Temperature Regulation by the Inflorescence of Philodendron

@article{Nagy1972TemperatureRB,
  title={Temperature Regulation by the Inflorescence of Philodendron},
  author={Kenneth A. Nagy and Daniel K. Odell and Roger S. Seymour},
  journal={Science},
  year={1972},
  volume={178},
  pages={1195 - 1197}
}
The inflorescence of Philodendron selloum temporarily maintains a core temperature of 38� to 46�C, despite air temperatures ranging from 4� to 39�C, by means of a variable metabolic rate. The heat is produced primarily by small, sterile male flowers that are capable of consuming oxygen at rates approaching those of flying hummingbirds and sphinx moths. 
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Respiration of thermogenic inflorescences of Philodendron melinonii: natural pattern and responses to experimental temperatures.
TLDR
It is concluded that the male floret tissues possess the same thermoregulatory mechanism of more precise thermoreGulatory species, but a combination of small spadix size, moderate thermogenic capacity, and slow reaction time result in poor thermoregian performance during the second day.
Pattern of respiration by intact inflorescences of the thermogenic arum lily Philodendron selloum
TLDR
The data imply that the short peak phase is related to characterized by two episodes of heating—the first pro- the enhancement of odour production that attracts a duced a large temperature elevation that was associated single species of large scarabaeid beetle in its native with receptivity of female florets at the base Brazil, and regulation of maximum T s may prevent over- of the spadix.
Direct Respiration of Lipids During Heat Production in the Inflorescence of Philodendron selloum
TLDR
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.
Thermogenic Patterns in Philodendron ornatum and P. grandifolium: A Comparative Analysis
TLDR
Temperature differences between the spadix (male zone) and ambient air for P. grandifolium and P. ornatum showed the same pattern in both species, and otherwise there was little or no difference between air and spadIX temperatures.
Respiration and heat production by the inflorescence of Philodendron selloum Koch
TLDR
During a 2-d sequence of anthesis, the spadices of the thermogenic arum lily, Philodendron selloum, regulated maximum temperature within a small range by reversible thermal inhibition of respiratory heat production, indicating that there was no net phosphorylation during thermogenesis, heat production being the primary function of high rates of respiration.
Heat Production and Temperature Regulation in Eastern Skunk Cabbage
The spadix of Symplocarpus foetidus L. maintains an internal temperature 15� to 35�C above ambient air temperatures of -15� to +15�C. For at least 14 days it consumes oxygen at a rate comparable to…
Thermogenesis in three Philodendron species (Araceae) of French Guiana
TLDR
It is proposed that the heat production and the spadix temperature patterns observed may reflect different physiological processes and have a taxonomic significance in the genus Philodendron.
Étude comparative de la production de chaleur chez quelques Araceae
Comparative study of heat production in some Araceae. The thermogenetic cycle of the inflorescences is compared in the genera Anubias, Cercestis, Dieffenbachia, Homalomena and Philodendron. The…
Thermogenesis in three Philodendron species (Araceae) of French Guiana
TLDR
Spadix temperature was measured in three species of Philodendron: P. acutatum Schott, P. pedatum (Hooker) Kunth, and P. solimoesense, which showed two different patterns of spad...
Biophysics and Physiology of Temperature Regulation in Thermogenic Flowers
  • R. Seymour
  • Biology, Medicine
    Bioscience reports
  • 2001
The flowers or inflorescences of certain primitive seed plants are able to regulate their temperature during blooming by modulating the rate of heat production to remain much warmer than the…
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