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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: |
20/01/2006 |
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Data da última atualização: |
30/05/2018 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
KOCHIAN, L. V.; PENCE, N. S.; LETHAM, D. L. D.; PINEROS, M. A.; MAGALHAES, J. V.; HOEKENGA, O. A.; GARVIN, D. F. |
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Afiliação: |
JURANDIR VIEIRA DE MAGALHAES, CNPMS. |
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Título: |
Mechanisms of metal resistance in plants: aluminum and heavy metals. |
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Ano de publicação: |
2002 |
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Fonte/Imprenta: |
Plant and Soil, The Hague, v. 247, n.1 , p. 109-119, 2002. |
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Idioma: |
Inglês |
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Conteúdo: |
Plants have evolved sophisticated mechanisms to deal with toxic levels of metals in the soil. In this paper, an overview of recent progress with regards to understanding fundamental molecular and physiological mechanisms underlying plant resistance to both aluminium (Al) and heavy metals is presented. The discussion of plant Al resistance will focus on recent advances in our understanding of a mechanism based on Al exclusion from the root apex, which is facilitated by Al-activated exudation of organic acid anions. The consideration of heavy metal resistance will focus on research into a metal hyperaccumulating plant species, the Zn/Cd hyperaccumulator, Thlaspi caerulescens, as an example for plant heavy metal research. Based on the specific cases considered in this paper, it appears that quite different strategies are used for Al and heavy metal resistance. For Al, our current understanding of a resistance mechanism based on excluding soil-borne Al from the root apex is presented. For heavy metals, a totally different strategy based on extreme tolerance and metal hyperaccumulation is described for a hyperaccumulator plant species that has evolved on naturally metalliferous soils. The reason these two strategies are the focus of this paper is that, currently, they are the best understood mechanisms of metal resistance in terrestrial plants. However, it is likely that other mechanisms of Al and/or heavy metal resistance are also operating in certain plant species, and there may be common features shared for dealing with Al and heavy resistance. Future research may uncover a number of novel metal resistance mechanisms in plants. Certainly the complex genetics of Al resistance in some crop plant species, such as rice and maize, suggests that a number of presently unidentified mechanisms are part of an overall strategy of metal resistance in crop plants.. MenosPlants have evolved sophisticated mechanisms to deal with toxic levels of metals in the soil. In this paper, an overview of recent progress with regards to understanding fundamental molecular and physiological mechanisms underlying plant resistance to both aluminium (Al) and heavy metals is presented. The discussion of plant Al resistance will focus on recent advances in our understanding of a mechanism based on Al exclusion from the root apex, which is facilitated by Al-activated exudation of organic acid anions. The consideration of heavy metal resistance will focus on research into a metal hyperaccumulating plant species, the Zn/Cd hyperaccumulator, Thlaspi caerulescens, as an example for plant heavy metal research. Based on the specific cases considered in this paper, it appears that quite different strategies are used for Al and heavy metal resistance. For Al, our current understanding of a resistance mechanism based on excluding soil-borne Al from the root apex is presented. For heavy metals, a totally different strategy based on extreme tolerance and metal hyperaccumulation is described for a hyperaccumulator plant species that has evolved on naturally metalliferous soils. The reason these two strategies are the focus of this paper is that, currently, they are the best understood mechanisms of metal resistance in terrestrial plants. However, it is likely that other mechanisms of Al and/or heavy metal resistance are also operating in certain plant species, and there ma... Mostrar Tudo |
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Palavras-Chave: |
Aluminium resistance; Anion channel; Heavy metal transport; Metal hyperaccumulation; Organic acid exudation. |
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Thesaurus Nal: |
gene expression. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02660naa a2200265 a 4500
001 1489104
005 2018-05-30
008 2002 bl uuuu u00u1 u #d
100 1 $aKOCHIAN, L. V.
