Peach (Prunus persica L.) fruit growth and ripening: transcript levels and activity of polyamine biosynthetic enzymes in the mesocarp.
J Plant Physiol
; 160(9): 1109-15, 2003 Sep.
Article
em En
| MEDLINE
| ID: mdl-14593813
ABSTRACT
Transcript levels and activities of the polyamine biosynthetic enzymes arginine decarboxylase (ADC, EC 4.1.1.19), ornithine decarboxylase (ODC, EC 4.1.1.17) and S-adenosylmethionine decarboxylase (SAMDC, EC 4.1.1.21), as well as free polyamine titres, were analysed throughout the four growth stages S1-S4 leading up to ripening in the mesocarp from peach fruit (Prunus persica L. Batsch cv. Redhaven) grown under field conditions. SAMDC mRNA, which was northern analysed by using a PCR-generated homologous SAMDC probe, and ADC mRNA levels appeared quite stable during fruit development, while ODC transcript accumulation showed a discontinuous trend. The pattern of transcript levels during growth did not correlate with that of the relative enzyme activity, which instead correlated well with free polyamine levels. Both exhibited maximum levels in S1 and a smaller peak in S3. The behaviour of the polyamine biosynthetic machinery is discussed in relation to the different cell growth rates occurring during fruit development.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Poliaminas Biogênicas
/
Prunus
Idioma:
En
Revista:
J Plant Physiol
Assunto da revista:
BOTANICA
Ano de publicação:
2003
Tipo de documento:
Article
País de afiliação:
Itália