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 | Acesso ao texto completo restrito à biblioteca da Embrapa Semiárido. Para informações adicionais entre em contato com cpatsa.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Semiárido. |
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Data corrente: |
16/10/2017 |
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Data da última atualização: |
18/05/2018 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
AIDAR, S. de T.; CHAVES, A. R. de M.; FERNANDES JUNIOR, P. I.; OLIVEIRA, M. de S.; COSTA NETO, B. P. da; CALSA JUNIOR, T.; MORGANTE, C. V. |
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Afiliação: |
SAULO DE TARSO AIDAR, CPATSA; AGNALDO RODRIGUES DE MELO CHAVES, CPATSA; PAULO IVAN FERNANDES JUNIOR, CPATSA; MELQUISEDEC DE S. OLIVEIRA, UFPE; BENJAMIM P. DA COSTA NETO, UPE; TERCÍLIO CALSA JUNIOR, UFPE; CAROLINA VIANNA MORGANTE, CPATSA. |
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Título: |
Vegetative desiccation tolerance of Tripogon spicatus (Poaceae) from the tropical semiarid region of northeastern Brazil. |
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Ano de publicação: |
2017 |
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Fonte/Imprenta: |
Functional Plant Biology, v, 44, n. 11, p. 1124-1133, 2017. |
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DOI: |
10.1071/FP17066 |
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Idioma: |
Inglês |
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Conteúdo: |
The vegetative desiccation tolerance of Tripogon spicatus (Nees) Ekman was confirmed by its ability to recover the physiological functionality of intact plants previously subjected to extreme dehydration. Photosynthesis became undetectable when leaf relative water content (RWCleaf) achieved ~60%, whereas photochemical variables showed a partial decrease. Until the minimum RWCleaf of 6.41%, total chl decreased by 9%, and total carotenoids increased by 29%. Superoxide dismutase (SOD) activity decreased by 57%, on average, during dehydration, but catalase (CAT) and peroxidase (APX) activities showed no significant differences throughout the experiment. Malondialdehyde (MDA) content increased by 151%, total leaf and root amino acids decreased by 62% and 77%, respectively, whereas leaf and root proline decreased by 40% and 61%, respectively, until complete desiccation. After rehydration, leaves completely recovered turgidity and total chl contents. Carotenoids and MDA remained high, whereas SOD was 60% lower than the measured average measured before dehydration. With the exception of root amino acid contents, total amino acids and proline concentrations recovered completely. Gas exchange and photochemical variables remained substantially higher 4 days after rehydration, compared with the control. Besides increasing MDA, the overall physiological results showed that membrane functionality was preserved, leading to the vegetative desiccation tolerance of T. spicatus during the dehydration?rehydration cycle. MenosThe vegetative desiccation tolerance of Tripogon spicatus (Nees) Ekman was confirmed by its ability to recover the physiological functionality of intact plants previously subjected to extreme dehydration. Photosynthesis became undetectable when leaf relative water content (RWCleaf) achieved ~60%, whereas photochemical variables showed a partial decrease. Until the minimum RWCleaf of 6.41%, total chl decreased by 9%, and total carotenoids increased by 29%. Superoxide dismutase (SOD) activity decreased by 57%, on average, during dehydration, but catalase (CAT) and peroxidase (APX) activities showed no significant differences throughout the experiment. Malondialdehyde (MDA) content increased by 151%, total leaf and root amino acids decreased by 62% and 77%, respectively, whereas leaf and root proline decreased by 40% and 61%, respectively, until complete desiccation. After rehydration, leaves completely recovered turgidity and total chl contents. Carotenoids and MDA remained high, whereas SOD was 60% lower than the measured average measured before dehydration. With the exception of root amino acid contents, total amino acids and proline concentrations recovered completely. Gas exchange and photochemical variables remained substantially higher 4 days after rehydration, compared with the control. Besides increasing MDA, the overall physiological results showed that membrane functionality was preserved, leading to the vegetative desiccation tolerance of T. spicatus during the dehy... Mostrar Tudo |
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Palavras-Chave: |
Desidratação vegetativa; Resurrection plant; Tripogon spicatus. |
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Thesagro: |
Caatinga; Gramínea. |
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Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
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Marc: |
LEADER 02343naa a2200265 a 4500
001 2077453
005 2018-05-18
008 2017 bl uuuu u00u1 u #d
024 7 $a10.1071/FP17066$2DOI
100 1 $aAIDAR, S. de T.
245 $aVegetative desiccation tolerance of Tripogon spicatus (Poaceae) from the tropical semiarid region of northeastern Brazil.
