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 | Acceso al texto completo restringido a Biblioteca INIA Las Brujas. Por información adicional contacte bibliolb@inia.org.uy. |
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Biblioteca (s) : |
INIA Las Brujas. |
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Fecha : |
21/02/2014 |
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Actualizado : |
15/10/2019 |
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Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
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Autor : |
GENTILE, R.M.; MARTINO, D.; ENTZ, M.H. |
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Afiliación : |
R. M. GENTILE, Department of Plant Science, University of Manitoba, Canada; DANIEL LUIS MARTINO SCANDROGLIO, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; M. H. ENTZ, Department of Plant Science, University of Manitoba, Canada. |
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Título : |
Influence of perennial forages on subsoil organic carbon in a long-term rotation study in Uruguay. Short communication. |
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Fecha de publicación : |
2005 |
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Fuente / Imprenta : |
Agriculture, Ecosystems and Environment, January 2005, Volume 105, Issue 1-2, Pages 419-423. |
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ISSN : |
0167-8809 |
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DOI : |
10.1016/j.agee.2004.05.002 |
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Idioma : |
Inglés |
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Notas : |
Article history: Received 30 October 2003 / Received in revised form 26 April 2004 / Accepted 10 May 2004. |
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Contenido : |
ABSTRACT.
Interest is increasing in Uruguay in management practices that can store carbon in soils, such as the use of perennial forage crops. Previous studies on agricultural soils have focused on organic carbon in surface soil layers. However, due to the ability of perennial forages to develop extensive root systems, the potential exists for these crops to add carbon in the subsoil. A 38-year rotation experiment on a silty clay loam soil in southwestern Uruguay was used to examine the effect of a crop rotation including periods of pasture on total organic carbon (TOC) and particulate (>53 μm) organic carbon (POC) at soil depths of 20-40 and 40-60 cm. Analysis showed the pasture rotation had higher POC concentrations at both depths than an annual crop rotation. This may indicate increased addition of organic carbon in the pasture rotation and signal a future change in TOC and mineral-associated organic carbon levels. Total organic carbon was higher in the rotation including pasture at a P level of 0.14. These results present preliminary observations on the management effects of including perennial forages in rotations on subsoil carbon levels, using a long-term experiment resource to assess very slow changes.
© 2004 Elsevier B.V. All rights reserved. |
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Palabras claves : |
Forage crops; Soil organic carbon; Subsoil. |
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Thesagro : |
URUGUAY. |
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Asunto categoría : |
-- |
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Marc : |
LEADER 02101naa a2200229 a 4500
001 1012809
005 2019-10-15
008 2005 bl uuuu u00u1 u #d
022 $a0167-8809
024 7 $a10.1016/j.agee.2004.05.002$2DOI
100 1 $aGENTILE, R.M.
245 $aInfluence of perennial forages on subsoil organic carbon in a long-term rotation study in Uruguay. Short communication.$h[electronic resource]
260 $c2005
500 $aArticle history: Received 30 October 2003 / Received in revised form 26 April 2004 / Accepted 10 May 2004.
520 $aABSTRACT. Interest is increasing in Uruguay in management practices that can store carbon in soils, such as the use of perennial forage crops. Previous studies on agricultural soils have focused on organic carbon in surface soil layers. However, due to the ability of perennial forages to develop extensive root systems, the potential exists for these crops to add carbon in the subsoil. A 38-year rotation experiment on a silty clay loam soil in southwestern Uruguay was used to examine the effect of a crop rotation including periods of pasture on total organic carbon (TOC) and particulate (>53 μm) organic carbon (POC) at soil depths of 20-40 and 40-60 cm. Analysis showed the pasture rotation had higher POC concentrations at both depths than an annual crop rotation. This may indicate increased addition of organic carbon in the pasture rotation and signal a future change in TOC and mineral-associated organic carbon levels. Total organic carbon was higher in the rotation including pasture at a P level of 0.14. These results present preliminary observations on the management effects of including perennial forages in rotations on subsoil carbon levels, using a long-term experiment resource to assess very slow changes. © 2004 Elsevier B.V. All rights reserved.
650 $aURUGUAY
653 $aForage crops
653 $aSoil organic carbon
653 $aSubsoil
700 1 $aMARTINO, D.
700 1 $aENTZ, M.H.
773 $tAgriculture, Ecosystems and Environment, January 2005, Volume 105, Issue 1-2, Pages 419-423.
