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 | Acesso ao texto completo restrito à biblioteca da Embrapa Milho e Sorgo. Para informações adicionais entre em contato com cnpms.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Milho e Sorgo. |
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Data corrente: |
28/10/2002 |
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Data da última atualização: |
07/06/2018 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
OLIVEIRA, E. de; MAGALHAES, P. C.; GOMIDE, R. L.; VASCONCELOS, C. A.; SOUZA, I. R. P.; OLIVEIRA, C. M.; CRUZ, I.; SCHAFFERT, R. E. |
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Afiliação: |
ELIZABETH DE OLIVEIRA SABATO, CNPMS; PAULO CESAR MAGALHAES, CNPMS; REINALDO LUCIO GOMIDE, CNPMS; ISABEL REGINA PRAZERES DE SOUZA, CNPMS; IVAN CRUZ, CNPMS; ROBERT EUGENE SCHAFFERT, CNPMS. |
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Título: |
Growth and nutrition of mollicute-infected maize. |
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Ano de publicação: |
2002 |
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Fonte/Imprenta: |
Plant Disease, St. Paul, v. 86, p. 945-949, Sept. 2002. |
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Idioma: |
Inglês |
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Conteúdo: |
Maize bushy stunt phytoplasma (MBSP) and corn stunt spiroplasma (CSS) diseases are widespread in Brazil. The leafhopper Dalbulus maidis is the insect vector for these pathogenic mollicutes. The effects of these diseases on the development of maize plants and the possible interaction of soil water availability on these effects were evaluated in two experiments carried out on potted plants. Experiment I was carried out in a 2 x 4 factorial, where factor I corresponded to healthy and mollicute-infected plants and factor 2 to the maintenance of 40, 60, 80, and 100% of the total soil water availability. Leafhoppers collected from a field with high incidence of these diseases were used to inoculate plants with mollicutes. There were three treatments in experiment 2: healthy plants, plants infected with phytoplasma, and plants infected with spiroplasma. MBSP was predominant in experiment 1. The infected plants grew less and lowered nutrient uptake, in distinct proportions, indicating a differential effect of mollicutes on nutrient uptake independent of available soil water. Soil water availability did not significantly affect plant growth and nutrient uptake or mollicute infection. The results indicated that plants infected by mollicutes contained less protein than healthy plants. Experiment 2 showed a reduction in growth of plants infected with mollicutes and less nutrient uptake by spiroplasma-infected plants. The results showed a detrimental effect of the spiroplasma on Mg uptake. Both experiments showed more water retention by infected plants than by healthy ones. These experiments clearly demonstrated that reduced plant growth and nutrient uptake are major effects on plants infected with MBSP and CSS. MenosMaize bushy stunt phytoplasma (MBSP) and corn stunt spiroplasma (CSS) diseases are widespread in Brazil. The leafhopper Dalbulus maidis is the insect vector for these pathogenic mollicutes. The effects of these diseases on the development of maize plants and the possible interaction of soil water availability on these effects were evaluated in two experiments carried out on potted plants. Experiment I was carried out in a 2 x 4 factorial, where factor I corresponded to healthy and mollicute-infected plants and factor 2 to the maintenance of 40, 60, 80, and 100% of the total soil water availability. Leafhoppers collected from a field with high incidence of these diseases were used to inoculate plants with mollicutes. There were three treatments in experiment 2: healthy plants, plants infected with phytoplasma, and plants infected with spiroplasma. MBSP was predominant in experiment 1. The infected plants grew less and lowered nutrient uptake, in distinct proportions, indicating a differential effect of mollicutes on nutrient uptake independent of available soil water. Soil water availability did not significantly affect plant growth and nutrient uptake or mollicute infection. The results indicated that plants infected by mollicutes contained less protein than healthy plants. Experiment 2 showed a reduction in growth of plants infected with mollicutes and less nutrient uptake by spiroplasma-infected plants. The results showed a detrimental effect of the spiroplasma on Mg uptak... Mostrar Tudo |
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Palavras-Chave: |
Molicute. |
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Thesagro: |
Crescimento; Milho; Planta. |
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Thesaurus Nal: |
Spiroplasma. |
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Categoria do assunto: |
H Saúde e Patologia |
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Marc: |
LEADER 02427naa a2200265 a 4500
001 1486437
005 2018-06-07
008 2002 bl uuuu u00u1 u #d
100 1 $aOLIVEIRA, E. de
245 $aGrowth and nutrition of mollicute-infected maize.$h[electronic resource]
260 $c2002
520 $aMaize bushy stunt phytoplasma (MBSP) and corn stunt spiroplasma (CSS) diseases are widespread in Brazil. The leafhopper Dalbulus maidis is the insect vector for these pathogenic mollicutes. The effects of these diseases on the development of maize plants and the possible interaction of soil water availability on these effects were evaluated in two experiments carried out on potted plants. Experiment I was carried out in a 2 x 4 factorial, where factor I corresponded to healthy and mollicute-infected plants and factor 2 to the maintenance of 40, 60, 80, and 100% of the total soil water availability. Leafhoppers collected from a field with high incidence of these diseases were used to inoculate plants with mollicutes. There were three treatments in experiment 2: healthy plants, plants infected with phytoplasma, and plants infected with spiroplasma. MBSP was predominant in experiment 1. The infected plants grew less and lowered nutrient uptake, in distinct proportions, indicating a differential effect of mollicutes on nutrient uptake independent of available soil water. Soil water availability did not significantly affect plant growth and nutrient uptake or mollicute infection. The results indicated that plants infected by mollicutes contained less protein than healthy plants. Experiment 2 showed a reduction in growth of plants infected with mollicutes and less nutrient uptake by spiroplasma-infected plants. The results showed a detrimental effect of the spiroplasma on Mg uptake. Both experiments showed more water retention by infected plants than by healthy ones. These experiments clearly demonstrated that reduced plant growth and nutrient uptake are major effects on plants infected with MBSP and CSS.
