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 | Acceso al texto completo restringido a Biblioteca INIA La Estanzuela. Por información adicional contacte bib_le@inia.org.uy. |
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Registro completo
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Biblioteca (s) : |
INIA La Estanzuela; INIA Treinta y Tres. |
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Fecha : |
20/08/2019 |
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Actualizado : |
16/03/2021 |
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Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
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Autor : |
LEZAMA, F.; PEREIRA, M.; ALTESOR, A.; PARUELO, J. |
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Afiliación : |
FELIPE LEZAMA; MARCELO PEREIRA; ALICIA ALTESOR; JOSÉ PARUELO, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay. |
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Título : |
Grasslands of Uruguay: classification based on vegetation plots. |
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Fecha de publicación : |
2019 |
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Fuente / Imprenta : |
Phytocoenologia, 2019, v. 49(3): 211-229. Doi: https://doi.org/10.1127/phyto/2019/0215 |
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DOI : |
10.1127/phyto/2019/0215 |
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Idioma : |
Inglés |
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Notas : |
Article history: Submitted: 25 May 2017 //First decision: 6 October 2017// Accepted: 22 August 2018.// Co-ordinating Editor: Idoia Biurrun. |
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Contenido : |
Abstract:
Aims: The Rio de la Plata grasslands are one of the largest areas of temperate humid and sub-humid grasslands
of the world. A substantial fraction of these natural grasslands are preserved in Uruguay, occupying more than
60% of the country. So far, Uruguayan grasslands have been indirectly classified using only geomorphological
and edaphic criteria. An adequate description of vegetation heterogeneity is a prerequisite to study ecosystem
function and to design management and conservation strategies for this region. To this end, we present a classification of the natural grassland communities of Uruguay based on a wide and comprehensive set of phytosociological relevés. Study area: Uruguay. Methods: Three hundred eight grassland relevés were utilized for classification and ordination multivariate analyses. Agglomerative clustering based on the flexible Beta linkage
method and Sørensen distance measure were employed to identify relevé groups. Indicator species analysis was
also performed to identify diagnostic species. We used Non-metric multidimensional scaling to determine the
main floristic gradients. Results: Five communities and 14 sub-communities were identified. Two of the communities were restricted to the ?Basaltic? region of central and northern Uruguay, while the other three were
distributed through the Eastern Hills, North Eastern Sedimentary Basin and the South Central regions. Three
of the communities correspond to densely-vegetated grasslands associated with medium and deep soils. The
remaining two communities correspond to sparsely-vegetated grasslands on shallow soils. The main floristic
gradient separated sparsely-vegetated grasslands from densely-vegetated ones, and was related to soil and topographical characteristics. The second floristic gradient separated grasslands by their different geological substrates. Conclusions: In this study, we present the first attempt to conduct a vegetation classification of Uruguayan grasslands based on floristic composition. Vegetation typologies, like the one we propose, can be used
as a framework to extrapolate point information on grassland management and vulnerability.
