| |
|
|
|
Registro Completo |
|
Biblioteca(s): |
Embrapa Florestas. |
|
Data corrente: |
02/10/2008 |
|
Data da última atualização: |
02/10/2008 |
|
Autoria: |
SANTOS, E. M. R.; FRANKLIN, E.; LUIZÃO, F. J. |
|
Título: |
Litter manipulation and associated invertebrate fauna in secondary forest, central Amazonia, Brazil. |
|
Ano de publicação: |
2008 |
|
Fonte/Imprenta: |
In: INTERNATIONAL COLLOQUIUM ON SOIL ZOOLOGY, 15; INTERNATIONAL COLLOQUIUM ON APTERYGOTA, 12., 2008, Curitiba. Biodiversity, conservation and sustainabele management of soil animal: abstracts. Colombo: Embrapa Florestas. Editors: George Gardner Brown; Klaus Dieter Sautter; Renato Marques; Amarildo Pasini. 1 CD-ROM. |
|
Idioma: |
Inglês |
|
Conteúdo: |
Plant litter from selected tree species have been used for improving soil productivity in low-input
systems of secondary vegetation in central Amazon, leading to different conditions for the soil
organisms. Soil animal assemblages were monitored to test the effects of adding litter types of
contrasting nutritional quality, and periods of exposure on the development of the invertebrate
community. We established four second growth plots with 80 subplots of 3 m2 from which the
original litter was removed and replaced in 60 subplots. Twenty subplots received Hevea
brasiliensis leaves, 20 others Carapa guianensis leaves, and another 20 an equal mixture of H.
brasiliensis, C. guianensis and Vismia guianensis. Twenty subplots were left with the original
litter. Litter and mineral soil (5 cm deep) sub-horizons were collected after 45, 100, 160, 240
and 300 days of exposure. The invertebrates were extracted using Kempson apparatus. At the
day 210th, the litter was replenished to match the surrounding litter. Regression analyses showed
no significant effect of litter type, but the period of exposure did affect the community in both subhorizons.
Only after the litter replacement, the type of litter and periods of exposure affected the
community in the litter sub-horizon. Because we tried to isolate the effects of litter composition
from other large-scale phenomena, several factors interfered in the experiment and potential
problems were identified to optimize the investigation. The results suggest that the sampling
design must be improved by using a larger number of subsamples for each kind of litter within
each plot. As the scale of the experiments was too small, future manipulations should be done
on much larger scale so that their effects on ecosystem processes can be evaluated, and the
replicates need to be spread over larger areas to capture the natural variations within ecosystems.
Financial support: SHIFT/ENV 052, CNPq/PNOPG: 55 04 09/01-7, CAPES. MenosPlant litter from selected tree species have been used for improving soil productivity in low-input
systems of secondary vegetation in central Amazon, leading to different conditions for the soil
organisms. Soil animal assemblages were monitored to test the effects of adding litter types of
contrasting nutritional quality, and periods of exposure on the development of the invertebrate
community. We established four second growth plots with 80 subplots of 3 m2 from which the
original litter was removed and replaced in 60 subplots. Twenty subplots received Hevea
brasiliensis leaves, 20 others Carapa guianensis leaves, and another 20 an equal mixture of H.
brasiliensis, C. guianensis and Vismia guianensis. Twenty subplots were left with the original
litter. Litter and mineral soil (5 cm deep) sub-horizons were collected after 45, 100, 160, 240
and 300 days of exposure. The invertebrates were extracted using Kempson apparatus. At the
day 210th, the litter was replenished to match the surrounding litter. Regression analyses showed
no significant effect of litter type, but the period of exposure did affect the community in both subhorizons.
Only after the litter replacement, the type of litter and periods of exposure affected the
community in the litter sub-horizon. Because we tried to isolate the effects of litter composition
from other large-scale phenomena, several factors interfered in the experiment and potential
problems were identified to optimize the investigation. The res... Mostrar Tudo |
|
Categoria do assunto: |
-- |
|
Marc: |
LEADER 02680naa a2200145 a 4500
001 1315004
005 2008-10-02
008 2008 bl uuuu u00u1 u #d
100 1 $aSANTOS, E. M. R.
245 $aLitter manipulation and associated invertebrate fauna in secondary forest, central Amazonia, Brazil.
