Circadian Rhythmicity in the Activities of Phenylalanine Ammonia-Lyase from Lemna perpusilla and Spirodela polyrhiza.
PDF (645K)
Journal: 2010/June - Plant Physiology
ISSN: 0032-0889
PUBMED: 16660569
Abstract:
The oscillations in phenylalanine ammonia-lyase activity from Spirodela polyrhiza and phenylalanine ammonia-lyase and tyrosine ammonia-lyase activities from Lemna perpusilla displayed a circadian rhythm under continuous light. Rhythmicity in enzymic activity could not be detected in continuous darkness since under this condition phenylalanine ammonia-lyase activity remains at a fairly constantly low level. Results from our studies of the oscillatory pattern of the respective activities of phenylalanine and tyrosine ammonia-lyase support their "inseparability."
Open in
PUBMED | PMC | Google Scholar | Wikipedia
Relations:
Content
Citations
(3)
References
(14)
Drugs
(2)
Affiliates
(1)
Similar articles
Articles by the same authors
Discussion board
Plant Physiol 62(4): 612-615
PMID: 16660569

Circadian Rhythmicity in the Activities of Phenylalanine Ammonia-Lyase from <em>Lemna perpusilla</em> and <em>Spirodela polyrhiza</em> <sup><a href="#fn1" rid="fn1" class=" fn">1</a></sup>

Abstract

The oscillations in phenylalanine ammonia-lyase activity from Spirodela polyrhiza and phenylalanine ammonia-lyase and tyrosine ammonia-lyase activities from Lemna perpusilla displayed a circadian rhythm under continuous light. Rhythmicity in enzymic activity could not be detected in continuous darkness since under this condition phenylalanine ammonia-lyase activity remains at a fairly constantly low level. Results from our studies of the oscillatory pattern of the respective activities of phenylalanine and tyrosine ammonia-lyase support their “inseparability.”

Full text

Full text is available as a scanned copy of the original print version. Get a printable copy (PDF file) of the complete article (645K), or click on a page image below to browse page by page. Links to PubMed are also available for Selected References.
icon of scanned page 612
612
icon of scanned page 613
613
icon of scanned page 614
614
icon of scanned page 615
615

Selected References

These references are in PubMed. This may not be the complete list of references from this article.
  • Codd GA. The photoinhibition of malate dehydrogenase. FEBS Lett. 1972 Feb 1;20(2):211–214. [PubMed] [Google Scholar]
  • Hahlbrock K. Regulation of phenylalanine ammonia-lyase activity in cell-suspension cultures of Petroselinum hortense. Apparent rates of enzyme synthesis and degradation. Eur J Biochem. 1976 Mar 16;63(1):137–145. [PubMed] [Google Scholar]
  • Hess B, Boiteux A. Oscillatory phenomena in biochemistry. Annu Rev Biochem. 1971;40:237–258. [PubMed] [Google Scholar]
  • Hillman WS. Carbon dioxide output as an index of circadian timing in Lemna photoperiodism. Plant Physiol. 1970 Mar;45(3):273–279.[PMC free article] [PubMed] [Google Scholar]
  • Hillman WS. Effects of inorganic nitrogen on the response of Lemna carbon dioxide output to light quality and timing. Photochem Photobiol. 1975 Jan;21(1):30–47. [PubMed] [Google Scholar]
  • Khan AA, Sanwal GG. Diurnal variation in the activities of isocitrate and glucose-6-phosphate dehydrogenase in cactus phylloclades. Experientia. 1971 Feb 15;27(2):136–136. [PubMed] [Google Scholar]
  • Koukkari WL. Quantifying Rhythmic Movements of Albizzia julibrissin Pinnules. Plant Physiol. 1973 Jun;51(6):1084–1088.[PMC free article] [PubMed] [Google Scholar]
  • Pittendrigh CS. ON TEMPERATURE INDEPENDENCE IN THE CLOCK SYSTEM CONTROLLING EMERGENCE TIME IN DROSOPHILA. Proc Natl Acad Sci U S A. 1954 Oct;40(10):1018–1029.[PMC free article] [PubMed] [Google Scholar]
  • Podstolski AJ, Brown GN. l-Phenylalanine Ammonia-lyase Activity in Robinia pseudoacacia Seedlings: I. Cyclic Phenomenon Activity during Continuous Light. Plant Physiol. 1974 Jul;54(1):41–43.[PMC free article] [PubMed] [Google Scholar]
  • Potty VH. Determination of proteins in the presence of phenols and pectins. Anal Biochem. 1969 Jun;29(3):535–539. [PubMed] [Google Scholar]
  • Pye K, Chance B. Sustained sinusoidal oscillations of reduced pyridine nucleotide in a cell-free extract of Saccharomyces carlsbergensis. Proc Natl Acad Sci U S A. 1966 Apr;55(4):888–894.[PMC free article] [PubMed] [Google Scholar]
  • Sel'kov EE. Self-oscillations in glycolysis. 1. A simple kinetic model. Eur J Biochem. 1968 Mar;4(1):79–86. [PubMed] [Google Scholar]
  • Zucker M. Induction of phenylalanine ammonia-lyase in Xanthium leaf disks. Photosynthetic requirement and effect of daylength. Plant Physiol. 1969 Jun;44(6):912–922.[PMC free article] [PubMed] [Google Scholar]
  • Zucker M. Induction of phenylalanine ammonia-lyase in xanthium leaf discs: increased inactivation in darkness. Plant Physiol. 1971 Mar;47(3):442–444.[PMC free article] [PubMed] [Google Scholar]
Department of Botany, University of Minnesota, Saint Paul, Minnesota 55108
This paper is based on a dissertation submitted to fulfill in part the requirements for the degree of Doctor of Philosophy at the University of Minnesota.
Present address: Department of Biology, Brookhaven National Laboratory, Upton, New York 11973.
This investigation was supported in part by a fellowship to W. R. G. from the National Fellowships Fund, Atlanta, Georgia 30308.
Copyright notice
Abstract
The oscillations in phenylalanine ammonia-lyase activity from Spirodela polyrhiza and phenylalanine ammonia-lyase and tyrosine ammonia-lyase activities from Lemna perpusilla displayed a circadian rhythm under continuous light. Rhythmicity in enzymic activity could not be detected in continuous darkness since under this condition phenylalanine ammonia-lyase activity remains at a fairly constantly low level. Results from our studies of the oscillatory pattern of the respective activities of phenylalanine and tyrosine ammonia-lyase support their “inseparability.”
Collaboration tool especially designed for Life Science professionals.Drag-and-drop any entity to your messages.