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Biblioteca (s) : |
INIA La Estanzuela. |
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Fecha : |
21/01/2022 |
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Actualizado : |
21/01/2022 |
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Tipo de producción científica : |
Abstracts/Resúmenes |
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Autor : |
MEROTTO JR., A.; MARKUS, C.; NUNES,A.L.; KASPARY, T. E. |
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Afiliación : |
A MEROTTO JR., UFRGS, Porto Alegre, Brazil.; C MARKUS, UFRGS, Porto Alegre, Brazil.; AL NUNES, IFRS, Sertão.; TIAGO EDU KASPARY, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay. |
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Título : |
Seed shattering in weedy rice is not similarly regulated as in cultivated rice. |
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Fecha de publicación : |
2020 |
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Fuente / Imprenta : |
In: International Temperate Rice Conference (7., 2020, Pelotas, RS), Science & Innovation: feeding a world of 10 billion people: proceedings. Pelotas RS, Brasil, February 9-12, 2020. Brasília, DF : Embrapa, 2020. |
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Páginas : |
p. 103. |
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ISBN : |
978-65-00-00331-4 |
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Idioma : |
Inglés |
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Contenido : |
ABSTRACT:
Although seed shattering is one of the main causes of weedy rice persistence it still is poorly understood. The aim of this study was to identify the main genes related with the occurrence of seed shattering in weedy rice. Gene expression and DNA sequencing of the coding and promoter region and a whole genome sequencing were performed in weedy and cultivated rice with contrasting seed shattering. The main genes
associated with the seed shattering in cultivated rice Sh4, qSH1 and SHAT1 were not important in weedy rice. The expression of the gene OsCPL1 was positively associated with high seed shattering in weedy rice, which is the opposite than in cultivated rice. This result is related to the absence of four SNPs and an indel in the OsCPL1 gene in weedy rice. The analysis of the expression of six genes related to cell wall synthesis/degradation pioneering revealed the importance of the genes OsXTH8 and OsCel9D to seed shattering in weedy rice. The
nucleotide variability of eight genes identified on a genome-wide re-sequencing study in cultivated rice indicated that only the genes Os01g0849100 and Os08g0512400 were associated with seed shattering in weedy rice. The whole genome sequencing of genotypes with high seed shattering indicates a variation on the promoter region of the gene OsXTH8. An insertion of G or C on this region next to the gibberellin motif was identified in all weedy rice genotypes with high seed shattering. This study evaluated jointly a series of genes involved in rice seed
shattering and indicated that genes qSH1, Sh4 and SHAT1 are not important in weedy rice, and that the genes OsCPL1, OsCel9D, OsXTH8, Os08g0512400 and Os01g0849100 should be considered in studies of weedy rice evolution and in the development of mitigation approaches gene flow between cultivated and weedy rice. MenosABSTRACT:
Although seed shattering is one of the main causes of weedy rice persistence it still is poorly understood. The aim of this study was to identify the main genes related with the occurrence of seed shattering in weedy rice. Gene expression and DNA sequencing of the coding and promoter region and a whole genome sequencing were performed in weedy and cultivated rice with contrasting seed shattering. The main genes
associated with the seed shattering in cultivated rice Sh4, qSH1 and SHAT1 were not important in weedy rice. The expression of the gene OsCPL1 was positively associated with high seed shattering in weedy rice, which is the opposite than in cultivated rice. This result is related to the absence of four SNPs and an indel in the OsCPL1 gene in weedy rice. The analysis of the expression of six genes related to cell wall synthesis/degradation pioneering revealed the importance of the genes OsXTH8 and OsCel9D to seed shattering in weedy rice. The
nucleotide variability of eight genes identified on a genome-wide re-sequencing study in cultivated rice indicated that only the genes Os01g0849100 and Os08g0512400 were associated with seed shattering in weedy rice. The whole genome sequencing of genotypes with high seed shattering indicates a variation on the promoter region of the gene OsXTH8. An insertion of G or C on this region next to the gibberellin motif was identified in all weedy rice genotypes with high seed shattering. This study evaluated jointly a series of... Presentar Todo |
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Palabras claves : |
Abscission layer; Oryza sativa; QSH1; Red rice; Seed dispersal; Sh4. |
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Thesagro : |
ARROZ. |
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Asunto categoría : |
H60 Malezas y escardas |
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URL : |
http://www.ainfo.inia.uy/digital/bitstream/item/16235/1/Proceedings-7th-ITRC.pdf-p.103.pdf
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Marc : |
LEADER 02682nam a2200253 a 4500
001 1062697
005 2022-01-21
008 2020 bl uuuu u01u1 u #d
020 $a978-65-00-00331-4
100 1 $aMEROTTO JR., A.
