Direct respiration of lipids during heat production in the inflorescence of Philodendron selloum

Dan B. Walker, Jürg Gysi, Leonel Sternberg, Michael J. Deniro

Research output: Contribution to journalArticle

27 Citations (Scopus)

Abstract

Respiration in the heat-generating, sterile florets of Philodendron selloum was examined by electron microscopy and carbon isotopic analysis of respired carbon dioxide. After the spathe unfolded, the florets switched from carbohydrate oxidation to lipid oxidation, which persisted during heating and for at least 2 days thereafter. The scarcity of glyoxysome-like organelles and the low catalase activity in this tissue indicate that the lipid was respired directly and not after conversion to carbohydrate by the glyoxylate shunt. Thus, lipid metabolism in this heat-generating plant tissue appears to mimic aspects of the biochemistry and physiology of heat production in some animal tissues.

Original languageEnglish
Pages (from-to)419-421
Number of pages3
JournalScience
Volume220
Issue number4595
StatePublished - Dec 1 1983
Externally publishedYes

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Philodendron bipinnatifidum
heat production
breathing
inflorescences
florets
heat
lipids
glyoxysomes
glyoxylate cycle
carbohydrates
animal tissues
lipid metabolism
biochemistry
organelles
plant tissues
electron microscopy
catalase
lipid peroxidation
physiology
carbon dioxide

ASJC Scopus subject areas

  • General

Cite this

Walker, D. B., Gysi, J., Sternberg, L., & Deniro, M. J. (1983). Direct respiration of lipids during heat production in the inflorescence of Philodendron selloum. Science, 220(4595), 419-421.

Direct respiration of lipids during heat production in the inflorescence of Philodendron selloum. / Walker, Dan B.; Gysi, Jürg; Sternberg, Leonel; Deniro, Michael J.

In: Science, Vol. 220, No. 4595, 01.12.1983, p. 419-421.

Research output: Contribution to journalArticle

Walker, DB, Gysi, J, Sternberg, L & Deniro, MJ 1983, 'Direct respiration of lipids during heat production in the inflorescence of Philodendron selloum', Science, vol. 220, no. 4595, pp. 419-421.
Walker DB, Gysi J, Sternberg L, Deniro MJ. Direct respiration of lipids during heat production in the inflorescence of Philodendron selloum. Science. 1983 Dec 1;220(4595):419-421.
Walker, Dan B. ; Gysi, Jürg ; Sternberg, Leonel ; Deniro, Michael J. / Direct respiration of lipids during heat production in the inflorescence of Philodendron selloum. In: Science. 1983 ; Vol. 220, No. 4595. pp. 419-421.
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