245 $aMechanisms of metal resistance in plants$baluminum and heavy metals.$h[electronic resource]
260 $c2002
520 $aPlants have evolved sophisticated mechanisms to deal with toxic levels of metals in the soil. In this paper, an overview of recent progress with regards to understanding fundamental molecular and physiological mechanisms underlying plant resistance to both aluminium (Al) and heavy metals is presented. The discussion of plant Al resistance will focus on recent advances in our understanding of a mechanism based on Al exclusion from the root apex, which is facilitated by Al-activated exudation of organic acid anions. The consideration of heavy metal resistance will focus on research into a metal hyperaccumulating plant species, the Zn/Cd hyperaccumulator, Thlaspi caerulescens, as an example for plant heavy metal research. Based on the specific cases considered in this paper, it appears that quite different strategies are used for Al and heavy metal resistance. For Al, our current understanding of a resistance mechanism based on excluding soil-borne Al from the root apex is presented. For heavy metals, a totally different strategy based on extreme tolerance and metal hyperaccumulation is described for a hyperaccumulator plant species that has evolved on naturally metalliferous soils. The reason these two strategies are the focus of this paper is that, currently, they are the best understood mechanisms of metal resistance in terrestrial plants. However, it is likely that other mechanisms of Al and/or heavy metal resistance are also operating in certain plant species, and there may be common features shared for dealing with Al and heavy resistance. Future research may uncover a number of novel metal resistance mechanisms in plants. Certainly the complex genetics of Al resistance in some crop plant species, such as rice and maize, suggests that a number of presently unidentified mechanisms are part of an overall strategy of metal resistance in crop plants..
650 $agene expression
653 $aAluminium resistance
653 $aAnion channel
653 $aHeavy metal transport
653 $aMetal hyperaccumulation
653 $aOrganic acid exudation
700 1 $aPENCE, N. S.
700 1 $aLETHAM, D. L. D.
700 1 $aPINEROS, M. A.
700 1 $aMAGALHAES, J. V.
700 1 $aHOEKENGA, O. A.
700 1 $aGARVIN, D. F.
773 $tPlant and Soil, The Hague$gv. 247, n.1 , p. 109-119, 2002.
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Registro original: |
Embrapa Milho e Sorgo (CNPMS) |
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Biblioteca(s): |
Embrapa Semiárido. |
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Data corrente: |
21/07/2020 |
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Data da última atualização: |
19/02/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
B - 2 |
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Autoria: |
FERREIRA, K. M.; SIMOES, W. L.; MOUCO, M. A. do C.; SILVA, J. L. da; SILVA, J. S. da; MESQUITA, A. C. |
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Afiliação: |
Kalline Mendes Ferreira; WELSON LIMA SIMOES, CPATSA; MARIA APARECIDA DO CARMO MOUCO, CPATSA; Juliana Leite da Silva; Jucicléia Soares da Silva; Alessandro Carlos Mesquita. |
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Título: |
Efficient management of the application of paclobutrazol for the production and quality of Tommy Atkins mango. |
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Ano de publicação: |
2020 |
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Fonte/Imprenta: |
Research, Society and Development, v. 9, n. 8, e348984894, 2020. |
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DOI: |
http://dx.doi.org/10.33448/rsd-v9i8.4 |
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Idioma: |
Inglês |
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Conteúdo: |
The application of paclobutrazol (PBZ) by irrigation system to induce the flowering of mango may be an economically and environmentally more efficient practice. The objective of this work is to determine the most efficient dose of PBZ to be applied by irrigation system to manage the production and quality of fruits of the mango cultivar ?Tommy Atkins? in the middle region of the São Francisco Valley. The experimental design was randomized blocks with five paclobutrazol doses applied by irrigation system (0.5, 1.0, 1.5, 2.0 and 2.5 g a.i.-1, linear canopy) and an additional treatment (control) with the application of a dose using the conventional form (2.0 g a.i.-1 linear canopy applied manually by haul), and four replications. The variables analyzed were number of panicles, panicle length, number of fruits per plant, average fruit weight, production per plant, economic viability, and qualitative characteristics of fruits. The application of paclobutrazol by irrigation system is more efficient than the conventional application, in which the dose 1.4 g a.i.