245 $aSeed shattering in weedy rice is not similarly regulated as in cultivated rice.$h[electronic resource]
260 $aIn: International Temperate Rice Conference (7., 2020, Pelotas, RS), Science & Innovation: feeding a world of 10 billion people: proceedings. Pelotas RS, Brasil, February 9-12, 2020. Brasília, DF : Embrapa$c2020
300 $ap. 103.
520 $aABSTRACT: Although seed shattering is one of the main causes of weedy rice persistence it still is poorly understood. The aim of this study was to identify the main genes related with the occurrence of seed shattering in weedy rice. Gene expression and DNA sequencing of the coding and promoter region and a whole genome sequencing were performed in weedy and cultivated rice with contrasting seed shattering. The main genes associated with the seed shattering in cultivated rice Sh4, qSH1 and SHAT1 were not important in weedy rice. The expression of the gene OsCPL1 was positively associated with high seed shattering in weedy rice, which is the opposite than in cultivated rice. This result is related to the absence of four SNPs and an indel in the OsCPL1 gene in weedy rice. The analysis of the expression of six genes related to cell wall synthesis/degradation pioneering revealed the importance of the genes OsXTH8 and OsCel9D to seed shattering in weedy rice. The nucleotide variability of eight genes identified on a genome-wide re-sequencing study in cultivated rice indicated that only the genes Os01g0849100 and Os08g0512400 were associated with seed shattering in weedy rice. The whole genome sequencing of genotypes with high seed shattering indicates a variation on the promoter region of the gene OsXTH8. An insertion of G or C on this region next to the gibberellin motif was identified in all weedy rice genotypes with high seed shattering. This study evaluated jointly a series of genes involved in rice seed shattering and indicated that genes qSH1, Sh4 and SHAT1 are not important in weedy rice, and that the genes OsCPL1, OsCel9D, OsXTH8, Os08g0512400 and Os01g0849100 should be considered in studies of weedy rice evolution and in the development of mitigation approaches gene flow between cultivated and weedy rice.
650 $aARROZ
653 $aAbscission layer
653 $aOryza sativa
653 $aQSH1
653 $aRed rice
653 $aSeed dispersal
653 $aSh4
700 1 $aMARKUS, C.
700 1 $aNUNES,A.L.
700 1 $aKASPARY, T. E.
