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| Acesso ao texto completo restrito à biblioteca da Embrapa Arroz e Feijão. Para informações adicionais entre em contato com cnpaf.biblioteca@embrapa.br. |
Registro Completo |
Biblioteca(s): |
Embrapa Arroz e Feijão. |
Data corrente: |
25/07/2012 |
Data da última atualização: |
03/08/2012 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
FAGERIA, N. K.; BALIGAR, V. C.; MELO, L. C.; OLIVEIRA, J. P. de. |
Afiliação: |
NAND KUMAR FAGERIA, CNPAF; V. C. BALIGAR, USDA; LEONARDO CUNHA MELO, CNPAF; JAISON PEREIRA DE OLIVEIRA, CNPAF. |
Título: |
Differential soil acidity tolerance of dry bean genotypes. |
Ano de publicação: |
2012 |
Fonte/Imprenta: |
Communications in Soil Science and Plant Analysis, New York, v. 43, n. 11, p. 1523-1531, June 2012. |
Idioma: |
Inglês |
Conteúdo: |
Soil acidity is a major yield-limiting factors for bean production in the tropical regions. Using soil acidity?tolerant genotypes is an important strategy in improving bean yields and reducing cost of production. A greenhouse experiment was conducted with the objective of evaluating 20 dry bean genotypes for their tolerance to soil acidity constraints. An Inceptisol soil was amended with dolomitic lime (2 g dolomitic lime kg?1 soil) to achieve low acidity (pH = 5.9) and without lime (zero lime kg?1 soil,) to achieve high acidity (pH = 4.8) levels to evaluate bean genotypes. At both acidity levels, genotypes differed significantly in shoot dry weight and grain yield. Shoot dry weight and grain yield were significantly decreased at the high acidity level compared to the low acidity level. Grain yield was more sensitive to soil acidity than shoot dry weight. Hence, grain yield was used in determination of tolerance index (GTI) to differentiate the range of soil acidity tolerance among bean genotypes. Based on a GTI value, 55% of the genotypes were classified as tolerant, 40% classified as moderately tolerant, and the remaining were grouped as susceptible to soil acidity. The genotype CNFC 10410 was most tolerant and genotype CNFP 10120 was most susceptible to soil acidity. Number of pods and grain harvest index were significantly and positively associated with grain yield. The improvement in grain yield in low acidity may be related to reduction of toxic levels of soil aluminum (Al3+) and hydrogen (H+) ions by lime addition. At harvest, soil extractable phosphorus (P) and potassium (K) increased with the reduction of soil acidity, and this might have contributed to the better nutrition of beans and lead to higher growth. MenosSoil acidity is a major yield-limiting factors for bean production in the tropical regions. Using soil acidity?tolerant genotypes is an important strategy in improving bean yields and reducing cost of production. A greenhouse experiment was conducted with the objective of evaluating 20 dry bean genotypes for their tolerance to soil acidity constraints. An Inceptisol soil was amended with dolomitic lime (2 g dolomitic lime kg?1 soil) to achieve low acidity (pH = 5.9) and without lime (zero lime kg?1 soil,) to achieve high acidity (pH = 4.8) levels to evaluate bean genotypes. At both acidity levels, genotypes differed significantly in shoot dry weight and grain yield. Shoot dry weight and grain yield were significantly decreased at the high acidity level compared to the low acidity level. Grain yield was more sensitive to soil acidity than shoot dry weight. Hence, grain yield was used in determination of tolerance index (GTI) to differentiate the range of soil acidity tolerance among bean genotypes. Based on a GTI value, 55% of the genotypes were classified as tolerant, 40% classified as moderately tolerant, and the remaining were grouped as susceptible to soil acidity. The genotype CNFC 10410 was most tolerant and genotype CNFP 10120 was most susceptible to soil acidity. Number of pods and grain harvest index were significantly and positively associated with grain yield. The improvement in grain yield in low acidity may be related to reduction of toxic levels of soil aluminum... Mostrar Tudo |
Palavras-Chave: |
Grain harvest index; Shoot dry weight. |
Thesagro: |
Acidez do solo; Feijão; Phaseolus vulgaris. |
Thesaurus Nal: |
Beans; Grain yield. |
Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
Marc: |
