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| 80. |  | SOUSA, A. R. de; BATISTA, R. B.; SILVA, A. B. da; OLIVEIRA, M. de; RESENDE, M. Phagioclasios calco-sodicos de solos do Nordeste: determinacao por difracao de raios x e implicacoes na sodificacao. In: CONGRESSO BRASILEIRO DE CIENCIA DO SOLO, 25., 1995, Vicosa, MG. O solo nos grandes dominios morfoclimaticos do Brasil e o desenvolvimento sustentado: resumos expandidos. Vicosa: SBCS-UFV, 1995. v.1 p. 271-273.| Biblioteca(s): Embrapa Semiárido. |
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| Registros recuperados : 304 | |
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Registro Completo
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Biblioteca(s): |
Embrapa Milho e Sorgo. |
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Data corrente: |
06/02/2019 |
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Data da última atualização: |
07/02/2019 |
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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: |
MARQUES, D. M.; VERONEZE JÚNIOR, V.; SILVA, A. B. da; MANTOVANI, J. R.; MAGALHAES, P. C.; SOUZA, T. C. de. |
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Afiliação: |
Daniele Maria Marques, Universidade Federal de Alfenas; Valdir Veroneze Júnior, Universidade Federal de Alfenas; Adriano Bortolotti da Silva, Universidade José do Rosário Vellano; José Ricardo Mantovani, Universidade José do Rosário Vellano; PAULO CESAR MAGALHAES, CNPMS; Thiago Corrêa de Souza, Universidade Federal de Alfenas. |
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Título: |
Copper toxicity on photosynthetic responses and root morphology of Hymenaea courbaril L. (Caesalpinioideae). |
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Ano de publicação: |
2018 |
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Fonte/Imprenta: |
Water, Air and Soil Pollution, v. 229, n. 138, p. 1-14, 2018. |
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DOI: |
10.1007/s11270-018-3769-2 |
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Idioma: |
Inglês |
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Conteúdo: |
Copper (Cu) is a micronutrient essential for plant development. However, in excess, it is toxic to plants and may cause various physiological and morphological changes. The study of the growth of plants exposed to excess Cu is important for the development of phytoremediation programs and for understanding the mechanisms involved in the tolerance of this metal. In this context, the objective of this research was to evaluate the effect of excess copper on photosynthetic responses and root morphology ofHymenaeacourbaril L. Biometric measurements, gas exchange, root morphology, and Cu content in tissues and indices (TI and TF) were assessed, involving metal content and biomass.Uptoaconcentrationof200mgkg−1,Cufavored growth, gas exchange, and root morphology of the plants under study. At a higher concentration (800 mg kg−1) in the soil, it affected plant growth and caused a decrease in photosynthetic rate. Biochemical limitations in photosynthesis were observed, as well as lower maximum net photosynthetic rate (Amax), respiration rate in the dark (Rd), light compensation point (LCP), light saturation point (LSP), and apparent quantum yield (α), when exposed toexcess Cu. Root length, surface area, mean diameter, root volume, dry biomass, andspecificrootlengthdecreasedwithhighCuconcentrationsinthe soil.Cuwasaccumulatedintheroots asa mechanism of tolerance to the excess of this metal in order to preserve the most metabolically active tissues presentintheleaves.Ataconcentrationof800mgkg−1, copper also caused inhibition of the root system. Plants ofH.courbarilshowedtolerancetoexcessCuinthesoil and can be indicated for the recovery of areas contaminated with this metal. MenosCopper (Cu) is a micronutrient essential for plant development. However, in excess, it is toxic to plants and may cause various physiological and morphological changes. The study of the growth of plants exposed to excess Cu is important for the development of phytoremediation programs and for understanding the mechanisms involved in the tolerance of this metal. In this context, the objective of this research was to evaluate the effect of excess copper on photosynthetic responses and root morphology ofHymenaeacourbaril L. Biometric measurements, gas exchange, root morphology, and Cu content in tissues and indices (TI and TF) were assessed, involving metal content and biomass.Uptoaconcentrationof200mgkg−1,Cufavored growth, gas exchange, and root morphology of the plants under study. At a higher concentration (800 mg kg−1) in the soil, it affected plant growth and caused a decrease in photosynthetic rate. Biochemical limitations in photosynthesis were observed, as well as lower maximum net photosynthetic rate (Amax), respiration rate in the dark (Rd), light compensation point (LCP), light saturation point (LSP), and apparent quantum yield (α), when exposed toexcess Cu. Root length, surface area, mean diameter, root volume, dry biomass, andspecificrootlengthdecreasedwithhighCuconcentrationsinthe soil.Cuwasaccumulatedintheroots asa mechanism of tolerance to the excess of this metal in order to preserve the most metabolically active tissues presentintheleaves.Atac... Mostrar Tudo |
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Palavras-Chave: |
Toxicidade; Troca de gás. |
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Thesagro: |
Cobre; Metal Pesado; Raiz. |
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Thesaurus NAL: |
Phytoremediation. |
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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/192182/1/Copper-toxicity.pdf
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Marc: |
LEADER 02504naa a2200265 a 4500
001 2105592
005 2019-02-07
008 2018 bl uuuu u00u1 u #d
024 7 $a10.1007/s11270-018-3769-2$2DOI
100 1 $aMARQUES, D. M.
245 $aCopper toxicity on photosynthetic responses and root morphology of Hymenaea courbaril L. (Caesalpinioideae).$h[electronic resource]
260 $c2018
520 $aCopper (Cu) is a micronutrient essential for plant development. However, in excess, it is toxic to plants and may cause various physiological and morphological changes. The study of the growth of plants exposed to excess Cu is important for the development of phytoremediation programs and for understanding the mechanisms involved in the tolerance of this metal. In this context, the objective of this research was to evaluate the effect of excess copper on photosynthetic responses and root morphology ofHymenaeacourbaril L. Biometric measurements, gas exchange, root morphology, and Cu content in tissues and indices (TI and TF) were assessed, involving metal content and biomass.Uptoaconcentrationof200mgkg−1,Cufavored growth, gas exchange, and root morphology of the plants under study. At a higher concentration (800 mg kg−1) in the soil, it affected plant growth and caused a decrease in photosynthetic rate. Biochemical limitations in photosynthesis were observed, as well as lower maximum net photosynthetic rate (Amax), respiration rate in the dark (Rd), light compensation point (LCP), light saturation point (LSP), and apparent quantum yield (α), when exposed toexcess Cu. Root length, surface area, mean diameter, root volume, dry biomass, andspecificrootlengthdecreasedwithhighCuconcentrationsinthe soil.Cuwasaccumulatedintheroots asa mechanism of tolerance to the excess of this metal in order to preserve the most metabolically active tissues presentintheleaves.Ataconcentrationof800mgkg−1, copper also caused inhibition of the root system. Plants ofH.courbarilshowedtolerancetoexcessCuinthesoil and can be indicated for the recovery of areas contaminated with this metal.
650 $aPhytoremediation
650 $aCobre
650 $aMetal Pesado
650 $aRaiz
653 $aToxicidade
653 $aTroca de gás
700 1 $aVERONEZE JÚNIOR, V.
700 1 $aSILVA, A. B. da
700 1 $aMANTOVANI, J. R.
700 1 $aMAGALHAES, P. C.
700 1 $aSOUZA, T. C. de
773 $tWater, Air and Soil Pollution$gv. 229, n. 138, p. 1-14, 2018.
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Embrapa Milho e Sorgo (CNPMS) |
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