260 $c2008
520 $aPlant litter from selected tree species have been used for improving soil productivity in low-input systems of secondary vegetation in central Amazon, leading to different conditions for the soil organisms. Soil animal assemblages were monitored to test the effects of adding litter types of contrasting nutritional quality, and periods of exposure on the development of the invertebrate community. We established four second growth plots with 80 subplots of 3 m2 from which the original litter was removed and replaced in 60 subplots. Twenty subplots received Hevea brasiliensis leaves, 20 others Carapa guianensis leaves, and another 20 an equal mixture of H. brasiliensis, C. guianensis and Vismia guianensis. Twenty subplots were left with the original litter. Litter and mineral soil (5 cm deep) sub-horizons were collected after 45, 100, 160, 240 and 300 days of exposure. The invertebrates were extracted using Kempson apparatus. At the day 210th, the litter was replenished to match the surrounding litter. Regression analyses showed no significant effect of litter type, but the period of exposure did affect the community in both subhorizons. Only after the litter replacement, the type of litter and periods of exposure affected the community in the litter sub-horizon. Because we tried to isolate the effects of litter composition from other large-scale phenomena, several factors interfered in the experiment and potential problems were identified to optimize the investigation. The results suggest that the sampling design must be improved by using a larger number of subsamples for each kind of litter within each plot. As the scale of the experiments was too small, future manipulations should be done on much larger scale so that their effects on ecosystem processes can be evaluated, and the replicates need to be spread over larger areas to capture the natural variations within ecosystems. Financial support: SHIFT/ENV 052, CNPq/PNOPG: 55 04 09/01-7, CAPES.
700 1 $aFRANKLIN, E.
700 1 $aLUIZÃO, F. J.
773 $tIn: INTERNATIONAL COLLOQUIUM ON SOIL ZOOLOGY, 15; INTERNATIONAL COLLOQUIUM ON APTERYGOTA, 12., 2008, Curitiba. Biodiversity, conservation and sustainabele management of soil animal: abstracts. Colombo: Embrapa Florestas. Editors: George Gardner Brown; Klaus Dieter Sautter; Renato Marques; Amarildo Pasini. 1 CD-ROM.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Florestas (CNPF) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
|
Registro Completo
|
Biblioteca(s): |
Embrapa Soja. |
|
Data corrente: |
27/06/2013 |
|
Data da última atualização: |
04/04/2022 |
|
Tipo da produção científica: |
Artigo em Periódico Indexado |
|
Circulação/Nível: |
A - 1 |
|
Autoria: |
ROLLA, A. A. de P.; CARVALHO, J. de F. C.; FUGANTI-PAGLIARINI, R.; ENGELS, C.; RIO, A. do; MARIN, S. R. R.; OLIVEIRA, M. C. N. de; BENEVENTI, M. A.; MARCELINO-GUIMARÃES, F. C.; FARIAS, J. R. B.; NEUMAIER, N.; NAKASHIMA, K.; YAMAGUCHI-SHINOZAKI, K.; NEPOMUCENO, A. L. |
|
Afiliação: |
AMANDA ALVES DE PAIVA ROLLA, UEL; JOSIRLEY DE FÁTIMA CORRÊA CARVALHO; RENATA FUGANTI-PAGLIARINI; CIBELLE ENGELS, UEL; ALEXANDRE DO RIO; SILVANA REGINA ROCKENBACH MARIN, CNPSO; MARIA CRISTINA NEVES DE OLIVEIRA, CNPSO; MAGDA A. BENEVENTI, UFRGS; FRANCISMAR CORREA MARCELINO, CNPSO; JOSE RENATO BOUCAS FARIAS, CNPSO; NORMAN NEUMAIER, CNPSO; KAZUO NAKASHIMA, JIRCAS; KAZUKO YAMAGUCHI-SHINOZAKI, The University of Tokyo; ALEXANDRE LIMA NEPOMUCENO, SRI. |
|
Título: |
Phenotyping soybean plants transformed with rd29A:AtDREB1A for drought tolerance in the greenhouse and field. |
|
Ano de publicação: |
2014 |
|
Fonte/Imprenta: |
Transgenic Research, Dordrecht, v. 23, p. 75-87, 2014. |
|
Páginas: |
13 p. |
|
DOI: |
10.1007/s11248-013-9723-6 |
|
Idioma: |
Inglês |
|
Conteúdo: |
The development of drought tolerant plants is a high priority because the area suffering from drought is expected to increase in the future due to global warming. One strategy for the development of drought tolerance is to genetically engineer plants with transcription factors (TFs) that regulate the expression of several genes related to abiotic stress defense responses. This work assessed the performance of soybean plants overexpressing the TF DREB1A under drought conditions in the field and in the greenhouse. Drought was simulated in the greenhouse by progressively drying the soil of pot cultures of the P58 and P1142 lines. In the field, the performance of the P58 line and of 09D-0077, a cross between the cultivarsBR16andP58,was evaluated under four different water regimes: irrigation, natural drought (no irrigation) and water stress created using rain-out shelters in the vegetative or reproductive stages. Although the dehydration-responsive element-binding protein (DREB) plants did not outperform the cultivar