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Registro Completo |
Biblioteca(s): |
Embrapa Agroenergia. |
Data corrente: |
24/06/2021 |
Data da última atualização: |
30/06/2021 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
GOMES, F. P.; ALMEIDA, A. F. de; MIELKE, M. S.; LAVIOLA, B. G.; SILVA, L. D. da. |
Afiliação: |
FÁBIO PINTO GOMES, Universidade Estadual de Santa Cruz; ALEX-ALAN FURTADO DE ALMEIDA, Universidade Estadual de Santa Cruz; MARCELO SCHRAMM MIELKE, Universidade Estadual de Santa Cruz; BRUNO GALVEAS LAVIOLA, CNPAE; LEANDRO DIAS DA SILVA, Universidade Estadual do Sudoeste da Bahia. |
Título: |
Nocturnal acidification in leaves of two genotypes of Jatropha curcas L., subjected to soil water deficit. |
Ano de publicação: |
2021 |
Fonte/Imprenta: |
Plant Physiology Reports, v. 26, p. 220-230, 2021. |
Volume: |
26 |
Páginas: |
p. 220-230 |
ISSN: |
2662-2548 |
DOI: |
https://doi.org/10.1007/s40502-021-00576-2 |
Idioma: |
Inglês |
Conteúdo: |
Jatropha curcas has been considered as a potential oil source for biodiesel production in tropical and subtropical areas. The relationships between water deficit-induced nocturnal acidification and leaf succulence, gas exchange rates and water relations in leaves of J. curcas were accessed in a greenhouse experiment. Two genotypes, from regions of Brazil with contrasting climate (CNPAE183, from a dry and hot tropical climate and CNPAE191, from a humid subtropical climate), were maintained under full irrigation or were subjected to water deficit for 49 days followed by recovery for 7 days. Leaf relative water content decreased with water deficit from 85.4 to 77.5%, in both genotypes. Pre-dawn leaf water potential decreased from - 0.5 MPa in irrigated plants - 1.0 MPa (in CNPAE183) and to - MPa (in CNPAE191). Slow and less intense decrease of leaf gas exchange in CNPAE191 than in CNPAE183 suggests a high effective water use under water deficit in the former. Leaf nocturnal acidification increased 4.3-fold in water deficit plants of both genotypes and a positive correlation between nocturnal acidification and leaf succulence, expressed as fresh mass per dry mass, was observed. Water deficit-induced nocturnal acid accumulation and a positive correlation between nocturnal acidification and leaf succulence were thoroughly demonstrated. While such nocturnal acidification may be related to osmotic adjustment, its correlation with leaf succulence suggests a weak CAM-cycling activity in leaves of J. curcas which, along with other water-conserving mechanisms, may help to explain the widely reported drought tolerance of this species. MenosJatropha curcas has been considered as a potential oil source for biodiesel production in tropical and subtropical areas. The relationships between water deficit-induced nocturnal acidification and leaf succulence, gas exchange rates and water relations in leaves of J. curcas were accessed in a greenhouse experiment. Two genotypes, from regions of Brazil with contrasting climate (CNPAE183, from a dry and hot tropical climate and CNPAE191, from a humid subtropical climate), were maintained under full irrigation or were subjected to water deficit for 49 days followed by recovery for 7 days. Leaf relative water content decreased with water deficit from 85.4 to 77.5%, in both genotypes. Pre-dawn leaf water potential decreased from - 0.5 MPa in irrigated plants - 1.0 MPa (in CNPAE183) and to - MPa (in CNPAE191). Slow and less intense decrease of leaf gas exchange in CNPAE191 than in CNPAE183 suggests a high effective water use under water deficit in the former. Leaf nocturnal acidification increased 4.3-fold in water deficit plants of both genotypes and a positive correlation between nocturnal acidification and leaf succulence, expressed as fresh mass per dry mass, was observed. Water deficit-induced nocturnal acid accumulation and a positive correlation between nocturnal acidification and leaf succulence were thoroughly demonstrated. While such nocturnal acidification may be related to osmotic adjustment, its correlation with leaf succulence suggests a weak CAM-cycling activity ... Mostrar Tudo |
Palavras-Chave: |
