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Plant Physiology 49:987-990 (1972)
© 1972 American Society of Plant Biologists

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Articles

A 14C-Assay for Photorespiration in Aquatic Plants 1

R. A. Hough and R. G. Wetzel

a Department of Botany and Plant Pathology and W. K. Kellogg Biological Station, Michigan State University, Hickory Corners, Michigan 49060

The 14C-assay developed by Zelitch to evaluate photorespiration was modified for use in submersed aquatic plants in the laboratory and in situ. Results in laboratory cultures of Najas flexilis suggest that photorespiration occurs but is limited in comparison to terrestrial C3 plants and is related to the rate of diffusion of CO2 from the plant and to the carrying capacity of water for dissolved oxygen.

1 This work was supported in part by The United States Atomic Energy Commission Grants AT-(11-1)-1599, COO-1599-47 and National Science Foundation Grants GB-15665 and GB-31018X. Contribution No. 217, W. K. Kellogg Biological Station, Michigan State University.






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Copyright © 1972 by the American Society of Plant Biologists