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Biblioteca (s) : |
INIA Treinta y Tres. |
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Fecha : |
29/01/2019 |
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Actualizado : |
11/10/2019 |
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Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
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Autor : |
TONN, B.; PORATH, I.; LATTANZI, F.; ISSELSTEIN, J. |
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Afiliación : |
BETTINA TONN, Department of Crop Sciences, Grassland Science, University of Goettingen, Goettingen, Germany; INA PORATH, Department of Crop Sciences, Grassland Science, University of Goettingen, Goettingen, Germany; FERNANDO A. LATTANZI, Lehrstuhl für Grünlandlehre, Technische Universität München, Freising-Weihenstephan, Germany. INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; JOHANNES ISSELSTEIN, Department of Crop Sciences, Grassland Science, University of Goettingen, Goettingen, Germany. Centre for biodiversity and Sustainable Land Use, Goettingen, Goeettingen, Germany. |
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Título : |
Urine effects on grass and legume nitrogen isotopic composition: Pronounced short-term dynamics of ?15 N. (Research article). |
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Fecha de publicación : |
2019 |
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Fuente / Imprenta : |
PLoS ONE, January 2019, Volume 14, Issue 1, Article number e0210623. OPEN ACCESS. |
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Páginas : |
15 p. |
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ISSN : |
1932-6203 |
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DOI : |
10.1371/journal.pone.0210623 |
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Idioma : |
Inglés |
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Notas : |
History Article: Received: June 14, 2017; Accepted: December 29, 2018; Published: January 16, 2019. |
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Contenido : |
Nitrogen stable isotope (15N) natural abundance is widely used to study nitrogen cycling. In grazed ecosystems, urine patches are hot-spots of nitrogen inputs, losses, and changes in ?15N. Understanding ?15N dynamics in urine-affected vegetation is therefore crucial for accurate inferences from 15N natural abundance in grasslands. We hypothesized that leaf ?15N following urine deposition varies with time and plant functional group. Specifically, we expected (i) short-term decreases in ?15N due to foliar absorption of 15N-depleted volatilized ammonia, (ii) followed by increases in ?15N due to uptake of 15N-enriched soil inorganic nitrogen, and (iii) that the magnitude of these changes is less in legumes than in grasses. The latter should be expected because ammonia absorption depends on leaf nitrogen concentration, which is higher in legumes than grasses, and because biological nitrogen fixation will modify the influence of urine-derived nitrogen on ?15N in legumes. We applied cattle urine to a mixture of Lolium perenne and Trifolium repens in a pot experiment. Nitrogen concentration and ?15N were determined for successive leaf cohorts and bulk biomass either 17 (early) or 32 (late) days after urine application. Early after urine application, leaves of L. perenne were 15N-depleted compared to control plants (?15N 0.1 vs. 5.8?, respectively), but leaves of T. repens were not (-1.1 vs. -1.1?, respectively). Later, both species increased their ?15N, but T. repens (4.5?) less so than L. perenne (5.9?). Vegetation sampled within and outside urine patches in the field further supported these results. Our findings confirm that foliar ammonia uptake can substantially decrease grass foliar ?15N, and that in both grass and legume the direction of the ?15N response to urine changes over time. Temporal dynamics of plant ?15N at urine patches therefore need to be explicitly addressed when 15N natural abundance is used to study nitrogen cycling in grazed grasslands. MenosNitrogen stable isotope (15N) natural abundance is widely used to study nitrogen cycling. In grazed ecosystems, urine patches are hot-spots of nitrogen inputs, losses, and changes in ?15N. Understanding ?15N dynamics in urine-affected vegetation is therefore crucial for accurate inferences from 15N natural abundance in grasslands. We hypothesized that leaf ?15N following urine