Keywords: Campos; cool-season grass; grassland; Indicator Species Analysis; phytosociological MenosAbstract:
Aims: The Rio de la Plata grasslands are one of the largest areas of temperate humid and sub-humid grasslands
of the world. A substantial fraction of these natural grasslands are preserved in Uruguay, occupying more than
60% of the country. So far, Uruguayan grasslands have been indirectly classified using only geomorphological
and edaphic criteria. An adequate description of vegetation heterogeneity is a prerequisite to study ecosystem
function and to design management and conservation strategies for this region. To this end, we present a classification of the natural grassland communities of Uruguay based on a wide and comprehensive set of phytosociological relevés. Study area: Uruguay. Methods: Three hundred eight grassland relevés were utilized for classification and ordination multivariate analyses. Agglomerative clustering based on the flexible Beta linkage
method and Sørensen distance measure were employed to identify relevé groups. Indicator species analysis was
also performed to identify diagnostic species. We used Non-metric multidimensional scaling to determine the
main floristic gradients. Results: Five communities and 14 sub-communities were identified. Two of the communities were restricted to the ?Basaltic? region of central and northern Uruguay, while the other three were
distributed through the Eastern Hills, North Eastern Sedimentary Basin and the South Central regions. Three
of the communities correspond to densely-vegetated grasslands associate... Presentar Todo |
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Palabras claves : |
CAMPOS; COOL-SEASON GRASS; GRASSLAND; INDICATOR SPECIES ANALYSIS; PHYTOSOCIOLOGICAL RELEVÉ; SOIL DEPTH; SPECIES RICHNESS; VEGETATION CLASSIFICATION; WARM-SEASON GRASS. |
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Thesagro : |
PASTURAS; URUGUAY. |
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Asunto categoría : |
A50 Investigación agraria |
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Marc : |
LEADER 03302naa a2200313 a 4500
001 1060036
005 2021-03-16
008 2019 bl uuuu u00u1 u #d
024 7 $a10.1127/phyto/2019/0215$2DOI
100 1 $aLEZAMA, F.
245 $aGrasslands of Uruguay$bclassification based on vegetation plots.$h[electronic resource]
260 $c2019
500 $aArticle history: Submitted: 25 May 2017 //First decision: 6 October 2017// Accepted: 22 August 2018.// Co-ordinating Editor: Idoia Biurrun.
520 $aAbstract: Aims: The Rio de la Plata grasslands are one of the largest areas of temperate humid and sub-humid grasslands of the world. A substantial fraction of these natural grasslands are preserved in Uruguay, occupying more than 60% of the country. So far, Uruguayan grasslands have been indirectly classified using only geomorphological and edaphic criteria. An adequate description of vegetation heterogeneity is a prerequisite to study ecosystem function and to design management and conservation strategies for this region. To this end, we present a classification of the natural grassland communities of Uruguay based on a wide and comprehensive set of phytosociological relevés. Study area: Uruguay. Methods: Three hundred eight grassland relevés were utilized for classification and ordination multivariate analyses. Agglomerative clustering based on the flexible Beta linkage method and Sørensen distance measure were employed to identify relevé groups. Indicator species analysis was also performed to identify diagnostic species. We used Non-metric multidimensional scaling to determine the main floristic gradients. Results: Five communities and 14 sub-communities were identified. Two of the communities were restricted to the ?Basaltic? region of central and northern Uruguay, while the other three were distributed through the Eastern Hills, North Eastern Sedimentary Basin and the South Central regions. Three of the communities correspond to densely-vegetated grasslands associated with medium and deep soils. The remaining two communities correspond to sparsely-vegetated grasslands on shallow soils. The main floristic gradient separated sparsely-vegetated grasslands from densely-vegetated ones, and was related to soil and topographical characteristics. The second floristic gradient separated grasslands by their different geological substrates. Conclusions: In this study, we present the first attempt to conduct a vegetation classification of Uruguayan grasslands based on floristic composition. Vegetation typologies, like the one we propose, can be used as a framework to extrapolate point information on grassland management and vulnerability. Keywords: Campos; cool-season grass; grassland; Indicator Species Analysis; phytosociological
650 $aPASTURAS
650 $aURUGUAY
653 $aCAMPOS
653 $aCOOL-SEASON GRASS
653 $aGRASSLAND
653 $aINDICATOR SPECIES ANALYSIS
653 $aPHYTOSOCIOLOGICAL RELEVÉ
653 $aSOIL DEPTH
653 $aSPECIES RICHNESS
653 $aVEGETATION CLASSIFICATION
653 $aWARM-SEASON GRASS
700 1 $aPEREIRA, M.
700 1 $aALTESOR, A.
700 1 $aPARUELO, J.
