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Registro Completo |
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Biblioteca(s): |
Embrapa Hortaliças. |
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Data corrente: |
25/03/2009 |
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Data da última atualização: |
26/03/2009 |
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Autoria: |
FREITAS, R. A. de. |
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Afiliação: |
Raquel Alves de Freitas, 315300; Embrapa Hortaliças. |
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Título: |
Produção de sementes de milho-doce. |
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Ano de publicação: |
2007 |
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Fonte/Imprenta: |
In: CURSO SOBRE TECNOLOGIA DE PRODUÇÃO DE SEMENTES DE HORTALIÇAS, 7., 2007, Brasília, DF. Palestras... Brasília, DF: Embrapa Hortaliças, 2007. |
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Descrição Física: |
CD-ROM. |
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Idioma: |
Português |
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Palavras-Chave: |
Milho-doce. |
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Thesagro: |
Milho Verde; Produção; Semente; Zea Mays. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 00551naa a2200181 a 4500
001 1781283
005 2009-03-26
008 2007 bl uuuu u00u1 u #d
100 1 $aFREITAS, R. A. de
245 $aProdução de sementes de milho-doce.
260 $c2007
300 $cCD-ROM.
650 $aMilho Verde
650 $aProdução
650 $aSemente
650 $aZea Mays
653 $aMilho-doce
773 $tIn: CURSO SOBRE TECNOLOGIA DE PRODUÇÃO DE SEMENTES DE HORTALIÇAS, 7., 2007, Brasília, DF. Palestras... Brasília, DF: Embrapa Hortaliças, 2007.
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Registro original: |
Embrapa Hortaliças (CNPH) |
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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
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Biblioteca(s): |
Embrapa Arroz e Feijão. |
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Data corrente: |
27/09/2023 |
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Data da última atualização: |
06/12/2023 |
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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: |
FARIA, D. R.; MENDONÇA, S. M.; OLIVEIRA, M. I. de S.; LANNA, A. C.; FILIPPI, M. C. C. de. |
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Afiliação: |
DENNER ROBERT FARIA, UNIVERSIDADE FEDERAL DE GOIÁS; SILLAS MARTINS MENDONÇA, UNIVERSIDADE FEDERAL DE GOIÁS; MAYTHSULENE INÁCIO DE SOUSA OLIVEIRA, bolsista CNPAF; ANNA CRISTINA LANNA, CNPAF; MARTA CRISTINA CORSI DE FILIPPI, CNPAF. |
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Título: |
Rhizobacteria and silicon mitigate multiple stresses in upland rice. |
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Ano de publicação: |
2023 |
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Fonte/Imprenta: |
Tropical Plant Pathology, v. 48, n. 5, p. 508-522, Oct. 2023. |
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ISSN: |
1983-2052 |
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DOI: |
https://doi.org/10.1007/s40858-023-00593-6 |
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Idioma: |
Inglês |
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Conteúdo: |
This study selected plant growth-promoting rhizobacteria (PGPR) combined with silicon (Si) able to alleviate biotic and abiotic stresses. The PGPRs were Serratia sp. (BRM 32113, BRM 32114, BRM 63521, BRM 63523, and BRM 63522), Bacillus sp. (BRM 32110 and BRM 32109), Pseudomonas nitroreducens (BRM 32112) and Burkholderia cepacia (BRM 32111). E1 and E2 assays detected indoleacetic acid (IAA) production and ACC deaminase activity. In E3 and E4 assays, PGPRs isolates combined with monosilicic acid (0.5 g L -1) were tested for resistance to osmotic potential induced by PEG-6000 in the concentrations of 79.8 g L -1 (-0.1 MPa); 121.1 g L -1 (-0.2 MPa); 180.2 g L -1 (-0.4 MPa); 264.2 g L -1 (-0.8 MPa); 298.1 g L -1 (-1.0 MPa) and 328.9 g L -1 (-1.2 MPa). In E5, rice seed, treated with BRM 32110, BRM 32111 