia bockelmannii ILBB 162 performance against damping-off was intermediate and the inhibition of P. cryptoirregulare in vitro was lower and explained by volatile and diffusible metabolites. Both strains augmented DMDS production in the presence of P. cryptoirregulare, suggesting this compound may play a role in the context of interspecific competition. Serratia nevei ILBB 219 showed the lowest inhibition of P. cryptoirregulare in vitro, no DMDS production, and no biocontrol in planta. Draft genomes of the three strains were annotated and individual genes and biosynthesis gene clusters were identified in relation with the observed phenotypes. We report S. ureilytica ? a low risk species- with activity as a biological control agent and DMDS produced by this bacterial species putatively involved in seed and seedling protection against P. cryptoirregulare. MenosSerratia marcescens can be a plant growth promoting bacteria (PGPB) and an opportunistic human and plant pathogen. We have identified and characterized strains of related species of Serratia and evaluated their biological control of damping-off of tomato seeds caused by Pythium cryptoirregulare. Serratia ureilytica, S. bockelmannii and S. nevei were identified by phylogenetic analysis of partial gyrB gene sequence and average nucleotide identity (ANI). Tomato seeds inoculated with S. ureilytica ILBB 145 showed higher germination percentage and reduced damping-off in greenhouse experiment resembling a commercial operation, and volatiles produced by this strain caused the nearly complete inhibition in vitro of P. cryptoirregulare. Analysis of volatile organic compounds (VOCs) showed that ILBB 145 produced dimethyl disulfide (DMDS), which can partially account for this inhibition. Serratia bockelmannii ILBB 162 performance against damping-off was intermediate and the inhibition of P. cryptoirregulare in vitro was lower and explained by volatile and diffusible metabolites. Both strains augmented DMDS production in the presence of P. cryptoirregulare, suggesting this compound may play a role in the context of interspecific competition. Serratia nevei ILBB 219 showed the lowest inhibition of P. cryptoirregulare in vitro, no DMDS production, and no biocontrol in planta. Draft genomes of the three strains were annotated and individual genes and biosynthesis gene clusters were identi... Presentar Todo |
Palabras claves : |
BGC; BIOCONTROL; INHIBIDORES; OOMYCETE; PLÁNTULAS; SERRAWETTINS; VOCs. |
Asunto categoría : |
-- |
Marc : |
LEADER 02728naa a2200265 a 4500 001 1061670 005 2021-01-15 008 2021 bl uuuu u00u1 u #d 024 7 $a10.1016/j.syapm.2020.126177$2DOI 100 1 $aABREO, E. 245 $aControl of damping-off in tomato seedlings exerted by Serratia spp. strains and identification of inhibitory bacterial volatiles in vitro.$h[electronic resource] 260 $c2021 500 $aArticle history: Received 19 October 2020 / Revised 23 December 2020 / Accepted 23 December 2020 / Available online 2 January 2021. 520 $aSerratia marcescens can be a plant growth promoting bacteria (PGPB) and an opportunistic human and plant pathogen. We have identified and characterized strains of related species of Serratia and evaluated their biological control of damping-off of tomato seeds caused by Pythium cryptoirregulare. Serratia ureilytica, S. bockelmannii and S. nevei were identified by phylogenetic analysis of partial gyrB gene sequence and average nucleotide identity (ANI). Tomato seeds inoculated with S. ureilytica ILBB 145 showed higher germination percentage and reduced damping-off in greenhouse experiment resembling a commercial operation, and volatiles produced by this strain caused the nearly complete inhibition in vitro of P. cryptoirregulare. Analysis of volatile organic compounds (VOCs) showed that ILBB 145 produced dimethyl disulfide (DMDS), which can partially account for this inhibition. Serratia bockelmannii ILBB 162 performance against damping-off was intermediate and the inhibition of P. cryptoirregulare in vitro was lower and explained by volatile and diffusible metabolites. Both strains augmented DMDS production in the presence of P. cryptoirregulare, suggesting this compound may play a role in the context of interspecific competition. Serratia nevei ILBB 219 showed the lowest inhibition of P. cryptoirregulare in vitro, no DMDS production, and no biocontrol in planta. Draft genomes of the three strains were annotated and individual genes and biosynthesis gene clusters were identified in relation with the observed phenotypes. We report S. ureilytica ? a low risk species- with activity as a biological control agent and DMDS produced by this bacterial species putatively involved in seed and seedling protection against P. cryptoirregulare. 653 $aBGC 653 $aBIOCONTROL 653 $aINHIBIDORES 653 $aOOMYCETE 653 $aPLÁNTULAS 653 $aSERRAWETTINS 653 $aVOCs 700 1 $aVALLE, D. 700 1 $aGONZÁLEZ, A. 700 1 $aALTIER, N. 773 $tSystematic and Applied Microbiology. April 2021, Volume 44, Issue 2, art. 126177. Doi: https://doi.org/10.1016/j.syapm.2020.126177
