Remetabolism of transpired ethanol by Populus deltoides
Conference
·
· Plant Physiology, Supplement; (USA)
OSTI ID:5841281
- Univ. of Kentucky, Lexington (USA)
Ethanol is present in the transpiration stream of flooded and unflooded trees in concentrations up to 0.5mM. Transpired ethanol does not evaporate but is remetabolized by foliage and upper stems in Populus deltoides. {sup 14}C-ethanol was supplied in the transpiration stream to excised leaves and shoots; more than 98% was incorporated. Less than 1% was respired as CO{sub 2}. Organic and amino acids were labelled initially, with eventual accumulations in water- and chloroform-soluble fractions and into protein. Much of the label was incorporated into stem tissue, with little reaching the lamina. These experiments suggest that ethanol is not lost transpirationally through the leaves, but is efficiently recycled in a manner resembling lactate recycling in mammals.
- OSTI ID:
- 5841281
- Report Number(s):
- CONF-9007196--
- Conference Information:
- Journal Name: Plant Physiology, Supplement; (USA) Journal Volume: 93:1
- Country of Publication:
- United States
- Language:
- English
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