Biochemical analysis of callus from physic nut/ Analise bioquimica de calos de pinhao-manso

The physic nut (Jatropha curcas L.) is gaining importance because of its potential as raw material for biodiesel. Studies aiming the adequacy of agronomic techniques and tissue culture contribute, indirectly, to this aspect, helping applied research as biotechnology, in situations that aim plant reg...

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Veröffentlicht in:Ciência rural 2010-11, Vol.40 (11), p.2268
Hauptverfasser: dos Santos, Dalilhia Nazare, Nunes, Claudineia Ferreira, Pasqual, Moacir, Valente, Thais Caina Teixeira, de Oliveira, Ana Catarina Lima, Silveira, Neidiquele Maria
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Sprache:spa
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Zusammenfassung:The physic nut (Jatropha curcas L.) is gaining importance because of its potential as raw material for biodiesel. Studies aiming the adequacy of agronomic techniques and tissue culture contribute, indirectly, to this aspect, helping applied research as biotechnology, in situations that aim plant regeneration. Therefore, it is essential to evaluate, the behavior of primary metabolites during the callus growing season. The callus mass at the inoculation time showed no carbohydrates reserve. At the 42nd day the sucrose absorption started in the medium, while the accumulation in the explant occurred from the [98.sup.th] day of cultivation. Amino acid content was high at the inoculation's day and around the 98th day, both amino acids and protein levels decreased. Key words: Jatropha curcas L., carbohydrates, proteins, amino acids. O pinhao-manso (Jatropha curcas L.) vem ganhando importancia por seu potencial como insumo ao biodiesel. Estudos visam a adequacao agronomica e a cultura de tecidos contribui indiretamente com este aspecto, auxiliando em pesquisas aplicadas como em biotecnologia, em situacoes que visam a regeneracao de plantas. Nesse intuito, e fundamental avaliar, durante os periodos de cultivo dos calos, o comportamento dos metabolitos primarios. A massa calogenica, por ocasiao da inoculacao, nao apresentou reserva na forma de carboidratos. Aos 42 dias iniciou a absorcao da sacarose do meio, enquanto o acumulo no explante ocorreu a partir dos 98 dias de cultivo. O teor de aminoacidos foi alto no dia da inoculacao e, por volta dos 98 dias, tanto os niveis de aminoacidos quanto os de proteinas decresceram. Palavras-chave: Jatropha curcas L., carboidratos, proteinas, aminoacidos.
ISSN:0103-8478