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Biblioteca (s) : |
INIA Las Brujas. |
Fecha : |
10/09/2014 |
Actualizado : |
25/11/2019 |
Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
Autor : |
VAZ, P.; BAKKER, M.G.; SALOMON, C.E.; KINKEL, L.L. |
Afiliación : |
PATRICIA VAZ JAURI, Instituto Nacional de Investigación Agropecuaria (INIA), Uruguay. |
Título : |
Subinhibitory antibiotic concentrations mediate nutrient use and competition among soil Streptomyces. |
Fecha de publicación : |
2013 |
Fuente / Imprenta : |
PLoS ONE, 2013, v.8, no.12, e81064. OPEN ACCESS. |
ISSN : |
1932-6203 |
DOI : |
10.1371/journal.pone.0081064 |
Idioma : |
Inglés |
Contenido : |
ABSTRACT.
Though traditionally perceived as weapons, antibiotics are also hypothesized to act as microbial signals in natural habitats. However, while subinhibitory concentrations of antibiotics (SICA) are known to shift bacterial gene expression, specific hypotheses as to how SICA influence the ecology of natural populations are scarce. We explored whether antibiotic ?signals?, or SICA, have the potential to alter nutrient utilization, niche overlap, and competitive species interactions among Streptomyces populations in soil. For nine diverse Streptomyces isolates, we evaluated nutrient utilization patterns on 95
different nutrient sources in the presence and absence of subinhibitory concentrations of five antibiotics. There were significant changes in nutrient use among Streptomyces isolates, including both increases and decreases in the capacity to use individual nutrients in the presence vs. in the absence of SICA. Isolates varied in their responses to SICA and antibiotics varied in their effects on isolates. Furthermore, for some isolate-isolate-antibiotic combinations, competition-free growth (growth for an isolate on all nutrients that were not utilized by a competing isolate), was increased in the presence of SICA, reducing the potential fitness cost of nutrient competition among those competitors. This suggests that antibiotics may provide a mechanism for bacteria to actively minimize niche overlap among competitors in soil. Thus, in contrast to antagonistic coevolutionary dynamics, antibiotics as signals may mediate coevolutionary displacement among coexisting Streptomyces, thereby hindering the emergence of antibiotic resistant phenotypes. These results contribute to our broadunderstanding of the ecology and evolutionary biology of antibiotics and microbial signals in nature.
© 2013 Vaz Jauri et al. MenosABSTRACT.
Though traditionally perceived as weapons, antibiotics are also hypothesized to act as microbial signals in natural habitats. However, while subinhibitory concentrations of antibiotics (SICA) are known to shift bacterial gene expression, specific hypotheses as to how SICA influence the ecology of natural populations are scarce. We explored whether antibiotic ?signals?, or SICA, have the potential to alter nutrient utilization, niche overlap, and competitive species interactions among Streptomyces populations in soil. For nine diverse Streptomyces isolates, we evaluated nutrient utilization patterns on 95
different nutrient sources in the presence and absence of subinhibitory concentrations of five antibiotics. There were significant changes in nutrient use among Streptomyces isolates, including both increases and decreases in the capacity to use individual nutrients in the presence vs. in the absence of SICA. Isolates varied in their responses to SICA and antibiotics varied in their effects on isolates. Furthermore, for some isolate-isolate-antibiotic combinations, competition-free growth (growth for an isolate on all nutrients that were not utilized by a competing isolate), was increased in the presence of SICA, reducing the potential fitness cost of nutrient competition among those competitors. This suggests that antibiotics may provide a mechanism for bacteria to actively minimize niche overlap among competitors in soil. Thus, in contrast to antagonistic coevol... Presentar Todo |
Thesagro : |
MICROORGANISMOS DEL SUELO. |
Asunto categoría : |
P30 Ciencia del suelo y manejo del suelo |
URL : |
http://www.ainfo.inia.uy/digital/bitstream/item/3075/1/Vaz-Jauri-P.-2013-PLOS-ONE-v.812-e81064.pdf
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Marc : |
