Illinois Natural History Survey and Department of Botany, University of Illinois, Champaign, Illinois 61820.
Plant Physiol. 1981 Oct;68(4):868-71. doi: 10.1104/pp.68.4.868.
Sixty-day-old soybean plants were exposed in the field to 78.7 parts per one-hundred million of SO(2) in an open-air fumigation system for 20 days. Leaves from the top one-fourth and bottom one-fourth of the plants were analyzed for chlorophyll, free fatty acids, fatty acid esters, polar lipid fatty acids, and sterols. Fumigated plants had a lower chlorophyll, free fatty acid, and polar lipid content, but a higher fatty acid ester content. Of the individual fatty acids, linoleic and linolenic acid increased with SO(2) fumigation while palmitic acid decreased. SO(2) fumigations had only a minor effect on leaf sterols. In general, the lower, more mature leaves showed a greater response to SO(2) exposure.
60 日龄的大豆植株在野外的一个开放熏气系统中暴露于 78.7ppm 的 SO2 中 20 天。对植株顶部四分之一和底部四分之一的叶子进行叶绿素、游离脂肪酸、脂肪酸酯、极性脂脂肪酸和甾醇分析。熏气植物的叶绿素、游离脂肪酸和极性脂含量较低，但脂肪酸酯含量较高。在个别脂肪酸中，亚油酸和亚麻酸随着 SO2 熏气而增加，而棕榈酸减少。SO2 熏气对叶片甾醇只有轻微影响。一般来说，较低、较成熟的叶子对 SO2 暴露的反应更大。
