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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: |
05/02/2014 |
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Data da última atualização: |
17/05/2017 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
MATONYEI, T. K.; CHEPROT, R. K.; LIU, J.; PIÑEROS, M. A.; SHAFF, J. E.; GUDU, S.; WERE, B.; MAGALHAES, J. V.; KOCHIAN, L. V. |
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Afiliação: |
JURANDIR VIEIRA DE MAGALHAES, CNPMS. |
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Título: |
Physiological and molecular analysis of aluminum tolerance in selected Kenyan maize lines. |
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Ano de publicação: |
2014 |
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Fonte/Imprenta: |
Plant and Soil, Dordrecht, v. 377, p. 357-367, 2014. |
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DOI: |
10.1007/s11104-013-1976-6 |
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Idioma: |
Inglês |
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Conteúdo: |
Aims Aluminum (Al) toxicity is an important limitation to maize production in many tropical and sub-tropical acid soil areas. The aim of this study was to survey the variation in Al tolerance in a panel of maize lines adapted for Kenya and look for novel sources of Al tolerance. Methods 112 Kenyan maize accessions were phenotyped for Al tolerance in solution culture. Several Al tolerance-related parameters including relative net root growth (RNRG), root apex Al accumulation, Al-activated root organic acid exudation, and expression of the maize Al tolerance gene, ZmMATE1, were used to classify Kenyan maize accessions. Results Based on RNRG, 42 %, 28 %, and 30 % of the lines were classified as highly tolerant, moderately tolerant and sensitive, respectively. Tolerant accessions accumulated less Al in their root apices compared to sensitive lines. The Kenyan maize line, CON 5, and the Brazilian standard for tolerance, Cateto, exhibited the greatest Al tolerance based on RNRG, but CON 5 had only about 50 % of ZmMATE1 gene expression relative to Cateto. CON 5 also had low root apex Al content and high citrate exudation, suggesting that it may employ a citrate transporter other than ZmMATE1. Conclusions We identified a very Al tolerant Kenyan maize line whose Al tolerance may be based in part on a novel tolerance gene. The maize lines identified in this study are useful germplasm for the development of varieties suitable for agriculture on acid soils in Kenya. |
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Palavras-Chave: |
Toxicidade. |
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Thesagro: |
Alumínio. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02199naa a2200253 a 4500
001 1978688
005 2017-05-17
008 2014 bl uuuu u00u1 u #d
024 7 $a10.1007/s11104-013-1976-6$2DOI
100 1 $aMATONYEI, T. K.
245 $aPhysiological and molecular analysis of aluminum tolerance in selected Kenyan maize lines.$h[electronic resource]
260 $c2014
520 $aAims Aluminum (Al) toxicity is an important limitation to maize production in many tropical and sub-tropical acid soil areas. The aim of this study was to survey the variation in Al tolerance in a panel of maize lines adapted for Kenya and look for novel sources of Al tolerance. Methods 112 Kenyan maize accessions were phenotyped for Al tolerance in solution culture. Several Al tolerance-related parameters including relative net root growth (RNRG), root apex Al accumulation, Al-activated root organic acid exudation, and expression of the maize Al tolerance gene, ZmMATE1, were used to classify Kenyan maize accessions. Results Based on RNRG, 42 %, 28 %, and 30 % of the lines were classified as highly tolerant, moderately tolerant and sensitive, respectively. Tolerant accessions accumulated less Al in their root apices compared to sensitive lines. The Kenyan maize line, CON 5, and the Brazilian standard for tolerance, Cateto, exhibited the greatest Al tolerance based on RNRG, but CON 5 had only about 50 % of ZmMATE1 gene expression relative to Cateto. CON 5 also had low root apex Al content and high citrate exudation, suggesting that it may employ a citrate transporter other than ZmMATE1. Conclusions We identified a very Al tolerant Kenyan maize line whose Al tolerance may be based in part on a novel tolerance gene. The maize lines identified in this study are useful germplasm for the development of varieties suitable for agriculture on acid soils in Kenya.
650 $aAlumínio
653 $aToxicidade
700 1 $aCHEPROT, R. K.
700 1 $aLIU, J.
700 1 $aPIÑEROS, M. A.
700 1 $aSHAFF, J. E.
700 1 $aGUDU, S.
700 1 $aWERE, B.
700 1 $aMAGALHAES, J. V.
700 1 $aKOCHIAN, L. V.
773 $tPlant and Soil, Dordrecht$gv. 377, p. 357-367, 2014.
