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 | Acesso ao texto completo restrito à biblioteca da Embrapa Amazônia Ocidental. Para informações adicionais entre em contato com cpaa.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Amazônia Ocidental. |
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Data corrente: |
16/08/2016 |
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Data da última atualização: |
10/04/2026 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
SELMAR, D.; LIEBEREI, R.; JUNQUEIRA, N. T. V.; BIEHL, B. |
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Afiliação: |
DIRK SELMAR, BOTANISCHES INSTITUT DER TECHNISCHEN UNIVERSITÄT; REINHARD LIEBEREI, INSTITUT FÜR ANGEWANDTE BOTANIK DER UNIVERSITÄT HAMBURG; NILTON TADEU VILELA JUNQUEIRA, CNPSD; BÖLE BIEHL, BOTANISCHES INSTITUT DER TECHNISCHEN UNIVERSITÄT. |
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Título: |
Changes in cyanogenic glucoside content in seeds an seedlings of Hevea species. |
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Ano de publicação: |
1991 |
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Fonte/Imprenta: |
Phytochemistry, v. 30, n. 7, p. 2135-2140, 1991. |
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DOI: |
https://doi.org/10.1016/0031-9422(91)83601-G |
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Idioma: |
Inglês |
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Conteúdo: |
The content of cyanogenic glucosides in seeds of several Hevea species was investigated. Whereas in all seeds tested large quantities of the cyanogenic monoglucoside, linamarin, were detectable, lotaustralin, which occurs in much lower concentrations, did not occur in every individual seed. After storage, the cyanogenic diglucosides, linustatin and neolinustatin, were also detectable in Hevea seeds, implying that the monoglucosides, linamarin and lotaustralin, are glucosylated to yield the respective diglucosides, linustatin and neolinustatin. The content of cyanogenic glucosides was also monitored during germination and seedling development of several Hevea species. Depending on the species investigated, and even on the varieties of one species, the patterns of developmental changes in HCN-potential were quite different. Whereas in ‘wild type’ H. brasiliensis seedlings the HCN-potential decreased to less than 15% of the initial content, it remains nearly constant in those of variety FX 25. However, during seedling development of H. benthamiana, H. camargoana and H. pauciflora, the HCN-potential first increased and later decreased. These changes depend on two contrary processes, conversion of cyanogenic glucosides to non-cyanogenic compounds and de novo synthesis of cyanogens. Variations result from quantitative differences in consumption and de novo synthesis of cyanogenic glucosides as well as from differences in the times when these two processes are initiated. |
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Palavras-Chave: |
Cyanogenic; Cyanogenic glucosides; Glicosídeo; Linamarin; Linustatin; Lotaustralin; Mudança; Neolinustatin. |
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Thesagro: |
Euphorbiaceae; Hevea; Muda; Semente. |
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Thesaurus Nal: |
Cyanogenesis; Seedlings; Seeds. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02401naa a2200349 a 4500
001 2050970
005 2026-04-10
008 1991 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1016/0031-9422(91)83601-G$2DOI
100 1 $aSELMAR, D.
245 $aChanges in cyanogenic glucoside content in seeds an seedlings of Hevea species.
260 $c1991
520 $aThe content of cyanogenic glucosides in seeds of several Hevea species was investigated. Whereas in all seeds tested large quantities of the cyanogenic monoglucoside, linamarin, were detectable, lotaustralin, which occurs in much lower concentrations, did not occur in every individual seed. After storage, the cyanogenic diglucosides, linustatin and neolinustatin, were also detectable in Hevea seeds, implying that the monoglucosides, linamarin and lotaustralin, are glucosylated to yield the respective diglucosides, linustatin and neolinustatin. The content of cyanogenic glucosides was also monitored during germination and seedling development of several Hevea species. Depending on the species investigated, and even on the varieties of one species, the patterns of developmental changes in HCN-potential were quite different. Whereas in ‘wild type’ H. brasiliensis seedlings the HCN-potential decreased to less than 15% of the initial content, it remains nearly constant in those of variety FX 25. However, during seedling development of H. benthamiana, H. camargoana and H. pauciflora, the HCN-potential first increased and later decreased. These changes depend on two contrary processes, conversion of cyanogenic glucosides to non-cyanogenic compounds and de novo synthesis of cyanogens. Variations result from quantitative differences in consumption and de novo synthesis of cyanogenic glucosides as well as from differences in the times when these two processes are initiated.
650 $aCyanogenesis
650 $aSeedlings
650 $aSeeds
650 $aEuphorbiaceae
650 $aHevea
650 $aMuda
650 $aSemente
653 $aCyanogenic
653 $aCyanogenic glucosides
653 $aGlicosídeo
653 $aLinamarin
653 $aLinustatin
653 $aLotaustralin
653 $aMudança
653 $aNeolinustatin
700 1 $aLIEBEREI, R.
700 1 $aJUNQUEIRA, N. T. V.
700 1 $aBIEHL, B.
773 $tPhytochemistry$gv. 30, n. 7, p. 2135-2140, 1991.
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