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Registro completo
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Biblioteca (s) : |
INIA Las Brujas. |
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Fecha : |
27/01/2020 |
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Actualizado : |
27/01/2020 |
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Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
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Autor : |
PESSOA, D.A.N.; MEDEIROS, R.M.T.; RIET-CORREA, F. |
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Afiliación : |
DANIELLE A.N. PESSOA, Graduate Studies Program in Science and Animal Health (PPCS), Unidade Acadêmica de Medicina Veterinária (UAMV), Centro de Saúde e Tecnologia Rural (CSTR), Universidade Federal de Campina Grande (UFCG), Patos, PB, Brazil; ROSANE M.T. MEDEIROS, Unidade Acadêmica de Medicina Veterinária (UAMV), Centro de Saúde e Tecnologia Rural (CSTR), Universidade Federal de Campina Grande (UFCG), Patos, PB, Brazil; FRANKLIN RIET-CORREA AMARAL, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay. |
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Título : |
Techniques for prevention and control of poisoning by sodium monofluoroacetate (MFA)-containing plants in ruminants. (Review). [Técnicas para prevenção e controle da intoxicação em ruminantes por plantas que contém monofluoroacetato de sódio.] |
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Complemento del título : |
Livestock Diseases. |
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Fecha de publicación : |
2019 |
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Fuente / Imprenta : |
Pesquisa Veterinaria Brasileira, 2019, Volume 39, Issue 10, Pages 771-779. OPEN ACCESS. Doi: http://dx.doi.org/10.1590/1678-5150-pvb-6373 |
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ISSN : |
0100-736X |
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DOI : |
10.1590/1678-5150-PVB-6373 |
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Idioma : |
Inglés |
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Notas : |
Article history: Received: June 08 2019 / Accepted: June 19 2019. |
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Contenido : |
ABSTRACT.
Monofluoroacetate (MFA)-containing plants cause sudden death associated with exercise in ruminants, and are responsible for significant losses in Brazilian livestock, estimated at 500,000 bovine deaths annually. Most of the times, the control and treatment of this type of poisoning are not efficient, because disease evolution is superacute, usually causing the death of the animal. Due to the difficulty in controlling this intoxication, several studies have suggested alternatives to prevent it, mainly by making animals resistant to the MFA present in these plants or by avoiding their consumption. This literature review addresses the techniques used experimentally to control the poisoning of ruminants by plants containing MFA. The first studies carried out in Brazil demonstrated that goats and sheep that continuously receive non-toxic doses of plant containing MFA show greater resistance to poisoning than untreated animals, and that this resistance can be transmitted by ruminal fluid transfaunation, suggesting that poisoning occurs due to the presence of bacteria that hydrolyze MFA in the rumen. Based on this hypothesis, several MFA-hydrolyzing bacteria were isolated (Enterococcus faecalis, Bacillus sp., Paenibacillus sp., Burkholderia sp., Cupriavidus sp., Staphylococcus sp., Ancylobacter sp., Ralstonia sp., Stenotrophomonas sp., Pigmentiphaga kullae, and Ancylobacter dichloromethanicus). When some of these bacteria were administered intraruminally, they provided the animal with a different level of protection against poisoning. However, it was observed that protection is gradually lost when the bacterium administration is interrupted. Consequently, to obtain more efficient protection, these bacteria should be administered continuously, probably in the form of probiotics. In another assay, MFA was administered to sheep at non-toxic doses to test the hypothesis that this substance could induce the multiplication of bacteria that hydrolyze it in the rumen. There was no increase in resistance to poisoning after administration of MFA; however, no signs of poisoning were observed when animals received trifluoroacetate and no clinical signs were verified when they were challenged with toxic doses of MFA; in contrast, all control animals presented clinical signs. These results suggest that trifluoroacetate induces the proliferation of MFA-degrading bacteria, and can be used in intoxication prophylaxis. The conditioned food aversion technique, using lithium chloride, has been successfully used experimentally to prevent ruminants from ingesting plants that contain MFA. Another alternative tested was the spraying of Amorimia septentrionalis with the endophytic bacterium Herbaspirillum seropedicae, which degrades MFA, resulting in decreased concentration of this compound in the plants. In conclusion, several experimental techniques have been proved efficient in the control and prophylaxis of MFA-containing plant poisoning; however, none of these techniques are available commercially. Further experiments, mainly in the field, should be carried out to adapt some of these techniques to the conditions of extensive breeding in the numerous areas where MFA-containing plants occur.