773 $tPhytocoenologia, 2019$gv. 49(3): 211-229. Doi: https://doi.org/10.1127/phyto/2019/0215
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Registro original : |
INIA La Estanzuela (LE) |
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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 : |
10/07/2019 |
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Actualizado : |
26/08/2019 |
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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 : |
HERNÁNDEZ-RODRÍGUEZ, L.; BENÍTEZ-GALEANO, M.J.; BERTALMIO, A.; RUBIO, L.; RIVAS, F.; ARRUABARRENA, A.; ROLON, R.; COLINA, R.; MAESO, D. |
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Afiliación : |
LESTER HERNÁNDEZ RODRÍGUEZ, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay.; MARÍA JOSÉ BENÍTEZ-GALEANO, Laboratorio de Virología Molecular, Centro Universitario Regional Noroeste (CENUR Noroeste), Universidad de la República, Salto, Uruguay; ANA MARIA BERTALMIO CASARIEGO, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; LETICIA PAOLA RUBIO CATTANI, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; CARLOS FERNANDO RIVAS GRELA, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; ANA ARRUABARRENA PASCOVICH, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; RODOLFO ROQUE ROLON RODRIGUEZ, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; RODNEY COLINA, Laboratorio de Virología Molecular, Centro Universitario Regional Noroeste (CENUR Noroeste), Universidad de la República, Salto, Uruguay; DIEGO CESAR MAESO TOZZI, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay. |
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Título : |
Diversity of Uruguayan citrus tristeza virus populations segregated after single aphid transmission. |
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Fecha de publicación : |
2019 |
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Fuente / Imprenta : |
Tropical Plant Pathology, 2019, volume 44, Issue 4, pages 352-362 |
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ISSN : |
1983-2052 |
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DOI : |
10.1007/s40858-019-00288-x |
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Idioma : |
Inglés |
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Notas : |
Article history: Received 16 November 2018 / Accepted 10 April 2019 / First Online 06 May 2019 // Published 15 August 2019.
Acknowledgments: This research was funded by the Instituto Nacional de Investigación Agropecuaria (INIA), Uruguay (project CT-06), through the National Program of Citrus Research and the National Citrus Sanitation Program. |
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Contenido : |
ABSTRACT.
Prevalence of citrus tristeza virus (CTV) isolates causing severe stem pitting symptoms with a high diverse genetic composition represents a threat for citrus crops in Uruguay. This work aimed to characterize viral components of CTV populations segregated by single aphid (Toxoptera citricida) transmission (SAT). Thirty-nine SAT-derived sub-isolates were obtained from six CTV field isolates. Only eight were MCA13 non-reactive, and six of them, together with other three MCA13 reactive sub-isolates, were considered mild by the intensity of their reaction in ?Mexican? lime, ?Madam Vinous? sweet orange, ?Duncan? grapefruit and sour orange indicator plants. Fourteen sub-isolates, including two MCA13 non-reactive, were considered moderate, and the remaining sub-isolates were all MCA13 reactive and with severe reactions in the indicator plants. Sequence comparisons of the p20, p23 and p25 genes showed a high inter (among all isolates and their derived sub-isolates)- and intra (among each isolate and its derived sub-isolates)-specific evolutionary diversity, with the presence of the CTV strains VT, T3, RB, and NC in mixtures of their complex populations. Together, our data revealed the heterogeneity of the Uruguayan CTV populations in these CTV field isolates. The results provide additional biological and molecular information on the complex CTV populations in Uruguay and must be considered for improving the CTV management program.
© Sociedade Brasileira de Fitopatologia 2019 MenosABSTRACT.