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| Acceso al texto completo restringido a Biblioteca INIA Treinta y Tres. Por información adicional contacte bibliott@inia.org.uy. |
Registro completo
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Biblioteca (s) : |
INIA Treinta y Tres. |
Fecha actual : |
28/03/2022 |
Actualizado : |
02/12/2022 |
Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
Circulación / Nivel : |
Internacional - -- |
Autor : |
DE ARMAS, S.; GALVÁN, G. A.; LAPAZ, M. I.; GONZÁLEZ-BARRIOS, P.; VICENTE, E.; PIANZZOLA, M. J.; SIRI, M. I. |
Afiliación : |
STEFANIE DE ARMAS, Área Microbiología, Departamento de Biociencias, Facultad de Química, UDELAR, Montevideo, UY.; Programa de Desarrollo de las Ciencias Básicas (PEDECIBA).; GUILLERMO A. GALVÁN, Departamento de Producción Vegetal, Centro Regional Sur (CRS), Facultad de Agronomía, UDELAR, Canelones, UY. Programa de Desarrollo de las Ciencias Básicas (PEDECIBA).; MARÍA I. LAPAZ, Área Microbiología, Departamento de Biociencias, Facultad de Química, UDELAR, Montevideo, uy. Programa de Desarrollo de las Ciencias Básicas (PEDECIBA).; PABLO GONZÁLEZ-BARRIOS, Departamento de Biometría, Estadística y Computación. Facultad de Agronomía, UDELAR, Montevideo, UY.; CARLOS ESTEBAN VICENTE CASTRO, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; MARIA J. PIANZZOLA, Área Microbiología, Departamento de Biociencias, Facultad de Química, UDELAR, Montevideo, UY. Programa de Desarrollo de las Ciencias Básicas (PEDECIBA).; MARÍA I. SIRI, Área Microbiología, Departamento de Biociencias, Facultad de Química, UDELAR, Montevideo, UY. Programa de Desarrollo de las Ciencias Básicas (PEDECIBA). |
Título : |
Phylogeny and identification of Pantoea species associated with bulb rot and bacterial leaf blight of onion crops in Uruguay. |
Fecha de publicación : |
2022 |
Fuente / Imprenta : |
Plant Disease, 2022, volume 106, issue 4, pp. 1216-1225. doi: https://doi.org/10.1094/PDIS-06-21-1140-RE |
DOI : |
10.1094/PDIS-06-21-1140-RE |
Idioma : |
Inglés |
Notas : |
Published Online:27 Mar 2022.
Corresponding author: María I. Siri; Email: msiri@fq.edu.uy. |
Contenido : |
Abstract
Onion is among the most consumed vegetables in Uruguay, grown in the northwestern and southern regions of the country. The onion supply presents interannual variations associated with significant postharvest losses, mainly caused by bacterial rots. Besides bulb rotting, onion leaf lesions as well as infections on seed-stalks during seed production may be devastating for some varieties under conducive conditions. This research aimed to identify the causal agents of bulb rots and leaf blight of onion crops in Uruguay. Symptomatic bulbs, seeds-stalks, and leaves were collected from commercial fields from 2015 to 2020. Bacterial colonies were isolated and identified at genera level using physiological tests and 16S rRNA gene sequence analysis. A collection of 59 Pantoea spp. isolates was obtained (11 from bulbs and 48 from leaves and seeds-stalks). Multilocus sequence analysis using four housekeeping genes (rpoB, gyrB, leuS, and fusA) allowed the assignment of the isolates to five Pantoea species: P. ananatis, P. agglomerans, P. allii, P. eucalypti, and P. vagans. The last two species were not previously reported as onion pathogens elsewhere. The ability to cause disease symptoms was tested by leaf inoculation and red onion scale assays. P. ananatis isolates showed the highest aggressiveness in both assays. Specific isolates from P. allii (MAI 6022), P. eucalypti (MAI 6036), P. vagans (MAI 6050), and Pantoea sp. (MAI 6049) ranked second in aggressiveness on onion leaves, whereas only three isolates belonging to P. eucalypti (MAI 6036 and MAI 6058) and P. agglomerans (MAI 6045) exhibited the same scale-clearing phenotype as P. ananatis. Leaf inoculation assays were also performed on a set of eight onion cultivars and breeding lines. Overall, P. ananatis MAI 6032 showed the highest aggressiveness in all tested cultivars, followed by P. eucalypti MAI 6036. The presence of new reported bacterial species leads to complex disease management and highlights the need for further studies on virulence factors and the epidemiology of these pathogens. MenosAbstract
