Department of Botany, University of Toronto, Ontario, M5S 1A1 Canada.
Plant Physiol. 1979 Aug;64(2):300-5. doi: 10.1104/pp.64.2.300.
The fatty acids of the major glycerolipids from the leaves of Vicia faba and Hordeum vulgare plants treated with three different concentrations of pyridazinone derivatives were analyzed. These compounds showed multiple effects on the levels of lipids and pigments. At low concentrations, the primary effect of San 9785 was on the level of linolenic acid (18:3) in the galactolipids of V. faba, whereas the effect of San 6706 was primarily on the trans-Delta(3)-hexadecenoic acid (16:1) content in phosphatidylglycerol. At higher concentrations, the two compounds reduced the content of both fatty acids in the leaves. The results appear to indicate a differential effect of these herbicides on fatty acid accumulation and a difference in susceptibility of two fatty acids in the species examined. Electron microscopic studies revealed that two herbicides caused different abnormalities in V. faba chloroplast ultrastructure.
分析了用三种不同浓度的哒嗪酮衍生物处理的蚕豆和大麦叶片中主要甘油酯的脂肪酸。这些化合物对脂质和色素水平表现出多种影响。在低浓度下，San 9785 的主要作用是在蚕豆半乳糖脂中的亚麻酸（18:3）水平，而 San 6706 的作用主要是在磷脂酰甘油中的反式-Delta(3)-十六烯酸（16:1）含量。在较高浓度下，这两种化合物降低了叶片中这两种脂肪酸的含量。结果表明，这些除草剂对脂肪酸积累有不同的影响，而且在所研究的两种脂肪酸中，物种的敏感性也不同。电子显微镜研究表明，两种除草剂导致蚕豆叶绿体超微结构出现不同的异常。
