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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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Registro Completo
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Biblioteca(s): |
Embrapa Mandioca e Fruticultura; Embrapa Trigo. |
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Data corrente: |
21/03/2023 |
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Data da última atualização: |
04/04/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 4 |
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Autoria: |
CHABI-JESUS, C.; RAMOS-GONZÁLEZ, P. L.; TASSI, A. D.; PEREIRA, L. R.; BASTIANEL, M.; LAU, D.; CANALE, M. C.; HARAKAVA, R.; NOVELLI, V. M.; KITAJIMA, E. W. N.; ASTUA, J. de F. |
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Afiliação: |
CAMILA CHABI-JESUS, ESCOLA SUPERIOR DE AGRICULTURA LUIZ DE QUEIROZ; PEDRO LUIS RAMOS-GONZÁLEZ, INSTITUTO BIOLÓGICO; ALINE DANIELE TASSI, INSTITUTO BIOLÓGICO; LAURA ROSSETTO PEREIRA, INSTITUTO BIOLÓGICO; MARINÊS BASTIANEL, CENTRO DE CITRICULTURA SYLVIO MOREIRA; DOUGLAS LAU, CNPT; MARIA CRISTINA CANALE, EMPRESA DE PESQUISA AGROPECUÁRIA E EXTENSÃO RURAL DE SANTA CATARINA; RICARDO HARAKAVA, INSTITUTO BIOLÓGICO; VALDENICE MOREIRA NOVELLI, CENTRO DE CITRICULTURA SYLVIO MOREIRA; ELLIOT WATA NABE KITAJIMA, ESCOLA SUPERIOR DE AGRICULTURA LUIZ DE QUEIROZ; JULIANA DE FREITAS ASTUA, CNPMF. |
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Título: |
Citrus bright spot virus: a new dichorhavirus, transmitted by Brevipalpus azores, Causing Citrus Leprosis Disease in Brazil. |
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Ano de publicação: |
2023 |
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Fonte/Imprenta: |
Plants, v.12, n.6 p.1371. 2023. |
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DOI: |
10.3390/plants12061371 |
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Idioma: |
Inglês |
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Conteúdo: |
Citrus leprosis (CL) is the main viral disease affecting the Brazilian citriculture. Sweet orange (Citrus sinensis L. Osbeck) trees affected by CL were identified in small orchards in Southern Brazil. Rod-like particles of 40 × 100 nm and electron lucent viroplasm were observed in the nucleus of infected cells in symptomatic tissues. RNA extracts from three plants, which proved negative by RT-PCR for known CL-causing viruses, were analyzed by high throughput sequencing and Sanger sequencing after RT-PCR. The genomes of bi-segmented ss(?)RNA viruses, with ORFs in a typical organization of members of the genus Dichorhavirus, were recovered. These genomes shared 98?99% nt sequence identity among them but <73% with those of known dichorhavirids, a value below the threshold for new species demarcation within that genus. Phylogenetically, the three haplotypes of the new virus called citrus bright spot virus (CiBSV) are clustered with citrus leprosis virus N, which is a dichorhavirus transmitted by Brevipalpus phoenicis sensu stricto. In CiBSV-infected citrus plants, B. papayensis and B. azores were found, but the virus could only be transmitted to Arabidopsis plants by B. azores. The study provides the first evidence of the role of B. azores as a viral vector and supports the assignment of CiBSV to the tentative new species Dichorhavirus australis. |
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Thesagro: |
Fruta Cítrica; Vírus. |
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Thesaurus NAL: |
Mononegavirales; Rhabdoviridae; Vector-borne diseases. |
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Categoria do assunto: |
G Melhoramento Genético |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1152548/1/plants-12-01371.pdf
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Marc: |
LEADER 02279naa a2200313 a 4500
001 2152990
005 2023-04-04
008 2023 bl uuuu u00u1 u #d
024 7 $a10.3390/plants12061371$2DOI
100 1 $aCHABI-JESUS, C.
245 $aCitrus bright spot virus$ba new dichorhavirus, transmitted by Brevipalpus azores, Causing Citrus Leprosis Disease in Brazil.$h[electronic resource]
260 $c2023
520 $aCitrus leprosis (CL) is the main viral disease affecting the Brazilian citriculture. Sweet orange (Citrus sinensis L. Osbeck) trees affected by CL were identified in small orchards in Southern Brazil. Rod-like particles of 40 × 100 nm and electron lucent viroplasm were observed in the nucleus of infected cells in symptomatic tissues. RNA extracts from three plants, which proved negative by RT-PCR for known CL-causing viruses, were analyzed by high throughput sequencing and Sanger sequencing after RT-PCR. The genomes of bi-segmented ss(?)RNA viruses, with ORFs in a typical organization of members of the genus Dichorhavirus, were recovered. These genomes shared 98?99% nt sequence identity among them but <73% with those of known dichorhavirids, a value below the threshold for new species demarcation within that genus. Phylogenetically, the three haplotypes of the new virus called citrus bright spot virus (CiBSV) are clustered with citrus leprosis virus N, which is a dichorhavirus transmitted by Brevipalpus phoenicis sensu stricto. In CiBSV-infected citrus plants, B. papayensis and B. azores were found, but the virus could only be transmitted to Arabidopsis plants by B. azores. The study provides the first evidence of the role of B. azores as a viral vector and supports the assignment of CiBSV to the tentative new species Dichorhavirus australis.
650 $aMononegavirales
650 $aRhabdoviridae
650 $aVector-borne diseases
650 $aFruta Cítrica
650 $aVírus
700 1 $aRAMOS-GONZÁLEZ, P. L.
700 1 $aTASSI, A. D.
700 1 $aPEREIRA, L. R.
700 1 $aBASTIANEL, M.
700 1 $aLAU, D.
700 1 $aCANALE, M. C.
700 1 $aHARAKAVA, R.
700 1 $aNOVELLI, V. M.
700 1 $aKITAJIMA, E. W. N.
700 1 $aASTUA, J. de F.
773 $tPlants$gv.12, n.6 p.1371. 2023.
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Embrapa Trigo (CNPT) |
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