Onion is among the most consumed vegetables in Uruguay, grown in the northwestern and southern regions of the country. The onion supply presents interannual variations associated with significant postharvest losses, mainly caused by bacterial rots. Besides bulb rotting, onion leaf lesions as well as infections on seed-stalks during seed production may be devastating for some varieties under conducive conditions. This research aimed to identify the causal agents of bulb rots and leaf blight of onion crops in Uruguay. Symptomatic bulbs, seeds-stalks, and leaves were collected from commercial fields from 2015 to 2020. Bacterial colonies were isolated and identified at genera level using physiological tests and 16S rRNA gene sequence analysis. A collection of 59 Pantoea spp. isolates was obtained (11 from bulbs and 48 from leaves and seeds-stalks). Multilocus sequence analysis using four housekeeping genes (rpoB, gyrB, leuS, and fusA) allowed the assignment of the isolates to five Pantoea species: P. ananatis, P. agglomerans, P. allii, P. eucalypti, and P. vagans. The last two species were not previously reported as onion pathogens elsewhere. The ability to cause disease symptoms was tested by leaf inoculation and red onion scale assays. P. ananatis isolates showed the highest aggressiveness in both assays. Specific isolates from P. allii (MAI 6022), P. eucalypti (MAI 6036), P. vagans (MAI 6050), and Pantoea sp. (MAI 6049) ranked second in aggressiveness on onion leaves... Presentar Todo |
Palabras claves : |
ALLIUM CEPA; CENTER ROT; PANTOEA SPP; PATHOGEN DIVERSITY. |
Asunto categoría : |
-- |
Marc : |
LEADER 03015naa a2200265 a 4500 001 1062926 005 2022-12-02 008 2022 bl uuuu u00u1 u #d 024 7 $a10.1094/PDIS-06-21-1140-RE$2DOI 100 1 $aDE ARMAS, S. 245 $aPhylogeny and identification of Pantoea species associated with bulb rot and bacterial leaf blight of onion crops in Uruguay.$h[electronic resource] 260 $c2022 500 $aPublished Online:27 Mar 2022. Corresponding author: María I. Siri; Email: msiri@fq.edu.uy. 520 $aAbstract Onion is among the most consumed vegetables in Uruguay, grown in the northwestern and southern regions of the country. The onion supply presents interannual variations associated with significant postharvest losses, mainly caused by bacterial rots. Besides bulb rotting, onion leaf lesions as well as infections on seed-stalks during seed production may be devastating for some varieties under conducive conditions. This research aimed to identify the causal agents of bulb rots and leaf blight of onion crops in Uruguay. Symptomatic bulbs, seeds-stalks, and leaves were collected from commercial fields from 2015 to 2020. Bacterial colonies were isolated and identified at genera level using physiological tests and 16S rRNA gene sequence analysis. A collection of 59 Pantoea spp. isolates was obtained (11 from bulbs and 48 from leaves and seeds-stalks). Multilocus sequence analysis using four housekeeping genes (rpoB, gyrB, leuS, and fusA) allowed the assignment of the isolates to five Pantoea species: P. ananatis, P. agglomerans, P. allii, P. eucalypti, and P. vagans. The last two species were not previously reported as onion pathogens elsewhere. The ability to cause disease symptoms was tested by leaf inoculation and red onion scale assays. P. ananatis isolates showed the highest aggressiveness in both assays. Specific isolates from P. allii (MAI 6022), P. eucalypti (MAI 6036), P. vagans (MAI 6050), and Pantoea sp. (MAI 6049) ranked second in aggressiveness on onion leaves, whereas only three isolates belonging to P. eucalypti (MAI 6036 and MAI 6058) and P. agglomerans (MAI 6045) exhibited the same scale-clearing phenotype as P. ananatis. Leaf inoculation assays were also performed on a set of eight onion cultivars and breeding lines. Overall, P. ananatis MAI 6032 showed the highest aggressiveness in all tested cultivars, followed by P. eucalypti MAI 6036. The presence of new reported bacterial species leads to complex disease management and highlights the need for further studies on virulence factors and the epidemiology of these pathogens. 653 $aALLIUM CEPA 653 $aCENTER ROT 653 $aPANTOEA SPP 653 $aPATHOGEN DIVERSITY 700 1 $aGALVÁN, G. A. 700 1 $aLAPAZ, M. I. 700 1 $aGONZÁLEZ-BARRIOS, P. 700 1 $aVICENTE, E. 700 1 $aPIANZZOLA, M. J. 700 1 $aSIRI, M. I. 773 $tPlant Disease, 2022, volume 106, issue 4, pp. 1216-1225. doi: https://doi.org/10.1094/PDIS-06-21-1140-RE
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