A.R.C. Research Group on Photosynthesis, John Innes Institute, Colney Lane, NR4 7UH, Norwich, UK.
Planta. 1984 Mar;160(3):272-5. doi: 10.1007/BF00402865.
The aim of this work was to discover the products of carbohydrate fermentation in alder roots. Experiments were done with roots of trees growing in naturally wet soils. Detached, anaerobic roots accumulated ethanol, and ethanol was the major labelled product of metabolism of [U-(14)C]sucrose. Glycerol was not labelled from [U-(14)C]sucrose, and did not accumulate in detached or attached roots. In both winter and summer, roots in the field contained little or no glycerol, and the amount was less than that in the aerobic parts of the tree. Roots in the field contained substantial amounts of ethanol. We conclude that ethanol is the major product of fermentation in alder roots, and that glycerol is not a significant product. These results are not consistent with Crawford's metabolic theory of flooding tolerance.
这项工作的目的是发现桤木根中碳水化合物发酵的产物。实验是在自然湿地生长的树木的根上进行的。分离的厌氧根积累乙醇，并且乙醇是[U-(14)C]蔗糖代谢的主要标记产物。甘油没有从[U-(14)C]蔗糖中标记，也没有在分离或附着的根中积累。在冬季和夏季，田间的根几乎不含或不含甘油，其含量少于树木的有氧部分。田间的根含有大量的乙醇。我们得出结论，乙醇是桤木根发酵的主要产物，而甘油不是重要产物。这些结果与克劳福德的耐淹水代谢理论不一致。
