Protein-accumulating cells and dilated cisternae of the endoplasmic reticulum in three glucosinolate-containing genera: Armoracia, Capparis, Drypetes
Protein-accumulating cells and dilated cisternae of the endoplasmic reticulum in three glucosinolate-containing genera: Armoracia, Capparis, Drypetes
复制标题
三个含芥子油苷属的蛋白质积累细胞和内质网扩张池：Armoracia、Capparis、Drypetes
作者：
L. B. Jørgensen;H. Behnke;T. Mabry
Three glucosinolate-containing species,Armoracia rusticanaGaertner, Meyer et Scherbius (Brassicaceae),Capparis cynophallophoraL. (Capparaceae) andDrypetes roxburghii(Wall.) Hurusawa (Euphorbiaceae), are shown by both light and electron microscopy to contain protein-accumulating cells (PAC). The PAC ofArmoraciaandCopparis(former “myrosin cells”) occur as idioblasts. The PAC ofDrypetesare usual members among axial phloem parenchyma cells rather than idioblasts. InDrypetesthe 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 ofArmoraciaandCapparisseem to originate in the same way; but ultrastructurally, their content is finely granular. In addition,ArmoraciaandCapparisare 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.
