Developmental and Hormonal Regulation of a Triosephosphate Isomerase Gene in Petunia Corollas

Gill Ben-Nissan*, David Weiss

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

15 Scopus citations


We used a petunia corolla cDNA library to isolate a developmentally regulated cDNA clone, tpi1, encoding the glycolytic enzyme triosephosphate isomerase (TPI). The cDNA contains an open reading frame of 762 base pairs, encoding a polypeptide of 254 amino acid residues. The deduced protein shows 84 % identity with the cytosolic tpi gene product of maize. Expression of the tpi1 gene is developmentally regulated during flower development and induced by gibberellic acid (GA3) in detached corollas. We found a correlation between tpi1 expression and respiration during corolla development and following GA3 treatment. We suggest that the activation of general biochemical pathways such as glycolysis and respiration by GA is required for corolla development.

Original languageAmerican English
Pages (from-to)58-62
Number of pages5
JournalJournal of Plant Physiology
Issue number1
StatePublished - 1995

Bibliographical note

Funding Information:
We are grateful to Prof. A. H. Halevy and Prof. J.N.M. Mol for their valuable comments and suggestions. This work was supported by a grant from the EEC (3837).


  • GA
  • Petunia hybrida
  • TPI
  • chalcone synthase gene
  • chs
  • corolla growth
  • gibberellin
  • gibberellin
  • respiration
  • triosephosphate isomerase
  • triosephosphate isomerase


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