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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 : |
06/12/2023 |
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Actualizado : |
06/12/2023 |
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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 : |
ALDABE, J.; SÁNCHEZ-IRIARTE, A.I.; RIVAS, M.; BLUMETTO, O. |
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Afiliación : |
JOAQUÍN ALDABE, Department of Agrarian Systems and Cultural Landscapes, Eastern Regional University Center, University of the Republic, Rocha, Uruguay; Flyways Program, Manomet, Plymouth, 02345, MA, United States; ANA INÉS SÁNCHEZ-IRIARTE, Private Consultant, Amado Abdo s/n, Rocha, Velázquez, 27303, Uruguay; MERCEDES RIVAS, Department of Agrarian Systems and Cultural Landscapes, Eastern Regional University Center, University of the Republic, Rocha, Uruguay; Department of Plant Biology, Faculty of Agronomy, University of the Republic, Montevideo, Uruguay; OSCAR RICARDO BLUMETTO VELAZCO, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay. |
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Título : |
Managing grass height for birds and livestock: Insights from the Río de la Plata grasslands. |
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Fecha de publicación : |
2023 |
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Fuente / Imprenta : |
Rangeland Ecology and Management, 2024, Volume 92, Pages 113-121. https://doi.org/10.1016/j.rama.2023.10.004 |
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ISSN : |
1550-7424 |
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DOI : |
10.1016/j.rama.2023.10.004 |
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Idioma : |
Inglés |
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Notas : |
Article history: Received 2 June 2023; Revised 19 August 2023; Accepted 16 October 2023; Available online 18 November 2023; Version of Record 18 November 2023. -- Correspondence: Aldabe, J.; Dept of Agrarian Systems and Cultural Landscapes, Eastern Regional University Center, University of the Republic, Ruta 15 km 28.500, Rocha, Uruguay; email: joaquin.aldabe@gmail.com -- FUNDING: This work was supported by a Fontagro project leaded by Facultad de Agronomía, Universidad de la República, Uruguay and Instituto Nacional de Investigaciones Agropecuarias (INIA) and International Programs, US Forest Service and Southern Cone Grassland Alliance. -- |
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Contenido : |
ABSTRACT.- Success in conserving biodiversity in rangelands depends on effectively managing the systems to achieve positive economic outcomes while preserving biodiversity. In the native grasslands of the Río de la Plata region, livestock production often falls below its potential due to low forage availability. Cattle management strategies that promote taller grass height can increase forage mass without replacing native vegetation, enhancing cattle dry matter intake and potentially boosting production. Nonetheless, the impact of such changes on grassland bird populations remains unclear. In this study, we implemented management changes to increase grass height across six ranches and evaluated the responses of grassland bird specialists. Initially, the average grass height was 6 cm, but after the management changes, it increased to an average of 12 cm. This also increased grass heterogeneity, which is desirable for supporting a higher richness of grassland birds. We found that both the abundances of individual grassland bird species and richness did not vary after the management changes. Moreover, threatened grassland bird species that rely strictly on taller grasses did not colonize the paddocks following the alterations. Therefore, we conclude that maintaining the abundance of seven grassland bird specialists and potentially increasing livestock production is feasible, as the attained grass height coincided with levels known to maximize cattle dry matter intake rate. However, achieved average grass height was not sufficiently tall to support endangered tall grass specialists. It is possible that longer time frames allow tussocks to grow taller and provide such habitat conditions. Most previous research on rangelands biodiversity has focused on assessing faunal responses in either ungrazed or heavily grazed areas. Therefore, our findings contribute to a better understanding of faunal responses within this spectrum and align with a win-win production-conservation approach, which can aid in safeguarding biodiversity across large geographic scales. © 2023 The Society for Range Management MenosABSTRACT.- Success in conserving biodiversity in rangelands depends on effectively managing the systems to achieve positive economic outcomes while preserving biodiversity. In the native grasslands of the Río de la Plata region, livestock production often falls below its potential due to low forage availability. Cattle management strategies that promote taller grass height can increase forage mass without replacing native vegetation, enhancing cattle dry matter intake and potentially boosting production. Nonetheless, the impact of such changes on grassland bird populations remains unclear. In this study, we implemented management changes to increase grass height across six ranches and evaluated the responses of grassland bird specialists. Initially, the average grass height was 6 cm, but after the management changes, it increased to an average of 12 cm. This also increased grass heterogeneity, which is desirable for supporting a higher richness of grassland birds. We found that both the abundances of individual grassland bird species and richness did not vary after the management changes. Moreover, threatened grassland bird species that rely strictly on taller grasses did not colonize the paddocks following the alterations. Therefore, we conclude that maintaining the abundance of seven grassland bird specialists and potentially increasing livestock production is feasible, as the attained grass height coincided with levels known to maximize cattle dry matter intake rate. Howe... Presentar Todo |
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Palabras claves : |
ÁREA DE RECURSOS NATURALES, PRODUCCIÓN Y AMBIENTE - INIA; Biodiversity conservation; Ecology; Grassland bird populations; Life on land - Goal 15; Livestock production; Rangeland management; Sustainable Development Goals (SDGs). |
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Asunto categoría : |
P01 Conservación de la naturaleza y recursos de La tierra |
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Marc : |
LEADER 03756naa a2200289 a 4500
001 1064389
005 2023-12-06
008 2023 bl uuuu u00u1 u #d
022 $a1550-7424
024 7 $a10.1016/j.rama.2023.10.004$2DOI
100 1 $aALDABE, J.
