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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. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Solos. |
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Data corrente: |
17/10/2016 |
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Data da última atualização: |
10/11/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
AGUIAR, N. O.; MEDICI, L. O.; OLIVARES, F. L.; DOBBSS, L. B.; TORRES-NETTO, A.; SILVA, S. F.; NOVOTNY, E. H.; CANELLAS, L. P. |
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Afiliação: |
N. O. AGUIAR, UENF; L. O. MEDICI, UFRRJ; F. L. OLIVARES, UENF; L. B. DOBBSS, UVV; A. TORRES-NETTO, UENF; S. F. SILVA, UENF; ETELVINO HENRIQUE NOVOTNY, CNPS; L. P. CANELLAS, UENF. |
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Título: |
Metabolic profile and antioxidant responses during drought stress recovery in sugarcane treated with humic acids and endophytic diazotrophic bacteria. |
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Ano de publicação: |
2016 |
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Fonte/Imprenta: |
Annals of Applied Biology, v. 168, n. 2, p. 203-213, Mar. 2016. |
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DOI: |
https://doi.org/10.1111/aab.12256 |
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Idioma: |
Inglês |
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Conteúdo: |
Water deficit is the major yield-limiting factor for sugarcane crop production that can be enhanced by inoculating with plant growth promoting bacteria (PGPB) combined with humic substances. The aim of this work was to examine changes to the metabolic profile and antioxidant enzyme activity of sugarcane treated with PGPB and humic acid (HA) after drought and then rehydration. The drought was imposed by withholding irrigation for 21 days thereby measuring enzyme activity, metabolic profile and photosynthetic rate 1 week after rehydratation. Growth of plants treated with HA, PGPB and with both treatments combined (PGPB+HA) was higher than control plants. The antioxidant enzymes superoxide dismutase (SOD), catalase (CAT) and ascorbate peroxidase (APX) activities remained higher after rehydration only in plants treated with HA. Plants treated with HA and PGPB+HA exhibited increased transpiration, stomatal conductance and net photosynthesis than plants treated with PGPB. The PGPB-treated plants exhibited drought resistance that resembled 'delayed stress onset', which is a new term for preserving water in the plants tissues. Water preservation in plants treated with PGPB was corroborated by higher relative water content (RWC) than control plants at the end of the drought period. Plants treated with HA+PGPB exhibited the highest water potential after rehydration and high RWC. Osmotic adjustment in the other treatments (control, HA and PGPB) was indicated by a new pattern of metabolic response after rehydration, including generally enhanced carbohydrates and proteins and specific changes induced by HA-enhancing aromatic compounds, whereas PGPB exhibited enhanced fatty acids and other aliphatic H species. Humic acids assist with drought stress recovery by inducing antioxidant enzyme activity whereas PGPB induced preservation of leaf water potential and RWC by closing stomata efficiently, resulting in plant water preservation. MenosWater deficit is the major yield-limiting factor for sugarcane crop production that can be enhanced by inoculating with plant growth promoting bacteria (PGPB) combined with humic substances. The aim of this work was to examine changes to the metabolic profile and antioxidant enzyme activity of sugarcane treated with PGPB and humic acid (HA) after drought and then rehydration. The drought was imposed by withholding irrigation for 21 days thereby measuring enzyme activity, metabolic profile and photosynthetic rate 1 week after rehydratation. Growth of plants treated with HA, PGPB and with both treatments combined (PGPB+HA) was higher than control plants. The antioxidant enzymes superoxide dismutase (SOD), catalase (CAT) and ascorbate peroxidase (APX) activities remained higher after rehydration only in plants treated with HA. Plants treated with HA and PGPB+HA exhibited increased transpiration, stomatal conductance and net photosynthesis than plants treated with PGPB. The PGPB-treated plants exhibited drought resistance that resembled 'delayed stress onset', which is a new term for preserving water in the plants tissues. Water preservation in plants treated with PGPB was corroborated by higher relative water content (RWC) than control plants at the end of the drought period. Plants treated with HA+PGPB exhibited the highest water potential after rehydration and high RWC. Osmotic adjustment in the other treatments (control, HA and PGPB) was indicated by a new pattern of metabol... Mostrar Tudo |
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Palavras-Chave: |
Alívio de estresse hídrico; Bactéria fixadora de nitrogênio; Eficiência do uso da água; Substâncias húmicas. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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Marc: |
LEADER 02859naa a2200265 a 4500
001 2054728
005 2021-11-10
008 2016 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1111/aab.12256$2DOI
100 1 $aAGUIAR, N. O.
