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 | Acesso ao texto completo restrito à biblioteca da Embrapa Solos. Para informações adicionais entre em contato com cnps.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Solos. |
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Data corrente: |
14/04/2015 |
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Data da última atualização: |
09/11/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
CHALK, P. M.; INACIO, C. T.; URQUIAGA, S.; CHEN, D. |
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Afiliação: |
PHILLIP M. CHALK, UNIVERSITY OF MELBOURNE; CAIO DE TEVES INACIO, CNPS; SEGUNDO SACRAMENTO U CABALLERO, CNPAB; DELI CHEN, UNIVERSITY OF MELBOURNE. |
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Título: |
13C isotopic fractionation during biodegradation of agricultural wastes. |
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Ano de publicação: |
2015 |
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Fonte/Imprenta: |
Isotopes in Environmental and Health Studies, v. 51, n. 2, p. 201-213, 2015. |
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DOI: |
https://doi.org/10.1080/10256016.2015.1019488 |
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Idioma: |
Inglês |
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Conteúdo: |
It has often been assumed that microbial metabolic processes are unimportant with respect to 13C isotopic fractionation in the biosphere when compared with photosynthesis. We have therefore examined the literature dealing with biodegradation by fungal and bacterial taxa of defined compounds, simple C3 and C4 sugars in artificial media and with more complex substrates of plant residues and animal excreta not in intimate contact with soil. These types of studies are fundamental to the interpretation of data from the more complex situations involving decomposition in soil or in the presence of plant roots, where the confounding effects of soil and root respiration exist. |
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Palavras-Chave: |
Biogeoquímica; Carbono-13; Compostos definidos; Fracionamento isotópico; Fungo de podridão branca; Resíduos agrícolas; Resíduos da colheita. |
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Thesagro: |
Biodegradação. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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Marc: |
LEADER 01505naa a2200265 a 4500
001 2013444
005 2021-11-09
008 2015 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1080/10256016.2015.1019488$2DOI
100 1 $aCHALK, P. M.
245 $a13C isotopic fractionation during biodegradation of agricultural wastes.$h[electronic resource]
260 $c2015
520 $aIt has often been assumed that microbial metabolic processes are unimportant with respect to 13C isotopic fractionation in the biosphere when compared with photosynthesis. We have therefore examined the literature dealing with biodegradation by fungal and bacterial taxa of defined compounds, simple C3 and C4 sugars in artificial media and with more complex substrates of plant residues and animal excreta not in intimate contact with soil. These types of studies are fundamental to the interpretation of data from the more complex situations involving decomposition in soil or in the presence of plant roots, where the confounding effects of soil and root respiration exist.
650 $aBiodegradação
653 $aBiogeoquímica
653 $aCarbono-13
653 $aCompostos definidos
653 $aFracionamento isotópico
653 $aFungo de podridão branca
653 $aResíduos agrícolas
653 $aResíduos da colheita
700 1 $aINACIO, C. T.
700 1 $aURQUIAGA, S.
700 1 $aCHEN, D.
773 $tIsotopes in Environmental and Health Studies$gv. 51, n. 2, p. 201-213, 2015.
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Registro original: |
Embrapa Solos (CNPS) |
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Biblioteca(s): |
Embrapa Agroenergia; Embrapa Milho e Sorgo. |
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Data corrente: |
19/09/2017 |
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Data da última atualização: |
15/02/2018 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 1 |
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Autoria: |
SOUSA, C. A. F. de; PAIVA, D S. de; CASARI, R. A. das C. N.; MOLINARI, H. B. C.; OLIVEIRA, N. G. de; KOBAYASHI, A. K.; MAGALHAES, P. C.; GOMIDE, R. L.; SOUZA JUNIOR, M. T. |
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Afiliação: |
CARLOS ANTONIO FERREIRA DE SOUSA, CNPAE; DAYANE SILVA DE PAIVA; RAPHAEL AUGUSTO DAS CHAGAS NOQUELI CASARI; HUGO BRUNO CORREA MOLINARI, CNPAE; NELSON GERALDO DE OLIVEIRA; ADILSON KENJI KOBAYASHI, CNPAE; PAULO CESAR MAGALHAES, CNPMS; REINALDO LUCIO GOMIDE, CNPMS; MANOEL TEIXEIRA SOUZA JUNIOR, CNPAE. |
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Título: |
A procedure for maize genotypes discrimination to drought by chlorophyll fluorescence imaging rapid light curves. |
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Ano de publicação: |
2017 |
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Fonte/Imprenta: |
Plant Methods, v. 13, p. 1-17, 2017. |
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DOI: |
10.1186/s13007-017-0209-z |
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Idioma: |
Inglês |
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Conteúdo: |