and BRM 63523 were cultivated in culture medium containing different concentrations of PEG-6000 and Si (0.5 g L -1) in a completely randomized design, with six replications. In E6, BRM 32110, BRM 32111 and BRM 63523 was tested for antagonist efficiency to Magnaporthe oryzae, under osmotic pressure. In E7, rice seeds were sown in plastic trays containing 3 kg of soil fertilized with calcium and magnesium silicate (2 ton ha -1), in a greenhouse. Treatments T1 (control), T2 (Si fertilized soil), T3 (BRM 32111), and T4 (T2 + T3) were submitted to water deficit, followed by challenge spray inoculation with M. oryzae (3 x 105con.m1), at 25 days after sowing. The treatments were evaluated for photosynthetic rate (A, umol CO2 m-2 s-1), transpiration rate (E, mmol H2O m-2 s-1), stomatal conductance (gs, mol H2O m-2 s-1), internal carbon (Ci, umol mol-1), and leaf blast severity. BRM 32110, BRM 32111 and BRM 63523 were resistant to osmotic stress (E3 and E4) and were identified as IAA and ACC deaminase producers (E1 and E2). Rice plants treated with BRM 32110, BRM 32111 and BRM 63523 and in the presence of monosilicic acid, showed an increase of 71.34, 110.27 and 126.56% in the total root length and 60.75, 127.60 and 180.82% in the total root surface area, respectively (E5). The rhizobacteria BRM 32110, BRM 32111 and BRM 63523 reduced 78.36, 60.89 and 39.37% of M. oryzae mycelial growth (E6), respectively. In (E7), rice plants treated with BRM 32111 and Si showed higher rates of A, E, gs and Ci with an increase of up to 56.25%, 58.63%, 71.33% and 37.4% under water deficit conditions, in addition to 62.8% of leaf blast suppression. Therefore, we prove that rhizobacteria and silicon, in combination, are efficient to mitigate the water deficit and suppress the severity of leaf blast in the tropical region, thus constituting an alternative to compose sustainable rice management. MenosThis study selected plant growth-promoting rhizobacteria (PGPR) combined with silicon (Si) able to alleviate biotic and abiotic stresses. The PGPRs were Serratia sp. (BRM 32113, BRM 32114, BRM 63521, BRM 63523, and BRM 63522), Bacillus sp. (BRM 32110 and BRM 32109), Pseudomonas nitroreducens (BRM 32112) and Burkholderia cepacia (BRM 32111). E1 and E2 assays detected indoleacetic acid (IAA) production and ACC deaminase activity. In E3 and E4 assays, PGPRs isolates combined with monosilicic acid (0.5 g L -1) were tested for resistance to osmotic potential induced by PEG-6000 in the concentrations of 79.8 g L -1 (-0.1 MPa); 121.1 g L -1 (-0.2 MPa); 180.2 g L -1 (-0.4 MPa); 264.2 g L -1 (-0.8 MPa); 298.1 g L -1 (-1.0 MPa) and 328.9 g L -1 (-1.2 MPa). In E5, rice seed, treated with BRM 32110, BRM 32111 and BRM 63523 were cultivated in culture medium containing different concentrations of PEG-6000 and Si (0.5 g L -1) in a completely randomized design, with six replications. In E6, BRM 32110, BRM 32111 and BRM 63523 was tested for antagonist efficiency to Magnaporthe oryzae, under osmotic pressure. In E7, rice seeds were sown in plastic trays containing 3 kg of soil fertilized with calcium and magnesium silicate (2 ton ha -1), in a greenhouse. Treatments T1 (control), T2 (Si fertilized soil), T3 (BRM 32111), and T4 (T2 + T3) were submitted to water deficit, followed by challenge spray inoculation with M. oryzae (3 x 105con.m1), at 25 days after sowing. The treatments were evaluated... Mostrar Tudo |
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Palavras-Chave: |
Antagonism; Bioactivity; Estresse abiótico; Estresse biótico; Osmotic potential; Rizobacteria. |
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Thesagro: |
Arroz; Oryza Sativa; Stress. |
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Thesaurus NAL: |
Gas exchange; Osmotic treatment; Plant growth-promoting rhizobacteria; Root systems; Shoots; Silicon. |
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Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
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Marc: |
LEADER 03761naa a2200373 a 4500
001 2156932
005 2023-12-06
008 2023 bl uuuu u00u1 u #d
022 $a1983-2052
024 7 $ahttps://doi.org/10.1007/s40858-023-00593-6$2DOI
100 1 $aFARIA, D. R.
