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


     

Plant Physiology 63:444-449 (1979)
© 1979 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 Web of Science
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 Web of Science (9)
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Pike, C. S.
Right arrow Articles by Showalter, A. M.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Pike, C. S.
Right arrow Articles by Showalter, A. M.
Agricola
Right arrow Articles by Pike, C. S.
Right arrow Articles by Showalter, A. M.
Articles

Phytochrome Control of Cell Wall-bound Hydroxyproline Content in Etiolated Pea Epicotyls 1

Carl S. Pike, Hyong Un2, John C. Lystash3 and Allan M. Showalter4

a Department of Biology, Franklin and Marshall College, Lancaster, Pennsylvania 17604

The red light inhibition of growth of the intact pea (Pisum sativum L. cv. Alaska) third internode was correlated with an increase in the content of cell wall-bound hydroxyproline. These changes were detected 3 hours after irradiation, and possibly at 1 hour. Far red light reversed the effects of red light. The iron chelator {alpha},{alpha}'-dipyridyl reversed the red light effects on both growth and hydroxyproline content. Using segments incubated in vitro, no phytochrome-mediated change in hydroxyproline content could be observed, perhaps because of an overwhelming wounding response. If plants were irradiated in situ and grown for 8 hours before excision and incubation of segments, some enhancement of hydroxylation by red light was detectable both colorimetrically and radioisotopically. The red light inhibition of segment growth was reversed by {alpha},{alpha}'-dipyridyl. These results are examined in reference to the role of extensin in normal and induced growth cessation.

2 Present address: School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104.

3 Present address: School of Medicine, Thomas Jefferson University, Philadelphia, Pennsylvania 19107.

4 Present address: Department of Biochemistry, Rutgers University, New Brunswick, New Jersey 08903.

1 Supported in part by National Science Foundation Grant PCM 75-06450.






HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
ASPB Publications PLANT PHYSIOLOGY® THE PLANT CELL
Copyright © 1979 by the American Society of Plant Biologists