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Registro Completo |
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Biblioteca(s): |
Embrapa Pantanal. |
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Data corrente: |
29/05/2003 |
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Data da última atualização: |
29/05/2003 |
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Autoria: |
SILVA, R. A. M. S.; DAVILA, A. M. R.; RAMIREZ, L.; PELLEGRIN, A. O. |
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Afiliação: |
EMBRAPA Pantanal (Corumba, MS). |
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Título: |
Abortions caused by Trypanosoma vivax in bovines from the Pantanal of Pocone, MT, Brazil. |
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Ano de publicação: |
1997 |
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Fonte/Imprenta: |
Memorias do Instituto Oswaldo Cruz, v.92, p.123, Nov. 1997. Supplement 1. |
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Idioma: |
Inglês |
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Conteúdo: |
Trypanosoma vivax infected non-preganant heifers and heifers in the third trimester of preganancy developed a more severe form of the disease than preganant heifers in the first and second trimesters of preganancy. Calves born of infected heifers had enlarged spleens and lymph nodes and trypanosomes are present intheir blood, providing evidence of transplacental transmission (Ogwu et al. 1986 Theriogenology 25:383-398). In the begining of 1995, several outbreaks of fever, anemia, progressive weakness, loss of condition, loss of appetite, lethargy, substantial weight loss within a relative short period of time, anemia and progressive emanciation, abortion and death of bovines occurred in the Panatanal of Pocone. ten of the twenty-nine (34.48%) bovines (Bos taurus taurus x Bos taurus indicus) from nine cattle ranches were infected by T. vivax. All ranches presented positive animals (Silva, et al. 1996 Mem Inst Oswaldo Cruz 91:561-562). Seven of 9 ranches were investigated for records of abortions. The ranchs were designated as R1 to R7, respectively. The total number of bovines by ranch was 200, 400, 400, 250, 450, 400 and 300 in R1-R7, respectively. The percent of abortions was 8, 0, 1.5, 1.6, 1.3, 0.5 and 0.6 in R1-R7, respectively. All abortions occurred in the third trimester of preganancy. Our results are similar with those recorded by Ogwu & Njoku (loc. cit.) in Nigeria because severe clinical signs (e.g. blindness) were observed in cows from the Pantanal in the third trimester of preganancy. MenosTrypanosoma vivax infected non-preganant heifers and heifers in the third trimester of preganancy developed a more severe form of the disease than preganant heifers in the first and second trimesters of preganancy. Calves born of infected heifers had enlarged spleens and lymph nodes and trypanosomes are present intheir blood, providing evidence of transplacental transmission (Ogwu et al. 1986 Theriogenology 25:383-398). In the begining of 1995, several outbreaks of fever, anemia, progressive weakness, loss of condition, loss of appetite, lethargy, substantial weight loss within a relative short period of time, anemia and progressive emanciation, abortion and death of bovines occurred in the Panatanal of Pocone. ten of the twenty-nine (34.48%) bovines (Bos taurus taurus x Bos taurus indicus) from nine cattle ranches were infected by T. vivax. All ranches presented positive animals (Silva, et al. 1996 Mem Inst Oswaldo Cruz 91:561-562). Seven of 9 ranches were investigated for records of abortions. The ranchs were designated as R1 to R7, respectively. The total number of bovines by ranch was 200, 400, 400, 250, 450, 400 and 300 in R1-R7, respectively. The percent of abortions was 8, 0, 1.5, 1.6, 1.3, 0.5 and 0.6 in R1-R7, respectively. All abortions occurred in the third trimester of preganancy. Our results are similar with those recorded by Ogwu & Njoku (loc. cit.) in Nigeria because severe clinical signs (e.g. blindness) were observed in cows from the Pantanal in the third tr... Mostrar Tudo |
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Palavras-Chave: |
Abortion; Bovine; Parasita; Parasite; Pocone. |
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Thesagro: |
Aborto; Bovino; Trypanosoma Vivax. |
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Thesaurus Nal: |
Brazil; Pantanal. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02255naa a2200277 a 4500
001 1810647
005 2003-05-29
008 1997 bl --- 0-- u #d
100 1 $aSILVA, R. A. M. S.
