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Registro Completo |
Biblioteca(s): |
Embrapa Solos. |
Data corrente: |
17/10/2016 |
Data da última atualização: |
10/11/2021 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
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. |
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. |
Título: |
Metabolic profile and antioxidant responses during drought stress recovery in sugarcane treated with humic acids and endophytic diazotrophic bacteria. |
Ano de publicação: |
2016 |
Fonte/Imprenta: |
Annals of Applied Biology, v. 168, n. 2, p. 203-213, Mar. 2016. |
DOI: |
https://doi.org/10.1111/aab.12256 |
Idioma: |
Inglês |
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 |
Palavras-Chave: |
Alívio de estresse hídrico; Bactéria fixadora de nitrogênio; Eficiência do uso da água; Substâncias húmicas. |
Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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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Biblioteca(s): |
Embrapa Arroz e Feijão. |
Data corrente: |
15/12/2022 |
Data da última atualização: |
15/12/2022 |
Tipo da produção científica: |
Resumo em Anais de Congresso |
Autoria: |
MAKOWICH, A. F. F.; ALENCAR, A. G. G. de; SOUSA, L. M. de; BOAVENTURA, H. A.; GODINHO, K. C. A.; QUINTELA, E. D. |
Afiliação: |
ANA F. F. MAKOWICH, UNIVERSIDADE FEDERAL DE GOIÁS; ANNA G. G. DE ALENCAR, UNIVERSIDADE FEDERAL DE GOIÁS; LARISSA M. DE SOUSA, UNIVERSIDADE FEDERAL DE GOIÁS; HELOIZA A. BOAVENTURA, UNIVERSIDADE FEDERAL DE GOIÁS; KARINA C. A. GODINHO, UNIVERSIDADE FEDERAL DE GOIÁS; ELIANE DIAS QUINTELA, CNPAF. |
Título: |
Virulência de Cordyceps javanica a Helicoverpa armigera (Hübner) e Spodoptera frugiperda (Smith) (Lepidoptera: Noctuidae) em dieta natural e artificial. |
Ano de publicação: |
2022 |
Fonte/Imprenta: |
In: CONGRESSO BRASILEIRO DE ENTOMOLOGIA, 28., 2022, Fortaleza. Anais... Fortaleza: SEB, 2022. |
Páginas: |
p. 320. |
Idioma: |
Português |
Conteúdo: |
Os fungos entomopatogênicos representam a maior parcela de organismos utilizados no controle microbiano de insetos no mundo. O gênero Cordyceps tem sido isolado de lagartas de diferentes espécies em nível epizoótico demonstrando alto potencial para o controle destes insetos. O objetivo deste trabalho foi avaliar a virulência de C. javanica a lagartas de 120 h de vida de Helicoverpa armigera e Spodoptera frugiperda em dieta natural e artificial. |
Palavras-Chave: |
Fonte alimentar. |
Thesagro: |
Controle Microbiano; Fungo Entomógeno. |
Thesaurus NAL: |
Cordyceps; Helicoverpa armigera. |
Categoria do assunto: |
O Insetos e Entomologia |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1149781/1/CBE-2002-320.pdf
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Marc: |
LEADER 01289nam a2200241 a 4500 001 2149781 005 2022-12-15 008 2022 bl uuuu u00u1 u #d 100 1 $aMAKOWICH, A. F. F. 245 $aVirulência de Cordyceps javanica a Helicoverpa armigera (Hübner) e Spodoptera frugiperda (Smith) (Lepidoptera$bNoctuidae) em dieta natural e artificial.$h[electronic resource] 260 $aIn: CONGRESSO BRASILEIRO DE ENTOMOLOGIA, 28., 2022, Fortaleza. Anais... Fortaleza: SEB$c2022 300 $ap. 320. 520 $aOs fungos entomopatogênicos representam a maior parcela de organismos utilizados no controle microbiano de insetos no mundo. O gênero Cordyceps tem sido isolado de lagartas de diferentes espécies em nível epizoótico demonstrando alto potencial para o controle destes insetos. O objetivo deste trabalho foi avaliar a virulência de C. javanica a lagartas de 120 h de vida de Helicoverpa armigera e Spodoptera frugiperda em dieta natural e artificial. 650 $aCordyceps 650 $aHelicoverpa armigera 650 $aControle Microbiano 650 $aFungo Entomógeno 653 $aFonte alimentar 700 1 $aALENCAR, A. G. G. de 700 1 $aSOUSA, L. M. de 700 1 $aBOAVENTURA, H. A. 700 1 $aGODINHO, K. C. A. 700 1 $aQUINTELA, E. D.
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