© 2019 Colegio Brasileiro de Patologia Animal. All rights reserved.
RESUMO.
As plantas que contém monofluoroacetato (MFA) causam morte súbita associada ao exercício em ruminantes, e são responsáveis por grandes perdas na pecuária brasileira, estimadas em 500.000 mortes de bovinos anualmente. O controle e tratamento desse tipo de intoxicação, na maioria das vezes, não apresenta eficiência, visto que a evolução da doença é superaguda, e geralmente ocasiona a morte do animal. Devido à dificuldade no controle dessa intoxicação, diversos estudos sugerem alternativas para preveni-la, principalmente tornando os animais resistentes ao MFA presente nessas plantas ou evitando seu consumo. O objetivo do presente trabalho é fazer uma revisão bibliográfica das técnicas utilizadas experimentalmente para controlar a intoxicação de ruminantes por plantas que contém MFA. Nos primeiros trabalhos realizados no Brasil, foi determinado que caprinos e ovinos que recebem continuadamente doses não tóxicas de planta que contém MFA apresentam maior resistência a intoxicação que animais não tratados e que essa resistência pode ser transmitida por transfaunação de fluído ruminal, sugerindo que a mesma ocorre devido a presença de bactérias que hidrolisam MFA no rúmen. Com base nessa hipótese foram isoladas diversas bactérias que hidrolisam MFA (Enterococcus faecalis, Bacillus sp., Paenibacillus sp., Burkholderia sp., Cupriavidus sp., Staphylococcus sp., Ancylobactersp., Ralstoniasp., Stenotrophomonas sp., Pigmentiphaga kullae e Ancylobacter dichloromethanicus). Quando algumas dessas bactérias foram administradas intraruminalmente conferiram diferentes graus de proteção contra a intoxicação. No entanto foi observado que a proteção se perde gradualmente quando se deixa de administrar a(s) bactéria(s). Em consequência, para obter uma proteção mais eficiente essas bactérias deveriam ser administradas continuadamente, provavelmente na forma de probiótico. Em outro ensaio administrou-se MFA a ovinos em doses não tóxicas para testar a hipótese de que esta substância poderia induzir a multiplicação de bactérias que hidrolisam o mesmo no rúmen. Não houve um aumento da resistência a intoxicação após a administração de MFA; no entanto quando foi administrado trifluoroacetato, os animais não desenvolveram nenhum sinal de intoxicação e quando desafiados com doses tóxicas de MFA não apresentaram sinais clínicos, pelo contrário todos os animais controles apresentaram sinais clínicos. Esses resultados sugerem que o trifluoroacetato induz a proliferação de bactérias que degradam MFA e pode ser utilizado para a profilaxia da intoxicação. A técnica da aversão alimentar condicionada, utilizando cloreto de lítio, tem sido empregada experimentalmente, com sucesso, para evitar que ruminantes ingiram plantas que contém MFA. Outra alternativa testada foi a pulverização de Amorimia septentrionalis com a bactéria endofítica Herbaspirullum seropedicae, que degrada MFA, resultando na diminuição da concentração deste composto na planta. Conclui-se que há diversas técnicas que experimentalmente tem demonstrado eficiência no controle e profilaxia das intoxicações por plantas que contém MFA; no entanto, nenhuma dessas técnicas está disponível comercialmente. Futuros experimentos, principalmente, a campo, deverão ser realizados para adaptar alguma(s) dessas técnicas as condições de criação extensiva nas numerosas áreas onde ocorrem plantas que contém MFA MenosABSTRACT.