LEADER 02440naa a2200193 a 4500 001 1050130 005 2019-11-25 008 2013 bl uuuu u00u1 u #d 022 $a1932-6203 024 7 $a10.1371/journal.pone.0081064$2DOI 100 1 $aVAZ, P. 245 $aSubinhibitory antibiotic concentrations mediate nutrient use and competition among soil Streptomyces.$h[electronic resource] 260 $c2013 520 $aABSTRACT. Though traditionally perceived as weapons, antibiotics are also hypothesized to act as microbial signals in natural habitats. However, while subinhibitory concentrations of antibiotics (SICA) are known to shift bacterial gene expression, specific hypotheses as to how SICA influence the ecology of natural populations are scarce. We explored whether antibiotic ?signals?, or SICA, have the potential to alter nutrient utilization, niche overlap, and competitive species interactions among Streptomyces populations in soil. For nine diverse Streptomyces isolates, we evaluated nutrient utilization patterns on 95 different nutrient sources in the presence and absence of subinhibitory concentrations of five antibiotics. There were significant changes in nutrient use among Streptomyces isolates, including both increases and decreases in the capacity to use individual nutrients in the presence vs. in the absence of SICA. Isolates varied in their responses to SICA and antibiotics varied in their effects on isolates. Furthermore, for some isolate-isolate-antibiotic combinations, competition-free growth (growth for an isolate on all nutrients that were not utilized by a competing isolate), was increased in the presence of SICA, reducing the potential fitness cost of nutrient competition among those competitors. This suggests that antibiotics may provide a mechanism for bacteria to actively minimize niche overlap among competitors in soil. Thus, in contrast to antagonistic coevolutionary dynamics, antibiotics as signals may mediate coevolutionary displacement among coexisting Streptomyces, thereby hindering the emergence of antibiotic resistant phenotypes. These results contribute to our broadunderstanding of the ecology and evolutionary biology of antibiotics and microbial signals in nature. © 2013 Vaz Jauri et al. 650 $aMICROORGANISMOS DEL SUELO 700 1 $aBAKKER, M.G. 700 1 $aSALOMON, C.E. 700 1 $aKINKEL, L.L. 773 $tPLoS ONE, 2013$gv.8, no.12, e81064. OPEN ACCESS.
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Registro original : |
INIA Las Brujas (LB) |
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Registro completo
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Biblioteca (s) : |
INIA Treinta y Tres. |
Fecha actual : |
11/08/2017 |
Actualizado : |
08/12/2022 |
Tipo de producción científica : |
Libros |
Autor : |
SOCIEDAD DE FOMENTO RURAL RUTA 109; RIVAS, M.; RODRÍGUEZ LEZICA, L.; CARDOZO, G.; QUIÑONES, A. |
Afiliación : |
MERCEDES RIVAS, Centro Universitario Regional del Este (UDELAR); LORENA RODRÍGUEZ LEZICA, Sociedad de Fomento Rural Ruta 109; GERONIMO AGUSTIN CARDOZO CABANELAS, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; AMPARO QUIÑONES DELLEPIANE, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay. |
Título : |
Generando alternativas sustentables para la ganadería familiar de las Sierras del Este: una experiencia participativa. |
Fecha de publicación : |
2017 |
Fuente / Imprenta : |
Montevideo, (Uruguay): SFRR109, INIA, CURE, UDELAR, 2017. |
Páginas : |
32 p. |
Idioma : |
Español |
Notas : |
Productores participantes: Wilfredo Brañas, Clorindo de Castro, Sonia Fernández, Gerardo Mora, Mario Mora, Alicia Rodríguez, Eduardo Rodríguez, Lorena Rodríguez. |
Palabras claves : |
GANADERÍA FAMILIAR; SISTEMAS GANADEROS FAMILIARES. |
Thesagro : |
BROMUS AULETICUS; CAMPO NATURAL; CONTROL DE MALEZAS; DESARROLLO RURAL; PRODUCCION FAMILIAR; SISTEMAS GANADEROS. |
Asunto categoría : |
A50 Investigación agraria |
URL : |
http://www.ainfo.inia.uy/digital/bitstream/item/7173/1/Tecnologias-SFRRuta109.pdf
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Marc : |
LEADER 01017nam a2200265 a 4500 001 1057465 005 2022-12-08 008 2017 bl uuuu u00u1 u #d 100 1 $aSOCIEDAD DE FOMENTO RURAL RUTA 109 245 $aGenerando alternativas sustentables para la ganadería familiar de las Sierras del Este$buna experiencia participativa.$h[electronic resource] 260 $aMontevideo, (Uruguay): SFRR109, INIA, CURE, UDELAR$c2017 300 $a32 p. 500 $aProductores participantes: Wilfredo Brañas, Clorindo de Castro, Sonia Fernández, Gerardo Mora, Mario Mora, Alicia Rodríguez, Eduardo Rodríguez, Lorena Rodríguez. 650 $aBROMUS AULETICUS 650 $aCAMPO NATURAL 650 $aCONTROL DE MALEZAS 650 $aDESARROLLO RURAL 650 $aPRODUCCION FAMILIAR 650 $aSISTEMAS GANADEROS 653 $aGANADERÍA FAMILIAR 653 $aSISTEMAS GANADEROS FAMILIARES 700 1 $aRIVAS, M. 700 1 $aRODRÍGUEZ LEZICA, L. 700 1 $aCARDOZO, G. 700 1 $aQUIÑONES, A.
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