Background: Photosynthesis can be roughly separated into biochemical and photochemical processes. Both are affected by drought and can be assessed by non-invasive standard methods. Gas exchange, which mainly assesses the first process, has well-defined protocols. It is considered a standard method for evaluation of plant responses to drought. Under such stress, assessment of photochemical apparatus by chlorophyll fluorescence needs improvement to become faster and reproducible, especially in growing plants under field conditions. For this, we developed a protocol based on chlorophyll fluorescence imaging, using a rapid light curve approach. Results: Almost all parameters obtained by rapid light curves have shown statistical differences between control and drought stressed maize plants. However, most of them were affected by induction processes, relaxation rate, and/or differences in chlorophyll content; while they all were influenced by actinic light intensity on each light step of light curve. Only the normalized parameters related to photochemical and non-photochemical quenching were strongly correlated with data obtained by gas exchange, but only from the light step in which the linear electron flow reached saturation. Conclusions: The procedure developed in this study for discrimination of plant responses to water deficit stress proved to be as fast, efficient and reliable as the standard technique of gas exchange in order to discriminate the responses of maize genotypes to drought. However, unlike that, there is no need to perform daily and time consuming calibration routines. Moreover, plant acclimation to the dark is not required. The protocol can be applied to plants growing in both controlled conditions and full sunlight in the field. In addition, it generates parameters in a fast and accurate measurement process, which enables evaluating several plants in a short period of time. MenosBackground: Photosynthesis can be roughly separated into biochemical and photochemical processes. Both are affected by drought and can be assessed by non-invasive standard methods. Gas exchange, which mainly assesses the first process, has well-defined protocols. It is considered a standard method for evaluation of plant responses to drought. Under such stress, assessment of photochemical apparatus by chlorophyll fluorescence needs improvement to become faster and reproducible, especially in growing plants under field conditions. For this, we developed a protocol based on chlorophyll fluorescence imaging, using a rapid light curve approach. Results: Almost all parameters obtained by rapid light curves have shown statistical differences between control and drought stressed maize plants. However, most of them were affected by induction processes, relaxation rate, and/or differences in chlorophyll content; while they all were influenced by actinic light intensity on each light step of light curve. Only the normalized parameters related to photochemical and non-photochemical quenching were strongly correlated with data obtained by gas exchange, but only from the light step in which the linear electron flow reached saturation. Conclusions: The procedure developed in this study for discrimination of plant responses to water deficit stress proved to be as fast, efficient and reliable as the standard technique of gas exchange in order to discriminate the responses of maize genotypes... Mostrar Tudo |
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Palavras-Chave: |
Phenotyping; Water deficit; Zea mays L. |
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Thesaurus NAL: |
abiotic stress; corn; gas exchange; phenomics. |
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Categoria do assunto: |
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F Plantas e Produtos de Origem Vegetal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/168295/1/Procedure-maize.pdf
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Marc: |
LEADER 02834naa a2200313 a 4500
001 2081609
005 2018-02-15
008 2017 bl uuuu u00u1 u #d
024 7 $a10.1186/s13007-017-0209-z$2DOI
100 1 $aSOUSA, C. A. F. de
245 $aA procedure for maize genotypes discrimination to drought by chlorophyll fluorescence imaging rapid light curves.$h[electronic resource]
260 $c2017
520 $aBackground: Photosynthesis can be roughly separated into biochemical and photochemical processes. Both are affected by drought and can be assessed by non-invasive standard methods. Gas exchange, which mainly assesses the first process, has well-defined protocols. It is considered a standard method for evaluation of plant responses to drought. Under such stress, assessment of photochemical apparatus by chlorophyll fluorescence needs improvement to become faster and reproducible, especially in growing plants under field conditions. For this, we developed a protocol based on chlorophyll fluorescence imaging, using a rapid light curve approach. Results: Almost all parameters obtained by rapid light curves have shown statistical differences between control and drought stressed maize plants. However, most of them were affected by induction processes, relaxation rate, and/or differences in chlorophyll content; while they all were influenced by actinic light intensity on each light step of light curve. Only the normalized parameters related to photochemical and non-photochemical quenching were strongly correlated with data obtained by gas exchange, but only from the light step in which the linear electron flow reached saturation. Conclusions: The procedure developed in this study for discrimination of plant responses to water deficit stress proved to be as fast, efficient and reliable as the standard technique of gas exchange in order to discriminate the responses of maize genotypes to drought. However, unlike that, there is no need to perform daily and time consuming calibration routines. Moreover, plant acclimation to the dark is not required. The protocol can be applied to plants growing in both controlled conditions and full sunlight in the field. In addition, it generates parameters in a fast and accurate measurement process, which enables evaluating several plants in a short period of time.
650 $aabiotic stress
650 $acorn
650 $agas exchange
650 $aphenomics
653 $aPhenotyping
653 $aWater deficit
653 $aZea mays L
700 1 $aPAIVA, D S. de
700 1 $aCASARI, R. A. das C. N.
700 1 $aMOLINARI, H. B. C.
700 1 $aOLIVEIRA, N. G. de
700 1 $aKOBAYASHI, A. K.
700 1 $aMAGALHAES, P. C.
700 1 $aGOMIDE, R. L.
700 1 $aSOUZA JUNIOR, M. T.
773 $tPlant Methods$gv. 13, p. 1-17, 2017.
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