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Registro Completo |
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Biblioteca(s): |
Embrapa Clima Temperado. |
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Data corrente: |
25/02/2013 |
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Data da última atualização: |
25/02/2013 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
ADAMSKI, J. M.; DANIELOSKI, R.; DEUNER, S.; BRAGA, E. J. B.; CASTRO, L. A. S. de; PETERS, J. A. |
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Afiliação: |
JANETE M. ADAMSKI; RODRIGO DANIELOSKI; SIDNEI DEUNER, CPAC; EUGENIA J. B. BRAGA; LUIS ANTONIO SUITA DE CASTRO, CPACT; JOSE A. PETERS. |
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Título: |
Responses to excess iron in sweet potato: impacts on growth, enzyme activities, mineral concentrations, and anatomy. |
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Ano de publicação: |
2012 |
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Fonte/Imprenta: |
Acta Physiologiae Plantarum, v. 34, n. 5, p. 1827-1836, September 2012. |
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ISSN: |
0137-5881 |
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DOI: |
10.1007/s11738-012-0981-3 |
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Idioma: |
Português |
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Conteúdo: |
This study aimed to evaluate the effects of different iron concentrations on growth characteristics, antioxidant enzyme activities, nutrient absorption, and anatomical changes in sweet potato (Ipomoea batatas L.). To accomplish this, seedlings from apical branches of plants that had already been established in the greenhouse were rooted in a hydroponic sponge and then transplanted into a hydroponic system intermittently for 2 weeks and irrigated with nutrient solutions containing iron (ferric-EDTA) at concentrations of 0.45, 0.9, 4.5, and 9.0 mmol L?1. Height, leaf area, and total biomass were significantly reduced at iron concentrations of 4.5 and 9.0 mmol L?1. The iron concentrations in the established leaves and those that developed after the solution supplementation increased significantly. The amounts of other nutrients were also affected, with manganese showing the most significant decrease. The activities of the antioxidant enzymes, superoxide dismutase, and ascorbate peroxidase increased in plants grown in the 9.0 mmol L?1 iron solution. At this concentration, however, the stomatal densities were reduced on the abaxial surfaces of the leaves, although the stomatal diameters increased. The ultrastructures of the radical cells showed mitochondrial impairment at high iron concentrations; however, the chloroplast structures remained unaffected. |
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Palavras-Chave: |
Estresse; Ferric-EDTA; Ipomoea batatas L; Nutrientes. |
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Thesagro: |
Batata; Biomassa; Ferro. |
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Thesaurus Nal: |
stomata. |
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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/77188/1/12-Artigo-Peters-Ciencias-Agrarias-A2.pdf
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Marc: |
LEADER 02242naa a2200301 a 4500
001 1950801
005 2013-02-25
008 2012 bl uuuu u00u1 u #d
022 $a0137-5881
024 7 $a10.1007/s11738-012-0981-3$2DOI
100 1 $aADAMSKI, J. M.
245 $aResponses to excess iron in sweet potato$bimpacts on growth, enzyme activities, mineral concentrations, and anatomy.$h[electronic resource]
260 $c2012
520 $aThis study aimed to evaluate the effects of different iron concentrations on growth characteristics, antioxidant enzyme activities, nutrient absorption, and anatomical changes in sweet potato (Ipomoea batatas L.). To accomplish this, seedlings from apical branches of plants that had already been established in the greenhouse were rooted in a hydroponic sponge and then transplanted into a hydroponic system intermittently for 2 weeks and irrigated with nutrient solutions containing iron (ferric-EDTA) at concentrations of 0.45, 0.9, 4.5, and 9.0 mmol L?1. Height, leaf area, and total biomass were significantly reduced at iron concentrations of 4.5 and 9.0 mmol L?1. The iron concentrations in the established leaves and those that developed after the solution supplementation increased significantly. The amounts of other nutrients were also affected, with manganese showing the most significant decrease. The activities of the antioxidant enzymes, superoxide dismutase, and ascorbate peroxidase increased in plants grown in the 9.0 mmol L?1 iron solution. At this concentration, however, the stomatal densities were reduced on the abaxial surfaces of the leaves, although the stomatal diameters increased. The ultrastructures of the radical cells showed mitochondrial impairment at high iron concentrations; however, the chloroplast structures remained unaffected.
650 $astomata
650 $aBatata
650 $aBiomassa
650 $aFerro
653 $aEstresse
653 $aFerric-EDTA
653 $aIpomoea batatas L
653 $aNutrientes
700 1 $aDANIELOSKI, R.
700 1 $aDEUNER, S.
700 1 $aBRAGA, E. J. B.
700 1 $aCASTRO, L. A. S. de
700 1 $aPETERS, J. A.
773 $tActa Physiologiae Plantarum$gv. 34, n. 5, p. 1827-1836, September 2012.
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Registro original: |
Embrapa Clima Temperado (CPACT) |
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