Department of Botany, University of British Columbia, Vancouver, Canada.
Plant Physiol. 1969 Sep;44(9):1321-7. doi: 10.1104/pp.44.9.1321.
As measured 7, 14, and 21 days after the application of 10(-2) M vanadyl sulfate solution to the foliage of 4.5-month-old sugar beet plants, significantly less growth of the leaves and an increase in the sucrose content of the storage root resulted. Accompanying these alterations were a higher rate of carbon dioxide fixation, a lower rate of respiration, and a decreased rate of nitrate reductase, glutamic-pyruvic transaminase, phosphatase, and invertase activity. The enzymes of sucrose synthesis, sucrose synthetase, sucrose phosphate synthetase and uridine diphosphate glucose-pyrophosphorylase were stimulated. The content of reducing sugar, nitrite N, amino acids and protein was less, and that of nitrate N was greater in the vanadium-treated plants. In the majority of cases the greatest magnitude of change occurred during the first 7 days following treatment. The changes in growth and chemical composition are believed to be closely related to the stimulation or inhibition of the various enzymes by vanadyl sulfate.
将 10(-2)M 硫酸氧钒溶液应用于 4.5 个月大的甜菜叶片后，第 7、14 和 21 天进行测量，结果表明叶片生长明显减少，贮藏根中的蔗糖含量增加。伴随这些变化的是二氧化碳固定率的提高、呼吸率的降低、硝酸还原酶、谷氨酸-丙酮酸转氨酶、磷酸酶和转化酶活性的降低。蔗糖合成酶、蔗糖磷酸合成酶和尿苷二磷酸葡萄糖焦磷酸化酶等蔗糖合成酶的活性增强。处理过的植物中还原糖、亚硝酸盐 N、氨基酸和蛋白质的含量减少，而硝酸盐 N 的含量增加。在大多数情况下，处理后第 7 天发生的变化最大。生长和化学成分的变化被认为与硫酸氧钒对各种酶的刺激或抑制密切相关。