Leaf gas exchange. |
Thesagro: |
Bioenergia; Euphorbiaceae. |
Thesaurus Nal: |
Bioenergy; Drought tolerance; Jatropha. |
Categoria do assunto: |
-- |
Marc: |
LEADER 02493naa a2200289 a 4500 001 2132548 005 2021-06-30 008 2021 bl uuuu u00u1 u #d 022 $a2662-2548 024 7 $ahttps://doi.org/10.1007/s40502-021-00576-2$2DOI 100 1 $aGOMES, F. P. 245 $aNocturnal acidification in leaves of two genotypes of Jatropha curcas L., subjected to soil water deficit.$h[electronic resource] 260 $c2021 300 $ap. 220-230 26 490 $v26 520 $aJatropha curcas has been considered as a potential oil source for biodiesel production in tropical and subtropical areas. The relationships between water deficit-induced nocturnal acidification and leaf succulence, gas exchange rates and water relations in leaves of J. curcas were accessed in a greenhouse experiment. Two genotypes, from regions of Brazil with contrasting climate (CNPAE183, from a dry and hot tropical climate and CNPAE191, from a humid subtropical climate), were maintained under full irrigation or were subjected to water deficit for 49 days followed by recovery for 7 days. Leaf relative water content decreased with water deficit from 85.4 to 77.5%, in both genotypes. Pre-dawn leaf water potential decreased from - 0.5 MPa in irrigated plants - 1.0 MPa (in CNPAE183) and to - MPa (in CNPAE191). Slow and less intense decrease of leaf gas exchange in CNPAE191 than in CNPAE183 suggests a high effective water use under water deficit in the former. Leaf nocturnal acidification increased 4.3-fold in water deficit plants of both genotypes and a positive correlation between nocturnal acidification and leaf succulence, expressed as fresh mass per dry mass, was observed. Water deficit-induced nocturnal acid accumulation and a positive correlation between nocturnal acidification and leaf succulence were thoroughly demonstrated. While such nocturnal acidification may be related to osmotic adjustment, its correlation with leaf succulence suggests a weak CAM-cycling activity in leaves of J. curcas which, along with other water-conserving mechanisms, may help to explain the widely reported drought tolerance of this species. 650 $aBioenergy 650 $aDrought tolerance 650 $aJatropha 650 $aBioenergia 650 $aEuphorbiaceae 653 $aLeaf gas exchange 700 1 $aALMEIDA, A. F. de 700 1 $aMIELKE, M. S. 700 1 $aLAVIOLA, B. G. 700 1 $aSILVA, L. D. da 773 $tPlant Physiology Reports$gv. 26, p. 220-230, 2021.
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Embrapa Agroenergia (CNPAE) |
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Biblioteca(s): |
Embrapa Meio Ambiente. |
Data corrente: |
19/03/2015 |
Data da última atualização: |
15/10/2020 |
Tipo da produção científica: |
Artigo em Anais de Congresso |
Autoria: |
JONSSON, C. M.; SILVA, M. S. G. M. e; MARIGO, A. L. S.; MACEDO, V. S. de. |
Afiliação: |
CLAUDIO MARTIN JONSSON, CNPMA; MARIANA SILVEIRA GUERRA MOURA E SILVA, CNPMA; ANA LUCIA SILVA MARIGO, CNPMA. |
Título: |
Testes toxicológicos na avaliação de um sistema de leitos cultivados para efluentes de aquicultura. |
Ano de publicação: |
2014 |
Fonte/Imprenta: |
In: FÓRUM DE APRESENTAÇÃO DE RESULTADOS DE PESQUISA: AVANÇOS E OPORTUNIDADES, 1., 2014, Campinas. Anais... Jaguariúna: Embrapa Meio Ambiente, 2014. RE013. 6 p. |
Idioma: |
Português |
Palavras-Chave: |
Efluente. |
Thesagro: |
Aquicultura; Toxicologia. |
Categoria do assunto: |
-- |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/216697/1/2014SP-Jonsson-Testes-13941.pdf
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Marc: |
LEADER 00666nam a2200169 a 4500 001 2011816 005 2020-10-15 008 2014 bl uuuu u00u1 u #d 100 1 $aJONSSON, C. M. 245 $aTestes toxicológicos na avaliação de um sistema de leitos cultivados para efluentes de aquicultura.$h[electronic resource] 260 $aIn: FÓRUM DE APRESENTAÇÃO DE RESULTADOS DE PESQUISA: AVANÇOS E OPORTUNIDADES, 1., 2014, Campinas. Anais... Jaguariúna: Embrapa Meio Ambiente, 2014. RE013. 6 p.$c2014 650 $aAquicultura 650 $aToxicologia 653 $aEfluente 700 1 $aSILVA, M. S. G. M. e 700 1 $aMARIGO, A. L. S. 700 1 $aMACEDO, V. S. de
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