BR16 in terms of yield, some yield components were increased when drought was introduced during the vegetative stage, such as the number of seeds, the number of pods with seeds and the total number of pods. The greenhouse data suggest that the higher survival rates ofDREB plants are because of lowerwater use due to lower transpiration rates under well watered conditions. Further studies are needed to better characterize the soil and atmospheric conditions under which these plants may outperform the non-transformed parental plants. MenosThe development of drought tolerant plants is a high priority because the area suffering from drought is expected to increase in the future due to global warming. One strategy for the development of drought tolerance is to genetically engineer plants with transcription factors (TFs) that regulate the expression of several genes related to abiotic stress defense responses. This work assessed the performance of soybean plants overexpressing the TF DREB1A under drought conditions in the field and in the greenhouse. Drought was simulated in the greenhouse by progressively drying the soil of pot cultures of the P58 and P1142 lines. In the field, the performance of the P58 line and of 09D-0077, a cross between the cultivarsBR16andP58,was evaluated under four different water regimes: irrigation, natural drought (no irrigation) and water stress created using rain-out shelters in the vegetative or reproductive stages. Although the dehydration-responsive element-binding protein (DREB) plants did not outperform the cultivar BR16 in terms of yield, some yield components were increased when drought was introduced during the vegetative stage, such as the number of seeds, the number of pods with seeds and the total number of pods. The greenhouse data suggest that the higher survival rates ofDREB plants are because of lowerwater use due to lower transpiration rates under well watered conditions. Further studies are needed to better characterize the soil and atmospheric conditions under whic... Mostrar Tudo |
|
Thesagro: |
Soja. |
|
Thesaurus NAL: |
Soybeans. |
|
Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
|
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/960816/1/ID-34502-PaivaRolla2014-Article-PhenotypingSoybeanPlantsTransf.pdf
|
|
Marc: |
LEADER 02540naa a2200325 a 4500
001 1960816
005 2022-04-04
008 2014 bl uuuu u00u1 u #d
024 7 $a10.1007/s11248-013-9723-6$2DOI
100 1 $aROLLA, A. A. de P.
245 $aPhenotyping soybean plants transformed with rd29A$bAtDREB1A for drought tolerance in the greenhouse and field.$h[electronic resource]
260 $c2014
300 $a13 p.
520 $aThe development of drought tolerant plants is a high priority because the area suffering from drought is expected to increase in the future due to global warming. One strategy for the development of drought tolerance is to genetically engineer plants with transcription factors (TFs) that regulate the expression of several genes related to abiotic stress defense responses. This work assessed the performance of soybean plants overexpressing the TF DREB1A under drought conditions in the field and in the greenhouse. Drought was simulated in the greenhouse by progressively drying the soil of pot cultures of the P58 and P1142 lines. In the field, the performance of the P58 line and of 09D-0077, a cross between the cultivarsBR16andP58,was evaluated under four different water regimes: irrigation, natural drought (no irrigation) and water stress created using rain-out shelters in the vegetative or reproductive stages. Although the dehydration-responsive element-binding protein (DREB) plants did not outperform the cultivar BR16 in terms of yield, some yield components were increased when drought was introduced during the vegetative stage, such as the number of seeds, the number of pods with seeds and the total number of pods. The greenhouse data suggest that the higher survival rates ofDREB plants are because of lowerwater use due to lower transpiration rates under well watered conditions. Further studies are needed to better characterize the soil and atmospheric conditions under which these plants may outperform the non-transformed parental plants.
650 $aSoybeans
650 $aSoja
700 1 $aCARVALHO, J. de F. C.
700 1 $aFUGANTI-PAGLIARINI, R.
700 1 $aENGELS, C.
700 1 $aRIO, A. do
700 1 $aMARIN, S. R. R.
700 1 $aOLIVEIRA, M. C. N. de
700 1 $aBENEVENTI, M. A.
700 1 $aMARCELINO-GUIMARÃES, F. C.
700 1 $aFARIAS, J. R. B.
700 1 $aNEUMAIER, N.
700 1 $aNAKASHIMA, K.
700 1 $aYAMAGUCHI-SHINOZAKI, K.
700 1 $aNEPOMUCENO, A. L.
773 $tTransgenic Research, Dordrecht$gv. 23, p. 75-87, 2014.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Soja (CNPSO) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
Fechar
|
| Expressão de busca inválida. Verifique!!! |
|
|