245 $aRhizobacteria and silicon mitigate multiple stresses in upland rice.$h[electronic resource]
260 $c2023
520 $aThis study selected plant growth-promoting rhizobacteria (PGPR) combined with silicon (Si) able to alleviate biotic and abiotic stresses. The PGPRs were Serratia sp. (BRM 32113, BRM 32114, BRM 63521, BRM 63523, and BRM 63522), Bacillus sp. (BRM 32110 and BRM 32109), Pseudomonas nitroreducens (BRM 32112) and Burkholderia cepacia (BRM 32111). E1 and E2 assays detected indoleacetic acid (IAA) production and ACC deaminase activity. In E3 and E4 assays, PGPRs isolates combined with monosilicic acid (0.5 g L -1) were tested for resistance to osmotic potential induced by PEG-6000 in the concentrations of 79.8 g L -1 (-0.1 MPa); 121.1 g L -1 (-0.2 MPa); 180.2 g L -1 (-0.4 MPa); 264.2 g L -1 (-0.8 MPa); 298.1 g L -1 (-1.0 MPa) and 328.9 g L -1 (-1.2 MPa). In E5, rice seed, treated with BRM 32110, BRM 32111 and BRM 63523 were cultivated in culture medium containing different concentrations of PEG-6000 and Si (0.5 g L -1) in a completely randomized design, with six replications. In E6, BRM 32110, BRM 32111 and BRM 63523 was tested for antagonist efficiency to Magnaporthe oryzae, under osmotic pressure. In E7, rice seeds were sown in plastic trays containing 3 kg of soil fertilized with calcium and magnesium silicate (2 ton ha -1), in a greenhouse. Treatments T1 (control), T2 (Si fertilized soil), T3 (BRM 32111), and T4 (T2 + T3) were submitted to water deficit, followed by challenge spray inoculation with M. oryzae (3 x 105con.m1), at 25 days after sowing. The treatments were evaluated for photosynthetic rate (A, umol CO2 m-2 s-1), transpiration rate (E, mmol H2O m-2 s-1), stomatal conductance (gs, mol H2O m-2 s-1), internal carbon (Ci, umol mol-1), and leaf blast severity. BRM 32110, BRM 32111 and BRM 63523 were resistant to osmotic stress (E3 and E4) and were identified as IAA and ACC deaminase producers (E1 and E2). Rice plants treated with BRM 32110, BRM 32111 and BRM 63523 and in the presence of monosilicic acid, showed an increase of 71.34, 110.27 and 126.56% in the total root length and 60.75, 127.60 and 180.82% in the total root surface area, respectively (E5). The rhizobacteria BRM 32110, BRM 32111 and BRM 63523 reduced 78.36, 60.89 and 39.37% of M. oryzae mycelial growth (E6), respectively. In (E7), rice plants treated with BRM 32111 and Si showed higher rates of A, E, gs and Ci with an increase of up to 56.25%, 58.63%, 71.33% and 37.4% under water deficit conditions, in addition to 62.8% of leaf blast suppression. Therefore, we prove that rhizobacteria and silicon, in combination, are efficient to mitigate the water deficit and suppress the severity of leaf blast in the tropical region, thus constituting an alternative to compose sustainable rice management.
650 $aGas exchange
650 $aOsmotic treatment
650 $aPlant growth-promoting rhizobacteria
650 $aRoot systems
650 $aShoots
650 $aSilicon
650 $aArroz
650 $aOryza Sativa
650 $aStress
653 $aAntagonism
653 $aBioactivity
653 $aEstresse abiótico
653 $aEstresse biótico
653 $aOsmotic potential
653 $aRizobacteria
700 1 $aMENDONÇA, S. M.
700 1 $aOLIVEIRA, M. I. de S.
700 1 $aLANNA, A. C.
700 1 $aFILIPPI, M. C. C. de
773 $tTropical Plant Pathology$gv. 48, n. 5, p. 508-522, Oct. 2023.
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