METABOLIC ASPECTS OF THERMOGENESIS IN MALE CONES OF FIVE CYCAD SPECIES |
| |
| Authors: | William Tang Leonel Sternberg David Price |
| |
| Institution: | 1. Department of Biology, University of Miami, Coral Gables, Florida, 33124;2. Department of Geology, University of Miami, Coral Gables, Florida, 33124 |
| |
| Abstract: | High starch concentrations in the sporophylls of male cones of five species of cycad and their depletion during their heat-producing phase of development suggest that starch is a major fuel source for thermogenesis in these plants. Carbon-13/carbon-12 ratio analyses of respired CO2, starch, and lipids in a male cone of one of these species, Macrozamia moorei F. Muell., indicate that although starch is a major contributor to respiration, lipids are also an important respiratory substrate. |
| |
| Keywords: | |
|
|
