Plant Physiol.
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
QUICK SEARCH:   [advanced]


     

Plant Physiology 62:612-615 (1978)
© 1978 American Society of Plant Biologists

This Article
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Right arrow reprints & permissions
Citing Articles
Right arrow Citing Articles via CrossRef
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Gordon, W. R.
Right arrow Articles by Koukkari, W. L.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Gordon, W. R.
Right arrow Articles by Koukkari, W. L.
Agricola
Right arrow Articles by Gordon, W. R.
Right arrow Articles by Koukkari, W. L.
Articles

Circadian Rhythmicity in the Activities of Phenylalanine Ammonia-Lyase from Lemna perpusilla and Spirodela polyrhiza 1

William R. Gordon2,3 and Willard L. Koukkari

Department of Botany, University of Minnesota, Saint Paul, Minnesota 55108

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."

2 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.

3 Present address: Department of Biology, Brookhaven National Laboratory, Upton, New York 11973.

1 This investigation was supported in part by a fellowship to W. R. G. from the National Fellowships Fund, Atlanta, Georgia 30308.






HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
ASPB Publications PLANT PHYSIOLOGY THE PLANT CELL
Copyright © 1978 by the American Society of Plant Biologists