荇菜腺毛的发育及其分泌过程的超微结构研究3.PDF

植　物　学　报　1996, 38 (6) : 426～ 430 A cta B otan ica S in ica 荇菜腺毛的发育及其分泌过程的超微结构研究 丁小余　施国新　陈维培 (南京师范大学生物系, 南京 210097) 摘要　荇菜( ( . ) . ) 腺毛由具分泌功能的单列圆筒状细胞组成。它们 N ym p hoid es p eltatum Gm el O Kuntz 起源于苗端倒数第二叶原基近轴面, 由原表皮细胞发育而来。处于分泌期的腺毛细胞其胞质浓厚, 液泡 化程度小。细胞内具丰富的线粒体、高尔基体和内质网等细胞器, 还具发达的胞间连丝。粘液物质由高尔 基体分泌小泡、内质网分泌小泡及多膜体共同携带至细胞边缘, 经胞吐和渗透相结合的方式分泌至细胞 外。腺毛细胞侧壁因积有大量分泌物而呈膨胀状态。经检测, 粘液由多糖和蛋白质组成, 对营养芽的生长 发育起保护作用。 关键词　荇菜; 腺毛; 发育; 分泌; 超微结构 STUD IES ON THE D EVELOPM ENT OF GLAND ULAR HA IRS IN N YM PHO ID ES P EL TA TUM AND THE UL TRASTRUCTURE D UR ING THE IR SECRETORY PROCESS D ing X iao yu Sh i Guo x in and Chen W ei pei 210097 D ep artm ent of B iology N anj ing N orm al U niversity N anjing 　 . . Abstract Each glandu lar hair of N ym p hoid es p elta tum Gm el O Kun tz con sisted of on ly one row of cylindar cells w ith secreto ry function. T he hairs o riginated from the p ro toderm cells on the adax ial su rface of the second leaf p rim o rdium from the shoo t apex. Cells of the glandu lar hairs p ro ssessed den se cytop last du ring the secreto ry period . bu t the vacuo les w ere very sm all T here w ere no t on ly abundan t m itochondria Go lgi bodies and endop lasm ic reticu lum in the glandu lar hair cells bu t also m any p lasm odes m ata. T he au tho rsresearch indicated that the m ucilage w as carried to the edge of the cells by the m em b ranou s m u ltilam ellar bodies and the vesicles from bo th Go lgi bodies a