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Registro Completo |
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Biblioteca(s): |
Embrapa Agricultura Digital. |
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Data corrente: |
19/01/2018 |
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Data da última atualização: |
08/02/2018 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
BARRETO, P.; YASSITEPE, J. E. de C. T.; WILSON, Z. A.; ARRUDA, P. |
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Afiliação: |
PEDRO BARRETO, Unicamp; JULIANA ERIKA DE C T YASSITEPE, CNPTIA; ZOE A. WILSON, University of Nottingham; PAULO ARRUDA, Unicamp. |
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Título: |
Mitochondrial uncoupling protein 1 overexpression increases yield in Nicotiana tabacum under drought stress by improving source and sink metabolism. |
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Ano de publicação: |
2017 |
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Fonte/Imprenta: |
Frontiers in Plant Science, v. 8, p. 1-20, Nov. 2017. |
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DOI: |
https://doi.org/10.3389/fpls.2017.01836 |
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Idioma: |
Inglês |
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Notas: |
Article 1836. Na publicação: Juliana E. C. T. Yassitepe. |
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Conteúdo: |
Mitochondrial uncoupling proteins (UCPs) sustain mitochondrial respiration independent of intracellular ATP concentration. Uncoupled respiration is particularly beneficial under stress conditions, during which both photosynthesis and respiration may be impaired. Sustaining carbon fixation during the reproductive phase is essential for plants to develop viable pollen grains and for seed setting. Here, we examined whether UCP1 overexpression (UCP1-oe) would help tobacco plants cope with drought stress during reproductive development. We observed that WT and UCP1-oe plants lost water at the same rate under moderate drought stress, but that UCP1-oe lines regained water faster upon rewatering. UCP1-oe plants maintained higher levels of respiration and photosynthesis and decreased H2O2 content in the leaves during the drought stress period. We examined whether UCP1-oe impacts reproductive tissues and seed production by monitoring the progress of flower development, focusing on the early stages of pollen formation. UCP1-oe lines induced the expression of mitochondrial genes and increased mtDNA content in reproductive tissues, which increased the consumption of carbohydrates and reduced H2O2 content and pollen disturbances. Finally, the beneficial impact of UCP1-oe on the source and sink organs resulted in an increased seed size and number under both control conditions and drought stress. |
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Palavras-Chave: |
Drought stress; Proteína desacopladora; Tabaco. |
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Thesagro: |
Deficiência hídrica; Fotossíntese; Nicotiana tabacum. |
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Thesaurus Nal: |
Mitochondria; Photosynthesis; Water stress; Yields. |
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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/171383/1/AP-Mitochondrial-Barreto-etal.pdf
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Marc: |
LEADER 02392naa a2200301 a 4500
001 2085852
005 2018-02-08
008 2017 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.3389/fpls.2017.01836$2DOI
100 1 $aBARRETO, P.
245 $aMitochondrial uncoupling protein 1 overexpression increases yield in Nicotiana tabacum under drought stress by improving source and sink metabolism.$h[electronic resource]
260 $c2017
500 $aArticle 1836. Na publicação: Juliana E. C. T. Yassitepe.
520 $aMitochondrial uncoupling proteins (UCPs) sustain mitochondrial respiration independent of intracellular ATP concentration. Uncoupled respiration is particularly beneficial under stress conditions, during which both photosynthesis and respiration may be impaired. Sustaining carbon fixation during the reproductive phase is essential for plants to develop viable pollen grains and for seed setting. Here, we examined whether UCP1 overexpression (UCP1-oe) would help tobacco plants cope with drought stress during reproductive development. We observed that WT and UCP1-oe plants lost water at the same rate under moderate drought stress, but that UCP1-oe lines regained water faster upon rewatering. UCP1-oe plants maintained higher levels of respiration and photosynthesis and decreased H2O2 content in the leaves during the drought stress period. We examined whether UCP1-oe impacts reproductive tissues and seed production by monitoring the progress of flower development, focusing on the early stages of pollen formation. UCP1-oe lines induced the expression of mitochondrial genes and increased mtDNA content in reproductive tissues, which increased the consumption of carbohydrates and reduced H2O2 content and pollen disturbances. Finally, the beneficial impact of UCP1-oe on the source and sink organs resulted in an increased seed size and number under both control conditions and drought stress.
650 $aMitochondria
650 $aPhotosynthesis
650 $aWater stress
650 $aYields
650 $aDeficiência hídrica
650 $aFotossíntese
650 $aNicotiana tabacum
653 $aDrought stress
653 $aProteína desacopladora
653 $aTabaco
700 1 $aYASSITEPE, J. E. de C. T.
700 1 $aWILSON, Z. A.
700 1 $aARRUDA, P.
773 $tFrontiers in Plant Science$gv. 8, p. 1-20, Nov. 2017.
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Registro original: |
Embrapa Agricultura Digital (CNPTIA) |
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Registro Completo
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Biblioteca(s): |
Embrapa Amazônia Ocidental. |
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Data corrente: |
26/11/2020 |
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Data da última atualização: |
11/01/2021 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
RAIZER, M. D. M.; LOPES, M. T. G.; QUISEN, R. C.; LOPES, R.; RODRIGUES, F. A.; PASQUAL, M. |
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Afiliação: |
MARCELO DOMINGUES MARTINS RAIZER; MARIA TERESA GOMES LOPES; REGINA CAETANO QUISEN, CNPF; RICARDO LOPES, CPAA; FILIPE ALMENDAGNA RODRIGUES; MOACIR PASQUAL. |
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Título: |
Caracterização de Ploidia induzida em Heliconia chartacea var Sexy Pink. |
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Ano de publicação: |
2020 |
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Fonte/Imprenta: |
In: CONGRESSO BRASILEIRO DE RECURSOS GENÉTICOS, 6., 2020. Recursos genéticos e bioeconomia: inovação para um futuro sustentável: anais. Brasília, DF: Sociedade Brasileira de Recursos Genéticos, 2020. Trabalho 635. |
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Idioma: |
Português |
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Conteúdo: |
O objetivo do estudo foi determinar o conteúdo de DNA por citometria de fluxo e caracterizar diversidade genética entre os genótipos utilizando marcador molecular AFLP. |
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Palavras-Chave: |
Flores tropicais. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/218276/1/Caracterizacao-de-Ploidia.pdf
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Marc: |
LEADER 00882nam a2200181 a 4500
001 2127110
005 2021-01-11
008 2020 bl uuuu u00u1 u #d
100 1 $aRAIZER, M. D. M.
245 $aCaracterização de Ploidia induzida em Heliconia chartacea var Sexy Pink.$h[electronic resource]
260 $aIn: CONGRESSO BRASILEIRO DE RECURSOS GENÉTICOS, 6., 2020. Recursos genéticos e bioeconomia: inovação para um futuro sustentável: anais. Brasília, DF: Sociedade Brasileira de Recursos Genéticos, 2020. Trabalho 635.$c2020
520 $aO objetivo do estudo foi determinar o conteúdo de DNA por citometria de fluxo e caracterizar diversidade genética entre os genótipos utilizando marcador molecular AFLP.
653 $aFlores tropicais
700 1 $aLOPES, M. T. G.
700 1 $aQUISEN, R. C.
700 1 $aLOPES, R.
700 1 $aRODRIGUES, F. A.
700 1 $aPASQUAL, M.
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Embrapa Amazônia Ocidental (CPAA) |
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