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


     

Plant Physiology 43:1347-1354 (1968)
© 1968 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 (17)
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Miles, C. D.
Right arrow Articles by Hagen, C. W.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Miles, C. D.
Right arrow Articles by Hagen, C. W., Jr.
Agricola
Right arrow Articles by Miles, C. D.
Right arrow Articles by Hagen, C. W.
Articles

The Differentiation of Pigmentation in Flower Parts, IV. Flavonoid Elaborating Enzymes From Petals of Impatiens balsamina s 1,2

C. D. Miles3 and C. W. Hagen, Jr.

Botany Department, Indiana University, Bloomington, Indiana 47401

Extracts of the flower petals of Impatiens balsamina L. contain enzymes which catalyze the glycosylation of phenolic compounds. Enzymes have been extracted which glycosylate hydroquinone to arbutin and at least 3 different flavonols to the 3-monoglucoside. The hydroquinone glucosylating enzyme is similar to enzymes previously described except that it requires an unidentified low molecular weight cofactor. The glucosylation of flavonols follows normal enzyme kinetics; it requires a nucleotide diphosphate glucose donor for activity, and is made more evident by the presence of glucono-1:5-lactone, an inhibitor of endogenous glucosidases. It is suggested that the flavonol glucosylating enzyme acts naturally to glucosylate a precursor of both flavonols and anthocyanins to the 3-monoglucoside. The only elaboration of an anthocyanin observed with petal extracts was an acylation of pelargonidin-3-monoglucoside.

3 Present address: Section of Genetics, Development and Physiology, Division of Biological Sciences, Cornell University, Ithaca, New York 14850.

1 This paper has been dedicated to Professor Ralph E. Cleland on the occasion of his seventy-fifth birthday in recognition of the stimulation and academic guidance which he has provided for both authors.

2 The work was supported in part by National Science Foundation Grants G21943, GB1978 and GB5065 (CWH) and by a Public Health Service Predoctoral Fellowship GM032, 599-01 (CDM).






HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
ASPB Publications PLANT PHYSIOLOGY® THE PLANT CELL
Copyright © 1968 by the American Society of Plant Biologists