-1 linear canopy provided a greater number of fruits and a greater production per plant. The highest content of total soluble solids in fruits was obtained at the dose 1.3 g a.i.-1 linear canopy, and acidity decreased as the applied dose of PBZ increased. Regarding the economic analysis, the results show that the application of PBZ by irrigation system increases the revenue by R$ 5,328.00 per hectare in comparison with the conventional application. MenosThe application of paclobutrazol (PBZ) by irrigation system to induce the flowering of mango may be an economically and environmentally more efficient practice. The objective of this work is to determine the most efficient dose of PBZ to be applied by irrigation system to manage the production and quality of fruits of the mango cultivar ?Tommy Atkins? in the middle region of the São Francisco Valley. The experimental design was randomized blocks with five paclobutrazol doses applied by irrigation system (0.5, 1.0, 1.5, 2.0 and 2.5 g a.i.-1, linear canopy) and an additional treatment (control) with the application of a dose using the conventional form (2.0 g a.i.-1 linear canopy applied manually by haul), and four replications. The variables analyzed were number of panicles, panicle length, number of fruits per plant, average fruit weight, production per plant, economic viability, and qualitative characteristics of fruits. The application of paclobutrazol by irrigation system is more efficient than the conventional application, in which the dose 1.4 g a.i.-1 linear canopy provided a greater number of fruits and a greater production per plant. The highest content of total soluble solids in fruits was obtained at the dose 1.3 g a.i.-1 linear canopy, and acidity decreased as the applied dose of PBZ increased. Regarding the economic analysis, the results show that the application of PBZ by irrigation system increases the revenue by R$ 5,328.00 per hectare in comparison with the c... Mostrar Tudo |
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Palavras-Chave: |
PBZ; Tommy Atkins. |
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Thesagro: |
Fruta; Irrigação; Manga; Mangifera Indica; Pós-Colheita; Regulador de Crescimento. |
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Thesaurus NAL: |
Flowering; Mangoes; Paclobutrazol; Postharvest physiology; Postharvest technology. |
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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/214703/1/Efficient-management-of-the-application-of-paclobutrazo-2020.pdf
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Marc: |
LEADER 02550naa a2200349 a 4500
001 2123941
005 2021-02-19
008 2020 bl uuuu u00u1 u #d
024 7 $ahttp://dx.doi.org/10.33448/rsd-v9i8.4$2DOI
100 1 $aFERREIRA, K. M.
245 $aEfficient management of the application of paclobutrazol for the production and quality of Tommy Atkins mango.$h[electronic resource]
260 $c2020
520 $aThe application of paclobutrazol (PBZ) by irrigation system to induce the flowering of mango may be an economically and environmentally more efficient practice. The objective of this work is to determine the most efficient dose of PBZ to be applied by irrigation system to manage the production and quality of fruits of the mango cultivar ?Tommy Atkins? in the middle region of the São Francisco Valley. The experimental design was randomized blocks with five paclobutrazol doses applied by irrigation system (0.5, 1.0, 1.5, 2.0 and 2.5 g a.i.-1, linear canopy) and an additional treatment (control) with the application of a dose using the conventional form (2.0 g a.i.-1 linear canopy applied manually by haul), and four replications. The variables analyzed were number of panicles, panicle length, number of fruits per plant, average fruit weight, production per plant, economic viability, and qualitative characteristics of fruits. The application of paclobutrazol by irrigation system is more efficient than the conventional application, in which the dose 1.4 g a.i.-1 linear canopy provided a greater number of fruits and a greater production per plant. The highest content of total soluble solids in fruits was obtained at the dose 1.3 g a.i.-1 linear canopy, and acidity decreased as the applied dose of PBZ increased. Regarding the economic analysis, the results show that the application of PBZ by irrigation system increases the revenue by R$ 5,328.00 per hectare in comparison with the conventional application.
650 $aFlowering
650 $aMangoes
650 $aPaclobutrazol
650 $aPostharvest physiology
650 $aPostharvest technology
650 $aFruta
650 $aIrrigação
650 $aManga
650 $aMangifera Indica
650 $aPós-Colheita
650 $aRegulador de Crescimento
653 $aPBZ
653 $aTommy Atkins
700 1 $aSIMOES, W. L.
700 1 $aMOUCO, M. A. do C.
700 1 $aSILVA, J. L. da
700 1 $aSILVA, J. S. da
700 1 $aMESQUITA, A. C.
773 $tResearch, Society and Development$gv. 9, n. 8, e348984894, 2020.
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