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| Acceso al texto completo restringido a Biblioteca INIA Las Brujas. Por información adicional contacte bibliolb@inia.org.uy. |
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Registro completo
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Biblioteca (s) : |
INIA Las Brujas. |
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Fecha actual : |
21/02/2014 |
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Actualizado : |
17/10/2019 |
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Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
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Circulación / Nivel : |
Internacional - -- |
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Autor : |
FERREIRA, V.; PIANZZOLA, M.J.; VILARÓ, F.; GALVÁN, G.; TONDO, M.L.; RODRÍGUEZ, M.V.; ORELLANO, E.G.; VALSS, M.; SIRI, M.I. |
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Afiliación : |
VIRGINIA FERREIRA, Departamento de Biociencias, Facultad de Química, Universidad de la República, Montevideo, Uruguay; MARÍA J. PIANZZOLA, Departamento de Biociencias, Facultad de Química, Universidad de la República, Montevideo, Uruguay; FRANCISCO LUIS VILARO PAREJA, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; GUILLERMO GALVÁN, Departamento de Producción Vegetal, Centro Regional Sur, Facultad de Agronomía, Universidad de la República, Canelones, Uruguay; MARÍA L. TONDO, Instituto de Biología Molecular y Celular de Rosario (CONICET-UNR), Rosario, Argentina; Área Biología Molecular, Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Rosario, Argentina; MARÍA V. RODRÍGUEZ, Área Biología Vegetal (CONICET), Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Rosario, Argentina; ELENA G. ORELLANO, Instituto de Biología Molecular y Celular de Rosario (CONICET-UNR), Rosario, Argentina; Área Biología Molecular, Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Rosario, Argentina; MARC VALSS, Center for Research in Agricultural Genomics, CSIC, IRTA, Barcelona, Spain; Department of Genetics, Universitat de Barcelona, Barcelona, Spain; MARÍA I. SIRI, Departamento de Biociencias, Facultad de Química, Universidad de la República, Montevideo, Uruguay. |
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Título : |
Interspecific potato breeding lines display differential colonization patterns and induced defense responses after Ralstonia solanacearum infection. |
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Fecha de publicación : |
2017 |
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Fuente / Imprenta : |
Frontiers in Plant Science, 28 August 2017, volume 8, 1424. OPEN ACCESS. |
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ISSN : |
1664-462X |
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DOI : |
10.3389/fpls.2017.01424 |
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Idioma : |
Inglés |
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Notas : |
Article history: Received: 30 June 2017 / Accepted: 02 August 2017 / Published: 28 August 2017. |
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Contenido : |
ABSTRACT.
Potato (Solanum tuberosum L.) is one of the main hosts of Ralstonia solanacearum, the causative agent of bacterial wilt. This plant pathogen bacteria produce asymptomatic latent infections that promote its global spread, hindering disease control. A potato breeding program is conducted in Uruguay based on the introgression of resistance from the wild native species S. commersonii Dun. Currently, several backcrosses were generated exploiting the high genetic variability of this wild species resulting in advanced interspecific breeding lines with different levels of bacterial wilt resistance. The overall aim of this work was to characterize the interaction of the improved potato germplasm with R. solanacearum. Potato clones with different responses to R. solanacearum were selected, and colonization, dissemination and multiplication patterns after infection were evaluated. A R. solanacearum strain belonging to the phylotype IIB-sequevar 1, with high aggressiveness on potato was genetically modified to constitutively generate fluorescence and luminescence from either the green fluorescence protein gene or lux operon. These reporter strains were used to allow a direct and precise visualization of fluorescent and luminescent cells in plant tissues by confocal microscopy and luminometry. Based on wilting scoring and detection of latent infections, the selected clones were classified as susceptible or tolerant, while no immune-like resistance response was identified. Typical wilting symptoms in susceptible plants were correlated with high concentrations of bacteria in roots and along the stems. Tolerant clones showed a colonization pattern restricted to roots and a limited number of xylem vessels only in the stem base. Results indicate that resistance in potato is achieved through restriction of bacterial invasion and multiplication inside plant tissues, particularly in stems. Tolerant plants were also characterized by induction of anatomical and biochemical changes after R. solanacearum infection, including hyperplasic activity of conductor tissue, tylose production, callose and lignin deposition, and accumulation of reactive oxygen species. This study highlights the potential of the identified tolerant interspecific potato clones as valuable genetic resources for potato-breeding programs and leads to a better understanding of resistance against R. solanacearum in potato.
© 2017 Ferreira, Pianzzola, Vilaró, Galván, Tondo, Rodriguez, Orellano, Valls and Siri. MenosABSTRACT.
