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Registro Completo |
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Biblioteca(s): |
Embrapa Meio Ambiente. |
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Data corrente: |
05/12/2012 |
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Data da última atualização: |
05/12/2012 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
MORAES, R. M.; MELO, I. S. de; SUMYANTO, J.; CHANDRA, S.; JOSHI, V. |
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Afiliação: |
RITA M. MORAES, University of Mississippi; ITAMAR SOARES DE MELO, CNPMA; JOKO SUMYANTO, University of Mississippi; SUMAN CHANDRA, University of Mississippi; VAISHALI JOSHI, University of Mississippi. |
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Título: |
Bacterial community associated with autotrophic and heterotrophic cultures of medicinal plant smallanthus sonchifolius (Yacon). |
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Ano de publicação: |
2012 |
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Fonte/Imprenta: |
American Journal of Plant Sciences, v. 3, n. 10, p. 1382-1389, 2012. |
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Idioma: |
Inglês |
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Conteúdo: |
Several unfruitful attempts to grow axenic shoot cultures of Smallanthus sonchifolius, also known as yacon, were made before healthy shoots grew in association with bacteria on half strength Murashigue and Skoog media supplemented with 2.2 µM benzylaminopurine. Twenty-one bacterial isolates were obtained from in vitro S. sonchifolius plantlets, eight of these isolates were identified as Flavimonas oryzihabitans, Curtobacterium pusillum, Sphingomonas paucimobilis, and Microbacterium imperiale. These microorganisms produced indole acetic acid (IAA) at amounts varying between 8.89 to 47.45 µg/mL, reason for being classified as plant growth promoting bacteria (PGPB). The results show that buds associated with bacteria cultured on sucrose free media produced 3.77 new roots measuring 18.33 cm in length after a 30-day growing period. In contrast, buds growing on sucrose supplemented media, the number of roots induced was higher (6.67 to 14 roots/explant) but shorter in length, 4.67 to 5.83 cm. During plant acclimatization to soil, photosynthesis and water efficiency were measured showing that the plants were healthy and vigorous. A slightly higher rate of photosynthesis and water use efficiency was recorded in the plants produced on heterotrophic conditions as compared to plants grown in sucrose free media. Plants adapted well in the soil demonstrating that the PGPB community associated to S. sonchifolius in shoot cultures was not harmful to plant production. The purpose of this study was to demonstrate that the bacteria associated with in vitro S. sonchifolius shoot cultures was not the result of microbial contamination, but rather from symbiotic associations that extended from cultivation in the greenhouse, to culture and back to soil. This is the first report to show that autotrophic cultures may represent a viable alternative to grow healthy plants without eliminating beneficial bacteria associated with the host. MenosSeveral unfruitful attempts to grow axenic shoot cultures of Smallanthus sonchifolius, also known as yacon, were made before healthy shoots grew in association with bacteria on half strength Murashigue and Skoog media supplemented with 2.2 µM benzylaminopurine. Twenty-one bacterial isolates were obtained from in vitro S. sonchifolius plantlets, eight of these isolates were identified as Flavimonas oryzihabitans, Curtobacterium pusillum, Sphingomonas paucimobilis, and Microbacterium imperiale. These microorganisms produced indole acetic acid (IAA) at amounts varying between 8.89 to 47.45 µg/mL, reason for being classified as plant growth promoting bacteria (PGPB). The results show that buds associated with bacteria cultured on sucrose free media produced 3.77 new roots measuring 18.33 cm in length after a 30-day growing period. In contrast, buds growing on sucrose supplemented media, the number of roots induced was higher (6.67 to 14 roots/explant) but shorter in length, 4.67 to 5.83 cm. During plant acclimatization to soil, photosynthesis and water efficiency were measured showing that the plants were healthy and vigorous. A slightly higher rate of photosynthesis and water use efficiency was recorded in the plants produced on heterotrophic conditions as compared to plants grown in sucrose free media. Plants adapted well in the soil demonstrating that the PGPB community associated to S. sonchifolius in shoot cultures was not harmful to plant production. The purpose of this st... Mostrar Tudo |
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Palavras-Chave: |
Çido indolacético; IAA; Yacon. |
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Thesagro: |
Bactéria; Planta medicinal. |
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Thesaurus Nal: |
Endophytes; Indole acetic acid; Micropropagation; Smallanthus sonchifolius. |
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Categoria do assunto: |
S Ciências Biológicas |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/71469/1/2012AP37.pdf
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Marc: |
LEADER 02774naa a2200277 a 4500
001 1941315
005 2012-12-05
008 2012 bl uuuu u00u1 u #d
100 1 $aMORAES, R. M.
