Upregulation of a tonoplast-localized cytochrome P450 during petal senescence in Petunia inflata.

ABSTRACT:

Background

Gene expression in Petunia inflata petals undergoes major changes following compatible pollination. Severe flower wilting occurs reproducibly within 36 hours, providing an excellent model for investigation of petal senescence and programmed cell death. Expression of a number of genes and various enzyme activities involved in the degradation and remobilization of macromolecules have been found to be upregulated during the early stages of petal senescence.

Results

By performing differential display of cDNAs during Petunia inflata petal senescence, a highly upregulated gene encoding a cytochrome P450 was identified. Analysis of the complete cDNA sequence revealed that the predicted protein is a member of the CYP74C family (CYP74C9) and is highly similar to a tomato C

SUBMITTER: Xu Y 

PROVIDER: S-EPMC1540422 | biostudies-literature | 2006 Apr

REPOSITORIES: biostudies-literature