260 $c2017
520 $aThe vegetative desiccation tolerance of Tripogon spicatus (Nees) Ekman was confirmed by its ability to recover the physiological functionality of intact plants previously subjected to extreme dehydration. Photosynthesis became undetectable when leaf relative water content (RWCleaf) achieved ~60%, whereas photochemical variables showed a partial decrease. Until the minimum RWCleaf of 6.41%, total chl decreased by 9%, and total carotenoids increased by 29%. Superoxide dismutase (SOD) activity decreased by 57%, on average, during dehydration, but catalase (CAT) and peroxidase (APX) activities showed no significant differences throughout the experiment. Malondialdehyde (MDA) content increased by 151%, total leaf and root amino acids decreased by 62% and 77%, respectively, whereas leaf and root proline decreased by 40% and 61%, respectively, until complete desiccation. After rehydration, leaves completely recovered turgidity and total chl contents. Carotenoids and MDA remained high, whereas SOD was 60% lower than the measured average measured before dehydration. With the exception of root amino acid contents, total amino acids and proline concentrations recovered completely. Gas exchange and photochemical variables remained substantially higher 4 days after rehydration, compared with the control. Besides increasing MDA, the overall physiological results showed that membrane functionality was preserved, leading to the vegetative desiccation tolerance of T. spicatus during the dehydration?rehydration cycle.
650 $aCaatinga
650 $aGramínea
653 $aDesidratação vegetativa
653 $aResurrection plant
653 $aTripogon spicatus
700 1 $aCHAVES, A. R. de M.
700 1 $aFERNANDES JUNIOR, P. I.
700 1 $aOLIVEIRA, M. de S.
700 1 $aCOSTA NETO, B. P. da
700 1 $aCALSA JUNIOR, T.
700 1 $aMORGANTE, C. V.
773 $tFunctional Plant Biology, v, 44$gn. 11, p. 1124-1133, 2017.
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Registro original: |
Embrapa Semiárido (CPATSA) |
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Biblioteca |
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Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
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Registro Completo
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Biblioteca(s): |
Embrapa Semiárido. |
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Data corrente: |
12/04/2004 |
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Data da última atualização: |
21/02/2020 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
SILVA, C. S. B. da; MOREIRA, F. R. B.; MACHADO, J. de C.; KIILL, L. H. P.; MAGALHÃES, E. E. de; SOUZA, E. A. de. |
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Afiliação: |
FLAVIA RABELO BARBOSA MOREIRA, CPATSA; LUCIA HELENA PIEDADE KIILL, CPATSA. |
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Título: |
Influência do substrato e da profundidade de semeadura na germinação de sementes de angico-de-caroço [Anadenanthera macrocarpa (Benth.) Brenan - Leguminosae]. |
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Ano de publicação: |
2004 |
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Fonte/Imprenta: |
In: REUNIÃO NORDESTINA DE BOTÂNICA, 27., 2004, Petrolina. Anais... Petrolina: SBB; Embrapa Semi-Árido; UNEB, 2004. |
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Descrição Física: |
1 CD-ROM. |
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Idioma: |
Português |
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Conteúdo: |
O angico-de-caroço [Anadenanthera macrocarpa (Benth.) Brenan] é uma árvore de grande distribuição n Nordeste brasileiro, apresentando rápido crescimento e ótimo potencial para reflorestamento e ornamentação. |
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Palavras-Chave: |
Angico de caroço. |
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Thesagro: |
Anadenanthera Macrocarpa; Germinação; Semente. |
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Thesaurus NAL: |
Germination; Seeds. |
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Categoria do assunto: |
A Sistemas de Cultivo |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/CPATSA/28485/1/OPB134.pdf
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Marc: |
LEADER 01075nam a2200253 a 4500
001 1152994
005 2020-02-21
008 2004 bl uuuu u00u1 u #d
100 1 $aSILVA, C. S. B. da
245 $aInfluência do substrato e da profundidade de semeadura na germinação de sementes de angico-de-caroço [Anadenanthera macrocarpa (Benth.) Brenan - Leguminosae].
260 $aIn: REUNIÃO NORDESTINA DE BOTÂNICA, 27., 2004, Petrolina. Anais... Petrolina: SBB; Embrapa Semi-Árido; UNEB$c2004
300 $c1 CD-ROM.
520 $aO angico-de-caroço [Anadenanthera macrocarpa (Benth.) Brenan] é uma árvore de grande distribuição n Nordeste brasileiro, apresentando rápido crescimento e ótimo potencial para reflorestamento e ornamentação.
650 $aGermination
650 $aSeeds
650 $aAnadenanthera Macrocarpa
650 $aGerminação
650 $aSemente
653 $aAngico de caroço
700 1 $aMOREIRA, F. R. B.
700 1 $aMACHADO, J. de C.
700 1 $aKIILL, L. H. P.
700 1 $aMAGALHÃES, E. E. de
700 1 $aSOUZA, E. A. de
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