245 $aBacterial community associated with autotrophic and heterotrophic cultures of medicinal plant smallanthus sonchifolius (Yacon).$h[electronic resource]
260 $c2012
520 $aSeveral unfruitful attempts to grow axenic shoot cultures of Smallanthus sonchifolius, also known as yacon, were made before healthy shoots grew in association with bacteria on half strength Murashigue and Skoog media supplemented with 2.2 µM benzylaminopurine. Twenty-one bacterial isolates were obtained from in vitro S. sonchifolius plantlets, eight of these isolates were identified as Flavimonas oryzihabitans, Curtobacterium pusillum, Sphingomonas paucimobilis, and Microbacterium imperiale. These microorganisms produced indole acetic acid (IAA) at amounts varying between 8.89 to 47.45 µg/mL, reason for being classified as plant growth promoting bacteria (PGPB). The results show that buds associated with bacteria cultured on sucrose free media produced 3.77 new roots measuring 18.33 cm in length after a 30-day growing period. In contrast, buds growing on sucrose supplemented media, the number of roots induced was higher (6.67 to 14 roots/explant) but shorter in length, 4.67 to 5.83 cm. During plant acclimatization to soil, photosynthesis and water efficiency were measured showing that the plants were healthy and vigorous. A slightly higher rate of photosynthesis and water use efficiency was recorded in the plants produced on heterotrophic conditions as compared to plants grown in sucrose free media. Plants adapted well in the soil demonstrating that the PGPB community associated to S. sonchifolius in shoot cultures was not harmful to plant production. The purpose of this study was to demonstrate that the bacteria associated with in vitro S. sonchifolius shoot cultures was not the result of microbial contamination, but rather from symbiotic associations that extended from cultivation in the greenhouse, to culture and back to soil. This is the first report to show that autotrophic cultures may represent a viable alternative to grow healthy plants without eliminating beneficial bacteria associated with the host.
650 $aEndophytes
650 $aIndole acetic acid
650 $aMicropropagation
650 $aSmallanthus sonchifolius
650 $aBactéria
650 $aPlanta medicinal
653 $aÇido indolacético
653 $aIAA
653 $aYacon
700 1 $aMELO, I. S. de
700 1 $aSUMYANTO, J.
700 1 $aCHANDRA, S.
700 1 $aJOSHI, V.
773 $tAmerican Journal of Plant Sciences$gv. 3, n. 10, p. 1382-1389, 2012.
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Registro original: |
Embrapa Meio Ambiente (CNPMA) |
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Registro Completo
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Biblioteca(s): |
Embrapa Cerrados. |
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Data corrente: |
13/02/2017 |
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Data da última atualização: |
25/05/2017 |
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Tipo da produção científica: |
Capítulo em Livro Técnico-Científico |
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Autoria: |
AGERBEEK, B.; RODRIGUES, L. N.; DAM, J. C. van; DIJKSMA, R. |
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Afiliação: |
Bas Agerbeek, Universidade de Wageningen; LINEU NEIVA RODRIGUES, CPAC; Joseph Cornelis van Dam, Universidade de Wageningen; Roel Dijksma, Universidade de Wageningen. |
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Título: |
Hydrologic model of the Upper Preto River Basin: calibration and validation. |
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Complemento do título: |
Modelagem hidrológica do Alto Rio Preto: calibração e validação. |
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Ano de publicação: |
2016 |
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Fonte/Imprenta: |
In: SEMINÁRIO DA REDE AGROHIDRO, 4., 2016, Brasília, DF. Água e agricultura: incertezas e desafios para a sustentabilidade frente às mudanças do clima e do uso da terra: anais. Planaltina, DF: Embrapa Cerrados, 2016. |
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Páginas: |
p. 251-258. |
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Idioma: |
Inglês |
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Conteúdo: |
O Distrito Federal (DF) é uma região que vem experimentando mudanças rápidas devido ao crescimento populacional e urbanização. A agricultura irrigada é a principal usuária nessa região, apresentando demandas elevadas, principalmente durante a estação seca, quando a demanda de todos os setores aumenta. Assim, é importante compreender melhor a hidrologia da região para propor estratégias de mitigação e adaptação. O objetivo deste estudo foi desenvolver, calibrar e validar um modelo de simulação hidrológica para o alto rio Preto. Para isto, utilizou-se o modelo hidrológico SWAT. O rio Preto é um importante tributário do Paracatu, que, por sua vez, é o principal afluente do São Francisco. O alto rio Preto, modelado nesse estudo, tem uma área de drenagem de aproximadamente 3.300 km2 e possui uma vazão média variando entre 50 m3/s e 200 m3/s. O modelo foi calibrado e validado utilizando dados diários de vazão da estação Fazenda Limeira para o período de 1986 a 1984. O modelo apresentou um desempenho satisfatório com NSE=0,73, PBIAS=-9,5% e RSR=0,5 para o período de validação. Abstract: The Distrito Federal is a region experiencing rapid changes due to population growth and urbanization. Irrigated agriculture is the main water user in the region, with high demands, especially during the dry season when demand among all sectors increases. In addition, climate change is expected to impact the water resources of the DF. Thus, it is important to better understand the hydrology of this region to propose