Department of Biology, McMaster University, Hamilton, Ontario L8S 4K1 Canada.
Plant Physiol. 1979 May;63(5):847-51. doi: 10.1104/pp.63.5.847.
Energy-dispersive x-ray analysis was used to investigate the location of globoid crystals with relatively high Ca levels within cotyledons of Cucurbita maxima, Cucurbita mixta, and Cucurbita andreana. The small globoid crystals in both upper and lower epidermal cells commonly contained Ca. Ca was present in globoid crystals of all provascular regions with the exception of the very small provascular regions of C. maxima. In C. maxima and C. mixta cotyledons, some cases were observed where Ca was found in the globoid crystals of the first layer of mesophyll cells surrounding the provascular region, but in general Ca was absent from globoid crystals of palisade and spongy mesophyll cells. In C. andreana, globoid crystals of palisade and spongy mesophyll cells commonly contained at least some Ca. Cell position and cell type are factors affecting the Ca content of globoid crystals in protein bodies.
能量色散 X 射线分析用于研究南瓜、南瓜和南瓜安德烈亚内子叶中具有相对高钙水平的球状晶体的位置。在上表皮细胞和下表皮细胞中的小球状晶体通常含有钙。除了南瓜的非常小的维管束区域外，所有维管束区域的球状晶体中都存在钙。在南瓜和南瓜的子叶中，观察到一些情况，即在围绕维管束区域的第一层叶肉细胞的球状晶体中发现了钙，但通常在栅栏和海绵叶肉细胞的球状晶体中没有钙。在南瓜安德烈亚内，栅栏和海绵叶肉细胞的球状晶体通常至少含有一些钙。细胞位置和细胞类型是影响蛋白体中球状晶体钙含量的因素。
