Skip to main content
PMC home page
Plant Physiology logoLink to Plant Physiology
. 1974 Nov;54(5):702–705. doi: 10.1104/pp.54.5.702

On the Mechanism of the Changes in Phenylalanine Ammonia-lyase Activity Induced by Ultraviolet and Blue Light in Gherkin Hypocotyls 1

Gerrit Engelsma a
PMCID: PMC366585  PMID: 16658955

Abstract

Irradiation with ultraviolet light causes in the hypocotyl of dark-grown gherkin seedlings the partial conversion of trans-hydroxycinnamic acids to the cis-isomers. The trans-hydroxycinnamic acids inhibit the development of phenylalanine ammonia-lyase activity, and the transformation of these compounds to the much less inhibitory cis-isomers forms a ready explanation for the increase in phenylalanine ammonia-lyase activity in the hypocotyl of gherkin seedlings irradiated with ultraviolet light. Arguments are advanced that the increase in phenylalanine ammonia-lyase activity caused by irradiation with blue light is also (at least in part) initiated by trans-cis isomerisation of the hydroxycinnamic acids.

Full text

PDF
702

Selected References

These references are in PubMed. This may not be the complete list of references from this article.

  1. Challice J. S., Williams A. H. Paper chromatographic separation and behavior of the cis- and trans-isomers of cinnamic acid derivatives. J Chromatogr. 1966 Feb;21(2):357–362. doi: 10.1016/s0021-9673(01)91327-5. [DOI] [PubMed] [Google Scholar]
  2. Engelsma G. A possible role of divalent manganese ions in the photoinduction of phenylalanine ammonia-lyase. Plant Physiol. 1972 Nov;50(5):599–602. doi: 10.1104/pp.50.5.599. [DOI] [PMC free article] [PubMed] [Google Scholar]
  3. Goren R., Galston A. W. Control by phytochrome of C-sucrose incorporation into buds of etiolated pea seedlings. Plant Physiol. 1966 Jun;41(6):1055–1064. doi: 10.1104/pp.41.6.1055. [DOI] [PMC free article] [PubMed] [Google Scholar]
  4. Hadwiger L. A., Schwochau M. E. Ultraviolet Light-induced Formation of Pisatin and Phenylalanine Ammonia Lyase. Plant Physiol. 1971 Apr;47(4):588–590. doi: 10.1104/pp.47.4.588. [DOI] [PMC free article] [PubMed] [Google Scholar]
  5. Posthuma J., Berends W. Energy transfer in aqueous solution. Bibl Laeger. 1966 Mar 14;112(3):422–435. doi: 10.1016/0926-6585(66)90245-7. [DOI] [PubMed] [Google Scholar]
  6. Smith H. Phytochrome and photomorphogenesis in plants. Nature. 1970 Aug 15;227(5259):665–668. doi: 10.1038/227665a0. [DOI] [PubMed] [Google Scholar]
  7. Walton D. C. l-Phenylalanine Ammonia-Lyase Activity During Germination of Phaseolus vulgaris. Plant Physiol. 1968 Jul;43(7):1120–1124. doi: 10.1104/pp.43.7.1120. [DOI] [PMC free article] [PubMed] [Google Scholar]
  8. Zucker M. Induction of Phenylalanine Deaminase by Light and its Relation to Chlorogenic Acid Synthesis in Potato Tuber Tissue. Plant Physiol. 1965 Sep;40(5):779–784. doi: 10.1104/pp.40.5.779. [DOI] [PMC free article] [PubMed] [Google Scholar]

Articles from Plant Physiology are provided here courtesy of Oxford University Press

RESOURCES