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Registro original: |
Embrapa Milho e Sorgo (CNPMS) |
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Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
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| Acesso ao texto completo restrito à biblioteca da Embrapa Solos. Para informações adicionais entre em contato com cnps.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Arroz e Feijão; Embrapa Solos. |
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Data corrente: |
14/11/2018 |
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Data da última atualização: |
14/12/2018 |
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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: |
RESENDE, M. F. de; BRASIL, T. F.; MADARI, B. E.; PEREIRA NETTO, A. D.; NOVOTNY, E. H. |
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Afiliação: |
MICHELE FABRI DE RESENDE, UFF; TAILA FIGUEREDO BRASIL, UFF; BEATA EMOKE MADARI, CNPAF; ANNIBAL DUARTE PEREIRA NETTO, UFF; ETELVINO HENRIQUE NOVOTNY, CNPS. |
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Título: |
Polycyclic aromatic hydrocarbons in biochar amended soils: long-term experiments in Brazilian tropical areas. |
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Ano de publicação: |
2018 |
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Fonte/Imprenta: |
Chemosphere, v. 200, p. 641-648, Jun. 2018. |
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ISSN: |
0045-6535 |
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DOI: |
10.1016/j.chemosphere.2018.02.139 |
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Idioma: |
Inglês |
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Conteúdo: |
The interest in charcoal for agricultural use (biochar) has sharply increased in recent years. However, biochar can contain groups of compounds such as polycyclic aromatic hydrocarbons (PAHs) that are considered persistent pollutants, and are formed concomitantly with biochar during its production by pyrolysis. Soil samples were collected in three experimental areas at different intervals (1, 3, 5 or 6 years) after the application of 16 Mg ha-1 of biochar. The total concentrations of PAHs; benzo[a]pyrene; and the estimated total cancer risk in biochar treated plots were larger than found in the control ones, but they decreased over time, equaling the control values after three years in the high C content soil (11.2 g C kg-1 soil), or after six years in the low C content soil (6.8 g C kg-1 soil). Nevertheless, the sum of PAH concentrations found in the biochar amended plots, in the range of 15.80-39.40 ng g-1, were around two orders of magnitude below the limits of prevention established by Brazilian legislation (8100 ng g-1) and some European regulations for soils (3000 ng g-1) and also lower than the observed in previous studies about biochar amended soils. Our results indicate that, under the conditions evaluated, the application of biochar to soil in the studied proportion (16 Mg ha-1, every six years) is safe concerning soil contamination by PAHs. |
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Thesagro: |
Carbono; Carvão; Contaminação; Solo. |
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Thesaurus NAL: |
Carbon; Charcoal; Factor analysis; Soil. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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Marc: |
LEADER 02186naa a2200289 a 4500
001 2100807
005 2018-12-14
008 2018 bl uuuu u00u1 u #d
022 $a0045-6535
024 7 $a10.1016/j.chemosphere.2018.02.139$2DOI
100 1 $aRESENDE, M. F. de
245 $aPolycyclic aromatic hydrocarbons in biochar amended soils$blong-term experiments in Brazilian tropical areas.$h[electronic resource]
260 $c2018
520 $aThe interest in charcoal for agricultural use (biochar) has sharply increased in recent years. However, biochar can contain groups of compounds such as polycyclic aromatic hydrocarbons (PAHs) that are considered persistent pollutants, and are formed concomitantly with biochar during its production by pyrolysis. Soil samples were collected in three experimental areas at different intervals (1, 3, 5 or 6 years) after the application of 16 Mg ha-1 of biochar. The total concentrations of PAHs; benzo[a]pyrene; and the estimated total cancer risk in biochar treated plots were larger than found in the control ones, but they decreased over time, equaling the control values after three years in the high C content soil (11.2 g C kg-1 soil), or after six years in the low C content soil (6.8 g C kg-1 soil). Nevertheless, the sum of PAH concentrations found in the biochar amended plots, in the range of 15.80-39.40 ng g-1, were around two orders of magnitude below the limits of prevention established by Brazilian legislation (8100 ng g-1) and some European regulations for soils (3000 ng g-1) and also lower than the observed in previous studies about biochar amended soils. Our results indicate that, under the conditions evaluated, the application of biochar to soil in the studied proportion (16 Mg ha-1, every six years) is safe concerning soil contamination by PAHs.
650 $aCarbon
650 $aCharcoal
650 $aFactor analysis
650 $aSoil
650 $aCarbono
650 $aCarvão
650 $aContaminação
650 $aSolo
700 1 $aBRASIL, T. F.
700 1 $aMADARI, B. E.
700 1 $aPEREIRA NETTO, A. D.
700 1 $aNOVOTNY, E. H.
773 $tChemosphere$gv. 200, p. 641-648, Jun. 2018.
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Embrapa Arroz e Feijão (CNPAF) |
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