650 $aSpiroplasma
650 $aCrescimento
650 $aMilho
650 $aPlanta
653 $aMolicute
700 1 $aMAGALHAES, P. C.
700 1 $aGOMIDE, R. L.
700 1 $aVASCONCELOS, C. A.
700 1 $aSOUZA, I. R. P.
700 1 $aOLIVEIRA, C. M.
700 1 $aCRUZ, I.
700 1 $aSCHAFFERT, R. E.
773 $tPlant Disease, St. Paul$gv. 86, p. 945-949, Sept. 2002.
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Embrapa Milho e Sorgo (CNPMS) |
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Registro Completo
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Biblioteca(s): |
Embrapa Meio Ambiente. |
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Data corrente: |
19/08/2021 |
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Data da última atualização: |
25/08/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
B - 4 |
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Autoria: |
SAMPAIO, F. G.; ARAUJO, C. A. S. de; DALLAGO, B. S. L.; STECH, J. L.; LORENZZETTI, J. A.; ALCÂNTARA, E.; LOSEKANN, M. E.; MARIN, D. B.; LEÃO, J. A. D.; BUENO, G. W. |
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Afiliação: |
FERNANDA GARCIA SAMPAIO, CNPMA; CARLOS ALBERTO SAMPAIO DE ARAUJO, Université du Québec; BRUNO STÉFANO LIMA DALLAGO, UnB; JOSÉ LUIZ STECH, INPE; JOÃO ANTÔNIO LORENZZETTI, INPE; ENNER ALCÂNTARA; MARCOS ELISEU LOSEKANN, CNPMA; DIEGO BEDIN MARIN, UFLA; JOAQUIM ANTÔNIO DIONÍSIO LEÃO, INPE; GUILHERME WOLFF BUENO, CAUNESP. |
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Título: |
Unveiling low-to-high-frequency data sampling caveats for aquaculture environmental monitoring and management. |
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Ano de publicação: |
2021 |
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Fonte/Imprenta: |
Aquaculture Reports, v. 20, article 100764, 2021. |
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ISSN: |
2352-5134 |
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DOI: |
https://doi.org/10.1016/j.aqrep.2021.100764 |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract: Aiming at the sustainability of aquaculture production, producers should adopt tools and protocols for environmental monitoring and management of these enterprises. There are currently issues concerning the efficacy of data collection procedures and limnological sampling at low frequency, which is widely used by managers and aquaculture surveillance agencies. In this context, the present study evaluated the effectiveness of high-frequency (HF) and low-frequency (LF) limnological monitoring. For the HF, autonomous data collection platforms (ADCP) were installed in a tropical reservoir, four ADCP in areas with fish production (WFP), and one ADCP in an area free of fish production (FFP, control). For both sampling methods, the temperature (Temp), pH, dissolved oxygen (DO), turbidity (Tbt), electrical conductivity (EC), and chlorophyll-a (Chl-a) were sampled at a depth of 1.5 m from the water surface. While the HF used a multiparameter probe, recording each parameter every 10 min, the LF method consisted of monthly data acquisitions of the same settings using water sampling techniques for further measurement in the laboratory. The comparison of the sampling frequency and methods revealed different profiles for all measured parameters during the monitored period. The average values of the daily amplitude of variation differed between the two monitoring strategies for water temperature, pH, DO, Tbt, and Chl-a. Comparison of the results showed that the HF limnological monitoring allowed us to create a more accurate variation profile of the water quality variables measured. The ADCP is a useful strategy that can be used to capture the influences of fish production and to bring essential water quality changes for fish management. The evaluations with LF did not demonstrate the natural variability of the measured parameters, being an ineffective tool for environmental monitoring of fish production. MenosAbstract: Aiming at the sustainability of aquaculture production, producers should adopt tools and protocols for environmental monitoring and management of these enterprises. There are currently issues concerning the efficacy of data collection procedures and limnological sampling at low frequency, which is widely used by managers and aquaculture surveillance agencies. In this context, the present study evaluated the effectiveness of high-frequency (HF) and low-frequency (LF) limnological monitoring. For the HF, autonomous data collection platforms (ADCP) were installed in a tropical reservoir, four ADCP in areas with fish production (WFP), and one ADCP in an area free of fish production (FFP, control). For both sampling methods, the temperature (Temp), pH, dissolved oxygen (DO), turbidity (Tbt), electrical conductivity (EC), and chlorophyll-a (Chl-a) were sampled at a depth of 1.5 m from the water surface. While the HF used a multiparameter probe, recording each parameter every 10 min, the LF method consisted of monthly data acquisitions of the same settings using water sampling techniques for further measurement in the laboratory. The comparison of the sampling frequency and methods revealed different profiles for all measured parameters during the monitored period. The average values of the daily amplitude of variation differed between the two monitoring strategies for water temperature, pH, DO, Tbt, and Chl-a. Comparison of the results showed that the HF limnological mon... Mostrar Tudo |
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Palavras-Chave: |
High-frequency monitoring; Monitoramento de alta frequência. |
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Thesagro: |
Aquicultura; Limnologia; Qualidade da Água. |
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Thesaurus NAL: |
Aquaculture; Environmental monitoring; Limnology; Water quality analysis. |
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Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
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Marc: |
LEADER 03032naa a2200361 a 4500
001 2133734
005 2021-08-25
008 2021 bl uuuu u00u1 u #d
022 $a2352-5134
024 7 $ahttps://doi.org/10.1016/j.aqrep.2021.100764$2DOI
100 1 $aSAMPAIO, F. G.
245 $aUnveiling low-to-high-frequency data sampling caveats for aquaculture environmental monitoring and management.$h[electronic resource]
260 $c2021
520 $aAbstract: Aiming at the sustainability of aquaculture production, producers should adopt tools and protocols for environmental monitoring and management of these enterprises. There are currently issues concerning the efficacy of data collection procedures and limnological sampling at low frequency, which is widely used by managers and aquaculture surveillance agencies. In this context, the present study evaluated the effectiveness of high-frequency (HF) and low-frequency (LF) limnological monitoring. For the HF, autonomous data collection platforms (ADCP) were installed in a tropical reservoir, four ADCP in areas with fish production (WFP), and one ADCP in an area free of fish production (FFP, control). For both sampling methods, the temperature (Temp), pH, dissolved oxygen (DO), turbidity (Tbt), electrical conductivity (EC), and chlorophyll-a (Chl-a) were sampled at a depth of 1.5 m from the water surface. While the HF used a multiparameter probe, recording each parameter every 10 min, the LF method consisted of monthly data acquisitions of the same settings using water sampling techniques for further measurement in the laboratory. The comparison of the sampling frequency and methods revealed different profiles for all measured parameters during the monitored period. The average values of the daily amplitude of variation differed between the two monitoring strategies for water temperature, pH, DO, Tbt, and Chl-a. Comparison of the results showed that the HF limnological monitoring allowed us to create a more accurate variation profile of the water quality variables measured. The ADCP is a useful strategy that can be used to capture the influences of fish production and to bring essential water quality changes for fish management. The evaluations with LF did not demonstrate the natural variability of the measured parameters, being an ineffective tool for environmental monitoring of fish production.
650 $aAquaculture
650 $aEnvironmental monitoring
650 $aLimnology
650 $aWater quality analysis
650 $aAquicultura
650 $aLimnologia
650 $aQualidade da Água
653 $aHigh-frequency monitoring
653 $aMonitoramento de alta frequência
700 1 $aARAUJO, C. A. S. de
700 1 $aDALLAGO, B. S. L.
700 1 $aSTECH, J. L.
700 1 $aLORENZZETTI, J. A.
700 1 $aALCÂNTARA, E.
700 1 $aLOSEKANN, M. E.
700 1 $aMARIN, D. B.
700 1 $aLEÃO, J. A. D.
700 1 $aBUENO, G. W.
773 $tAquaculture Reports$gv. 20, article 100764, 2021.
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