Prevalence of citrus tristeza virus (CTV) isolates causing severe stem pitting symptoms with a high diverse genetic composition represents a threat for citrus crops in Uruguay. This work aimed to characterize viral components of CTV populations segregated by single aphid (Toxoptera citricida) transmission (SAT). Thirty-nine SAT-derived sub-isolates were obtained from six CTV field isolates. Only eight were MCA13 non-reactive, and six of them, together with other three MCA13 reactive sub-isolates, were considered mild by the intensity of their reaction in ?Mexican? lime, ?Madam Vinous? sweet orange, ?Duncan? grapefruit and sour orange indicator plants. Fourteen sub-isolates, including two MCA13 non-reactive, were considered moderate, and the remaining sub-isolates were all MCA13 reactive and with severe reactions in the indicator plants. Sequence comparisons of the p20, p23 and p25 genes showed a high inter (among all isolates and their derived sub-isolates)- and intra (among each isolate and its derived sub-isolates)-specific evolutionary diversity, with the presence of the CTV strains VT, T3, RB, and NC in mixtures of their complex populations. Together, our data revealed the heterogeneity of the Uruguayan CTV populations in these CTV field isolates. The results provide additional biological and molecular information on the complex CTV populations in Uruguay and must be considered for improving the CTV management program.
© Sociedade Brasileira de Fitopatologia 20... Presentar Todo |
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Palabras claves : |
Biological indexing; Closterovirus; CTV; SAT; Toxoptera citricida. |
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Asunto categoría : |
F01 Cultivo |
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Marc : |
LEADER 02739naa a2200313 a 4500
001 1059942
005 2019-08-26
008 2019 bl uuuu u00u1 u #d
022 $a1983-2052
024 7 $a10.1007/s40858-019-00288-x$2DOI
100 1 $aHERNÁNDEZ-RODRÍGUEZ, L.
245 $aDiversity of Uruguayan citrus tristeza virus populations segregated after single aphid transmission.$h[electronic resource]
260 $c2019
500 $aArticle history: Received 16 November 2018 / Accepted 10 April 2019 / First Online 06 May 2019 // Published 15 August 2019. Acknowledgments: This research was funded by the Instituto Nacional de Investigación Agropecuaria (INIA), Uruguay (project CT-06), through the National Program of Citrus Research and the National Citrus Sanitation Program.
520 $aABSTRACT. Prevalence of citrus tristeza virus (CTV) isolates causing severe stem pitting symptoms with a high diverse genetic composition represents a threat for citrus crops in Uruguay. This work aimed to characterize viral components of CTV populations segregated by single aphid (Toxoptera citricida) transmission (SAT). Thirty-nine SAT-derived sub-isolates were obtained from six CTV field isolates. Only eight were MCA13 non-reactive, and six of them, together with other three MCA13 reactive sub-isolates, were considered mild by the intensity of their reaction in ?Mexican? lime, ?Madam Vinous? sweet orange, ?Duncan? grapefruit and sour orange indicator plants. Fourteen sub-isolates, including two MCA13 non-reactive, were considered moderate, and the remaining sub-isolates were all MCA13 reactive and with severe reactions in the indicator plants. Sequence comparisons of the p20, p23 and p25 genes showed a high inter (among all isolates and their derived sub-isolates)- and intra (among each isolate and its derived sub-isolates)-specific evolutionary diversity, with the presence of the CTV strains VT, T3, RB, and NC in mixtures of their complex populations. Together, our data revealed the heterogeneity of the Uruguayan CTV populations in these CTV field isolates. The results provide additional biological and molecular information on the complex CTV populations in Uruguay and must be considered for improving the CTV management program. © Sociedade Brasileira de Fitopatologia 2019
653 $aBiological indexing
653 $aClosterovirus
653 $aCTV
653 $aSAT
653 $aToxoptera citricida
700 1 $aBENÍTEZ-GALEANO, M.J.
700 1 $aBERTALMIO, A.
700 1 $aRUBIO, L.
700 1 $aRIVAS, F.
700 1 $aARRUABARRENA, A.
700 1 $aROLON, R.
700 1 $aCOLINA, R.
700 1 $aMAESO, D.
773 $tTropical Plant Pathology, 2019, volume 44, Issue 4, pages 352-362
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