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Registro Completo |
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Biblioteca(s): |
Embrapa Amazônia Oriental. |
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Data corrente: |
03/02/2016 |
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Data da última atualização: |
26/05/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
CAMPOS, N. A.; ALVES, J. D.; SOUZA, K. R. D. de; PORTO, B. N.; MAGALHAES, M. M.; SILVA, G. J. da; PAIVA, L. V. |
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Afiliação: |
Nádia Alves Campos, Catholic University of Leuven; José Donizeti Alves, UFLA; Kamila Rezende Dázio de Souza, UFLA; Brenda Neves Porto, UFLA; MARCELO MURAD MAGALHAES, CPATU; Glacy Jaqueline da Silva, UFPEL; Luciano Vilela Paiva, UFLA. |
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Título: |
Evolution of aerenchyma formation in a maize breeding program. |
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Ano de publicação: |
2016 |
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Fonte/Imprenta: |
Plant Omics Journal, v. 9, n. 1, p. 19-25, 2016. |
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Idioma: |
Inglês |
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Conteúdo: |
Approximately 28 million hectares of intermittently flooded land with agricultural potential in Brazil could be used for rice crop rotation to increase production. Understanding the flood tolerance mechanisms in "Saracura" is of paramount importance for maize and other crops. Thus, we evaluated the expression levels of the superoxide dismutase, ascorbate peroxidase, guaiacol peroxidase, and catalase antioxidant genes and cell wall loosening (XET) enzyme in maize roots under flooding as well as associated expression with the initiation of aerenchyma formation, which is the most important plant adaptation to flooding. We collected data on "Saracura" at the beginning of the breeding program (cycle 1), a time considered more sensitive to flooding, and during the last selection cycle (cycle 18), a time considered more resistant to flooding. Maize plants were flooded for 12 and 24h, and roots were collected for anatomic (aerenchyma density in the root cortex) and gene expression analyses by qRT-PCR. Our results showed that there was a proportional graded increase in aerenchyma formed in the root cortex with increased flooding time that was most pronounced during selection cycle 18. Antioxidant enzyme gene expression levels at both time points were similar: high expression just after germination, decreased expression after 12h, and increased expression after 24h of flooding. Aerenchyma formation was detectable after 24h of flooding, which coincided with the highest antioxidant enzyme gene expression levels. These results indicate that the correlation between antioxidant enzyme activities and flooding can act as a molecular flag to improve flood tolerance in "Saracura". Our results are important to understand the induction of aerenchyma formation and flooding tolerance in "Saracura". MenosApproximately 28 million hectares of intermittently flooded land with agricultural potential in Brazil could be used for rice crop rotation to increase production. Understanding the flood tolerance mechanisms in "Saracura" is of paramount importance for maize and other crops. Thus, we evaluated the expression levels of the superoxide dismutase, ascorbate peroxidase, guaiacol peroxidase, and catalase antioxidant genes and cell wall loosening (XET) enzyme in maize roots under flooding as well as associated expression with the initiation of aerenchyma formation, which is the most important plant adaptation to flooding. We collected data on "Saracura" at the beginning of the breeding program (cycle 1), a time considered more sensitive to flooding, and during the last selection cycle (cycle 18), a time considered more resistant to flooding. Maize plants were flooded for 12 and 24h, and roots were collected for anatomic (aerenchyma density in the root cortex) and gene expression analyses by qRT-PCR. Our results showed that there was a proportional graded increase in aerenchyma formed in the root cortex with increased flooding time that was most pronounced during selection cycle 18. Antioxidant enzyme gene expression levels at both time points were similar: high expression just after germination, decreased expression after 12h, and increased expression after 24h of flooding. Aerenchyma formation was detectable after 24h of flooding, which coincided with the highest antioxidant enzy... Mostrar Tudo |
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Thesagro: |
Melhoramento; Milho. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/138394/1/Campos2016.pdf
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Marc: |
LEADER 02401naa a2200217 a 4500
001 2036062
005 2022-05-26
008 2016 bl uuuu u00u1 u #d
100 1 $aCAMPOS, N. A.
