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Registro Completo |
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Biblioteca(s): |
Embrapa Milho e Sorgo. |
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Data corrente: |
26/09/2018 |
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Data da última atualização: |
26/09/2018 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
MAGALHAES, J. V. de; PIÑEROS, M. A.; MACIEL, L. S.; KOCHIAN, L. V. |
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Afiliação: |
JURANDIR VIEIRA DE MAGALHAES, CNPMS; Miguel A. Piñeros, Cornell University; Laiane S. Maciel, Universidade Federal de Minas Gerais; Leon V. Kochian, University of Saskatchewan. |
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Título: |
Emerging pleiotropic mechanisms underlying aluminum resistance and phosphorus acquisition on acidic soils. |
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Ano de publicação: |
2018 |
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Fonte/Imprenta: |
Frontiers in Plant Science, v. 9. p. 1-12, 2018. |
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DOI: |
10.3389/fpls.2018.01420 |
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Idioma: |
Inglês |
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Notas: |
Article 1420. |
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Conteúdo: |
Aluminum (Al) toxicity on acidic soils significantly damages plant roots and inhibits root growth. Hence, crops intoxicated by Al become more sensitive to drought stress and mineral nutrient deficiencies, particularly phosphorus (P) deficiency, which is highly unavailable on tropical soils. Advances in our understanding of the physiological and genetic mechanisms that govern plant Al resistance have led to the identification of Al resistance genes, both in model systems and in crop species. It has long been known that Al resistance has a beneficial effect on crop adaptation to acidic soils. This positive effect happens because the root systems of Al resistant plants show better development in the presence of soil ionic Al3C and are, consequently, more efficient in absorbing sub-soil water and mineral nutrients. This effect of Al resistance on crop production, by itself, warrants intensified efforts to develop and implement, on a breeding scale, modern selection strategies to profit from the knowledge of the molecular determinants of plant Al resistance. Recent studies now suggest that Al resistance can exert pleiotropic effects on P acquisition, potentially expanding the role of Al resistance on crop adaptation to acidic soils. This appears to occur via both organic acid (OA)- and non-OA transporters governing a joint, iron-dependent interplay between Al resistance and enhanced P uptake, via changes in root system architecture. Current research suggests this interplay to be part of a P stress response, suggesting that this mechanism could have evolved in crop species to improve adaptation to acidic soils. Should this pleiotropism prove functional in crop species grown on acidic soils, molecular breeding based on Al resistance genes may have a much broader impact on crop performance than previously anticipated. To explore this possibility, here we review the components of this putative effect of Al resistance genes on P stress responses and P nutrition to provide the foundation necessary to discuss the recent evidence suggesting pleiotropy as a genetic linkage between Al resistance and P efficiency. We conclude by exploring what may be needed to enhance the utilization of Al resistance genes to improve crop production on acidic soils. MenosAluminum (Al) toxicity on acidic soils significantly damages plant roots and inhibits root growth. Hence, crops intoxicated by Al become more sensitive to drought stress and mineral nutrient deficiencies, particularly phosphorus (P) deficiency, which is highly unavailable on tropical soils. Advances in our understanding of the physiological and genetic mechanisms that govern plant Al resistance have led to the identification of Al resistance genes, both in model systems and in crop species. It has long been known that Al resistance has a beneficial effect on crop adaptation to acidic soils. This positive effect happens because the root systems of Al resistant plants show better development in the presence of soil ionic Al3C and are, consequently, more efficient in absorbing sub-soil water and mineral nutrients. This effect of Al resistance on crop production, by itself, warrants intensified efforts to develop and implement, on a breeding scale, modern selection strategies to profit from the knowledge of the molecular determinants of plant Al resistance. Recent studies now suggest that Al resistance can exert pleiotropic effects on P acquisition, potentially expanding the role of Al resistance on crop adaptation to acidic soils. This appears to occur via both organic acid (OA)- and non-OA transporters governing a joint, iron-dependent interplay between Al resistance and enhanced P uptake, via changes in root system architecture. Current research suggests this interplay to be ... Mostrar Tudo |
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Thesagro: |
Alumínio; Fósforo; Melhoramento Vegetal. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/183518/1/Emerging-pleiotropic.pdf
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Marc: |
LEADER 02936naa a2200217 a 4500
001 2096304
005 2018-09-26
008 2018 bl uuuu u00u1 u #d
024 7 $a10.3389/fpls.2018.01420$2DOI
100 1 $aMAGALHAES, J. V. de
245 $aEmerging pleiotropic mechanisms underlying aluminum resistance and phosphorus acquisition on acidic soils.$h[electronic resource]
260 $c2018
500 $aArticle 1420.
