Institute of Plant Anatomy and Cytology, University of Copenhagen, Sølvgade 83, DK-1307, København K, Denmark.
Planta. 1977 Jan;137(3):215-24. doi: 10.1007/BF00388153.
Three glucosinolate-containing species, Armoracia rusticana Gaertner, Meyer et Scherbius (Brassicaceae), Capparis cynophallophora L. (Capparaceae) and Drypetes roxburghii (Wall.) Hurusawa (Euphorbiaceae), are shown by both light and electron microscopy to contain protein-accumulating cells (PAC). The PAC of Armoracia and Copparis (former "myrosin cells") occur as idioblasts. The PAC of Drypetes are usual members among axial phloem parenchyma cells rather than idioblasts. In Drypetes the vacuoles of the PAC are shown ultrastructurally to contain finely fibrillar material and to originate from local dilatations of the endoplasmic reticulum. The vacuoles in PAC of Armoracia and Capparis seem to originate in the same way; but ultrastructurally, their content is finely granular. In addition, Armoracia and Capparis are shown by both light and electron microscopy to contain dilated cisternae (DC) of the endoplasmic reticulum in normal parenchyma cells, in accord with previous findings for several species within Brassicaceae. The relationship of PAC and DC to glucosinolates and the enzyme myrosinase is discussed.
三种含硫葡糖苷的物种，芜菁（十字花科）、山萮菜（山葵科）和算盘子（大戟科），通过光镜和电镜显示都含有蛋白积累细胞（PAC）。芜菁和山萮菜的 PAC（以前的“芥子细胞”）是作为异形细胞出现的。算盘子的 PAC 是轴向韧皮部薄壁细胞中的常见成员，而不是异形细胞。在算盘子中，PAC 的液泡在超微结构下显示含有细纤维状物质，并且源自内质网的局部扩张。芜菁和山萮菜的 PAC 液泡似乎也是以同样的方式起源的；但是，在超微结构下，它们的内容物是细颗粒状的。此外，芜菁和山萮菜通过光镜和电镜显示，在正常的薄壁细胞中含有扩张的内质网池（DC），这与之前在十字花科的几个物种中的发现是一致的。本文讨论了 PAC 和 DC 与硫葡糖苷和酶芥子酶的关系。