245 $aEvolution of aerenchyma formation in a maize breeding program.$h[electronic resource]
260 $c2016
520 $aApproximately 28 million hectares of intermittently flooded land with agricultural potential in Brazil could be used for rice crop rotation to increase production. Understanding the flood tolerance mechanisms in "Saracura" is of paramount importance for maize and other crops. Thus, we evaluated the expression levels of the superoxide dismutase, ascorbate peroxidase, guaiacol peroxidase, and catalase antioxidant genes and cell wall loosening (XET) enzyme in maize roots under flooding as well as associated expression with the initiation of aerenchyma formation, which is the most important plant adaptation to flooding. We collected data on "Saracura" at the beginning of the breeding program (cycle 1), a time considered more sensitive to flooding, and during the last selection cycle (cycle 18), a time considered more resistant to flooding. Maize plants were flooded for 12 and 24h, and roots were collected for anatomic (aerenchyma density in the root cortex) and gene expression analyses by qRT-PCR. Our results showed that there was a proportional graded increase in aerenchyma formed in the root cortex with increased flooding time that was most pronounced during selection cycle 18. Antioxidant enzyme gene expression levels at both time points were similar: high expression just after germination, decreased expression after 12h, and increased expression after 24h of flooding. Aerenchyma formation was detectable after 24h of flooding, which coincided with the highest antioxidant enzyme gene expression levels. These results indicate that the correlation between antioxidant enzyme activities and flooding can act as a molecular flag to improve flood tolerance in "Saracura". Our results are important to understand the induction of aerenchyma formation and flooding tolerance in "Saracura".
650 $aMelhoramento
650 $aMilho
700 1 $aALVES, J. D.
700 1 $aSOUZA, K. R. D. de
700 1 $aPORTO, B. N.
700 1 $aMAGALHAES, M. M.
700 1 $aSILVA, G. J. da
700 1 $aPAIVA, L. V.
773 $tPlant Omics Journal$gv. 9, n. 1, p. 19-25, 2016.
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Registro original: |
Embrapa Amazônia Oriental (CPATU) |
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Classificação |
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Registro Completo
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Biblioteca(s): |
Embrapa Semiárido. |
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Data corrente: |
05/01/2016 |
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Data da última atualização: |
25/02/2016 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
LEAO, P. C. de S.; NASCIMENTO, J. H. B.; NUNES, B. T. G.; REGO, J. I. de S.; SOUZA, E. M de C.; COSTA, J. P. D. |
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Afiliação: |
PATRICIA COELHO DE SOUZA LEAO, CPATSA; J. H. B. NASCIMENTO; B. T. G. NUNES; J. I. DE S. REGO; EM. M. DE C. SOUZA; J. P. D. COSTA. |
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Título: |
Utilização de porta-enxertos para a produção de novas cultivares uvas sem sementes no Vale do São Francisco: resultados preliminares. |
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Ano de publicação: |
2015 |
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Fonte/Imprenta: |
In: CONGRESSO LATINO-AMERICANO DE VITICULTURA E ENOLOGIA, 15.; CONGRESSO BRASILEIRO DE VITICULTURA E ENOLOGIA, 13., 2015, Bento Gonçalves. Resumos... Bento Gonçalves: Embrapa Uva e Vinho: Associação Brasileira de Enologia, 2015. |
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Descrição Física: |
1 Pen drive. |
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Idioma: |
Português |
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Conteúdo: |
Este trabalho teve como objetivo estudar a influência do porta-enxerto sobre componentes de produção e características físico-químicas de uvas sem sementes no Vale do São Francisco. |
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Palavras-Chave: |
Características físico-químicas; Porta-enxerto; Uvas sem sementes; Vale do São Francisco. |
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Thesagro: |
Uva; Vitis Vinifera. |
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Thesaurus NAL: |
Grapes. |
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Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/136600/1/Patricia.pdf
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Marc: |
LEADER 01190nam a2200265 a 4500
001 2032921
005 2016-02-25
008 2015 bl uuuu u00u1 u #d
100 1 $aLEAO, P. C. de S.
245 $aUtilização de porta-enxertos para a produção de novas cultivares uvas sem sementes no Vale do São Francisco$bresultados preliminares.
260 $aIn: CONGRESSO LATINO-AMERICANO DE VITICULTURA E ENOLOGIA, 15.; CONGRESSO BRASILEIRO DE VITICULTURA E ENOLOGIA, 13., 2015, Bento Gonçalves. Resumos... Bento Gonçalves: Embrapa Uva e Vinho: Associação Brasileira de Enologia$c2015
300 $c1 Pen drive.
520 $aEste trabalho teve como objetivo estudar a influência do porta-enxerto sobre componentes de produção e características físico-químicas de uvas sem sementes no Vale do São Francisco.
650 $aGrapes
650 $aUva
650 $aVitis Vinifera
653 $aCaracterísticas físico-químicas
653 $aPorta-enxerto
653 $aUvas sem sementes
653 $aVale do São Francisco
700 1 $aNASCIMENTO, J. H. B.
700 1 $aNUNES, B. T. G.
700 1 $aREGO, J. I. de S.
700 1 $aSOUZA, E. M de C.
700 1 $aCOSTA, J. P. D.
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Registro original: |
Embrapa Semiárido (CPATSA) |
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