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 | Acesso ao texto completo restrito à biblioteca da Embrapa Milho e Sorgo. Para informações adicionais entre em contato com cnpms.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Milho e Sorgo. |
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Data corrente: |
01/02/2010 |
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Data da última atualização: |
18/03/2019 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
MARON, L. G.; PIÑEROS, M. A.; GUIMARAES, C. T.; MAGALHAES, J. V. de; PLEIMAN, J. K.; MAO, C.; SHAFF, J.; BELICUAS, S. N. J; KOCHIAN, L. V. |
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Afiliação: |
Lyza G. Maron, Cornell University; Miguel A. Piñeros, Cornell University; CLAUDIA TEIXEIRA GUIMARAES, CNPMS; JURANDIR VIEIRA DE MAGALHAES, CNPMS; Jennifer K. Pleiman, Cornell University; Chuanzao Mao, Zheijang University; Jon Shaff, Cornell University; SILVIA NETO JARDIM, CNPMS; Leon V. Kochian, Cornell University. |
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Título: |
Two functionally distinct members of the MATE (multi-drug and toxic compound extrusion) family of transporters potentially underlie two major aluminum tolerance QTLs in maize. |
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Ano de publicação: |
2010 |
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Fonte/Imprenta: |
The Plant Journal, Oxford, v. 61, n. 5, p. 728-740, 2010. |
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DOI: |
10.1111/j.1365-313X.2009.04103.x |
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Idioma: |
Inglês |
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Conteúdo: |
Crop yields are significantly reduced by aluminum (Al) toxicity on acidic soils, which comprise up to 50% of the world?s arable land. Al-activated release of ligands (such as organic acids) from the roots is a major Al tolerance mechanism in plants. In maize, Al-activated root citrate exudation plays an important role in tolerance. However, maize Al tolerance is a complex trait involving multiple genes and physiological mechanisms. Recently, transporters from the MATE family have been shown to mediate Al-activated citrate exudation in a number of plant species. Here we describe the cloning and characterization of two MATE family members in maize, ZmMATE1 and ZmMATE2, which co-localize to major Al tolerance QTL. Both genes encode plasma membrane proteins that mediate significant anion efflux when expressed in Xenopus oocytes. ZmMATE1 expression is mostly concentrated in root tissues, is up-regulated by Al and is significantly higher in Al-tolerant maize genotypes. In contrast, ZmMATE2 expression is not specifically localized to any particular tissue and does not respond to Al. [14C]-citrate efflux experiments in oocytes demonstrate that ZmMATE1 is a citrate transporter. In addition, ZmMATE1 expression confers a significant increase in Al tolerance in transgenic Arabidopsis. Our data suggests that ZmMATE1 is a functional homolog of the Al tolerance genes recently characterized in sorghum, barley and Arabidopsis, and is likely to underlie the largest maize Al tolerance QTL found on chromosome 6. However, ZmMATE2 most likely does not encode a citrate transporter, and could be involved in a novel Al tolerance mechanism. MenosCrop yields are significantly reduced by aluminum (Al) toxicity on acidic soils, which comprise up to 50% of the world?s arable land. Al-activated release of ligands (such as organic acids) from the roots is a major Al tolerance mechanism in plants. In maize, Al-activated root citrate exudation plays an important role in tolerance. However, maize Al tolerance is a complex trait involving multiple genes and physiological mechanisms. Recently, transporters from the MATE family have been shown to mediate Al-activated citrate exudation in a number of plant species. Here we describe the cloning and characterization of two MATE family members in maize, ZmMATE1 and ZmMATE2, which co-localize to major Al tolerance QTL. Both genes encode plasma membrane proteins that mediate significant anion efflux when expressed in Xenopus oocytes. ZmMATE1 expression is mostly concentrated in root tissues, is up-regulated by Al and is significantly higher in Al-tolerant maize genotypes. In contrast, ZmMATE2 expression is not specifically localized to any particular tissue and does not respond to Al. [14C]-citrate efflux experiments in oocytes demonstrate that ZmMATE1 is a citrate transporter. In addition, ZmMATE1 expression confers a significant increase in Al tolerance in transgenic Arabidopsis. Our data suggests that ZmMATE1 is a functional homolog of the Al tolerance genes recently characterized in sorghum, barley and Arabidopsis, and is likely to underlie the largest maize Al tolerance QTL foun... Mostrar Tudo |
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Palavras-Chave: |
Tolerância. |
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Thesagro: |
Alumínio; Milho; Zea mays. |
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Categoria do assunto: |
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Marc: |
LEADER 02522naa a2200277 a 4500
001 1631894
005 2019-03-18
008 2010 bl uuuu u00u1 u #d
024 7 $a10.1111/j.1365-313X.2009.04103.x$2DOI
100 1 $aMARON, L. G.