deposition varies with time and plant functional group. Specifically, we expected (i) short-term decreases in ?15N due to foliar absorption of 15N-depleted volatilized ammonia, (ii) followed by increases in ?15N due to uptake of 15N-enriched soil inorganic nitrogen, and (iii) that the magnitude of these changes is less in legumes than in grasses. The latter should be expected because ammonia absorption depends on leaf nitrogen concentration, which is higher in legumes than grasses, and because biological nitrogen fixation will modify the influence of urine-derived nitrogen on ?15N in legumes. We applied cattle urine to a mixture of Lolium perenne and Trifolium repens in a pot experiment. Nitrogen concentration and ?15N were determined for successive leaf cohorts and bulk biomass either 17 (early) or 32 (late) days after urine application. Early after urine application, leaves of L. perenne were 15N-depleted compared to control plants (?15N 0.1 vs. 5.8?, respectively), but leaves of T. repens were not (-1.1 vs. -1.1?, respectively). Later, both species increased their ?15N, but T. repens (4.5?) less so ... Presentar Todo |
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Palabras claves : |
CAPTACIÓN DE AMONÍACO FOLIAR; DINÁMICA DEL NITRÓGENO; ECOSISTEMAS PASTORILES; FOLIAR AMMONIA; GRAZED ECOSYSTEMS; NITROGEN CYCLE; ORINA BOVINA. |
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Thesagro : |
CICLO DEL NITROGENO; LOLIUM PERENNE; ORINA; TRIFOLIUM REPENS. |
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Asunto categoría : |
-- |
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URL : |
http://www.ainfo.inia.uy/digital/bitstream/item/12355/1/Latanzi-Plos-One-2019-1.pdf
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Marc : |
LEADER 03108naa a2200337 a 4500
001 1059457
005 2019-10-11
008 2019 bl uuuu u00u1 u #d
022 $a1932-6203
024 7 $a10.1371/journal.pone.0210623$2DOI
100 1 $aTONN, B.
245 $aUrine effects on grass and legume nitrogen isotopic composition$bPronounced short-term dynamics of ?15 N. (Research article).$h[electronic resource]
260 $c2019
300 $a15 p.
500 $aHistory Article: Received: June 14, 2017; Accepted: December 29, 2018; Published: January 16, 2019.
520 $aNitrogen stable isotope (15N) natural abundance is widely used to study nitrogen cycling. In grazed ecosystems, urine patches are hot-spots of nitrogen inputs, losses, and changes in ?15N. Understanding ?15N dynamics in urine-affected vegetation is therefore crucial for accurate inferences from 15N natural abundance in grasslands. We hypothesized that leaf ?15N following urine deposition varies with time and plant functional group. Specifically, we expected (i) short-term decreases in ?15N due to foliar absorption of 15N-depleted volatilized ammonia, (ii) followed by increases in ?15N due to uptake of 15N-enriched soil inorganic nitrogen, and (iii) that the magnitude of these changes is less in legumes than in grasses. The latter should be expected because ammonia absorption depends on leaf nitrogen concentration, which is higher in legumes than grasses, and because biological nitrogen fixation will modify the influence of urine-derived nitrogen on ?15N in legumes. We applied cattle urine to a mixture of Lolium perenne and Trifolium repens in a pot experiment. Nitrogen concentration and ?15N were determined for successive leaf cohorts and bulk biomass either 17 (early) or 32 (late) days after urine application. Early after urine application, leaves of L. perenne were 15N-depleted compared to control plants (?15N 0.1 vs. 5.8?, respectively), but leaves of T. repens were not (-1.1 vs. -1.1?, respectively). Later, both species increased their ?15N, but T. repens (4.5?) less so than L. perenne (5.9?). Vegetation sampled within and outside urine patches in the field further supported these results. Our findings confirm that foliar ammonia uptake can substantially decrease grass foliar ?15N, and that in both grass and legume the direction of the ?15N response to urine changes over time. Temporal dynamics of plant ?15N at urine patches therefore need to be explicitly addressed when 15N natural abundance is used to study nitrogen cycling in grazed grasslands.
650 $aCICLO DEL NITROGENO
650 $aLOLIUM PERENNE
650 $aORINA
650 $aTRIFOLIUM REPENS
653 $aCAPTACIÓN DE AMONÍACO FOLIAR
653 $aDINÁMICA DEL NITRÓGENO
653 $aECOSISTEMAS PASTORILES
653 $aFOLIAR AMMONIA
653 $aGRAZED ECOSYSTEMS
653 $aNITROGEN CYCLE
653 $aORINA BOVINA
700 1 $aPORATH, I.