Monofluoroacetate (MFA)-containing plants cause sudden death associated with exercise in ruminants, and are responsible for significant losses in Brazilian livestock, estimated at 500,000 bovine deaths annually. Most of the times, the control and treatment of this type of poisoning are not efficient, because disease evolution is superacute, usually causing the death of the animal. Due to the difficulty in controlling this intoxication, several studies have suggested alternatives to prevent it, mainly by making animals resistant to the MFA present in these plants or by avoiding their consumption. This literature review addresses the techniques used experimentally to control the poisoning of ruminants by plants containing MFA. The first studies carried out in Brazil demonstrated that goats and sheep that continuously receive non-toxic doses of plant containing MFA show greater resistance to poisoning than untreated animals, and that this resistance can be transmitted by ruminal fluid transfaunation, suggesting that poisoning occurs due to the presence of bacteria that hydrolyze MFA in the rumen. Based on this hypothesis, several MFA-hydrolyzing bacteria were isolated (Enterococcus faecalis, Bacillus sp., Paenibacillus sp., Burkholderia sp., Cupriavidus sp., Staphylococcus sp., Ancylobacter sp., Ralstonia sp., Stenotrophomonas sp., Pigmentiphaga kullae, and Ancylobacter dichloromethanicus). When some of these bacteria were administered intraruminally, they provided th... Presentar Todo |
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Palabras claves : |
Cattle; Control; Goats; MFA-containing plants; Plant poisoning; PLATAFORMA SALUD ANIMAL; Poisoning; Poisoning control; Prevention; Ruminants; Sheep; Sudden death; Toxic plants. |
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Asunto categoría : |
L73 Enfermedades de los animales |
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URL : |
http://www.scielo.br/pdf/pvb/v39n10/1678-5150-pvb-39-10-771.pdf
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Marc : |
LEADER 08028naa a2200337 a 4500
001 1060698
005 2020-01-27
008 2019 bl uuuu u00u1 u #d
022 $a0100-736X
024 7 $a10.1590/1678-5150-PVB-6373$2DOI
100 1 $aPESSOA, D.A.N.
245 $aTechniques for prevention and control of poisoning by sodium monofluoroacetate (MFA)-containing plants in ruminants. (Review). [Técnicas para prevenção e controle da intoxicação em ruminantes por plantas que contém monofluoroacetato de sódio.]$h[electronic resource]
260 $c2019
500 $aArticle history: Received: June 08 2019 / Accepted: June 19 2019.
520 $aABSTRACT. Monofluoroacetate (MFA)-containing plants cause sudden death associated with exercise in ruminants, and are responsible for significant losses in Brazilian livestock, estimated at 500,000 bovine deaths annually. Most of the times, the control and treatment of this type of poisoning are not efficient, because disease evolution is superacute, usually causing the death of the animal. Due to the difficulty in controlling this intoxication, several studies have suggested alternatives to prevent it, mainly by making animals resistant to the MFA present in these plants or by avoiding their consumption. This literature review addresses the techniques used experimentally to control the poisoning of ruminants by plants containing MFA. The first studies carried out in Brazil demonstrated that goats and sheep that continuously receive non-toxic doses of plant containing MFA show greater resistance to poisoning than untreated animals, and that this resistance can be transmitted by ruminal fluid transfaunation, suggesting that poisoning occurs due to the presence of bacteria that hydrolyze MFA in the rumen. Based on this hypothesis, several MFA-hydrolyzing bacteria were isolated (Enterococcus faecalis, Bacillus sp., Paenibacillus sp., Burkholderia sp., Cupriavidus sp., Staphylococcus sp., Ancylobacter sp., Ralstonia sp., Stenotrophomonas sp., Pigmentiphaga kullae, and Ancylobacter dichloromethanicus). When some of these bacteria were administered intraruminally, they provided the animal with a different level of protection against poisoning. However, it was observed that protection is gradually lost when the bacterium administration is interrupted. Consequently, to obtain more efficient protection, these bacteria should be administered continuously, probably in the form of probiotics. In another assay, MFA was administered to sheep at non-toxic doses to test the hypothesis that this substance could induce the multiplication of bacteria that hydrolyze it in the rumen. There was no increase in resistance to poisoning after administration of MFA; however, no signs of poisoning were observed when animals received trifluoroacetate and no clinical signs were verified when they were challenged with toxic doses of MFA; in contrast, all control animals presented clinical signs. These results suggest that trifluoroacetate induces the proliferation of MFA-degrading bacteria, and can be used in intoxication