245 $aTwo functionally distinct members of the MATE (multi-drug and toxic compound extrusion) family of transporters potentially underlie two major aluminum tolerance QTLs in maize.$h[electronic resource]
260 $c2010
520 $aCrop yields are significantly reduced by aluminum (Al) toxicity on acidic soils, which comprise up to 50% of the world?s arable land. Al-activated release of ligands (such as organic acids) from the roots is a major Al tolerance mechanism in plants. In maize, Al-activated root citrate exudation plays an important role in tolerance. However, maize Al tolerance is a complex trait involving multiple genes and physiological mechanisms. Recently, transporters from the MATE family have been shown to mediate Al-activated citrate exudation in a number of plant species. Here we describe the cloning and characterization of two MATE family members in maize, ZmMATE1 and ZmMATE2, which co-localize to major Al tolerance QTL. Both genes encode plasma membrane proteins that mediate significant anion efflux when expressed in Xenopus oocytes. ZmMATE1 expression is mostly concentrated in root tissues, is up-regulated by Al and is significantly higher in Al-tolerant maize genotypes. In contrast, ZmMATE2 expression is not specifically localized to any particular tissue and does not respond to Al. [14C]-citrate efflux experiments in oocytes demonstrate that ZmMATE1 is a citrate transporter. In addition, ZmMATE1 expression confers a significant increase in Al tolerance in transgenic Arabidopsis. Our data suggests that ZmMATE1 is a functional homolog of the Al tolerance genes recently characterized in sorghum, barley and Arabidopsis, and is likely to underlie the largest maize Al tolerance QTL found on chromosome 6. However, ZmMATE2 most likely does not encode a citrate transporter, and could be involved in a novel Al tolerance mechanism.
650 $aAlumínio
650 $aMilho
650 $aZea mays
653 $aTolerância
700 1 $aPIÑEROS, M. A.
700 1 $aGUIMARAES, C. T.
700 1 $aMAGALHAES, J. V. de
700 1 $aPLEIMAN, J. K.
700 1 $aMAO, C.
700 1 $aSHAFF, J.
700 1 $aBELICUAS, S. N. J
700 1 $aKOCHIAN, L. V.
773 $tThe Plant Journal, Oxford$gv. 61, n. 5, p. 728-740, 2010.
