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Plant Physiology 61:904-908 (1978)
© 1978 American Society of Plant Biologists

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Metabolism of myo-Inositol by Germinating Lilium longiflorum Pollen 1

Alice E. Manthey2 and David B. Dickinson

Department of Horticulture, University of Illinois, Urbana, Illinois 61801

Lilium Iongiflorum pollen tubes absorbed myo-[2-3H]inositol produced labeled metabolites which were separated into acid-soluble and -insoluble fractions. The soluble fraction contained labeled myo-inositol, D-glucuronic acid, myo-inositol 1-phosphate, and at least three other unidentified compounds. The acid-insoluble fraction contained considerable chloroformsoluble radioactivity and a labeled residue. Labeled myo-inositol was also absorbed by germinating pollen prior to the time of pollen tube initiation; however, there was a marked reduction in amounts of myo-inositol 1-phosphate and glucuronic acid produced by this pollen in comparison with growing pollen tubes.

2 Present address: Department of Biochemistry, University of Illinois, Urbana, Illinois 61801.

1 This work was supported by the Illinois Agricultural Experiment Station and National Science Foundation Grant PCM74-19113. This research is part of a thesis submitted by A. E. M. to satisfy the requirements for the M.S. degree in horticulture.






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Copyright © 1978 by the American Society of Plant Biologists