Potato (Solanum tuberosum L.) is one of the main hosts of Ralstonia solanacearum, the causative agent of bacterial wilt. This plant pathogen bacteria produce asymptomatic latent infections that promote its global spread, hindering disease control. A potato breeding program is conducted in Uruguay based on the introgression of resistance from the wild native species S. commersonii Dun. Currently, several backcrosses were generated exploiting the high genetic variability of this wild species resulting in advanced interspecific breeding lines with different levels of bacterial wilt resistance. The overall aim of this work was to characterize the interaction of the improved potato germplasm with R. solanacearum. Potato clones with different responses to R. solanacearum were selected, and colonization, dissemination and multiplication patterns after infection were evaluated. A R. solanacearum strain belonging to the phylotype IIB-sequevar 1, with high aggressiveness on potato was genetically modified to constitutively generate fluorescence and luminescence from either the green fluorescence protein gene or lux operon. These reporter strains were used to allow a direct and precise visualization of fluorescent and luminescent cells in plant tissues by confocal microscopy and luminometry. Based on wilting scoring and detection of latent infections, the selected clones were classified as susceptible or tolerant, while no immune-like resistance response was identified. Typic... Presentar Todo |
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Palabras claves : |
Bacterial wilt; Disease resistance; Latent infections; Plant breeding; Potato; Ralstonia solanacearum; Solanum commersonii. |
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Asunto categoría : |
F01 Cultivo |
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Marc : |
LEADER 03620naa a2200337 a 4500
001 1012685
005 2019-10-17
008 2017 bl uuuu u00u1 u #d
022 $a1664-462X
024 7 $a10.3389/fpls.2017.01424$2DOI
100 1 $aFERREIRA, V.
245 $aInterspecific potato breeding lines display differential colonization patterns and induced defense responses after Ralstonia solanacearum infection.$h[electronic resource]
260 $c2017
500 $aArticle history: Received: 30 June 2017 / Accepted: 02 August 2017 / Published: 28 August 2017.
520 $aABSTRACT. Potato (Solanum tuberosum L.) is one of the main hosts of Ralstonia solanacearum, the causative agent of bacterial wilt. This plant pathogen bacteria produce asymptomatic latent infections that promote its global spread, hindering disease control. A potato breeding program is conducted in Uruguay based on the introgression of resistance from the wild native species S. commersonii Dun. Currently, several backcrosses were generated exploiting the high genetic variability of this wild species resulting in advanced interspecific breeding lines with different levels of bacterial wilt resistance. The overall aim of this work was to characterize the interaction of the improved potato germplasm with R. solanacearum. Potato clones with different responses to R. solanacearum were selected, and colonization, dissemination and multiplication patterns after infection were evaluated. A R. solanacearum strain belonging to the phylotype IIB-sequevar 1, with high aggressiveness on potato was genetically modified to constitutively generate fluorescence and luminescence from either the green fluorescence protein gene or lux operon. These reporter strains were used to allow a direct and precise visualization of fluorescent and luminescent cells in plant tissues by confocal microscopy and luminometry. Based on wilting scoring and detection of latent infections, the selected clones were classified as susceptible or tolerant, while no immune-like resistance response was identified. Typical wilting symptoms in susceptible plants were correlated with high concentrations of bacteria in roots and along the stems. Tolerant clones showed a colonization pattern restricted to roots and a limited number of xylem vessels only in the stem base. Results indicate that resistance in potato is achieved through restriction of bacterial invasion and multiplication inside plant tissues, particularly in stems. Tolerant plants were also characterized by induction of anatomical and biochemical changes after R. solanacearum infection, including hyperplasic activity of conductor tissue, tylose production, callose and lignin deposition, and accumulation of reactive oxygen species. This study highlights the potential of the identified tolerant interspecific potato clones as valuable genetic resources for potato-breeding programs and leads to a better understanding of resistance against R. solanacearum in potato. © 2017 Ferreira, Pianzzola, Vilaró, Galván, Tondo, Rodriguez, Orellano, Valls and Siri.
653 $aBacterial wilt
653 $aDisease resistance
653 $aLatent infections
653 $aPlant breeding
653 $aPotato
653 $aRalstonia solanacearum
653 $aSolanum commersonii
700 1 $aPIANZZOLA, M.J.
700 1 $aVILARÓ, F.
700 1 $aGALVÁN, G.
700 1 $aTONDO, M.L.
700 1 $aRODRÍGUEZ, M.V.
700 1 $aORELLANO, E.G.
700 1 $aVALSS, M.
700 1 $aSIRI, M.I.
773 $tFrontiers in Plant Science, 28 August 2017, volume 8, 1424. OPEN ACCESS.
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