245 $aAbortions caused by Trypanosoma vivax in bovines from the Pantanal of Pocone, MT, Brazil.
260 $c1997
520 $aTrypanosoma vivax infected non-preganant heifers and heifers in the third trimester of preganancy developed a more severe form of the disease than preganant heifers in the first and second trimesters of preganancy. Calves born of infected heifers had enlarged spleens and lymph nodes and trypanosomes are present intheir blood, providing evidence of transplacental transmission (Ogwu et al. 1986 Theriogenology 25:383-398). In the begining of 1995, several outbreaks of fever, anemia, progressive weakness, loss of condition, loss of appetite, lethargy, substantial weight loss within a relative short period of time, anemia and progressive emanciation, abortion and death of bovines occurred in the Panatanal of Pocone. ten of the twenty-nine (34.48%) bovines (Bos taurus taurus x Bos taurus indicus) from nine cattle ranches were infected by T. vivax. All ranches presented positive animals (Silva, et al. 1996 Mem Inst Oswaldo Cruz 91:561-562). Seven of 9 ranches were investigated for records of abortions. The ranchs were designated as R1 to R7, respectively. The total number of bovines by ranch was 200, 400, 400, 250, 450, 400 and 300 in R1-R7, respectively. The percent of abortions was 8, 0, 1.5, 1.6, 1.3, 0.5 and 0.6 in R1-R7, respectively. All abortions occurred in the third trimester of preganancy. Our results are similar with those recorded by Ogwu & Njoku (loc. cit.) in Nigeria because severe clinical signs (e.g. blindness) were observed in cows from the Pantanal in the third trimester of preganancy.
650 $aBrazil
650 $aPantanal
650 $aAborto
650 $aBovino
650 $aTrypanosoma Vivax
653 $aAbortion
653 $aBovine
653 $aParasita
653 $aParasite
653 $aPocone
700 1 $aDAVILA, A. M. R.
700 1 $aRAMIREZ, L.
700 1 $aPELLEGRIN, A. O.
773 $tMemorias do Instituto Oswaldo Cruz$gv.92, p.123, Nov. 1997. Supplement 1.
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Registro original: |
Embrapa Pantanal (CPAP) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Cerrados. Para informações adicionais entre em contato com cpac.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Cerrados. |
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Data corrente: |
22/11/2021 |
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Data da última atualização: |
25/11/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 2 |
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Autoria: |
PAULITSCH, F.; REIS JUNIOR, F. B. dos; HUNGRIA, M. |
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Afiliação: |
FABIANE PAULITSCH; FABIO BUENO DOS REIS JUNIOR, CPAC; MARIANGELA HUNGRIA DA CUNHA, CNPSO. |
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Título: |
Twenty years of paradigm breaking studies of taxonomy and symbiotic nitrogen fxation by beta rhizobia, and indication of Brazil as a hotspot of Paraburkholderia diversity. |
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Ano de publicação: |
2021 |
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Fonte/Imprenta: |
Archives of Microbiology, v. 203, p. 4785-48-03, 2021. |
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Idioma: |
Inglês |
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Conteúdo: |
Twenty years ago, the first members of the genus Burkholderia capable of nodulating and fixing N2 during symbiosis with leguminous plants were reported. The discovery that β-proteobacteria could nodulate legumes represented a breakthrough event because, for over 100 years, it was thought that all rhizobia belonged exclusively to the α-Proteobacteria class. Over the past 20 years, efforts toward robust characterization of these bacteria with large-scale phylogenomic and taxonomic studies have led to the separation of clinically important and phytopathogenic members of Burkholderia from environmental ones, and the symbiotic nodulating species are now included in the genera Paraburkholderia and Trinickia. Paraburkholderia encompasses the vast majority of β-rhizobia and has been mostly found in South America and South Africa, presenting greater symbiotic affinity with native members of the families Mimosoideae and Papilionoideae, respectively. Being the main center of Mimosa spp. diversity, Brazil is also known as the center of symbiotic Paraburkholderia diversity. Of the 21 symbiotic Paraburkholderia species described to date, 11 have been isolated in Brazil, and others first isolated in different countries have