Skip Navigation

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 Alert me to new issues of the journal
Right arrow Add to My Personal Archive
Right arrow Download to citation manager
Right arrowRequest Permissions
Google Scholar
Right arrow Articles by Suzuki, E.
Right arrow Articles by Kanai, R.
Right arrow Search for Related Content
PubMed
Right arrow Articles by Suzuki, E.
Right arrow Articles by Kanai, R.
Agricola
Right arrow Articles by Suzuki, E.
Right arrow Articles by Kanai, R.
Social Bookmarking
Add to CiteULike   Add to Connotea   Add to Del.icio.us  
What's this?

Plant and Cell Physiology, 1986, Vol. 27, No. 6 1117-1125
© 1986

Article

Comparison of Photosynthetic and Photorespiratory Enzyme Activities between Green Leaves and Colorless Parts of Variegated Leaves of a C4 Plant, Stenotaphrum secundatum (Walt.) Kuntze

Eiji Suzuki1, Jun-ichi Ohnishi, Misako Kashiwagi and Ryuzi Kanai2

Department of Biochemistry, Faculty of Science, Sailama University Urawa 338, Japan

2To whom correspondence should be addressed.

The activities of enzymes involved in C4 photosynthesis and photorespiration in colorless parts of variegated leaves of Stenotaphrum secundatum (Walt.) Kuntze were compared with those in green leaves. Chlorophyll content of the colorless part was only about 0.3–3% of that of the green leaves.

The activities of chloroplastic enzymes, pyruvate, Pi dikinase, NADP+-malic enzyme and NADP+-glyceraldehyde 3-phosphate dehydrogenase were considerably lower in colorless tissue on a fresh weight or protein basis (the ratios of the activities in the green/colorless tissues ranging from 5 to 20). A cytoplasmic enzyme, UDP-glucose pyrophosphorylase as well as aspartate and alanine aminotransferases showed comparable activities in the two types of tissue, whereas PEP carboxylase in the colorless tissue had only the one-third activity of that in green tissue. Differences in activities were also observed for the glycolate pathway enzymes (the ratios ranging from 2 to 7 for glycolate oxidase, hydroxypyruvate reductase and serine hydroxymethyltransferase, and 7 to 15 for catalase), while cytochrome c oxidase showed comparable activity in the two types of tissue.

The results suggest that the deficiency of thylakoid development in the colorless tissue influences enzyme activities not only in plastids but also in other cellular compartments.

1Present address: Institute of Applied Microbiology, University of Tokyo, Tokyo 113, Japan.

(Received March 26, 1986; Accepted June 17, 1986)
Add to CiteULike CiteULike   Add to Connotea Connotea   Add to Del.icio.us Del.icio.us    What's this?




Disclaimer: Please note that abstracts for content published before 1996 were created through digital scanning and may therefore not exactly replicate the text of the original print issues. All efforts have been made to ensure accuracy, but the Publisher will not be held responsible for any remaining inaccuracies. If you require any further clarification, please contact our Customer Services Department.