520 $aAluminum (Al) toxicity on acidic soils significantly damages plant roots and inhibits root growth. Hence, crops intoxicated by Al become more sensitive to drought stress and mineral nutrient deficiencies, particularly phosphorus (P) deficiency, which is highly unavailable on tropical soils. Advances in our understanding of the physiological and genetic mechanisms that govern plant Al resistance have led to the identification of Al resistance genes, both in model systems and in crop species. It has long been known that Al resistance has a beneficial effect on crop adaptation to acidic soils. This positive effect happens because the root systems of Al resistant plants show better development in the presence of soil ionic Al3C and are, consequently, more efficient in absorbing sub-soil water and mineral nutrients. This effect of Al resistance on crop production, by itself, warrants intensified efforts to develop and implement, on a breeding scale, modern selection strategies to profit from the knowledge of the molecular determinants of plant Al resistance. Recent studies now suggest that Al resistance can exert pleiotropic effects on P acquisition, potentially expanding the role of Al resistance on crop adaptation to acidic soils. This appears to occur via both organic acid (OA)- and non-OA transporters governing a joint, iron-dependent interplay between Al resistance and enhanced P uptake, via changes in root system architecture. Current research suggests this interplay to be part of a P stress response, suggesting that this mechanism could have evolved in crop species to improve adaptation to acidic soils. Should this pleiotropism prove functional in crop species grown on acidic soils, molecular breeding based on Al resistance genes may have a much broader impact on crop performance than previously anticipated. To explore this possibility, here we review the components of this putative effect of Al resistance genes on P stress responses and P nutrition to provide the foundation necessary to discuss the recent evidence suggesting pleiotropy as a genetic linkage between Al resistance and P efficiency. We conclude by exploring what may be needed to enhance the utilization of Al resistance genes to improve crop production on acidic soils.
650 $aAlumínio
650 $aFósforo
650 $aMelhoramento Vegetal
700 1 $aPIÑEROS, M. A.
700 1 $aMACIEL, L. S.
700 1 $aKOCHIAN, L. V.
773 $tFrontiers in Plant Science$gv. 9. p. 1-12, 2018.
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Embrapa Milho e Sorgo (CNPMS) |
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| 4. |  | CORREA, F. S.; MAUES, M. M.; SANTOS, A. S. Análise do déficit de polinização da castanheira-do-brasil (Bertholletia excelsa BONPL., LECYTHIDACEAE) através de crescimento de tubos polínicos em pistilos submetidos a testes de polinização controlada. In: CONGRESSO BRASILEIRO DE RECURSOS GENÉTICOS, 2., 2012, Belém, PA. Anais... Brasília, DF: Sociedade Brasileira de Recursos Genéticos, 2012. 1 CD-ROM.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Amazônia Oriental. |
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| 8. | | MARIOT, M. P.; BARBIERI, R. L.; CORREA, F.; LOUZADA, R. S.; HEIDEN, G. Banco de germoplasma de espinheira-santa: coleta, caracterização e conservação de uma espécie ameaçada. CONGRESSO BRASILEIRO DE AGROECOLOGIA, 2.; SEMINÁRIO INTERNACIONAL SOBRE AGROECOLOGIA, 5.; SEMINÁRIO ESTADUAL SOBRE AGROECOLOGIA, 6., 2004, Porto Alegre. Agrobiodiversidade: base para sociedades sustentáveis: anais... Porto Alegre: EMATER - RS, 2004. 1CD-ROM.| Tipo: Artigo em Anais de Congresso / Nota Técnica | Circulação/Nível: -- - -- |
| Biblioteca(s): Embrapa Clima Temperado. |
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| 11. | | SANTOS, A. S.; MAUES, M. M.; CORREA, F. S.; MOURA, T. A. Biologia da polinização da castanheira-do-brasil (Bertholletia excelsa Bonpl., LECYTHIDACEAE) em Tomé-Açu, Pará. In: CONGRESSO BRASILEIRO DE RECURSOS GENÉTICOS, 2., 2012, Belém, PA. Anais... Brasília, DF: Sociedade Brasileira de Recursos Genéticos, 2012. 1 CD-ROM.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Amazônia Oriental. |
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| 13. | | NASCIMENTO, E. M.; MEDEIROS, R. M. T.; SIMÕES, S. V. D.; RIET-CORREA, F. Compactação ruminal e obstrução intestinal em bovinos, associadas ao consumo de Agave sisalana Perrine (Agavaceae). Pesquisa Veterinária Brasileira, Rio de Janeiro, v. 36, n. 8, p. 719-723, ago. 2016.| Biblioteca(s): Embrapa Unidades Centrais. |
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| 14. | | LOUREIRO, M. de F.; KASCHUK, G.; ALBERTON, O.; HUNGRIA, M.; CORREA, F. Diferenças qualitativas na microbiota do solo relacionadas ao manejo do solo e das culturas. In: REUNIÃO BRASILEIRA DE FERTILIDADE DO SOLO E NUTRIÇÃO DE PLANTAS, 25.; REUNIÃO BRASILEIRA SOBRE MICORRIZAS, 9.; SIMPÓSIO BRASILEIRO DE MICROBIOLOGIA DO SOLO, 7.; REUNIÃO BRASILEIRA DE BIOLOGIA DO SOLO, 4., 2002, Rio de Janeiro. Fertbio 2002: agricultura: bases ecológicas para o desenvolvimento social e econômico sustentado. Rio de Janeiro, 2002. p. 172. Guia do congressista e em CD-ROM.| Biblioteca(s): Embrapa Soja. |
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| 20. | | MARTINS, E.; MARTINS, V. M. V.; RIET-CORREA, F.; SONCINI, R. A.; PARABONI, S. V. Intoxicação em suínos pela ingestão de sementes de fedegoso (Cassia ocidentalis L.) In: CONGRESSO LATINO DE VETERINARIOS ESPECIALISTAS EM SUINOS, 1., CONGRESSO BRASILEIRO DE VETERINARIOS ESPECIALISTAS EM SUINOS, 2., 1985, Rio de Janeiro. Anais... Concordia : EMBRAPA-CNPSA, 1985. p.146| Biblioteca(s): Embrapa Suínos e Aves. |
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| Registros recuperados : 121 | |
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