245 $aMetabolic profile and antioxidant responses during drought stress recovery in sugarcane treated with humic acids and endophytic diazotrophic bacteria.$h[electronic resource]
260 $c2016
520 $aWater deficit is the major yield-limiting factor for sugarcane crop production that can be enhanced by inoculating with plant growth promoting bacteria (PGPB) combined with humic substances. The aim of this work was to examine changes to the metabolic profile and antioxidant enzyme activity of sugarcane treated with PGPB and humic acid (HA) after drought and then rehydration. The drought was imposed by withholding irrigation for 21 days thereby measuring enzyme activity, metabolic profile and photosynthetic rate 1 week after rehydratation. Growth of plants treated with HA, PGPB and with both treatments combined (PGPB+HA) was higher than control plants. The antioxidant enzymes superoxide dismutase (SOD), catalase (CAT) and ascorbate peroxidase (APX) activities remained higher after rehydration only in plants treated with HA. Plants treated with HA and PGPB+HA exhibited increased transpiration, stomatal conductance and net photosynthesis than plants treated with PGPB. The PGPB-treated plants exhibited drought resistance that resembled 'delayed stress onset', which is a new term for preserving water in the plants tissues. Water preservation in plants treated with PGPB was corroborated by higher relative water content (RWC) than control plants at the end of the drought period. Plants treated with HA+PGPB exhibited the highest water potential after rehydration and high RWC. Osmotic adjustment in the other treatments (control, HA and PGPB) was indicated by a new pattern of metabolic response after rehydration, including generally enhanced carbohydrates and proteins and specific changes induced by HA-enhancing aromatic compounds, whereas PGPB exhibited enhanced fatty acids and other aliphatic H species. Humic acids assist with drought stress recovery by inducing antioxidant enzyme activity whereas PGPB induced preservation of leaf water potential and RWC by closing stomata efficiently, resulting in plant water preservation.
653 $aAlívio de estresse hídrico
653 $aBactéria fixadora de nitrogênio
653 $aEficiência do uso da água
653 $aSubstâncias húmicas
700 1 $aMEDICI, L. O.
700 1 $aOLIVARES, F. L.
700 1 $aDOBBSS, L. B.
700 1 $aTORRES-NETTO, A.
700 1 $aSILVA, S. F.
700 1 $aNOVOTNY, E. H.
700 1 $aCANELLAS, L. P.
773 $tAnnals of Applied Biology$gv. 168, n. 2, p. 203-213, Mar. 2016.
