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Registro Completo |
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Biblioteca(s): |
Embrapa Café. |
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Data corrente: |
14/07/2020 |
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Data da última atualização: |
14/07/2020 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
BARKA, G. D.; CAIXETA, E. T.; FERREIRA, S. S.; ZAMBOLIM, L. |
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Afiliação: |
GELETA DUGASSA BARKA, UNIVERSIDADE FEDERAL DE VIÇOSA; EVELINE TEIXEIRA CAIXETA MOURA, CNPCa; SÁVIO SIQUEIRA FERREIRA, UNIVERSIDADE FEDERAL DE VIÇOSA; LAÉRCIO ZAMBOLIM, UNIVERSIDADE FEDERAL DE VIÇOSA. |
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Título: |
In silico guided structural and functional analysis of genes with potential involvement in resistance to coffee leaf rust: A functional marker based approach. |
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Ano de publicação: |
2020 |
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Fonte/Imprenta: |
Plos One, v. 15, n. 7, e0222747, 2020. |
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DOI: |
https://doi.org/10.1371/journal.pone.0222747 |
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Idioma: |
Inglês |
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Conteúdo: |
Physiology-based differentiation of SH genes and Hemileia vastatrix races is the principal method employed for the characterization of coffee leaf rust resistance. Based on the gene-for-gene theory, nine major rust resistance genes (SH1-9) have been proposed. However, these genes have not been characterized at the molecular level. Consequently, the lack of molecular data regarding rust resistance genes or candidates is a major bottleneck in coffee breeding. To address this issue, we screened a BAC library with resistance gene analogs (RGAs), identified RGAs, characterized and explored for any SH related candidate genes. Herein, we report the identification and characterization of a gene (gene 11), which shares conserved sequences with other SH genes and displays a characteristic polymorphic allele conferring different resistance phenotypes. Furthermore, comparative analysis of the two RGAs belonging to CC-NBS-LRR revealed more intense diversifying selection in tomato and grape genomes than in coffee. For the first time, the present study has unveiled novel insights into the molecular nature of the SH genes, thereby opening new avenues for coffee rust resistance molecular breeding. The characterized candidate RGA is of particular importance for further biological function analysis in coffee. |
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Thesagro: |
Cafezal; Ferrugem; Hemileia Vastatrix; Resistência. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/214595/1/in-silico-guided-structural.pdf
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Marc: |
LEADER 02024naa a2200217 a 4500
001 2123833
005 2020-07-14
008 2020 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1371/journal.pone.0222747$2DOI
100 1 $aBARKA, G. D.
245 $aIn silico guided structural and functional analysis of genes with potential involvement in resistance to coffee leaf rust$bA functional marker based approach.$h[electronic resource]
260 $c2020
520 $aPhysiology-based differentiation of SH genes and Hemileia vastatrix races is the principal method employed for the characterization of coffee leaf rust resistance. Based on the gene-for-gene theory, nine major rust resistance genes (SH1-9) have been proposed. However, these genes have not been characterized at the molecular level. Consequently, the lack of molecular data regarding rust resistance genes or candidates is a major bottleneck in coffee breeding. To address this issue, we screened a BAC library with resistance gene analogs (RGAs), identified RGAs, characterized and explored for any SH related candidate genes. Herein, we report the identification and characterization of a gene (gene 11), which shares conserved sequences with other SH genes and displays a characteristic polymorphic allele conferring different resistance phenotypes. Furthermore, comparative analysis of the two RGAs belonging to CC-NBS-LRR revealed more intense diversifying selection in tomato and grape genomes than in coffee. For the first time, the present study has unveiled novel insights into the molecular nature of the SH genes, thereby opening new avenues for coffee rust resistance molecular breeding. The characterized candidate RGA is of particular importance for further biological function analysis in coffee.
650 $aCafezal
650 $aFerrugem
650 $aHemileia Vastatrix
650 $aResistência
700 1 $aCAIXETA, E. T.
700 1 $aFERREIRA, S. S.
700 1 $aZAMBOLIM, L.
773 $tPlos One$gv. 15, n. 7, e0222747, 2020.
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Registro original: |
Embrapa Café (CNPCa) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Pecuária Sudeste. Para informações adicionais entre em contato com cppse.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Pecuária Sudeste. |
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Data corrente: |
04/12/2020 |
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Data da última atualização: |
09/01/2024 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 1 |
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Autoria: |
CARRER, M. J.; MAIA, A. G.; VINHOLIS, M. de M. B.; SOUZA FILHO, H. M. de. |
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Afiliação: |
Marcelo José Carrer, UFSCAR; Alexandre Gori Maia, UNICAMP; MARCELA DE MELLO BRANDAO VINHOLIS, CPPSE; Hildo Meirelles de Souza Filho, UFSCAR. |
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Título: |
Assessing the effectiveness of rural credit policy on the adoption of integrated crop-livestock systems in Brazil. |
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Ano de publicação: |
2020 |
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Fonte/Imprenta: |
Land Use Policy, v. 92, e104468, mar. 2020. |
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DOI: |
https://doi.org/10.1016/j.landusepol.2020.104468 |
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Idioma: |
Português |
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Conteúdo: |
This study analyzes the effectiveness of rural credit policy to increase the adoption of ICLS. Analyzes are based on a survey with 175 farmers in the State of São Paulo, Brazil. Our estimates suggest that rural credit has positive and relevant impacts on the adoption of ICLS. In turn, the adoption of these systems may also involve investments in fixed capital and increases in operational costs, which create additional demand for rural credit. Other factors, such as access to extension policy, production scale, ex-ante perceptions, and market infrastructure also explain ICLS adoption. The access to rural credit policy is also determined by dependence on farm income, farmer?s perception of transaction costs, and supply of credit in the municipality. The study finally discusses important implications for the devising of rural credit policies and the diffusion of sustainable production systems in developing countries. |
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Palavras-Chave: |
ILPF; Integrated crop livestock systems (ICLS); Rural credit; Sustainable production systems; Technology adoption. |
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Categoria do assunto: |
B Sociologia Rural |
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Marc: |
LEADER 01696naa a2200229 a 4500
001 2127623
005 2024-01-09
008 2020 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1016/j.landusepol.2020.104468$2DOI
100 1 $aCARRER, M. J.
245 $aAssessing the effectiveness of rural credit policy on the adoption of integrated crop-livestock systems in Brazil.$h[electronic resource]
260 $c2020
520 $aThis study analyzes the effectiveness of rural credit policy to increase the adoption of ICLS. Analyzes are based on a survey with 175 farmers in the State of São Paulo, Brazil. Our estimates suggest that rural credit has positive and relevant impacts on the adoption of ICLS. In turn, the adoption of these systems may also involve investments in fixed capital and increases in operational costs, which create additional demand for rural credit. Other factors, such as access to extension policy, production scale, ex-ante perceptions, and market infrastructure also explain ICLS adoption. The access to rural credit policy is also determined by dependence on farm income, farmer?s perception of transaction costs, and supply of credit in the municipality. The study finally discusses important implications for the devising of rural credit policies and the diffusion of sustainable production systems in developing countries.
653 $aILPF
653 $aIntegrated crop livestock systems (ICLS)
653 $aRural credit
653 $aSustainable production systems
653 $aTechnology adoption
700 1 $aMAIA, A. G.
700 1 $aVINHOLIS, M. de M. B.
700 1 $aSOUZA FILHO, H. M. de
773 $tLand Use Policy$gv. 92, e104468, mar. 2020.
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Embrapa Pecuária Sudeste (CPPSE) |
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