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Registro Completo |
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Biblioteca(s): |
Embrapa Soja. |
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Data corrente: |
27/10/1992 |
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Data da última atualização: |
27/10/1992 |
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Autoria: |
BARBOUR, W. M.; HATTERMANN, D. R.; STACEY, G. |
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Afiliação: |
DuPont Haskell Laboratory, Newark, DE 19714. |
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Título: |
Chemotaxis of Bradyrhizobium japonicum to soybean exudates. |
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Ano de publicação: |
1991 |
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Fonte/Imprenta: |
Applied and Environmental Microbiology, v.57, n.9, p.2635-2639, 1991. |
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Idioma: |
Inglês |
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Conteúdo: |
The chemotactic response of Bradyrhizobium japonicum toward soybean seed and root exudates was examined. Assays using various isoflavones and fractionated exudate indicated that isoflavones are not the principal attractants in exudates. Likewise, induction of nod genes with isoflavones or seed exudate before assay did not enhance chemotaxis. Screening of numerous compounds revealed that only dicarboxylic acids and the amino acids glutamate and aspartate were strong attractants. The presence of glutamate, aspartate, and dicarboxylic acids in appreciable concentrations in soybean seed and root exudates indicates that these compounds likely represent natural chemoattractants for B. japonicum. |
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Categoria do assunto: |
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Marc: |
LEADER 01112naa a2200145 a 4500
001 1457376
005 1992-10-27
008 1991 bl --- 0-- u #d
100 1 $aBARBOUR, W. M.
245 $aChemotaxis of Bradyrhizobium japonicum to soybean exudates.
260 $c1991
520 $aThe chemotactic response of Bradyrhizobium japonicum toward soybean seed and root exudates was examined. Assays using various isoflavones and fractionated exudate indicated that isoflavones are not the principal attractants in exudates. Likewise, induction of nod genes with isoflavones or seed exudate before assay did not enhance chemotaxis. Screening of numerous compounds revealed that only dicarboxylic acids and the amino acids glutamate and aspartate were strong attractants. The presence of glutamate, aspartate, and dicarboxylic acids in appreciable concentrations in soybean seed and root exudates indicates that these compounds likely represent natural chemoattractants for B. japonicum.
700 1 $aHATTERMANN, D. R.
700 1 $aSTACEY, G.
773 $tApplied and Environmental Microbiology$gv.57, n.9, p.2635-2639, 1991.
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Registro original: |
Embrapa Soja (CNPSO) |
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