also been found in this country. Additionally, besides the symbiotic N2- fixation capacity of some of its members, Paraburkholderia is considered rich in other beneficial interactions with plants and can promote growth through several direct and indirect mechanisms. Therefore, these bacteria can be considered biological resources employed as environmentally friendly alternatives that could reduce the agricultural dependence on agrochemical inputs. MenosTwenty years ago, the first members of the genus Burkholderia capable of nodulating and fixing N2 during symbiosis with leguminous plants were reported. The discovery that β-proteobacteria could nodulate legumes represented a breakthrough event because, for over 100 years, it was thought that all rhizobia belonged exclusively to the α-Proteobacteria class. Over the past 20 years, efforts toward robust characterization of these bacteria with large-scale phylogenomic and taxonomic studies have led to the separation of clinically important and phytopathogenic members of Burkholderia from environmental ones, and the symbiotic nodulating species are now included in the genera Paraburkholderia and Trinickia. Paraburkholderia encompasses the vast majority of β-rhizobia and has been mostly found in South America and South Africa, presenting greater symbiotic affinity with native members of the families Mimosoideae and Papilionoideae, respectively. Being the main center of Mimosa spp. diversity, Brazil is also known as the center of symbiotic Paraburkholderia diversity. Of the 21 symbiotic Paraburkholderia species described to date, 11 have been isolated in Brazil, and others first isolated in different countries have also been found in this country. Additionally, besides the symbiotic N2- fixation capacity of some of its members, Paraburkholderia is considered rich in other beneficial interactions with plants and can promote growth through several direct and indirect ... Mostrar Tudo |
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Palavras-Chave: |
Betarhizobia. |
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Thesagro: |
Fixação de Nitrogênio; Nodulação. |
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Thesaurus NAL: |
Burkholderia. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02361naa a2200193 a 4500
001 2136407
005 2021-11-25
008 2021 bl uuuu u00u1 u #d
100 1 $aPAULITSCH, F.
245 $aTwenty years of paradigm breaking studies of taxonomy and symbiotic nitrogen fxation by beta rhizobia, and indication of Brazil as a hotspot of Paraburkholderia diversity.$h[electronic resource]
260 $c2021
520 $aTwenty years ago, the first members of the genus Burkholderia capable of nodulating and fixing N2 during symbiosis with leguminous plants were reported. The discovery that β-proteobacteria could nodulate legumes represented a breakthrough event because, for over 100 years, it was thought that all rhizobia belonged exclusively to the α-Proteobacteria class. Over the past 20 years, efforts toward robust characterization of these bacteria with large-scale phylogenomic and taxonomic studies have led to the separation of clinically important and phytopathogenic members of Burkholderia from environmental ones, and the symbiotic nodulating species are now included in the genera Paraburkholderia and Trinickia. Paraburkholderia encompasses the vast majority of β-rhizobia and has been mostly found in South America and South Africa, presenting greater symbiotic affinity with native members of the families Mimosoideae and Papilionoideae, respectively. Being the main center of Mimosa spp. diversity, Brazil is also known as the center of symbiotic Paraburkholderia diversity. Of the 21 symbiotic Paraburkholderia species described to date, 11 have been isolated in Brazil, and others first isolated in different countries have also been found in this country. Additionally, besides the symbiotic N2- fixation capacity of some of its members, Paraburkholderia is considered rich in other beneficial interactions with plants and can promote growth through several direct and indirect mechanisms. Therefore, these bacteria can be considered biological resources employed as environmentally friendly alternatives that could reduce the agricultural dependence on agrochemical inputs.
650 $aBurkholderia
650 $aFixação de Nitrogênio
650 $aNodulação
653 $aBetarhizobia
700 1 $aREIS JUNIOR, F. B. dos
700 1 $aHUNGRIA, M.
773 $tArchives of Microbiology$gv. 203, p. 4785-48-03, 2021.
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