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Ubiquitous expression of a gene encoding for uncoupling protein isolated from the thermogenic inflorescence of the dead horse arum Helicodiceros muscivorus.

Authors
  • Ito, Kikukatsu
  • Abe, Yukie
  • Johnston, Sonya D
  • Seymour, Roger S
Type
Published Article
Journal
Journal of experimental botany
Publication Date
Mar 01, 2003
Volume
54
Issue
384
Pages
1113–1114
Identifiers
PMID: 12598581
Source
Medline
License
Unknown

Abstract

Uncoupling proteins (UCPs) are a family of mitochondrial inner membrane proteins that have been implicated in heat production in mammalian cells. The inflorescences of several members of the arum lily family (Araceae) have also been shown to produce heat during flowering, but the involvement of UCP-mediated heat production in plants is not known. In this work a gene has been isolated termed HmUCPa that encodes for a putative uncoupling protein from Helicodiceros muscivorus, a highly thermogenic arum lily. RT-PCR analysis revealed that the expression of HmUCPa was ubiquitously found, both in thermogenic male florets and appendix, and the non-thermogenic female florets, spathe and club-shaped organs of the spadix. These results suggest that HmUCPa is not primarily involved in organ-specific heat production in H. muscivorus.

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