prophylaxis. The conditioned food aversion technique, using lithium chloride, has been successfully used experimentally to prevent ruminants from ingesting plants that contain MFA. Another alternative tested was the spraying of Amorimia septentrionalis with the endophytic bacterium Herbaspirillum seropedicae, which degrades MFA, resulting in decreased concentration of this compound in the plants. In conclusion, several experimental techniques have been proved efficient in the control and prophylaxis of MFA-containing plant poisoning; however, none of these techniques are available commercially. Further experiments, mainly in the field, should be carried out to adapt some of these techniques to the conditions of extensive breeding in the numerous areas where MFA-containing plants occur. © 2019 Colegio Brasileiro de Patologia Animal. All rights reserved. RESUMO. As plantas que contém monofluoroacetato (MFA) causam morte súbita associada ao exercício em ruminantes, e são responsáveis por grandes perdas na pecuária brasileira, estimadas em 500.000 mortes de bovinos anualmente. O controle e tratamento desse tipo de intoxicação, na maioria das vezes, não apresenta eficiência, visto que a evolução da doença é superaguda, e geralmente ocasiona a morte do animal. Devido à dificuldade no controle dessa intoxicação, diversos estudos sugerem alternativas para preveni-la, principalmente tornando os animais resistentes ao MFA presente nessas plantas ou evitando seu consumo. O objetivo do presente trabalho é fazer uma revisão bibliográfica das técnicas utilizadas experimentalmente para controlar a intoxicação de ruminantes por plantas que contém MFA. Nos primeiros trabalhos realizados no Brasil, foi determinado que caprinos e ovinos que recebem continuadamente doses não tóxicas de planta que contém MFA apresentam maior resistência a intoxicação que animais não tratados e que essa resistência pode ser transmitida por transfaunação de fluído ruminal, sugerindo que a mesma ocorre devido a presença de bactérias que hidrolisam MFA no rúmen. Com base nessa hipótese foram isoladas diversas bactérias que hidrolisam MFA (Enterococcus faecalis, Bacillus sp., Paenibacillus sp., Burkholderia sp., Cupriavidus sp., Staphylococcus sp., Ancylobactersp., Ralstoniasp., Stenotrophomonas sp., Pigmentiphaga kullae e Ancylobacter dichloromethanicus). Quando algumas dessas bactérias foram administradas intraruminalmente conferiram diferentes graus de proteção contra a intoxicação. No entanto foi observado que a proteção se perde gradualmente quando se deixa de administrar a(s) bactéria(s). Em consequência, para obter uma proteção mais eficiente essas bactérias deveriam ser administradas continuadamente, provavelmente na forma de probiótico. Em outro ensaio administrou-se MFA a ovinos em doses não tóxicas para testar a hipótese de que esta substância poderia induzir a multiplicação de bactérias que hidrolisam o mesmo no rúmen. Não houve um aumento da resistência a intoxicação após a administração de MFA; no entanto quando foi administrado trifluoroacetato, os animais não desenvolveram nenhum sinal de intoxicação e quando desafiados com doses tóxicas de MFA não apresentaram sinais clínicos, pelo contrário todos os animais controles apresentaram sinais clínicos. Esses resultados sugerem que o trifluoroacetato induz a proliferação de bactérias que degradam MFA e pode ser utilizado para a profilaxia da intoxicação. A técnica da aversão alimentar condicionada, utilizando cloreto de lítio, tem sido empregada experimentalmente, com sucesso, para evitar que ruminantes ingiram plantas que contém MFA. Outra alternativa testada foi a pulverização de Amorimia septentrionalis com a bactéria endofítica Herbaspirullum seropedicae, que degrada MFA, resultando na diminuição da concentração deste composto na planta. Conclui-se que há diversas técnicas que experimentalmente tem demonstrado eficiência no controle e profilaxia das intoxicações por plantas que contém MFA; no entanto, nenhuma dessas técnicas está disponível comercialmente. Futuros experimentos, principalmente, a campo, deverão ser realizados para adaptar alguma(s) dessas técnicas as condições de criação extensiva nas numerosas áreas onde ocorrem plantas que contém MFA
653 $aCattle
653 $aControl
653 $aGoats
653 $aMFA-containing plants
653 $aPlant poisoning
653 $aPLATAFORMA SALUD ANIMAL
653 $aPoisoning
653 $aPoisoning control
653 $aPrevention
653 $aRuminants
653 $aSheep
653 $aSudden death
653 $aToxic plants
700 1 $aMEDEIROS, R.M.T.
700 1 $aRIET-CORREA, F.
773 $tPesquisa Veterinaria Brasileira, 2019, Volume 39, Issue 10, Pages 771-779. OPEN ACCESS. Doi: http://dx.doi.org/10.1590/1678-5150-pvb-6373
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INIA Las Brujas (LB) |
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INIA La Estanzuela. |
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Fecha actual : |
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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