菱的腺毛发育及分泌活动的超微结构研究

菱的腺毛由单列圆筒状细胞组成,具有短暂的分泌功能。它们起源于叶片远轴面、叶柄的表皮细胞以及苗端茎轴、花柄的表皮细胞。处于分泌期的腺毛细胞其胞质浓厚,液泡化程度小,细胞具丰富的线粒体、高尔基体。腺毛丧失了分泌功能后即发育成为表皮毛。粘液物质由高尔基体分泌小泡携带至腺毛细胞侧壁,经胞吐与渗透结合的方式分泌至细胞外,粘液的化学成分主要为多糖。

Studies on the development of glandular hairs in Trapa bispinosa and the ultrastructure during their secretory activity

The glandular hair of Trapa bispinosa Roxb consisted of only one row of cylindrical cells with secretory function. The haris originated from the epidermis cells of the stem axis,the petiole,the floral shoot and abaxial surface of the young leaves. Cells of the glandular hairs possessed dense cytoplast during the secretory period,but the vacuoles were very small. There were abundant mitochondria,Golgi bodies in those glandular hairs. The mucilage was carried to the edge of the cells by the vesicles from the Golgi bodies. The mucilage was secreted extracellularly by either exocytosis and ecrine secretion. The mucilage was tested to be composed of polysaccharides.