| |
|
|
|
Registro Completo |
|
Biblioteca(s): |
Embrapa Agrobiologia. |
|
Data corrente: |
23/10/2003 |
|
Data da última atualização: |
23/10/2003 |
|
Autoria: |
BODDEY, R. M.; URQUIAGA, S.; ALVES, B. J. R.; REIS, V. M. |
|
Título: |
Endophytic nitrogen fixation in sugarcane: Present knowledge and future applications. |
|
Ano de publicação: |
2003 |
|
Fonte/Imprenta: |
Plant and Soil, Dordrecht, v. 252, p. 139-149, 2003. |
|
Idioma: |
Inglês |
|
Conteúdo: |
In Brazil the long-term continuous cultivation of sugarcane with low N fertilised inputs, without apparent depletion of soil-N reserves, led to the suggestion that N2-fixing bacteria associated with the plants may be the source of agronomically significant N inputs to this crop. From the 1950s to 1970s, considerable numbers of N2-fixing bacteria were found to be associated with the crop, but it was not until the late 1980s that evidence from N balance and ISN dilution experiments showed that some Brazilian varieties of sugarcane were able to obtain significant contributions from this source. The results of these studies renewed the efforts to search for N2-fixing bacteria, but this time the emphasis was on those diazotrophs that infected the interior of the plants. Within a few years several species of such .endophytic diazotrophs' were discovered including Gluconacetobacter diazotrophicus, Herbaspirillum .Seropedicae, H. rubrisubalbicans and Burkholderia sp. Work has continued on these endophytes within sugarcane plants, but to date little success has been attained in elucidating which endophyte is responsible for the observed BNF and in what site, or sites, within the cane plants the N2 fixation mainly occurs. Until such important question8 are answered further developments or extension of this novel N2-fixing system to other economically important non-legumes (e.g. cereals) will be seriously hindered. As far as application of present knowledge to maximise BNF with sugarcane is concerned, molybdenum is an essential micronutrient. An abundant water supply favours high BNF inputs, and the best medium term strategy to increase BNF would appear to be based on cultivar selection on irrigated N deficient soils fertilised with Mo. MenosIn Brazil the long-term continuous cultivation of sugarcane with low N fertilised inputs, without apparent depletion of soil-N reserves, led to the suggestion that N2-fixing bacteria associated with the plants may be the source of agronomically significant N inputs to this crop. From the 1950s to 1970s, considerable numbers of N2-fixing bacteria were found to be associated with the crop, but it was not until the late 1980s that evidence from N balance and ISN dilution experiments showed that some Brazilian varieties of sugarcane were able to obtain significant contributions from this source. The results of these studies renewed the efforts to search for N2-fixing bacteria, but this time the emphasis was on those diazotrophs that infected the interior of the plants. Within a few years several species of such .endophytic diazotrophs' were discovered including Gluconacetobacter diazotrophicus, Herbaspirillum .Seropedicae, H. rubrisubalbicans and Burkholderia sp. Work has continued on these endophytes within sugarcane plants, but to date little success has been attained in elucidating which endophyte is responsible for the observed BNF and in what site, or sites, within the cane plants the N2 fixation mainly occurs. Until such important question8 are answered further developments or extension of this novel N2-fixing system to other economically important non-legumes (e.g. cereals) will be seriously hindered. As far as application of present knowledge to maximise BNF with sugarca... Mostrar Tudo |
|
Palavras-Chave: |
Bactéria endofítica; Biological nitrogen fixation; BNF; Endophytic bacteria; FBN; Fixação biológica de nitrogênio; Herbaspirillum spp; Mo. |
|
Thesagro: |
Cana de Açúcar; Molibdênio. |
|
Thesaurus Nal: |
Gluconacetobacter diazotrophicus; molybdenum; sugarcane. |
|
Categoria do assunto: |
-- |
|
Marc: |
LEADER 02633naa a2200313 a 4500
001 1624720
005 2003-10-23
008 2003 bl --- 0-- u #d
100 1 $aBODDEY, R. M.
245 $aEndophytic nitrogen fixation in sugarcane$bPresent knowledge and future applications.
260 $c2003
520 $aIn Brazil the long-term continuous cultivation of sugarcane with low N fertilised inputs, without apparent depletion of soil-N reserves, led to the suggestion that N2-fixing bacteria associated with the plants may be the source of agronomically significant N inputs to this crop. From the 1950s to 1970s, considerable numbers of N2-fixing bacteria were found to be associated with the crop, but it was not until the late 1980s that evidence from N balance and ISN dilution experiments showed that some Brazilian varieties of sugarcane were able to obtain significant contributions from this source. The results of these studies renewed the efforts to search for N2-fixing bacteria, but this time the emphasis was on those diazotrophs that infected the interior of the plants. Within a few years several species of such .endophytic diazotrophs' were discovered including Gluconacetobacter diazotrophicus, Herbaspirillum .Seropedicae, H. rubrisubalbicans and Burkholderia sp. Work has continued on these endophytes within sugarcane plants, but to date little success has been attained in elucidating which endophyte is responsible for the observed BNF and in what site, or sites, within the cane plants the N2 fixation mainly occurs. Until such important question8 are answered further developments or extension of this novel N2-fixing system to other economically important non-legumes (e.g. cereals) will be seriously hindered. As far as application of present knowledge to maximise BNF with sugarcane is concerned, molybdenum is an essential micronutrient. An abundant water supply favours high BNF inputs, and the best medium term strategy to increase BNF would appear to be based on cultivar selection on irrigated N deficient soils fertilised with Mo.
650 $aGluconacetobacter diazotrophicus
650 $amolybdenum
650 $asugarcane
650 $aCana de Açúcar
650 $aMolibdênio
653 $aBactéria endofítica
653 $aBiological nitrogen fixation
653 $aBNF
653 $aEndophytic bacteria
653 $aFBN
653 $aFixação biológica de nitrogênio
653 $aHerbaspirillum spp
653 $aMo
700 1 $aURQUIAGA, S.
700 1 $aALVES, B. J. R.
700 1 $aREIS, V. M.
773 $tPlant and Soil, Dordrecht$gv. 252, p. 139-149, 2003.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Agrobiologia (CNPAB) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
|
| Registros recuperados : 728 | |
| 162. |  | ZOTARELLi, L.; TORRES, E.; BODDEY, R. M.; URQUIAGA, S.; ALVES, B. J. R. Influence of no tillage and conventional tillage and crop rotation on soil carbon and nitrogen accumulation and soil aggregation in a rhodic ferralsol. Seropédica: Embrapa Agrobiologia, 2006. 4 p. Trabalho apresentado no 18th World Congress of Soil Science, Philadelphia, Pennsylvania, USA, 9 a 15 de julho de 2006.| Biblioteca(s): Embrapa Agrobiologia. |
|   |
| 167. | | ZOTARELLI, L.; ALVES, B. J. R.; URQUIAGA, S.; BODDEY, R. M.; SIX, J. Impact of tillage and crop rotation on light fraction and intra-aggregate soil organic matter in two oxisols. Soil & Tillage Research, Amsterdam, v. 95, n. 1-2, p. 196-206, sept. 2007. Parceria: Colorado State University, UFRRJ, University of California.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: Internacional - A |
| Biblioteca(s): Embrapa Agrobiologia. |
|  |
| Registros recuperados : 728 | |
|
| Nenhum registro encontrado para a expressão de busca informada. |
|
|