245 $aManaging grass height for birds and livestock$bInsights from the Río de la Plata grasslands.$h[electronic resource]
260 $c2023
500 $aArticle history: Received 2 June 2023; Revised 19 August 2023; Accepted 16 October 2023; Available online 18 November 2023; Version of Record 18 November 2023. -- Correspondence: Aldabe, J.; Dept of Agrarian Systems and Cultural Landscapes, Eastern Regional University Center, University of the Republic, Ruta 15 km 28.500, Rocha, Uruguay; email: joaquin.aldabe@gmail.com -- FUNDING: This work was supported by a Fontagro project leaded by Facultad de Agronomía, Universidad de la República, Uruguay and Instituto Nacional de Investigaciones Agropecuarias (INIA) and International Programs, US Forest Service and Southern Cone Grassland Alliance. --
520 $aABSTRACT.- Success in conserving biodiversity in rangelands depends on effectively managing the systems to achieve positive economic outcomes while preserving biodiversity. In the native grasslands of the Río de la Plata region, livestock production often falls below its potential due to low forage availability. Cattle management strategies that promote taller grass height can increase forage mass without replacing native vegetation, enhancing cattle dry matter intake and potentially boosting production. Nonetheless, the impact of such changes on grassland bird populations remains unclear. In this study, we implemented management changes to increase grass height across six ranches and evaluated the responses of grassland bird specialists. Initially, the average grass height was 6 cm, but after the management changes, it increased to an average of 12 cm. This also increased grass heterogeneity, which is desirable for supporting a higher richness of grassland birds. We found that both the abundances of individual grassland bird species and richness did not vary after the management changes. Moreover, threatened grassland bird species that rely strictly on taller grasses did not colonize the paddocks following the alterations. Therefore, we conclude that maintaining the abundance of seven grassland bird specialists and potentially increasing livestock production is feasible, as the attained grass height coincided with levels known to maximize cattle dry matter intake rate. However, achieved average grass height was not sufficiently tall to support endangered tall grass specialists. It is possible that longer time frames allow tussocks to grow taller and provide such habitat conditions. Most previous research on rangelands biodiversity has focused on assessing faunal responses in either ungrazed or heavily grazed areas. Therefore, our findings contribute to a better understanding of faunal responses within this spectrum and align with a win-win production-conservation approach, which can aid in safeguarding biodiversity across large geographic scales. © 2023 The Society for Range Management
653 $aÁREA DE RECURSOS NATURALES, PRODUCCIÓN Y AMBIENTE - INIA
653 $aBiodiversity conservation
653 $aEcology
653 $aGrassland bird populations
653 $aLife on land - Goal 15
653 $aLivestock production
653 $aRangeland management
653 $aSustainable Development Goals (SDGs)
700 1 $aSÁNCHEZ-IRIARTE, A.I.
700 1 $aRIVAS, M.
700 1 $aBLUMETTO, O.
773 $tRangeland Ecology and Management, 2024, Volume 92, Pages 113-121. https://doi.org/10.1016/j.rama.2023.10.004
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