In vivo redox state of the ubiquinone pool in the spadices of the thermogenic skunk cabbage, <Emphasis Type="Italic">Symplocarpus renifolius</Emphasis> |
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Authors: | Takashi Kamata Kazushige Matsukawa Yusuke Kakizaki Kikukatsu Ito |
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Institution: | (1) Faculty of Agriculture, Cryobiofrontier Research Center, Iwate University, Ueda, Morioka Iwate, 020-8550, Japan; |
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Abstract: | In vivo ubiquinone (UQ) reduction levels were determined in thermogenic stigma and post-thermogenic male stages of spadices
of the skunk cabbage, Symplocarpus renifolius. In contrast to Arum maculatum, in which the UQ pool is almost fully reduced during thermogenesis, the reduction levels of UQ9 and UQ10 were not affected
by the thermogenic status or developmental stage of individual S. renifolius spadices. Moreover, these levels were controlled within the ranges 40–75% and 35–60%, respectively. These results suggest
that the reduction state of the UQ pool per se is not primarily involved in thermoregulation in S. renifolius. |
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