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Registro original: |
Embrapa Milho e Sorgo (CNPMS) |
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Registro |
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Voltar
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Registro Completo
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Biblioteca(s): |
Embrapa Amazônia Ocidental; Embrapa Unidades Centrais. |
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Data corrente: |
17/03/1998 |
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Data da última atualização: |
23/01/2020 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
Nacional - A |
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Autoria: |
ZAFFARONI, E.; TERRES, A. L.; BEVILAQUA, G. A. P.; ROBAINA, A. D.; LIMA, D. de; SILVA FILHO, P. M. da; LOPES, R. |
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Afiliação: |
EDUARDO ZAFFARONI, Universidade Federal de Pelotas - UFPel/Faculdade de Agricultura Eliseu Maciel - FAEM/Departamento Fitotecnia. Bolsista do CNPq.; ARLEI LAERTE TERRES, CPACT; GILBERTO ANTONIO PERIPOLIO BEVILAQUA, Universidade Federal de Pelotas - UFPel/Faculdade de Agricultura Eliseu Maciel - FAEM/Departamento Fitotecnia. Bolsista do CNPq.; ANTONIO DIAS ROBAINA, Universidade Federal de Mato Grosso do Sul - UFMS/Departamento Ciências Agrárias; DIVANIA DE LIMA, CPAA; PEDRO MOREIRA DA SILVA FILHO, SPSB; ROBERTA LOPES, Universidade Federal de Pelotas - UFPel/Faculdade de Agricultura Eliseu Maciel - FAEM/Departamento Fitotecnia. Bolsista do CNPq. |
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Título: |
Análise de caminho nos componentes do rendimento de genótipos de arroz no Rio Grande do Sul. |
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Ano de publicação: |
1998 |
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Fonte/Imprenta: |
Pesquisa Agropecuária Brasileira, Brasília, DF, v. 33, n. 1, p. 43-48, jan. 1998. |
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Idioma: |
Português |
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Notas: |
Título em inglês: Path analysis on the yield components of genotypes of rice in the State of Rio Grande do Sul. |
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Conteúdo: |
Com o objetivo de avaliar o rendimento de cultivares e linhagens de arroz e verificar a influencia dos componentes do rendimento na producao, nove genotipos de arroz foram cultivados em 1993/94. Foram estudados os genotipos: EMBRAPA 39-AGRISUL, TF296-1-8, CL Selecao 447B-B, CL 99-40-2, CL 78-84-IM-26M-M, TF 231-13-1M-5-B, EMBRAPA 6-CHUI, EMBRAPA 7-TAIM e IRGA 410.As variaveis numero de plantas por hectare, numero de paniculas por planta, numero de graos por panicula e peso de mil graos constituiram os componentes de rendimento, que, apos analisados, permitiram estimar o rendimento fisico da lavoura. Os genotipos que apresentaram maior produtividade foram CL-78-84-IM-26M-M, IRGA 410 e EMBRAPA 6-CHUI. Os componentes de rendimento que mais afetaram a producao foram o numero de graos/panicula e o peso de mil graos. |
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Thesagro: |
Arroz; Genótipo; Linhagem; Oryza Sativa. |
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Categoria do assunto: |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/47078/1/ANALISE-DE-CAMINHO-NOS-COMPONENTES-DO-RENDIMENTO.pdf
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Marc: |
LEADER 01644naa a2200253 a 4500
001 2119274
005 2020-01-23
008 1998 bl uuuu u00u1 u #d
100 1 $aZAFFARONI, E.
245 $aAnálise de caminho nos componentes do rendimento de genótipos de arroz no Rio Grande do Sul.
260 $c1998
500 $aTítulo em inglês: Path analysis on the yield components of genotypes of rice in the State of Rio Grande do Sul.
520 $aCom o objetivo de avaliar o rendimento de cultivares e linhagens de arroz e verificar a influencia dos componentes do rendimento na producao, nove genotipos de arroz foram cultivados em 1993/94. Foram estudados os genotipos: EMBRAPA 39-AGRISUL, TF296-1-8, CL Selecao 447B-B, CL 99-40-2, CL 78-84-IM-26M-M, TF 231-13-1M-5-B, EMBRAPA 6-CHUI, EMBRAPA 7-TAIM e IRGA 410.As variaveis numero de plantas por hectare, numero de paniculas por planta, numero de graos por panicula e peso de mil graos constituiram os componentes de rendimento, que, apos analisados, permitiram estimar o rendimento fisico da lavoura. Os genotipos que apresentaram maior produtividade foram CL-78-84-IM-26M-M, IRGA 410 e EMBRAPA 6-CHUI. Os componentes de rendimento que mais afetaram a producao foram o numero de graos/panicula e o peso de mil graos.
650 $aArroz
650 $aGenótipo
650 $aLinhagem
650 $aOryza Sativa
700 1 $aTERRES, A. L.
700 1 $aBEVILAQUA, G. A. P.
700 1 $aROBAINA, A. D.
700 1 $aLIMA, D. de
700 1 $aSILVA FILHO, P. M. da
700 1 $aLOPES, R.
773 $tPesquisa Agropecuária Brasileira, Brasília, DF$gv. 33, n. 1, p. 43-48, jan. 1998.
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Registro original: |
Embrapa Amazônia Ocidental (CPAA) |
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