700 1 $aLATTANZI, F.
700 1 $aISSELSTEIN, J.
773 $tPLoS ONE, January 2019, Volume 14, Issue 1, Article number e0210623. OPEN ACCESS.
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INIA Treinta y Tres (TT) |
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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 : |
30/06/2021 |
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Actualizado : |
30/06/2021 |
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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 : |
ANDINO, M.; GAIERO, P.; GONZÁLEZ-BARRIOS, P.; GALVÁN, G.; VILARÓ, F.; SPERANZA, P. |
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Afiliación : |
MARIANA ANDINO, Facultad de Agronomía, Universidad de la República, Montevideo, Uruguay.; PAOLA GAIERO, Facultad de Agronomía, Universidad de la República, Montevideo, Uruguay.; PABLO GONZÁLEZ-BARRIOS, Facultad de Agronomía, Universidad de la República, Montevideo, Uruguay.; GUILLERMO GALVÁN, Facultad de Agronomía, Universidad de la República, Montevideo, Uruguay.; FRANCISCO LUIS VILARO PAREJA, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; Facultad de Agronomía, Universidad de la República, Montevideo, Uruguay.; PABLO SPERANZA, Facultad de Agronomía, Universidad de la República, Montevideo, Uruguay. |
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Título : |
Potato introgressive hybridisation breeding for bacterial wilt resistance using Solanum commersonii Dun. as Donor: genetic and agronomic characterisation of a backcross 3 progeny. |
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Fecha de publicación : |
2021 |
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Fuente / Imprenta : |
Potato Research, 2021. Doi: https://doi.org/10.1007/s11540-021-09512-1 |
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ISSN : |
0014-3065 |
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DOI : |
10.1007/s11540-021-09512-1 |
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Idioma : |
Inglés |
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Notas : |
Article history: Received 30 October 2020; Accepted 26 April 2021; Published Online 17 June 2021.
Corresponding author: Gaiero, P., Facultad de Agronomía, Universidad de la República, Garzón 780, Montevideo, Uruguay; email:pgaiero@fagro.edu.uy |
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Contenido : |
ABSTRACT - Bacterial wilt caused by Ralstonia solanacearum is the main bacterial disease in potato. Solanum commersonii Dun. (cmm; 2n = 2x = 24, 1 EBN) is a native species to southern Brazil, Uruguay and Argentina with desirable traits for introgressive hybridisation breeding into cultivated potato such as resistance to R. solanacearum. In Uruguay, successful crosses between cmm and Solanum tuberosum Group Tuberosum (tbr; 2n = 4x = 48, 4 EBN) have been carried out with this objective, resulting in backcross 1, 2 and 3 progenies. The aim of this study was to characterise one backcross 3 progeny (BC3) using cytogenetic, genetic, morphological and agronomic descriptors. Resistance to R. solanacearum showed transgressive segregation and an association with plant architecture. Fifty-two percent of individuals had chromosome numbers close to cultivated potato with no evidence of preferential loss of cmm chromosomes. All BC3 individuals showed male sterility, probably due to nuclear-cytoplasmic interactions. Although there was wide segregation in morphological traits, most individuals resembled the recurrent tbr parents. A few more backcrosses combined with screening for bacterial wilt resistance may be necessary to allow for further recombination and removal of undesirable traits from cmm. The presence of BC3 individuals with chromosome numbers close to 2n = 48, combining morphological traits from tbr with good levels of resistance, suggests the occurrence of introgression events. This points to S. commersonii as one of the most promising genetic resources for potato breeding from the Southern Atlantic region.