LEADER 02432naa a2200241 a 4500 001 1929220 005 2012-08-03 008 2012 bl uuuu u00u1 u #d 100 1 $aFAGERIA, N. K. 245 $aDifferential soil acidity tolerance of dry bean genotypes. 260 $c2012 520 $aSoil acidity is a major yield-limiting factors for bean production in the tropical regions. Using soil acidity?tolerant genotypes is an important strategy in improving bean yields and reducing cost of production. A greenhouse experiment was conducted with the objective of evaluating 20 dry bean genotypes for their tolerance to soil acidity constraints. An Inceptisol soil was amended with dolomitic lime (2 g dolomitic lime kg?1 soil) to achieve low acidity (pH = 5.9) and without lime (zero lime kg?1 soil,) to achieve high acidity (pH = 4.8) levels to evaluate bean genotypes. At both acidity levels, genotypes differed significantly in shoot dry weight and grain yield. Shoot dry weight and grain yield were significantly decreased at the high acidity level compared to the low acidity level. Grain yield was more sensitive to soil acidity than shoot dry weight. Hence, grain yield was used in determination of tolerance index (GTI) to differentiate the range of soil acidity tolerance among bean genotypes. Based on a GTI value, 55% of the genotypes were classified as tolerant, 40% classified as moderately tolerant, and the remaining were grouped as susceptible to soil acidity. The genotype CNFC 10410 was most tolerant and genotype CNFP 10120 was most susceptible to soil acidity. Number of pods and grain harvest index were significantly and positively associated with grain yield. The improvement in grain yield in low acidity may be related to reduction of toxic levels of soil aluminum (Al3+) and hydrogen (H+) ions by lime addition. At harvest, soil extractable phosphorus (P) and potassium (K) increased with the reduction of soil acidity, and this might have contributed to the better nutrition of beans and lead to higher growth. 650 $aBeans 650 $aGrain yield 650 $aAcidez do solo 650 $aFeijão 650 $aPhaseolus vulgaris 653 $aGrain harvest index 653 $aShoot dry weight 700 1 $aBALIGAR, V. C. 700 1 $aMELO, L. C. 700 1 $aOLIVEIRA, J. P. de 773 $tCommunications in Soil Science and Plant Analysis, New York$gv. 43, n. 11, p. 1523-1531, June 2012.
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Embrapa Arroz e Feijão (CNPAF) |
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| Acesso ao texto completo restrito à biblioteca da Embrapa Caprinos e Ovinos. Para informações adicionais entre em contato com cnpc.biblioteca@embrapa.br. |
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Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
Data corrente: |
04/10/2011 |
Data da última atualização: |
23/09/2019 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
A - 1 |
Autoria: |
SALLES, H. O.; VASCONCELOS, I. M.; SANTOS, L. F. L.; OLIVEIRA, H. D.; COSTA, P. P. C.; NASCIMENTO, N. R. F.; SANTOS, C. F.; SOUSA, D. F.; JORGE, A. R. C.; MENEZES, D. B.; MONTEIRO, H. S. A.; GONDIM, D. M. F.; OLIVEIRA, J. T. A. |
Afiliação: |
HEVILA OLIVEIRA SALLES FIGUEIREDO, CNPC; Universidade Federal do Ceará (UFC), Fortaleza, CE.; Universidade Estadual do Ceará (UECe) - Fortaleza, CE.; UECe; UECe; UECe; UECe; UFC, Fortaleza, CE.; UFC; UFC; UFC; UFC; UFC. |
Título: |
Towards a better understanding of Ipomoea asarifolia toxicity: evidence of the involvement of a leaf lectin. |
Ano de publicação: |
2011 |
Fonte/Imprenta: |
Toxicon, v. 58, p. 502-508, 2011. |
DOI: |
10.1016/j.toxicon.2011.08.011 |
Idioma: |
Inglês |
Conteúdo: |
Abstract: Natural intoxication of livestock by ingestion of Ipomoea asarifolia leaves has been reported to occur widely in Brazil. Previous studies carried out by our research group provided strong evidence that a lectin could be involved with the toxic properties of I. asarifolia.To reinforce this hypothesis, a lectin-enriched fraction (LEF) was isolated from I. asarifolia leaves and its toxic effects were assessed. Leaves of I. asarifolia were excised from plants growing widely in the ?eld, mechanically wounded and maintained in a chamber at 25 3 C for 72 h in the dark, under near 100% relative humidity. The leaf proteins were extracted, ammonium sulfate precipitated, chromatographed on DEAE-cellulose and Phenyl-Sepharose to produce LEF that under SDS?PAGE showed a molecular mass of 44.0 kDa and after N-terminal amino acid analysis a primary sequence composed of AGYTPVLDIGAEVLAAGEPY. The in vivo toxicity of LEF assessed by intraorbital injection in mice showed induced severe uncoordinated movements without death. LEF reduced the muscular contraction in a dose depend way and at 29.8 mg/mL (CE50) it produces 50% inhibition of contraction, suggesting that LEF blunts autonomic neurotransmission. Isolated rat kidneys were perfused with LEF and no effects on the perfusion pressure or renal vascular resistance were observed, but urinary ?ow and glomerular ?ltration rate increased. Moreover, the percentage of tubular transport of Naþ,Kþ and