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METABOLIC ASPECTS OF THERMOGENESIS IN MALE CONES OF FIVE CYCAD SPECIES
Author(s) -
Tang William,
Sternberg Leonel,
Price David
Publication year - 1987
Publication title -
american journal of botany
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.218
H-Index - 151
eISSN - 1537-2197
pISSN - 0002-9122
DOI - 10.1002/j.1537-2197.1987.tb12146.x
Subject(s) - cycad , biology , thermogenesis , starch , respiration , botany , food science , biochemistry , adipose tissue
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 CO 2 , 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.