© 2021, European Association for Potato Research. MenosABSTRACT - Bacterial wilt caused by Ralstonia solanacearum is the main bacterial disease in potato. Solanum commersonii Dun. (cmm; 2n = 2x = 24, 1 EBN) is a native species to southern Brazil, Uruguay and Argentina with desirable traits for introgressive hybridisation breeding into cultivated potato such as resistance to R. solanacearum. In Uruguay, successful crosses between cmm and Solanum tuberosum Group Tuberosum (tbr; 2n = 4x = 48, 4 EBN) have been carried out with this objective, resulting in backcross 1, 2 and 3 progenies. The aim of this study was to characterise one backcross 3 progeny (BC3) using cytogenetic, genetic, morphological and agronomic descriptors. Resistance to R. solanacearum showed transgressive segregation and an association with plant architecture. Fifty-two percent of individuals had chromosome numbers close to cultivated potato with no evidence of preferential loss of cmm chromosomes. All BC3 individuals showed male sterility, probably due to nuclear-cytoplasmic interactions. Although there was wide segregation in morphological traits, most individuals resembled the recurrent tbr parents. A few more backcrosses combined with screening for bacterial wilt resistance may be necessary to allow for further recombination and removal of undesirable traits from cmm. The presence of BC3 individuals with chromosome numbers close to 2n = 48, combining morphological traits from tbr with good levels of resistance, suggests the occurrence of introgression events.... Presentar Todo |
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Palabras claves : |
Agronomic performance; Backcrossing; Chromosome number; Genetic resistance; Ralstonia solanacearum; Wild potato relative. |
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Asunto categoría : |
F30 Genética vegetal y fitomejoramiento |
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Marc : |
LEADER 02875naa a2200289 a 4500
001 1062208
005 2021-06-30
008 2021 bl uuuu u00u1 u #d
022 $a0014-3065
024 7 $a10.1007/s11540-021-09512-1$2DOI
100 1 $aANDINO, M.
245 $aPotato introgressive hybridisation breeding for bacterial wilt resistance using Solanum commersonii Dun. as Donor$bgenetic and agronomic characterisation of a backcross 3 progeny.$h[electronic resource]
260 $c2021
500 $aArticle history: Received 30 October 2020; Accepted 26 April 2021; Published Online 17 June 2021. Corresponding author: Gaiero, P., Facultad de Agronomía, Universidad de la República, Garzón 780, Montevideo, Uruguay; email:pgaiero@fagro.edu.uy
520 $aABSTRACT - Bacterial wilt caused by Ralstonia solanacearum is the main bacterial disease in potato. Solanum commersonii Dun. (cmm; 2n = 2x = 24, 1 EBN) is a native species to southern Brazil, Uruguay and Argentina with desirable traits for introgressive hybridisation breeding into cultivated potato such as resistance to R. solanacearum. In Uruguay, successful crosses between cmm and Solanum tuberosum Group Tuberosum (tbr; 2n = 4x = 48, 4 EBN) have been carried out with this objective, resulting in backcross 1, 2 and 3 progenies. The aim of this study was to characterise one backcross 3 progeny (BC3) using cytogenetic, genetic, morphological and agronomic descriptors. Resistance to R. solanacearum showed transgressive segregation and an association with plant architecture. Fifty-two percent of individuals had chromosome numbers close to cultivated potato with no evidence of preferential loss of cmm chromosomes. All BC3 individuals showed male sterility, probably due to nuclear-cytoplasmic interactions. Although there was wide segregation in morphological traits, most individuals resembled the recurrent tbr parents. A few more backcrosses combined with screening for bacterial wilt resistance may be necessary to allow for further recombination and removal of undesirable traits from cmm. The presence of BC3 individuals with chromosome numbers close to 2n = 48, combining morphological traits from tbr with good levels of resistance, suggests the occurrence of introgression events. This points to S. commersonii as one of the most promising genetic resources for potato breeding from the Southern Atlantic region. © 2021, European Association for Potato Research.
653 $aAgronomic performance
653 $aBackcrossing
653 $aChromosome number
653 $aGenetic resistance
653 $aRalstonia solanacearum
653 $aWild potato relative
700 1 $aGAIERO, P.
700 1 $aGONZÁLEZ-BARRIOS, P.
700 1 $aGALVÁN, G.
700 1 $aVILARÓ, F.
700 1 $aSPERANZA, P.
773 $tPotato Research, 2021. Doi: https://doi.org/10.1007/s11540-021-09512-1
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