Cl decreased. Histological examination of the kidneys perfused with LEF exhibited little alterations. These toxic effects observed above were concomitant with the increase of LEF hemag-glutination activity, which strongly suggest that one of the toxic principles of I. asarifolia is a lectin present in its leaves. MenosAbstract: Natural intoxication of livestock by ingestion of Ipomoea asarifolia leaves has been reported to occur widely in Brazil. Previous studies carried out by our research group provided strong evidence that a lectin could be involved with the toxic properties of I. asarifolia.To reinforce this hypothesis, a lectin-enriched fraction (LEF) was isolated from I. asarifolia leaves and its toxic effects were assessed. Leaves of I. asarifolia were excised from plants growing widely in the ?eld, mechanically wounded and maintained in a chamber at 25 3 C for 72 h in the dark, under near 100% relative humidity. The leaf proteins were extracted, ammonium sulfate precipitated, chromatographed on DEAE-cellulose and Phenyl-Sepharose to produce LEF that under SDS?PAGE showed a molecular mass of 44.0 kDa and after N-terminal amino acid analysis a primary sequence composed of AGYTPVLDIGAEVLAAGEPY. The in vivo toxicity of LEF assessed by intraorbital injection in mice showed induced severe uncoordinated movements without death. LEF reduced the muscular contraction in a dose depend way and at 29.8 mg/mL (CE50) it produces 50% inhibition of contraction, suggesting that LEF blunts autonomic neurotransmission. Isolated rat kidneys were perfused with LEF and no effects on the perfusion pressure or renal vascular resistance were observed, but urinary ?ow and glomerular ?ltration rate increased. Moreover, the percentage of tubular transport of Naþ,Kþ and Cl decreased. Histological examination o... Mostrar Tudo |
Palavras-Chave: |
Ipomoea asarifolia; Lectin; Sulato de amônia. |
Thesagro: |
Erva daninha; Lectina; Planta tóxica; Salsa; Toxidez. |
Thesaurus NAL: |
toxicity. |
Categoria do assunto: |
-- |
Marc: |
LEADER 02855naa a2200385 a 4500 001 1902176 005 2019-09-23 008 2011 bl uuuu u00u1 u #d 024 7 $a10.1016/j.toxicon.2011.08.011$2DOI 100 1 $aSALLES, H. O. 245 $aTowards a better understanding of Ipomoea asarifolia toxicity$bevidence of the involvement of a leaf lectin.$h[electronic resource] 260 $c2011 520 $aAbstract: Natural intoxication of livestock by ingestion of Ipomoea asarifolia leaves has been reported to occur widely in Brazil. Previous studies carried out by our research group provided strong evidence that a lectin could be involved with the toxic properties of I. asarifolia.To reinforce this hypothesis, a lectin-enriched fraction (LEF) was isolated from I. asarifolia leaves and its toxic effects were assessed. Leaves of I. asarifolia were excised from plants growing widely in the ?eld, mechanically wounded and maintained in a chamber at 25 3 C for 72 h in the dark, under near 100% relative humidity. The leaf proteins were extracted, ammonium sulfate precipitated, chromatographed on DEAE-cellulose and Phenyl-Sepharose to produce LEF that under SDS?PAGE showed a molecular mass of 44.0 kDa and after N-terminal amino acid analysis a primary sequence composed of AGYTPVLDIGAEVLAAGEPY. The in vivo toxicity of LEF assessed by intraorbital injection in mice showed induced severe uncoordinated movements without death. LEF reduced the muscular contraction in a dose depend way and at 29.8 mg/mL (CE50) it produces 50% inhibition of contraction, suggesting that LEF blunts autonomic neurotransmission. Isolated rat kidneys were perfused with LEF and no effects on the perfusion pressure or renal vascular resistance were observed, but urinary ?ow and glomerular ?ltration rate increased. Moreover, the percentage of tubular transport of Naþ,Kþ and Cl decreased. Histological examination of the kidneys perfused with LEF exhibited little alterations. These toxic effects observed above were concomitant with the increase of LEF hemag-glutination activity, which strongly suggest that one of the toxic principles of I. asarifolia is a lectin present in its leaves. 650 $atoxicity 650 $aErva daninha 650 $aLectina 650 $aPlanta tóxica 650 $aSalsa 650 $aToxidez 653 $aIpomoea asarifolia 653 $aLectin 653 $aSulato de amônia 700 1 $aVASCONCELOS, I. M. 700 1 $aSANTOS, L. F. L. 700 1 $aOLIVEIRA, H. D. 700 1 $aCOSTA, P. P. C. 700 1 $aNASCIMENTO, N. R. F. 700 1 $aSANTOS, C. F. 700 1 $aSOUSA, D. F. 700 1 $aJORGE, A. R. C. 700 1 $aMENEZES, D. B. 700 1 $aMONTEIRO, H. S. A. 700 1 $aGONDIM, D. M. F. 700 1 $aOLIVEIRA, J. T. A. 773 $tToxicon$gv. 58, p. 502-508, 2011.
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