mitigation and adaptation strategies. The objective of this study was to develop, calibrate and validate a hydrologic simulation model for the upper Peto River basin. The model was developed using the SWAT (Soil Water Assessment Tool) hydrological model. The Preto River is an important tributary of Paracatu, which is the main tributary of the São Francisco. The drainage area of the upper Preto river is about 3,300 km2. At the outlet the river has an average discharge varying between 50 m3/s and 200 m3/s. The model was calibrated and validated using observed daily streamflow from the Fazenda Limeira station for the period of 1986 to 1994. The model performed satisfactorily with an NSE=0.73, PBIAS=-9.5% and RSR=0.5 goodness-of-fit between simulated streamflow and observed streamflow for the validation period. MenosO Distrito Federal (DF) é uma região que vem experimentando mudanças rápidas devido ao crescimento populacional e urbanização. A agricultura irrigada é a principal usuária nessa região, apresentando demandas elevadas, principalmente durante a estação seca, quando a demanda de todos os setores aumenta. Assim, é importante compreender melhor a hidrologia da região para propor estratégias de mitigação e adaptação. O objetivo deste estudo foi desenvolver, calibrar e validar um modelo de simulação hidrológica para o alto rio Preto. Para isto, utilizou-se o modelo hidrológico SWAT. O rio Preto é um importante tributário do Paracatu, que, por sua vez, é o principal afluente do São Francisco. O alto rio Preto, modelado nesse estudo, tem uma área de drenagem de aproximadamente 3.300 km2 e possui uma vazão média variando entre 50 m3/s e 200 m3/s. O modelo foi calibrado e validado utilizando dados diários de vazão da estação Fazenda Limeira para o período de 1986 a 1984. O modelo apresentou um desempenho satisfatório com NSE=0,73, PBIAS=-9,5% e RSR=0,5 para o período de validação. Abstract: The Distrito Federal is a region experiencing rapid changes due to population growth and urbanization. Irrigated agriculture is the main water user in the region, with high demands, especially during the dry season when demand among all sectors increases. In addition, climate change is expected to impact the water resources of the DF. Thus, it is important to better understand the hydrology of this ... Mostrar Tudo |
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Palavras-Chave: |
Distrito Federal; Modelagem hidrológica; Nash sutcliffe; SWAT. |
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Thesagro: |
Bacia Hidrográfica; Cerrado. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/155410/1/Agua-e-agricultura-pg251-258.pdf
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Marc: |
LEADER 03221naa a2200241 a 4500
001 2063720
005 2017-05-25
008 2016 bl uuuu u00u1 u #d
100 1 $aAGERBEEK, B.
245 $aHydrologic model of the Upper Preto River Basin$bcalibration and validation.$h[electronic resource]
260 $c2016
300 $ap. 251-258.
520 $aO Distrito Federal (DF) é uma região que vem experimentando mudanças rápidas devido ao crescimento populacional e urbanização. A agricultura irrigada é a principal usuária nessa região, apresentando demandas elevadas, principalmente durante a estação seca, quando a demanda de todos os setores aumenta. Assim, é importante compreender melhor a hidrologia da região para propor estratégias de mitigação e adaptação. O objetivo deste estudo foi desenvolver, calibrar e validar um modelo de simulação hidrológica para o alto rio Preto. Para isto, utilizou-se o modelo hidrológico SWAT. O rio Preto é um importante tributário do Paracatu, que, por sua vez, é o principal afluente do São Francisco. O alto rio Preto, modelado nesse estudo, tem uma área de drenagem de aproximadamente 3.300 km2 e possui uma vazão média variando entre 50 m3/s e 200 m3/s. O modelo foi calibrado e validado utilizando dados diários de vazão da estação Fazenda Limeira para o período de 1986 a 1984. O modelo apresentou um desempenho satisfatório com NSE=0,73, PBIAS=-9,5% e RSR=0,5 para o período de validação. Abstract: The Distrito Federal is a region experiencing rapid changes due to population growth and urbanization. Irrigated agriculture is the main water user in the region, with high demands, especially during the dry season when demand among all sectors increases. In addition, climate change is expected to impact the water resources of the DF. Thus, it is important to better understand the hydrology of this region to propose mitigation and adaptation strategies. The objective of this study was to develop, calibrate and validate a hydrologic simulation model for the upper Peto River basin. The model was developed using the SWAT (Soil Water Assessment Tool) hydrological model. The Preto River is an important tributary of Paracatu, which is the main tributary of the São Francisco. The drainage area of the upper Preto river is about 3,300 km2. At the outlet the river has an average discharge varying between 50 m3/s and 200 m3/s. The model was calibrated and validated using observed daily streamflow from the Fazenda Limeira station for the period of 1986 to 1994. The model performed satisfactorily with an NSE=0.73, PBIAS=-9.5% and RSR=0.5 goodness-of-fit between simulated streamflow and observed streamflow for the validation period.
650 $aBacia Hidrográfica
650 $aCerrado
653 $aDistrito Federal
653 $aModelagem hidrológica
653 $aNash sutcliffe
653 $aSWAT
700 1 $aRODRIGUES, L. N.
700 1 $aDAM, J. C. van
700 1 $aDIJKSMA, R.
773 $tIn: SEMINÁRIO DA REDE AGROHIDRO, 4., 2016, Brasília, DF. Água e agricultura: incertezas e desafios para a sustentabilidade frente às mudanças do clima e do uso da terra: anais. Planaltina, DF: Embrapa Cerrados, 2016.
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