Sabiia Seb
PortuguêsEspañolEnglish
Embrapa
        Busca avançada

Botão Atualizar


Botão Atualizar

Registro completo
Provedor de dados:  Inra
País:  France
Título:  Expression of a poplar cDNA encoding a ferulate-5-hydroxylase/coniferaldehyde 5-hydroxylase increases S lignin deposition in Arabidopsis thaliana
Autores:  Sibout, R.
Baucher, M.
Gatineau, M.
Van Doorsselaere, J.
Mila, I.
Pollet, B.
Maba, B.
Pilate, G.
Lapierre, C.
Boerjan, W.
Jouanin, L.
Data:  2002
Ano:  2002
Palavras-chave:  BIOSYNTHESE DE LA LIGNINE
EXPRESSION DES GENES
ADNC FERULATE 5-HYDROXYLASE
POPULUS TRICHOCARPA
ARABIDOPSIS THALIANA
Resumo:  Ferulate-5-hydroxylase or coniferaldehyde 5-hydroxylase (F5H or Cald5H; CYP84A1) is the enzyme responsible for the lasthydroxylation of the syringyl-type lignin precursors. A cDNA clone highly homologous to the Arabidopsis thaliana F5H/Cald5H cDNAwas identified during the random sequencing of a poplar (Populus trichocarpa) differentiating xylem cDNA library. Present as a multigenicfamily in poplar, this gene (PopF5H) was found to be highly expressed in lignified tissues supporting its role in lignin biosynthesis. Whenplaced under the control of the CaMV 35S promoter, the poplar F5H was able to complement the A. thaliana fah1-2 mutation.Overexpression in wild-type A. thaliana substantially increased the level of syringyl units in lignins. These transgenic lines were alsotypified by substantial levels of S-units in root lignins, whereas these units are present in low amounts in wild-type A. thaliana. These resultssupport that PopF5H is a functional homolog of the A. thaliana F5H gene.
Tipo:  Journal Article
Idioma:  Inglês
Identificador:  http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD2007a66658c5&uri=/notices/prodinra1/2008/12/
Fonte:  Plant Physiology and Biochemistry. 2002, 40 (12) : 1087-1096
Fechar
 

Empresa Brasileira de Pesquisa Agropecuária - Embrapa
Todos os direitos reservados, conforme Lei n° 9.610
Política de Privacidade
Área restrita

Embrapa
Parque Estação Biológica - PqEB s/n°
Brasília, DF - Brasil - CEP 70770-901
Fone: (61) 3448-4433 - Fax: (61) 3448-4890 / 3448-4891 SAC: https://www.embrapa.br/fale-conosco

Valid HTML 4.01 Transitional