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| 2. |  | GODINHO, V. de P. C.; SAMPAIO, R. A.; ALVAREZ VENEGAS, V. H.; RUIZ, H. A. Adsorção de fosfatos em três solos da região semi-árida do Rio Grande do Norte. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 32, n. 8, p. 819-823, ago. 1997 Título em inglês: Phospha te adsorption in three soils of the Rio Grande do Norte Semiarid region.| Biblioteca(s): Embrapa Unidades Centrais. |
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| 5. | | CARMO, C. A. F. de S. do; ALVES, V. M. C.; ALVAREZ VENEGAS, V. H.; CARVALHO, M. A. Desenvolvimento da seringueira em fase de formacao influenciado por diferentes equilibrios Ca:Mg, em solo sob cerrado. In: REUNIAO BRASILEIRA DE FERTILIDADE DE SOLO E NUTRICAO DE PLANTAS, 23.; REUNIAO BRASILEIRA SOBRE MICORRIZAS, 7.; SIMPOSIO BRASILEIRO DE MICROBIOLOGIA DO SOLO, 5.; REUNIAO BRASILEIRA DE BIOLOGIA DO SOLO, 2., 1998, Caxambu, MG. Resumos... Lavras: UFLA / SBCS / SBM, 1998. p. 522. FERTBIO 98: Interrelacao fertilidade, biologia do solo e nutricao de plantas: consolidacao de um paradigma.| Biblioteca(s): Embrapa Solos. |
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| 6. | | SILVA, F. C. da; FREIRE, F. J.; ALVAREZ-VENEGAS. V. H.; CASTRO, A. de; NAKAMOTO, A. de S. Modelagem para otimização da fertilização e calagem na cultura de cana-de-açúcar. In: SIMPÓSIO NACIONAL DE INSTRUMENTAÇÃO AGROPECUÁRIA, 2014, São Carlos, SP. Ciência, inovação e mercado: anais. São Carlos, SP: Embrapa Instrumentação, 2014. p. 657-660. SIAGRO 2014.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Agricultura Digital. |
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| 7. | | CARMO, C. A. F. de S. do; EIRA, P. A. da; MENEGUELLI, N. do A.; CONCEICAO, M. da; MELO, A. da S.; ALVAREZ VENEGAS, V. H. Diagnostico do estado nutricional de seringueiras implantados na regiao da zona da mata de Minas Gerais. In REUNIAO BRASILEIRA DE FERTILIDADE DE SOLO E NUTRICAO DE PLANTAS, 23.; REUNIAO BRASILEIRA SOBRE MICORRIZAS, 7.; SIMPOSIO BRASILEIRO DE MICROBIOLOGIA DO SOLO, 5.; REUNIAO BRASILEIRA DE BIOLOGIA DO SOLO, 2., 1998, Caxambu,MG. Resumos... Lavras: UFLA / SBCS / SBM, 1998. p.523. FERTBIO 98: Interrelacao fertilidade, biologia de solo e nutricao de plantas: consolidacao de um paradigma.| Biblioteca(s): Embrapa Solos. |
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| 8. | | MUNIZ, M. de F. S.; MUCHOVEJ, J. J.; MUCHOVEJ, R. M. C.; ALVAREZ-VENEGAS, V.H.; BROMMONSCHENKEL, S. H.; MAFFIA, L. A. Influência da Nutrição com Cálcio sobre a Antracnose em Feijão. Pesquisa Agropecuária Brasileira, Brasília, v.26, n.11/12, p.2025-2031, nov/dez.1991| Biblioteca(s): Embrapa Unidades Centrais. |
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| 9. | | MUNIZ, M. de F. S.; MUCHOVEJ, J. J.; MAFFIA, L. A.; MUCHOVEJ, R. M. C.; BROMMONSCHENKEL, S. H.; ALVAREZ-VENEGAS, V.H. Influência da Nutrição com Cálcio sobre a Murcha de Fusarium em Feijão. Pesquisa Agropecuária Brasileira, Brasília, v.26, n.11/12, p.2033-2041, nov/dez.1991| Biblioteca(s): Embrapa Unidades Centrais. |
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| 10. | | WADT, L. H. de O.; WADT, P. G. S.; NOVAIS, R. F. de; ALVAREZ VENEGAS, V. H.; BARROS, N. F.; OLIVEIRA, S. Interação entre deficiência de K e a nutrição de CA e MG em clones de árvores adultas de Eucalyptus. In: CONGRESSO BRASILEIRO DE CIÊNCIA DO SOLO, 27., 1999, Brasília, DF. Anais... Brasília, DF: Embrapa-CPAC: UNB, 1999. 1 p. 1 CD ROM.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Acre. |
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